JP2005062373A - Lamp cooling system, light source unit, and projector device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a light source unit which is capable of low-noise lamp cooling without blowing hot air out. <P>SOLUTION: A lamp base 13 where a reflector 12 reflecting the light from a lamp bulb 11 as a heat generation source and a lamp bulb 11 are fixed with an adhesive 14 is joined with a heat transport flat plate 15 which forms a plane type heat radiator wherein a zigzag thin pipe containing a refrigerant is incorporated, and the heat transport flat plate 15 is brought into close contact with the internal wall surface of a housing 17 to radiate the heat of the lamp bulb 11 to outside and inside the housing by natural convection through the heat conduction path of the lamp base 13 and heat transport flat plate 15. The lamp base 13 made of ceramic etc., of ≥17W/(mK) in heat conductivity is extended until the lamp base abuts against or is closed to the bulb part of the lamp bulb 11 to efficiently conduct the heat generated by a high-luminance lamp bulb 11 of 150W. Further, a metal material 16, a cushion material 16b, etc., are provided at the arbitrary place of the lamp base 13 and the joined surface of the heat transport flat plate 15. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lamp cooling system, a light source device including the lamp cooling system, and a projector device including the light source device.

  The projector device modulates illumination light emitted from the illumination optical system in accordance with image information (image signal) using an electro-optical device including a light valve (for example, a liquid crystal panel), and the modulated modulated light flux Image display is realized by projecting onto a screen via a projection optical system.

  Usually, the illumination optical system includes a light source device including a lamp bulb, a reflector having a concave surface for reflecting outgoing light emitted from the lamp bulb, and a lamp base for fixing the lamp bulb and the reflector. Yes. Here, as the lamp bulb, a high-pressure mercury lamp, a xenon lamp, a metal halide lamp, or the like is used. Moreover, as a reflector, the thing etc. in which the reflecting film was formed in the concave surface of hard glass are utilized. Regarding the heat generated from the lamp bulb, Japanese Patent Application Laid-Open No. 6-266008 “Cooling device for projector” shown in Patent Document 1 and Japanese Patent Application Laid-Open No. 8-22075 shown in Patent Document 2 “Optical device and cooling method thereof” As described, the air is exhausted from the exhaust port to the outside of the casing mainly by convection heat transfer by a fan.

However, in the conventional projector apparatus cooling system, most of the heat generated from the lamp bulb is exhausted to the outside of the casing by one or two fans. It is likely to be in a high temperature state, and high temperature hot air is exhausted from the exhaust port, which is in a dangerous state that may cause burns to the user. In addition, if the fan voltage is increased to increase the rotation speed of the fan in order to reduce the exhaust port temperature that has become high temperature, there is a problem that noise caused by the fan increases.
In recent years, there has been an increasing demand for higher output lamp lamps and smaller light source devices, and the problems described above tend to become more prominent.

  In order to solve the problems as described above, Japanese Patent Laid-Open No. 2001-125194 “Light source device and projector using the same” disclosed in Japanese Patent Laid-Open No. 2001-125194 has been proposed. In the technique described in Patent Document 3, the reflector is formed by using a ceramic having a thermal conductivity of 0.005 (cal / cm · sec · deg) or more, and the heat from the lamp bulb is effective through the reflector. The hot air is exhausted to the outside of the housing by an exhaust fan provided on the back surface of the reflector. In addition, the technology described in Japanese Patent Laid-Open No. 2-130542 “Image Projection Device” shown in Patent Document 4 is provided outside the housing in order to maintain the temperature inside the housing substantially uniformly below the heat resistance temperature of each component. Outside air is blown by the arranged fan, and the air in the housing is stirred and cooled.

JP-A-6-266008 JP-A-8-22075 JP 2001-125194 A JP-A-2-130542

  However, the technique described in Patent Document 3 does not solve the problem of hot air from the exhaust port because of cooling by an exhaust fan disposed on the back surface of the reflector. Further, in the cooling system proposed in Patent Document 4, in order to maintain the temperature inside the casing below the heat-resistant temperature of each component, the air inside the casing is agitated to absorb heat, and the casing Since it is a cooling system that exhausts heat to the outside, there is a concern about the influence of heat on electronic circuit components, etc., whose temperature specifications are stricter than those around the lamp bulb. In addition, the noise of the fan arranged outside the housing is also a problem.

  The present invention has been made to solve the above-described problems in the prior art, and constructs a heat conduction path with high heat conductivity from the lamp bulb to the housing for the amount of heat generated from the lamp bulb. Accordingly, an object of the present invention is to provide a technique for exhausting heat from the surface of the outer wall of the housing to the outside of the housing without using a cooling fan.

  In order to solve the above-described problems, a lamp cooling system, a light source device, and a projector device according to the present invention include the following technical means.

  The first technical means includes a lamp bulb, a reflector that reflects outgoing light emitted from the lamp bulb, a lamp base that fixes the reflector and the lamp bulb, and a heat transport plate that is joined to the lamp base. The heat generated by the lamp bulb is conducted to the heat transport flat plate, and is naturally transferred from the housing surface to the outside of the housing or into the housing by a radiator provided on the heat transport flat plate. It is characterized by a lamp cooling system that dissipates heat by convection.

  Further, a second technical means is the lamp cooling system according to the first technical means, wherein the heat transport flat plate joined to the lamp base is in close contact with the inner wall surface of the casing, and is thermally applied to the casing. It is characterized by being joined.

  According to a third technical means, in the lamp cooling system according to the first or second technical means, the lamp base is formed using a material having a thermal conductivity of 17 W / (m · K) or more. It is characterized by that.

  According to a fourth technical means, in the lamp cooling system according to the third technical means, the material forming the lamp base is ceramics.

  According to a fifth technical means, in the lamp cooling system according to the fourth technical means, the ceramic is made of any material selected from boron nitride, silicon nitride, aluminum nitride, and alumina. It is characterized by being.

  According to a sixth technical means, in the lamp cooling system according to any one of the first to fifth technical means, the lamp base extends until it comes into contact with or is close to a bulb portion of the lamp bulb. And is thermally joined to the tube portion.

  Further, a seventh technical means is the lamp cooling system according to any one of the first to sixth technical means, in any place of the lamp base and / or the lamp base and the heat transport flat plate. And a metal material of either copper, aluminum, or high thermal conductivity is disposed on each joint surface.

  Further, an eighth technical means is the lamp cooling system according to any one of the first to sixth technical means, in any place of the lamp base and / or the lamp base and the heat transport flat plate. A resin having a high thermal conductivity is disposed on each joint surface.

