JP2006210008A - Luminaire and vehicle using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire that can be made small in size, and a vehicle using the same. <P>SOLUTION: The luminaire comprises a device main body 1 in which an HID lump 2 and a reflecting plate 3 are housed; a ballast main body 4 which integrally has a socket part 4b to mount a mouthpiece part 23 of the HID lump 2 thereon and houses a ballast to light the HID lamp 2 and which is disposed so that the socket part 4b is faced inside the main body 1 from an opening part 1c formed thereat; and a seal packing 7 as a sealing means for sealing a gap between the peripheral part of the opening part 1c of the main body 1 and the ballast main body 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lighting fixture that lights a high-intensity discharge lamp such as a mercury lamp or a metal halide lamp, and a vehicle using the same.

  Conventionally provided lighting fixtures for lighting high-intensity discharge lamps (hereinafter referred to as HID lamps) include a socket in which a base of an HID lamp is mounted, an igniter that instantly starts and restarts the HID lamp, and an HID lamp. For example, an igniter and an inverter housed in one case (Patent Document 1), and a socket with an igniter built in (Patent Document 2) are provided. Yes.

  Also, a lighting fixture as shown in FIG. 8 is provided. The lighting fixture 100 includes a fixture main body (lamp body) 101, a cantilevered HID lamp 102, a reflector 103, and a base of the HID lamp 102. A ballast body 104 is integrally provided with a socket portion (not shown) to which the portion 102a is mounted, and a ballast (not shown) composed of an igniter and an inverter is accommodated therein.

  The instrument main body 101 is formed in a box shape with an open front surface, and a lens 105 is mounted using an adhesive or the like so as to cover the open front surface. Further, an opening 101a for inserting the HID lamp 102 and the ballast body 104 into the instrument body 101 is formed on the rear wall part of the instrument body 101, and a cap-shaped maintenance cover 106 that closes the opening 101a. Is detachably attached. In addition, an introduction hole 101b for introducing a harness (power supply line) 109 having one end connected to an external power source 108 such as an in-vehicle battery into the instrument body 101 is formed on the lower wall of the instrument body 101. Yes. Here, the gap between the mounting portion of the instrument main body 101 and the lens 105 is an adhesive or the like, and the gap between the peripheral edge of the opening 101a of the instrument main body 101 and the maintenance cover 106 is an annular seal packing 107 such as an O-ring. The gap between the inner surface of the introduction hole 101b of the main body 101 and the harness 109 is sealed by a sealing member 110 such as cylindrical silicon rubber, thereby ensuring the waterproofness inside the instrument main body 101.

  The reflection plate 103 has an opening 103a that allows the HID lamp 102 to face inside on the rear wall side, and an emission port 103b that emits light from the HID lamp 102 on the front wall side, and advances from the rear to the front. A reflective surface 103c is formed on the inner surface to reflect the light from the HID lamp 102 and emit it outward from the exit port 103b.

  The ballast body 104 is, for example, a synthetic resin molded product, and includes a substantially rectangular parallelepiped casing 104a, a socket portion formed on the front wall portion of the casing 104a and fitted with a base portion 102a of the HID lamp 102, and a casing. A power input portion 104b is formed integrally on the lower wall portion of 104a and to which the other end of the harness 109 is attached. The ballast body 104 stores the above-described ballast, and is electrically connected to the HID lamp 102 and the harness 109 via the socket part and the power input part 104b, respectively.

  The lighting fixture 100 is comprised from the said member, and each member is attached as follows. The reflector 103 is accommodated such that the exit port 103b faces the front opening of the instrument body 101. In the instrument body 101 in which the reflector 3 is accommodated in this way, the lens 105 is provided in the front opening of the instrument body 101. It is mounted so as to cover. Then, the ballast main body 104 in which the HID lamp 102 is mounted on the socket portion is inserted into the instrument main body 101 into the instrument main body 101, and the HID lamp 102 is inserted into the reflector 103 from the opening 103a of the reflector 103. The harness 109 introduced into the instrument main body 101 through the introduction hole 101b is stored in a state of being attached to the power input unit 104b. Thereafter, the maintenance cover 106 is attached to the instrument main body 101 together with the seal packing 107.