  According to a ninth technical means, in the lamp cooling system according to any one of the first to sixth technical means, a high heat conductivity is obtained by pressure-bonding the joint surfaces of the lamp base and the heat transport flat plate. And a cushioning material having elasticity is provided on each joint surface of the lamp base and the heat transport flat plate.

  Further, a tenth technical means is a lamp cooling system according to any one of the first to ninth technical means, by a spring which presses each joint surface of the lamp base and the heat transport flat plate to each other. Alternatively, the respective joint surfaces are brought into close contact with each other by screws that are fixed by pressure bonding.

  An eleventh technical means is the lamp cooling system according to any one of the first to tenth technical means, wherein the heat transport flat plate has a plate-shaped heat transport in which a meandering capillary tube in which a refrigerant is enclosed is incorporated. It is characterized by comprising means.

  A twelfth technical means is the lamp cooling system according to any one of the first to eleventh technical means, wherein the lamp bulb, the reflector, the lamp base, and a peripheral portion of the heat transport flat plate are connected to a housing. A heat insulating layer that shields other parts in the body is provided in the housing.

  Further, a thirteenth technical means is the lamp cooling system according to the twelfth technical means, wherein an opening for ventilating the air in the housing in which the other parts shielded by the heat insulating layer exist by natural convection is provided. It is characterized by being drilled in the wall surface of the housing.

  A fourteenth technical means is the lamp cooling system according to any one of the first to thirteenth technical means, wherein a portion of the outer wall surface of the housing that can be touched by a user has a low thermal conductivity resin or a low heat. It is characterized by being covered with a coating material made of any member of conductivity.

  According to a fifteenth technical means, in the lamp cooling system according to the fourteenth technical means, the cover made of the coating material is formed in any of a lattice shape, a slit shape, or a dot shape. It is characterized by that.

  According to a sixteenth technical means, in the lamp cooling system according to any one of the first to fifteenth technical means, a detachable lamp case that houses the lamp bulb, the reflector, and the lamp base is provided. It is characterized by being.

  According to a seventeenth technical means, in the lamp cooling system according to the sixteenth technical means, the lamp case is interposed between the joint surfaces of the lamp base and the heat transport flat plate, When the base is fixed to the inner wall surface of the lamp case, the lamp base is bonded to the heat transport flat plate via a bonding surface formed on the outer wall surface of the lamp case. The joint surface is formed from any member of copper, aluminum, or any metal material having high thermal conductivity, a resin having high thermal conductivity, or a cushioning material having high thermal conductivity and elasticity. It is characterized by being.

  The eighteenth technical means is the lamp cooling system according to the seventeenth technical means, by a spring that presses the joint surface of the lamp case and the joint surface of the heat transport flat plate against each other, or The joining portion of the lamp case and the joining surface of the heat transport flat plate are brought into close contact with each other by screws that are fixed by crimping.

  The nineteenth technical means is the lamp cooling system according to any one of the first to eighteenth technical means, further comprising a translucent front plate on the opening surface of the reflector. It is said.

  According to a twentieth technical means, in the lamp cooling system according to any one of the first to nineteenth technical means, a fan for forcibly cooling the inside of the reflector is provided.

  The twenty-first technical means is a light source device that emits outgoing light in the same direction, and includes the lamp cooling system according to any one of the first to twentieth technical means. .

  The twenty-second technical means includes an illumination optical system that emits illumination light by integrating the emitted light emitted from the light source device according to the twenty-first technical means, and illumination light emitted from the illumination optical system. The projector is provided with an electro-optical device that modulates the light in accordance with image information and a projection optical system that projects a modulated light flux obtained by the electro-optical device.

  A twenty-third technical means is characterized in that, in the projector device described in the twenty-second technical means, driving means for supplying the image information to the electro-optical device for driving is provided. .

Since the lamp cooling system, the light source device and the projector device according to the present invention are constituted by the technical means as described above, the following effects can be obtained.
First, a lamp bulb that is a heat source, a reflector that reflects outgoing light emitted from the lamp bulb, a lamp base that fixes the reflector and the lamp bulb, and a heat transport flat plate that is joined to the lamp base Without using a cooling fan, the heat of the lamp bulb is transferred to the surface of the housing through a heat radiator provided on the heat transport flat plate closely attached to the inner wall surface of the housing. It is possible to provide a lamp cooling system that can effectively dissipate heat by natural convection from the inside to the outside of the housing or into the housing, eliminating the need for a forced air cooling fan to cool the lamp bulb. It is.

  Further, by using a material having a high thermal conductivity of 17 W / (m · K) or more as the lamp base, for example, a ceramic material, the amount of heat passing through the heat conduction path from the lamp bulb to the heat transport plate through the lamp base is increased. Even when a high-intensity lamp bulb with power consumption of about 150 W is used, most of the heat generated from the lamp bulb can be efficiently guided to the heat transport plate.

  In addition, although the lamp bulb itself has a low thermal conductivity, a lamp base with a high thermal conductivity is extended until it comes into contact with or close to the bulb portion of the lamp bulb, so that the amount of heat generated from the lamp bulb is more positive. Therefore, it is possible to take in the lamp base, so that a further effect can be obtained in the movement of the heat amount to the lamp base.

  In addition, a metal such as copper or aluminum having a higher thermal conductivity than that of the ceramic material at an arbitrary position of the lamp base forming the heat conduction path and / or on each joint surface of the lamp base and the heat transport flat plate. It is also possible to realize more effective heat conduction by arranging a material or a resin having high thermal conductivity to assist the heat conduction of the lamp base. Alternatively, by providing a cushioning material having high thermal conductivity and elasticity on each joint surface of the lamp base and the heat transport flat plate, the respective joint surfaces of the lamp base and the heat transport flat plate are crimped together, It is also possible to increase the adhesion and make the heat conduction more effective. Further, the heat conduction is made more effective by bringing the joint surfaces of the lamp base and the heat transport flat plate into close contact with each other by a spring that presses the joint surfaces to each other or by screws that fasten the joint surfaces by crimping. It is also possible to do this.

  Further, in order to ensure heat transfer from the heat transport flat plate to the housing, the heat transport flat plate arranged in close contact with the inner wall surface of the housing is a flat plate-shaped meandering tubule in which a refrigerant such as butane or water is sealed. Built-in and using heat lanes etc. in which heat is transferred by the latent heat of the refrigerant, sensible heat, self-excited vibration of the liquid phase, movement of the gas phase and liquid phase, etc. It is difficult to generate heat, and it is possible to effectively exhaust heat as a radiator with a flat surface regarded as a heat sink.