On the other hand, a lighting fixture 111 as shown in FIG. 9 is provided. In this lighting fixture 111, the socket portion is omitted from the lighting fixture 100 shown in FIG. Thus, the HID valve 102 itself is integrated with the ballast body 104. In addition, since the other structure is the same as that of the lighting fixture 100 shown in FIG. 8, the same code | symbol is attached | subjected and description is abbreviate | omitted.
JP 2001-338506 A (FIG. 2) JP 2002-367414 A (FIG. 1)

  The lighting fixtures as described above have been used for relatively large headlamps (head lamps) and auxiliary lamps (fog lamps, driving lamps, etc.) for large vehicles and the like. Therefore, it is desired to use it for relatively small headlamps and auxiliary lights, etc., and therefore, lighting equipment is required to be reduced in size and cost (particularly with the downsizing of the engine room, Reducing the depth (width dimension in the front-rear direction) of lighting fixtures is required).

  On the other hand, in the above Patent Document 1, the igniter and the inverter are housed in one case, and in Patent Document 2, the igniter is built in the socket. In the lighting apparatus 100 shown in FIG. However, these are still insufficient in size, and as shown in FIG. 9, the socket portion is omitted and the HID valve 102 itself is installed. Even the lighting fixture 111 integrated with the ballast body 104 could not be sufficiently reduced in size.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a lighting apparatus that can be reduced in size, and a vehicle using the same.

  In order to solve the above-mentioned problems, the lighting fixture according to claim 1 is provided with an appliance main body in which a cantilever type discharge lamp is housed and a socket portion in which a cap of the discharge lamp is mounted, and the discharge lamp is integrated. The ballast body is stored, and at least the socket part is arranged so that it faces the inside of the instrument body from the opening formed in the instrument body, and the gap between the peripheral edge of the instrument body opening and the ballast body is sealed. And a sealing means.

  According to the first aspect of the present invention, the ballast body integrally provided with the socket portion is arranged outside the instrument body, and the clearance between the peripheral edge of the opening of the instrument body and the ballast body is sealed by the sealing means. The size of the fixture main body can be reduced to a size that can accommodate at least a cantilever type discharge lamp, whereby the lighting fixture can be miniaturized.

  In the lighting fixture according to claim 2, in addition to the configuration of claim 1, the ballast body includes a power input portion for connecting a power supply line of an external power source to the ballast, and the power input portion is disposed in the fixture body. It is characterized by that.

  According to the second aspect of the present invention, since the power input portion is disposed in the waterproof instrument body, it is not necessary to consider the waterproof property of the connection portion between the power input portion and the power supply line of the external power source. As a result, the waterproof design of the ballast body is facilitated, and an inexpensive non-waterproof type power supply line for the external power source can be used, so that the manufacturing cost can be reduced.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the lighting fixture has an opening on one end side that allows the discharge lamp to face the inside, and reflects the light from the discharge lamp on the inner surface. A reflection plate that emits outward from the emission port on the end side is provided in the fixture body, and covers the gap between the opening periphery of the reflection plate and the discharge lamp, and reflects the light from the discharge lamp toward the reflection plate. A plate is provided outside the reflecting plate.

  According to the invention of claim 3, since the light leaking from the opening of the reflecting plate facing the discharge lamp is reflected to the reflecting plate side by the auxiliary reflecting plate, compared with the case where only the reflecting plate is provided, The utilization efficiency of the light from the discharge lamp can be improved.

  According to a fourth aspect of the present invention, in addition to the configuration of the first or second aspect, the lighting fixture has an opening that allows the discharge lamp to face the inside at one end side, and reflects the light from the discharge lamp on the inner surface. A reflector that emits outward from the exit outlet is rotatably provided in the fixture body, the discharge lamp is fixed to the reflector with the opening facing the inside of the reflector, and the ballast body is the release plate. The socket part is attached to the base of the electric lamp to be held by the reflector, and the sealing means is integrally projected from the peripheral part of the opening of the reflector to one end side so as to surround at least the socket part of the ballast body and together with the reflector. The rotating cylinder, the first sealing body that seals the gap between the inner surface of the cylinder and the ballast body, the gap between the outer surface of the cylinder and the peripheral edge of the opening of the instrument body, and the cylinder It is composed of a second sealed body that expands and contracts in response to rotation. To.