  In addition, the reflector, lamp base, and heat transport flat plate that form a heat conduction path for transporting heat from the lamp bulb to the outside of the housing have risen to high temperatures. Since there are many components with low heat-resistant temperature (for example, electronic circuit components) inside the housing as in the case of the case, the lamp cooling system according to the present invention for constructing the exhaust heat system using heat conduction is suitable. In this case, by providing a heat insulating layer that shields between the members that form the heat conduction path and the parts that have a low heat-resistant temperature in the housing, each component that maintains the normal operation of the parts that have a low heat-resistant temperature is maintained. It is possible to ensure the lifetime.

  Furthermore, even a component with a low heat-resistant temperature is overwhelmingly lower than the calorific value of the lamp bulb, but it is accompanied by a certain amount of heat generation, and there is a component with a low heat-resistant temperature shielded by the heat insulating layer. The air in the space inside the housing is ventilated with the outside of the housing by natural convection through an opening formed in the wall of the housing. It is also possible to dissipate heat by natural convection.

  In addition, for the part of the outer wall surface of the housing that can be directly touched by a user who handles a light source device or a projector device equipped with a lamp bulb that is a high-temperature heat source, a coating material made of low thermal conductivity resin or the like Since the cover is provided by the lamp cooling system according to the present invention, the user does not directly touch the metal ground on the outer wall surface of the casing that is thermally conducted from the lamp bulb and becomes hot, and damage such as burns Can be prevented. In addition, since the coating material made of low thermal conductivity resin or the like is formed on the outer wall surface of the housing in a grid shape, slit shape, or dot shape, the effect of reducing the contact area that touches the user's skin It is possible to reduce the sensible temperature, and to radiate heat directly from the outer wall surface of the housing that is exposed to the outside air, thereby ensuring a heat radiation effect.

  Also, when replacing a lamp bulb that has a life expectancy, replace the lamp bulb, reflector, lamp base, etc. with a low thermal conductivity so that the user does not touch the hot lamp bubble, reflector, or lamp base directly. The lamp case is structured to be detachable as an independent replacement unit when housed in the case, thereby improving the operability of lamp bulb replacement and fixing the lamp base to the joint surface with the heat transport flat plate. Even in the case where the lamp case itself is formed, the thickness of the lamp case is appropriately reduced with respect to the joint area of the joint surface, and the joint surface of the lamp case has a high thermal conductivity. By using a resin material, it is possible to reduce an increase in thermal resistance and efficiently conduct heat.

  Furthermore, the joint surface of the lamp case is any of copper, aluminum, a metal material having high thermal conductivity, a resin having high thermal conductivity, or a cushioning material having high thermal conductivity and elasticity. By providing such a member, or by bringing the respective joint surfaces of the lamp case and the heat transport flat plate into contact with each other by a spring, or by bringing the joint surfaces into contact with each other by means of pressure-fixing. It is also possible to conduct heat conduction more effectively.

  If the lamp cooling system as described above is used, the amount of heat generated from the lamp bulb is transported to the housing via the heat transport plate, so that the heat of the lamp bulb can be reduced to the forced air cooling fan. Without using it, it is possible to discharge from the outer wall surface of the housing to the outside of the housing, and it is possible to construct a lamp cooling system that can reduce noise and does not blow hot air from the exhaust port.

  Further, by providing, for example, a front glass as a front plate having high translucency on the opening surface of the reflector corresponding to the front of the optical axis of the lamp bulb, it is possible to take an explosion-proof measure for the lamp bulb. Furthermore, it can be used for cooling a light source with higher brightness by using both heat dissipation means that exhausts heat through a heat conduction path consisting of a reflector, lamp base, and heat transport flat plate, and forced air cooling means using an exhaust fan. Compared to conventional lamp cooling systems that use only an exhaust fan, it is possible to reduce the noise while maintaining the cooling effect, and it is closed by a heat insulating layer or windshield. Thus, it is possible to further cool the inside of the reflector in a high temperature state, particularly the seal portion on the front side of the lamp bulb.

  Furthermore, by using a light source device equipped with a lamp cooling system as described above as a light source device that emits emitted light for irradiating in the same direction, it is not necessary to provide a fan for forced air cooling, and noise reduction is achieved. It is possible to realize a light source device that is possible, does not blow hot air from the exhaust port, is easy to handle, and is user-friendly.

  Furthermore, by applying the light source device equipped with the lamp cooling system as described above to the light source of the illumination optical system of the projector device, there is less noise, no hot air is blown from the exhaust port, and handling is easy and user friendly. A projector device can be realized.

  A lamp cooling system according to the present invention includes a lamp bulb, a reflector that reflects outgoing light emitted from the lamp bulb, a lamp base that joins the reflector and the lamp bulb, and heat that is joined to the lamp base. The heat generated by the lamp bulb is conducted to the heat transport flat plate, and from the surface of the case to the outside of the case or through the radiator provided on the heat transport flat plate. It is dissipated by natural convection into the body. Here, the heat transport flat plate is disposed so as to be in close contact with the inner wall surface of the casing and thermally bonded, and for example, a ceramic material having a thermal conductivity of 17 W / (m · K) or more is used as the lamp base. As the heat transport flat plate, a plate-shaped heat transport means (heat radiator) incorporating a meandering capillary tube in which a refrigerant such as butane or water is enclosed is used. It is configured to conduct heat effectively, and heat is radiated to the outside of the housing or into the housing by natural convection by the heat transport flat plate radiator.

  That is, in the lamp cooling system according to the present invention, the heat conduction path is configured by the lamp bulb, the reflector, the lamp base, and the heat transport plate, and is thermally and closely joined from the lamp bulb to the housing. Without using a fan for forced air cooling, heat is effectively radiated by natural convection from the surface of the outer wall of the housing, which is in close contact with the heat transport flat plate equipped with a flat plate-shaped radiator, to the outside of the housing or into the housing. Therefore, a lamp cooling system is constructed in which hot air is not blown out from the exhaust port of the housing while reducing noise and maintaining quietness.

  Further, the light source device according to the present invention is configured to include the lamp cooling system as described above, and the projector device according to the present invention further includes the light source device including the lamp cooling system as an illumination optical system. As described above, a light source device and a projector device that do not require a forced air cooling fan and that are easy to handle without hot air blowing out are realized.

  Embodiments of a lamp cooling system, a light source device, and a projector device according to the present invention will be described below with reference to the drawings. First, an embodiment of the configuration of the lamp cooling system according to the present invention will be described with reference to FIGS. FIG. 1 is a conceptual diagram of a light source device for explaining an example of a configuration of a lamp cooling system according to the present invention. That is, the conceptual diagram shown in FIG. 1 shows a cross-sectional view of the light source device 50 provided with the lamp cooling system, cut at the position of the optical axis of the light emitted from the lamp bulb 11. FIG. 2 is a conceptual diagram for explaining an example of the configuration of the projector device to which the light source device 50 shown in FIG. 1 is applied, and is cut at the position of the optical axis of the light emitted from the lamp bulb 11 as in FIG. FIG.

  Here, the present lamp cooling system includes a lamp bulb 11, a reflector 12 that reflects the emitted light emitted from the lamp bulb 11 in the same direction, and the lamp bulb 11 and the reflector 12 with an adhesive 14 made of cement or the like. The lamp base 13 is fixed to each other, and the heat transport flat plate 15 joined to the lamp base 13. The heat transport flat plate 15 is in close contact with the inner wall surface of the housing 17 of the light source device 50. And are thermally bonded.

  Further, the lamp base 13 having a high thermal conductivity and a thin thickness is made to extend in a cylindrical shape up to the bulb portion of the lamp bulb 11 within a range not losing the amount of light emitted from the lamp bulb 11. Thus, the heat generated from the lamp bulb 11 that is disposed in contact with or close to the bulb portion is moved more effectively to the lamp base 13 directly or by heat radiation from the bulb portion of the lamp bulb 11. The projection 13a is provided with a projection 13a, which is in thermal contact with the lamp bulb 11 and abuts on the reflector 12 in a high temperature state, so that the heat from the reflector 12 is transferred to the lamp base 13 It is formed so as to be conducted positively to the main body, and a higher heat dissipation effect can be obtained.

  Thus, most of the heat generated by the lamp bulb 11 is in close contact with the heat transport flat plate 15 forming the heat pipe through the heat conduction path of the reflector 12, the lamp base 13, and the heat transport flat plate 15. It is guided to the body 17 and is radiated by natural convection to the outside of the housing 17 of the light source device 50 or into the housing 17. Note that a portion of the outer wall surface of the housing 17 that may be touched by the user is provided with a coating material 21 made of a heat insulating resin having a low thermal conductivity in a lattice shape, a slit shape, or a dot shape. It covers so that it may not contact the outer wall surface of the housing | casing 17 which becomes high temperature directly.

  Although not shown in the light source device 50 of FIG. 1 or the projector device 100 of FIG. 2, a metal material of any one of copper, aluminum, or high thermal conductivity, or a high thermal conductivity is provided at an arbitrary portion of the lamp base 13. As shown in the light source device 50 of FIG. 1 and the projector device 100 of FIG. 2, a metal material having a high thermal conductivity is disposed on each joint surface of the lamp base 13 and the heat transport flat plate 15. 16, 16A and resins 16a and 16Aa having high thermal conductivity can be arranged.

  Here, the metal material or the resin disposed at an arbitrary position of the lamp base 13 has a higher thermal conductivity than the ceramic material or the like that forms the lamp base 13. The heat conduction of the lamp base 13 can be assisted by disposing the lamp base 13 to further reduce the thermal resistance in the lamp base 13, so that the heat conduction can be made highly efficient and the cost can be reduced. it can. Further, by disposing the metal materials 16 and 16A and the resins 16a and 16Aa having higher thermal conductivity than the lamp base 13 on the respective joint surfaces of the lamp base 13 and the heat transport flat plate 15, the thermal resistance of the joint surface is obtained. It is also possible to achieve further reduction, and more effective heat conduction can be realized.

  Further, by arranging cushion materials 16b and 16Ab having high thermal conductivity and elasticity as heat conductive sheets on the respective joint surfaces of the lamp base 13 and the heat transport flat plate 15, the lamp base 13 and the heat transport plate 15 are heated. It is also possible to bond the respective bonding surfaces with the transport flat plate 15 so as to be pressure-bonded to each other, further increase the adhesion, further expand the bonding area of both, and further reduce the thermal resistance between the bonding surfaces. It is.

  Further, although not shown in the light source device 50 of FIG. 1 or the projector device 100 of FIG. 2, a spring that presses the joint surfaces of the lamp base 13 and the heat transport flat plate 15 to each other is provided, It is also possible to reduce the thermal resistance by providing a screw for tightening the joint surface so that the joint surface is fixed by pressure.

  In addition, the light source device 50 is provided with a detachable lamp case 19 in order to improve the exchangeability of the lamp bulb 11, and houses the lamp bulb 11, the reflector 12, the lamp base 13, and the like. When replacing the lamp case, the lamp case 19 is replaced as an independent replacement unit together with the reflector 12, the lamp base 13, and the like.

  Here, when the lamp base 13 is also integrated as the lamp case 19 so that it can be easily replaced, the lamp base 13 must be in a form that can be detached from the heat transport flat plate 15, so that the lamp base 13 is thermally tightly bonded to each other. In order to prevent a decrease in the thermal conductivity between the heat transport flat plate 15 and the lamp base 13 that is necessary, a high heat conductivity is provided on each joint surface of the lamp base 13 and the heat transport flat plate 15 as described above. When the lamp case 19 is mounted so as to be provided with a material having a higher thermal conductivity than the lamp base 13 such as the metal materials 16 and 16A having a high rate and the resins 16a and 16Aa, the heat transport with the lamp base 13 is achieved. The joint surface with the flat plate 15 is configured to be thermally joined to each other with high efficiency.

  Alternatively, in order to prevent a decrease in the thermal conductivity between the heat transport flat plate 15 and the lamp base 13, in order to further improve the adhesion between the lamp base 13 and the heat transport flat plate 15, as described above, The joint surface may be provided with cushioning materials 16b and 16Ab such as a heat conductive sheet and a graphite sheet having high thermal conductivity and elasticity. Further, the lamp base 13 and the heat transport flat plate 15 It is also possible to further improve the adhesion between the two by providing a spring that presses each joint surface against each other, or by providing a screw that crimps and fixes the joint surface.

  Further, a front glass 20 as a front plate having a high light transmittance is provided on the opening surface of the reflector 12 from which the light emitted from the lamp bubble 11 is emitted as an explosion-proof measure against the burst of the lamp bulb 11. That is, even if the lamp bulb 11 is ruptured, the fragments of the lamp bulb 11 and the fragments of the reflector 12 that may be destroyed by the collision of the fragments of the lamp bulb 11 are scattered and expanded inside the housing 17. In order to prevent this, the front glass 20 is inserted into the opening surface of the reflector 12 as a front plate having high translucency, and the front glass 20 is visible as emitted light from the lamp bulb 11. A hard glass with high transmissivity that can transmit most of the light is used.