  According to the fourth aspect of the present invention, since the discharge lamp is fixed to the reflecting plate, the light from the discharge lamp is reflected from the inner surface of the reflecting plate without leaking from the opening of the reflecting plate and is emitted outward from the emission port. It can be made to radiate | emit, and this can improve the utilization efficiency of the light of a discharge lamp. Further, since the positional relationship between the discharge lamp and the reflecting plate does not change, the light distribution design of the light from the discharge lamp can be easily performed.

  In addition to the structure of Claim 1 or Claim 2, the lighting fixture of Claim 5 has an opening for allowing the discharge lamp to face inside at one end side, and reflects the light from the discharge lamp on the inner surface. A reflection plate that emits outward from the emission surface on the end side is rotatably provided in the instrument body, the discharge lamp is fixed to the reflection plate so as to face the inside of the opening of the reflection plate, and the ballast body is the release plate. The socket part is mounted on the base of the electric lamp so that it is held by the reflector and rotates together with the reflector, and the sealing means is a member that expands and contracts according to the rotation of the ballast body.

  According to the invention of claim 5, since the discharge lamp is fixed to the reflection plate, it can be reflected from the inner surface of the reflection plate without leaking light from the discharge lamp and emitted outward from the emission port. Thereby, the utilization efficiency of the light of a discharge lamp can be improved. Further, since the positional relationship between the discharge lamp and the reflecting plate does not change, the light distribution design of the light from the discharge lamp can be easily performed. In addition, since the number of constituent members is smaller than that of the fourth aspect, the manufacturing cost can be reduced.

  A vehicle according to a sixth aspect includes the lighting fixture according to any one of the first to fifth aspects and a discharge lamp that is turned on by the lighting fixture.

  According to the invention of claim 6, since the lighting fixture that can be reduced in size is provided, the space required for the installation of the lighting fixture can be reduced. The comfort can be improved by expanding the living room space.

  The present invention can reduce the size of the fixture body to a size that can accommodate at least a cantilevered discharge lamp, thereby reducing the size of the lighting fixture.

(Embodiment 1)
The lighting fixture of this embodiment is used, for example, for a headlamp L of a vehicle C as shown in FIG. 3. First, refer to FIG. 2 for the HID lamp 2 used as a light source for the lighting fixture. I will explain.

  The HID lamp 2 is, for example, a mercury lamp or a metal halide lamp. As shown in FIG. 2, the arc tube 20, a pair of electrodes 21 and 22 that are spaced apart from each other in the arc tube 20, and the arc tube 20 This is a so-called cantilever type discharge lamp composed of a base portion 23 to which the rear end side is fixed.

  The arc tube 20 is made of, for example, quartz glass. A substantially spherical discharge space 20a in which mercury, halogen gas, inert gas, or the like is enclosed is formed at the center, and electrodes are sealed at both ends. Spaces 20b and 20c are formed, and the spaces 20a, 20b and 20c are hermetically sealed.

  The electrode 21 electrically connects, for example, a discharge terminal 21a and a connection terminal 21b each formed in a long bar shape using tungsten, and a front end portion of the discharge terminal 21a and a rear end portion of the connection terminal 21b. And a metal foil 21c such as a molybdenum foil serving as a heat buffer material. The rear end of the discharge terminal 21a protrudes into the discharge space 20a of the arc tube 20, and the front end of the connection terminal 21b is It protrudes outward from the arc tube 20 and is disposed in the electrode sealing space 20 b of the arc tube 20.

  Similarly to the electrode 21, the electrode 22 includes a discharge terminal 22a and a connection terminal 22b, and a metal foil 22c that electrically connects the rear end portion of the discharge terminal 22a and the front end portion of the connection terminal 22b. And the front end of the discharge terminal 22a protrudes into the discharge space 20a of the arc tube 20, and the rear end of the connection terminal 22b protrudes outward from the arc tube 20 to seal the electrode of the arc tube 20. It arrange | positions in the stop space 20c.

  The electrodes 21 and 22 are disposed in the discharge space 20a so that the discharge terminals 21a and 22a are spaced apart from each other with a predetermined interval.