  Next, the optical operation of the light source device 50 will be described. The outgoing light emitted from the lamp bulb 11 is reflected in the same direction by a reflecting mirror formed in a concave shape on the inner surface of the reflector 12. The outgoing light reflected by the reflector 11 is emitted in the same direction, passes through the front glass 20 having a high translucency, and irradiates the subject in the forward direction. For example, when used as a light source of the projector device 100 shown in FIG. 2, the emitted light transmitted through the front glass 20 is transmitted to the electro-optical device 80 in the illumination optical system 70 (excluding the light source device 50) in the forward direction. In order to obtain illumination light suitable for irradiating the light valve, the light emitted from the light source device 50 is incident on an integrator lens system that integrates the emitted light.

  In other words, in the projector device 100 shown in FIG. 2, the emitted light emitted from the light source device 50 enters an integrator lens system including a condenser lens, a lens array, and the like that constitute the illumination optical system 70 (other than the light source device 50). The incident illumination light is integrated and emitted to the electro-optical device 80. The illumination light incident on the electro-optical device 80 is modulated by image information by irradiating a light valve such as a liquid crystal panel via a dichroic mirror, and the modulated color lights are synthesized by a dichroic prosm etc. Then, it enters the projection optical system 90 as a modulated light beam. A projection optical system 90 including a projection lens projects the projected modulated light bundle on the screen or the like as an enlarged projection light beam. Here, the electro-optical device 80 includes a driving unit 80a for supplying the image information to the light valve and driving the light valve.

  Further, in the case of the projector device 100, the housing of the projector device 100 is integrated with the housing 17 on which the light source device 50 is mounted, and the light source device 50 that has a high temperature and a component that has a low heat resistance temperature (particularly, The heat insulation layer 18 is interposed between the electro-optical device 80 and the illumination optical system 70 (excluding the light source device) including components including an electronic circuit component and an electronic circuit board. Configured to do.

  That is, the amount of heat transported by heat conduction through each heat transport member that forms a heat conduction path from the lamp bulb 11 to the inner wall surface of the housing 17 via the reflector 12, the lamp base 13, and the heat transport plate 15 is as follows. In order to bring the temperature of each heat transport member interposed in the heat conduction path to a very high temperature state, there are components having a low heat resistance temperature such as an electronic circuit component and an electronic circuit board existing inside the housing 17. The heat insulation layer 18 is provided between the space different from the heat transport member in the housing 17 and the space in the housing 17 where the heat transport member exists to shield the heat, and the heat resistant temperature is low. The normal operation of the parts is ensured and the life of the parts is not shortened.

  Further, even a component having a low heat-resistant temperature that is shielded by the heat insulating layer 18 is overwhelmingly less than the amount of heat generated by the lamp bulb 11, but has a certain amount of heat (for example, an electronic circuit component). ), And the temperature of the space in the housing 17 where the heat-resistant layer 18 that has a low heat-resistant temperature is present also increases. Therefore, the air in the space in the housing 17 where there is a part having a low heat-resistant temperature is ventilated between the outside of the housing 17 by natural convection through the opening 17a formed in the wall surface of the housing 17. Therefore, it is possible to dissipate the heat generated by the component having a low heat-resistant temperature by natural convection.

  Further, in the case of the projector device 100, the heat transport flat plate 15 constituting the heat conduction path of the light source device 50 increases the contact area with the inner wall surface of the housing 17 and smoothly moves the heat to the housing 17. In order to achieve this, the illumination optical system 70 and the electro-optical device (excluding the light source device) are integrated with the heat transport flat plate 15 on the light source device 50 side as in the heat transport flat plate extending portion 15a shown in FIG. 80 and the projection optical system 90 are arranged so as to extend from the light source device 50 side so as to be in close contact with the inner wall surface of the housing 17 at the storage position.

  Thus, the high temperature heat (excluding the light source device) of the heat transport plate extending portion 15a disposed extending from the light source device 50 side is removed from the illumination optical system 70, the electro optical device 80, and the projection optical system 90. In order to shield the heat, a heat insulating layer extending portion 18a in which the heat insulating layer 18 is extended to the housing position of the illumination optical system 70, the electro optical device 80, and the projection optical system 90 (excluding the light source device) is provided. At the same time, in order to prevent the user from directly touching the outer wall surface of the casing 17 that becomes high temperature, the outside of the casing 17 in the storage position of the illumination optical system 70, the electro-optical device 80, and the projection optical system 90 (excluding the light source device) Also on the wall surface, a coating material extending portion 21a, in which the coating material 21 is extended, is closely attached using any one of a lattice shape, a slit shape, or a dot shape.

  The lamp bulb 11 is provided with an arc tube, and a pair of electrodes are disposed inside the arc tube. The pair of electrodes are arranged so as to face each other in a state where they are separated from each other by a predetermined distance at a substantially central position of a tube portion where the arc tube has a substantially spherical shape. Here, the center position of the bulb portion of the arc tube is disposed at a substantially focal position of the reflector 12. In this embodiment, a high-pressure mercury light source lamp with a power consumption of about 150 W is used as the lamp bulb 11 serving as a high-intensity light source. However, the lamp bulb 11 can be a metal halide lamp or xenon lamp. Etc. may be used.

  Further, the front glass 20 provided on the opening surface of the reflector 12 is a glass plate material having high translucency. In this embodiment, the front glass 12 is emitted from the lamp bulb 11 as described above as a material of the front glass 12. Hard glass that can transmit almost all visible light is used.

  Here, as described above, the lamp bulb 11 and the reflector 12 are fixed to each other with the lamp base 13 using an adhesive 14 such as cement. Furthermore, the lamp base 13 and the heat transport flat plate 15 are in close contact with heat conductive sheets having high thermal conductivity such as metal materials 16 and 16A or resins 16a and 16Aa or cushion materials 16b and 16Ab formed on the respective joint surfaces. And are thermally bonded. The heat transport flat plate 15 is in close contact with the inner wall surface of the housing 17. Thus, the heat generated from the lamp bulb 11 is efficiently radiated from the housing 17 to the outside through the heat conduction paths of the reflector 12, the lamp base 13, and the heat transport plate 15.

  Here, the series of heat transport members of the reflector 12, the lamp base 13, the heat transport flat plate 15, and the housing 17 are in a high temperature state because the amount of heat transported from the lamp bulb 11 is large. However, since there are many parts that dislike high temperatures in the housing 17 such as the electro-optical device 80 of the projector device 100 shown in FIG. 2 to which the light source device 50 shown in FIG. 1 is applied, as described above. The heat insulating layer 18 and the heat insulating layer extending portion 18a are formed so as to surround the heat transport member that becomes hot. Further, since the surface temperature of the outer wall surface of the housing 17 becomes high, a cover made of a coating material 21 made of a low thermal conductivity resin or the like and a coating material extending portion 21a is attached to the outer wall portion of the housing 17 that becomes high temperature. Thus, the user's skin cannot be directly touched to the metal part on the outer wall surface of the high-temperature casing 17.

  Further, in the present embodiment shown in FIG. 1, notches are provided in part of the heat insulating layer 18 and the front glass 20 to form an intake port 20a and an exhaust port 20b, and for forced air cooling inside the reflector 12 that becomes high temperature. The fan 60 may be used to blow air to forcibly cool the inside of the reflector 12, particularly the seal portion on the front side of the lamp bulb 11.

  Note that, as described above, the power consumption of the lamp bulb 11 that is assumed to be cooled by the lamp cooling system according to the present invention is assumed to be approximately 150 W as a light source for high brightness. In addition, since the amount of heat generated by the lamp bulb 11 is generally about 70% of the power consumption, the amount of heat to be processed in this lamp cooling system is 105 W.

  Here, the material of the lamp base 13 used for fixing the lamp bulb 11 to the reflector 12 is usually steatite having a thermal conductivity of about 1 W / (m · K). However, in the case of the present invention aiming at transporting about 105 W of heat generated by the lamp bulb 11 to the surface of the housing 17 by heat conduction, a reduction in the thermal resistance of the lamp bulb 11 is an essential condition. As the material of the base 13, a ceramic material which is one of members having a high thermal conductivity of 17 W / (m · K) or more is used.

  Further, as the ceramic material forming the lamp base 13, any material having high thermal conductivity and electrical insulation, such as boron nitride, silicon nitride, aluminum nitride, alumina, or the like is used. It is more desirable. By using a ceramic material having a high thermal conductivity such as this to constitute the heat conduction path, it is possible to efficiently conduct the heat while ensuring electrical insulation.

  However, when using a lamp lamp with higher brightness with power consumption of 150 W or more, it does not mean that no effect is obtained even if the lamp cooling system according to the present invention is adopted. A hybrid type lamp cooling system is used in which the heat conduction means for radiating the heat generated by the lamp bulb 11 from the lamp base 13 through the heat transport flat plate 15 is used together with the forced air cooling means by the exhaust fan 60 described above. As a result, it is possible to obtain a light source device capable of setting the rotation speed of the fan 60 slower than in the prior art and reducing the exhaust temperature while reducing noise.

  Here, as described above, an arbitrary part of the lamp base 13 is made of copper, aluminum, a metal material having a high thermal conductivity, or a resin having a high thermal conductivity, which has a higher thermal conductivity than the ceramic material. It is good also as arranging. Arranging a metal material having a higher thermal conductivity than the thermal conductivity of the lamp base 13 or a resin having a higher thermal conductivity at an arbitrary position of the lamp base 13 helps to increase the efficiency of thermal conduction in the lamp base 13. In addition, the cost can be reduced.

  However, considering that the lamp bulb 11 has a life and is a replacement part that is premised on replacement as described above, the lamp base 13 to which the lamp bulb 11 is fixed by the adhesive 14 is connected to the heat transport flat plate 15. The joining surfaces to be joined must have a structure that can be detached from the heat transport flat plate 15. Therefore, in order to reduce the thermal resistance between the joint surfaces of the lamp base 13 and the heat transport flat plate 15 as much as possible, the joint surfaces between the lamp base 13 and the heat transport flat plate 15 are as follows. The material having high thermal conductivity such as the metal material 16, 16A or the resin 16a, 16Aa is used to improve the thermal conductivity between the joint surfaces, or the cushioning material 16b has high thermal conductivity and elasticity. , 16Ab, etc., such as a heat conductive sheet, a graphite sheet, or a pressing material using a spring or a screw, etc., to promote the adhesion between solids, and the bonding area between the lamp base 13 and the heat transport flat plate 15 The member which enlarges is needed.

  In addition, since the lamp bulb 11 is a replacement part, when removing the lamp bulb 11, the user's skin should not directly touch the reflector 12 or the lamp base 13 that may be hot. It is desirable that the lamp bulb 11, the reflector 12, the lamp base 13, and the like are completely covered with a lamp case 19 made of, for example, resin having a low thermal conductivity, and the lamp case 19 is configured as an independent replacement unit. As described above, if the lamp case 19 in which the lamp bulb 11, the reflector 12, and the lamp base 13 are housed is replaced as a replacement unit, the lamp bulb 11, the reflector 12, and the lamp base 13 that are in a high temperature state are touched. The lamp bulb 11 can be exchanged easily.

  Here, in the case where the exchangeability of the lamp bulb 11 is improved by using the detachable lamp case 19 in which the lamp bulb 11, the reflector 12 and the lamp base 13 are completely accommodated, the space between the lamp base 13 and the heat transport flat plate 15 is improved. Are indirectly joined via the lamp case 19, which becomes a factor of deteriorating the thermal resistance between the lamp base 13 and the heat transport flat plate 15 forming the heat conduction path. In order to solve such a problem, although not shown in FIGS. 1 and 2, the lamp base 13 is fixed to the inner wall surface of the lamp case 19, and the joint surface with the heat transport flat plate 15 is used as the lamp case 19 itself. In addition, the joint surface between the lamp case 19 and the heat transport flat plate 15 is made of a resin material having high thermal conductivity, and the thickness of the joint surface of the lamp case 19 is made as much as possible. It is important to suppress the increase in thermal resistance by setting the heat transport distance appropriately with respect to the heat transfer area of the joint surface while keeping it thin. For example, a material having high thermal conductivity can be obtained by using a thermosetting resin containing carbon or ceramic, such as Cool Summit polymer, as the joining surface of the lamp case 19.

  Further, in order to cover the deterioration of the thermal resistance, it is also important to improve the thermal conductivity of each joint surface between the lamp case 19 to which the lamp base 13 is fixed and the heat transport flat plate 15. In other words, the above-described measures for reducing the thermal resistance at the joint surface of the lamp base 13 should be applied to the joint surface of the lamp case 19. That is, for example, the lamp case 19 to which the lamp base 13 is fixed and the heat transport flat plate 15 are connected to a metal material, a resin material, or a cushion material (metal materials 16, 16A and resins 16a, 16Aa shown in FIG. Or the cushion base material 16b, 16Ab) or the like, and the lamp base 13 can be separated from the lamp base 13 by the lamp case 19 by bonding them together. Therefore, the heat from the lamp bulb 11 can be smoothly guided to the heat transport flat plate 15 through the joint surface of the lamp case 19 having a high thermal conductivity, and the heat radiation effect for the heat generated by the lamp bulb 11 can be obtained.

  Further, by using cushion materials (cushion materials 16b and 16Ab shown in FIG. 1) having high thermal conductivity and high elasticity, the joint surfaces of the lamp case 19 and the heat transport flat plate 15 are further adhered to each other. , By crimping each other, expanding the joint area of each other, or by pressing the joint surfaces against each other with a spring, or by attaching them closely, or by tightening with screws, although the detachability of the lamp case 19 is slightly reduced By closely contacting, the thermal resistance at the joint surface between the lamp case 19 and the heat transport flat plate 15 is reduced, and the heat from the lamp base 13 can be smoothly guided to the heat transport flat plate 15 via the lamp case 19. In addition, a heat dissipation effect for the heat generated by the lamp bulb 11 can be obtained.

  The heat of the lamp bulb 11 passes through the lamp base 13 via the adhesive 14 such as cement for fixing and is conducted to the heat transport flat plate 15. In general, the heat conduction of the lamp bulb 11 itself is performed. Since the rate is very low, heat from the lamp bulb 11 is not easily conducted to the lamp base 13. Therefore, in the lamp cooling system according to the present invention, the projection base 13a that abuts the lamp base 13 against the reflector 12 and the efficiency of the reflected light from the lamp bulb 11 via the reflector 12 can be maintained. The lamp base 13 is extended until it comes into contact with or close to the bulb portion of the lamp bulb 11, or the fixing position of the lamp bulb 11 and the lamp base 13 is set at the bulb portion of the lamp bulb 11, or It is desirable to take measures such as starting fixation from points as close as possible.

  Further, in the present lamp cooling system in which the heat of the lamp bulb 11 is radiated from the outer wall surface of the housing 17 through the heat conduction path, the surface of the housing 17 is regarded as a heat sink. Fin efficiency becomes an important factor. In the present embodiment, as one of the methods using the latent heat and sensible heat of the heat pipe, the heat transport flat plate 15 disposed in close contact with the inner wall surface of the housing 17 is used as described above. That is, in other words, the heat transport flat plate 15 is a plate (flat plate) type heat pipe using latent heat and sensible heat, and a plate-shaped meandering tubule having a closed path is built therein. A refrigerant such as butane or water is sealed in the meandering tubule, and a gas phase and a liquid phase are mixed.

  Thus, there is formed a heat lane in which heat is transferred using the movement of the refrigerant in the meandering capillary between the gas phase and the liquid phase and the self-excited vibration of the liquid phase. The heat transport flat plate 15 composed of heat transport means such as this is unlikely to generate a temperature distribution due to its characteristics, and the flat surface is in close contact with the inner wall surface of the housing 17 as in the lamp cooling system according to the present invention. Effective heat exhaustion can be performed as a heat sink that looks like a heat sink. That is, since the heat transport flat plate 15 has a flat outer appearance, the fin efficiency of a flat flat portion such as the inner wall surface of the housing 17 is improved as applied to the lamp cooling system according to the present invention. When using as a heat radiator which raises a heat dissipation effect, it can apply suitably.

  As described above, the amount of heat conducted to the heat transport flat plate 15 is efficiently transmitted by heat conduction to the housing 17 in surface contact with the heat transport flat plate 15, and is naturally convected from the outer wall surface of the housing 17 to the atmosphere. Heat is dissipated. Here, the casing 17 is made of metal in order to reduce thermal resistance.

  On the other hand, from the viewpoint of usability of the light source device 50 or the projector device 100 to which the light source device 50 is applied, the metal casing 17 is the same as compared to a resin casing having a low thermal conductivity. Even if it is temperature, there is a large gap in the temperature sensed by the skin of the user who touches it. A large gap in the perceived temperature is due solely to the difference in thermal conductivity. Therefore, even if the metal casing 17 is used, in consideration of the safety of the user, if the outer wall surface of the casing 17 is covered with a low thermal conductivity member, the user can Even when touching 17, the touch is made through the cover of the low thermal conductivity material, so that the temperature of perception can be kept low.

  Therefore, in this embodiment, as shown in FIG. 1 and FIG. 2, the portion of the outer wall surface of the metal casing 17 that can be touched by the user is coated with a coating material 21 using a resin with low thermal conductivity. By covering the temperature, the temperature experienced when the user touches is kept low. That is, the thermal conductivity is kept so that the user's skin does not directly touch the metal ground on the outer wall surface of the casing 17 that is in close contact with and thermally bonded to the heat transport flat plate 15 in a high temperature state. By coating with a coating material 21 such as a low-resin resin, the outer wall surface of the housing 17 that the user may touch is covered, and the temperature experienced when the user touches the outer wall surface of the housing 17 is kept low. Can do.

  Further, the coating material 21 such as a resin covering the outer wall surface of the housing 17 is formed in a grid shape, slit shape, or dot shape, and the arrangement pitch of the coating material 21 is set at an appropriate interval. By doing so, the entire outer wall surface that can be touched by the user of the housing 17 is not covered, and the deterioration of the heat radiation performance associated with covering the outer wall surface of the housing 17 with the coating material 21 is minimized. At the same time, the temperature of the user's sensation when the user touches the housing 17 can be kept low.

  Here, when the coating material 21 is formed in any one of a lattice shape, a slit shape, or a dot shape, it is natural that the user touches the housing 17 of the light source device 50 or the projector device 100. In addition, the pitch and height are set so that the user's skin does not reach the outer wall surface of the metal casing 17, and the coating material 21 such as a resin having a low thermal conductivity is kept low while the user's perceived temperature is kept low. It is important that the metal ground of the casing 17 not covered with is directly exposed to the atmosphere. By adopting such a structure, heat radiation by natural convection is performed directly from a point on the surface of the metal casing 17 where there is no temperature drop due to the passage of the coating material 21 having a low thermal conductivity, so that the light source device 50 and the projector device 100 are handled. The cooling performance by direct heat radiation from the outer wall surface of the housing 17 can be ensured while satisfying the user convenience. Furthermore, since the coating material 21 has a grid shape, slit shape, or dot shape, the contact area of the coating material 21 itself with which the skin of the user's finger or the like comes into contact can be greatly reduced. There is also an advantage that the amount of heat transferred to can be further reduced.

  As described above, the lamp cooling system according to the present invention includes, for example, a ceramic lamp base 13 having a high thermal conductivity of 17 W / (m · K) or more without using a forced air cooling fan. Since the exhaust heat utilizing heat conduction is performed by the heat transport flat plate 15 forming the plate type heat pipe, for example, a lamp cooling system such as the light source device 50 that emits the emitted light in the same direction is applied. Alternatively, by applying the light source device 50 equipped with the lamp cooling system as a light source of the illumination optical system 70 of the projector device 100, it is possible to eliminate the fan for forced air cooling that is indispensable in the prior art. Thus, while maintaining the cooling performance against the heat generation of the lamp bulb 11, it ensures quietness and hot air blows out from the exhaust port. No and it is possible to realize a user-friendly light source device and a projector device is easy to handle.

It is a conceptual diagram of the light source device for demonstrating an example of a structure of the lamp cooling system which concerns on this invention. It is a conceptual diagram for demonstrating an example of a structure of the projector apparatus to which the light source device shown in FIG. 1 is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Lamp bulb, 12 ... Reflector, 13 ... Lamp base, 13a ... Projection part, 14 ... Adhesive, 15 ... Heat transport flat plate, 15a ... Heat transport flat plate extension part, 16, 16A ... Metal material, 16a, 16Aa ... Resin, 16b, 16Ab ... cushion material, 17 ... housing, 17a ... opening, 18 ... heat insulation layer, 18a ... heat insulation layer extension, 19 ... lamp case, 20 ... front glass (front plate), 20a ... air inlet 20b ... exhaust port, 21 ... coating material, 21a ... coating material extension, 50 ... light source device, 60 ... fan, 70 ... illumination optical system (other than light source device), 80 ... electro-optical device, 80a ... driving unit , 90... Projection optical system, 100.

Claims (23)

  The lamp bulb comprises: a lamp bulb; a reflector that reflects the emitted light emitted from the lamp bulb; a lamp base that fixes the reflector and the lamp bulb; and a heat transport flat plate joined to the lamp base. The heat generated in is conducted to the heat transport flat plate and is radiated by natural convection from the surface of the housing to the outside of the housing or into the housing by a radiator provided on the heat transport flat plate. Lamp cooling system featuring.   2. The lamp cooling system according to claim 1, wherein the heat transport flat plate joined to the lamp base is in close contact with the inner wall surface of the housing and thermally joined to the housing. .   3. The lamp cooling system according to claim 1, wherein the lamp base is formed using a material having a thermal conductivity of 17 W / (m · K) or more.   4. The lamp cooling system according to claim 3, wherein the material forming the lamp base is ceramics.   5. The lamp cooling system according to claim 4, wherein the ceramic is made of any material selected from boron nitride, silicon nitride, aluminum nitride, and alumina.   6. The lamp cooling system according to claim 1, wherein the lamp base is extended until it abuts or approaches the tube bulb portion of the lamp bulb and is thermally joined to the bulb portion. A lamp cooling system characterized by comprising:   The lamp cooling system according to any one of claims 1 to 6, wherein copper or aluminum or high heat is applied to an arbitrary portion of the lamp base and / or to each joint surface of the lamp base and the heat transport flat plate. A lamp cooling system characterized in that a metal material of any conductivity is arranged.   The lamp cooling system according to any one of claims 1 to 6, wherein a resin having a high thermal conductivity is provided at an arbitrary portion of the lamp base and / or at each joint surface of the lamp base and the heat transport flat plate. A lamp cooling system characterized by being arranged.   The lamp cooling system according to any one of claims 1 to 6, wherein the cushioning material having high thermal conductivity and elasticity that press-bonds respective joint surfaces of the lamp base and the heat transport flat plate to each other. A lamp cooling system comprising a lamp base and a joint surface between the heat transport plate and the lamp base.   The lamp cooling system according to any one of claims 1 to 9, wherein a screw that presses each joint surface of the lamp base and the heat transport flat plate against each other, or a screw that crimps and fixes each joint surface. A lamp cooling system characterized in that the lamp cooling systems are brought into close contact with each other.   11. The lamp cooling system according to claim 1, wherein the heat transport flat plate is composed of a flat plate-shaped heat transport means including a meandering capillary tube in which a refrigerant is sealed.   The lamp cooling system according to any one of claims 1 to 11, wherein a heat insulating layer that shields other components in the casing from the periphery of the lamp bulb, the reflector, the lamp base, and the heat transport flat plate is provided in the casing. A lamp cooling system provided in   13. The lamp cooling system according to claim 12, wherein an opening for ventilating the air in the casing in which the other parts shielded by the heat insulating layer exist by natural convection is formed in the casing wall surface. And lamp cooling system.   The lamp cooling system according to any one of claims 1 to 13, wherein a portion of the outer wall surface of the housing that can be touched by a user is covered with a coating material made of either a low thermal conductivity resin or a low thermal conductivity member. A lamp cooling system characterized by that.   The lamp cooling system according to claim 14, wherein the cover made of the coating material is formed in any one of a grid shape, a slit shape, and a dot shape.   16. The lamp cooling system according to claim 1, further comprising a detachable lamp case that houses the lamp bulb, the reflector, and the lamp base.   17. The lamp cooling system according to claim 16, wherein the lamp case is interposed between respective joint surfaces of the lamp base and the heat transport flat plate, and the lamp base is fixed to an inner wall surface of the lamp case. Thus, when the lamp base is bonded to the heat transport flat plate via a bonding surface formed on the outer wall surface of the lamp case, the bonding surface of the lamp case is made of copper, aluminum, or high thermal conductivity. A lamp cooling system, characterized in that the lamp cooling system is formed of any metal material, resin having high thermal conductivity, or a cushion material having high thermal conductivity and elasticity.   18. The lamp cooling system according to claim 17, wherein the joint surface of the lamp case and the joint surface of the heat transport flat plate are pressed against each other, or the joint portion of the lamp case and the heat transport flat plate are A lamp cooling system in which the joint surfaces are brought into close contact with each other by screws that are fixed by crimping.   The lamp cooling system according to any one of claims 1 to 18, wherein a front plate having translucency is provided on an opening surface of the reflector.   The lamp cooling system according to any one of claims 1 to 19, further comprising a fan for forcibly cooling the inside of the reflector.   A light source device that emits outgoing light in the same direction, comprising the lamp cooling system according to any one of claims 1 to 20.   A projector device for projecting an image, wherein the illumination optical system that emits illumination light by integrating the emitted light emitted from the light source device according to claim 21, and the illumination light emitted from the illumination optical system A projector apparatus comprising: an electro-optical device that modulates according to information; and a projection optical system that projects a modulated light beam obtained by the electro-optical device.   23. The projector according to claim 22, further comprising a driving unit for supplying the image information to the electro-optical device for driving.

Images