  The base portion 23 has the arc tube 20 fixed to the front end side, and a rod-shaped inner electrode 24 electrically connected to the rear end portion of the connection terminal 22b of the electrode 22 protruding from the arc tube 20 at the rear end. A substantially cylindrical base portion 23a inserted so as to protrude to the side, and a rear end side of the base portion 23a so as to surround the inner electrode 24, and an outer electrode 25 is provided around the outer surface. A cylindrical tube portion 23b, a flange portion 23c provided on the front end side of the side peripheral surface of the pedestal portion 23a, and a pair of socket fixing pins 23d and 23d protruding from the rear end portion are integrally provided. It is formed from a synthetic resin or the like. Further, the outer electrode 25 of the cylindrical portion 23b is electrically connected to the front end portion of the connection terminal 21b of the electrode 21 protruding from the arc tube 20 by a lead wire 26 and the like, and the lead wire 26 is protected by a protective tube 27. Yes.

  As described above, the HID lamp 2 is configured, and when such a HID lamp 2 is applied with a predetermined voltage (breakdown voltage) between the pair of electrodes 21 and 22, for example, the inside of the discharge space 20a. In this case, dielectric breakdown occurs and discharge is started, the enclosed mercury is vaporized, and light is emitted by plasma discharge of high-pressure mercury gas.

  Next, the lighting fixture of this embodiment is demonstrated using FIG. Unless otherwise specified, the left side of FIG. 1 is the front side of the lighting fixture, the right side of FIG. 1 is the rear side of the lighting fixture, the upper side of FIG. 1 is the upper side of the lighting fixture, and the lower side of FIG. 1 is referred to as the left side of the luminaire, and the front side of FIG. 1 is referred to as the right side of the luminaire.

  As shown in FIG. 1, the lighting fixture is integrally provided with a fixture main body 1 in which the HID lamp 2 and the reflector 3 are housed, and a socket portion 4 b in which a base portion 23 of the HID lamp 2 is mounted. A ballast body (not shown) to be lit is stored, and a ballast body 4 disposed so that the socket portion 4b faces the interior of the instrument body 1 from an opening 1c formed in the instrument body 1, and an opening of the instrument body 1 A sealing packing 7 is provided as a sealing means for sealing a gap between the peripheral edge 1c and the ballast body 4.

  The instrument body 1 is formed, for example, in a box shape whose front surface is opened using synthetic resin or the like, and a translucent lens 5 is mounted so as to cover the opened front surface. The rear surface portion of the instrument body 1 is formed with a substantially circular recess 1a that is recessed forward, and a substantially circular shape for inserting the HID lamp 2 into the instrument body 1 at the center of the bottom 1b of the recess 1a. An opening 1c having a shape is formed. A cylindrical ballast body fixing boss 1d is integrally protruded rearwardly above the recess 1a on the rear surface portion of the instrument body 1, and the ballast body 4 is fixed to the instrument body 1 on the boss 1d. A screw hole (not shown) corresponding to the fixing screw S is formed. An aiming bolt support portion 1e having a screw hole (not shown) that communicates the inside and the outside of the instrument body 1 is formed above the boss 1d on the rear surface of the instrument body 1, and this aiming bolt support is provided. By screwing the aiming bolt B into the screw hole of the portion 1e, the distal end side of the aiming bolt B can be inserted into the instrument body 1. On the other hand, a substantially cylindrical reflecting plate supporting boss 1f is integrally projected from the lower rear surface of the instrument body 1 toward the front, and the reflecting plate 3 can be freely rotated on the reflecting plate supporting boss 1f. A hole portion (not shown) is formed in which a rod-like support member 6 having a substantially spherical shaft portion 6a to be supported at the tip portion is inserted.

  The reflection plate 3 has an opening 3a that allows the HID lamp 2 to face inside on the rear end side, and an exit port 3b that emits light from the HID lamp 2 on the front end side, and expands from the rear toward the front. A reflective surface 3c that is formed in a bowl shape having a diameter and reflects light from the HID lamp 2 to be emitted outward from the emission port 3b is provided on the inner side surface. Further, a bearing portion 3d to which the shaft portion 6a of the support member 6 is rotatably connected is integrally projected on the lower end side of the outer surface of the reflecting plate 3, and the tip portion of the aiming bolt B is provided on the upper end side. A rib 3e having a hole (not shown) to be screwed is integrally projected. Here, the opening 3a of the reflecting plate 3 is formed to have a size that does not interfere with the HID lamp 2 when the reflecting plate 3 is rotated by the aiming bolt B as will be described later.

  The ballast main body 4 is, for example, a resin molded product, a substantially rectangular parallelepiped housing 4a, a socket portion 4b formed on the front wall portion of the housing 4a and fitted with a base portion 23 of the HID lamp 2, and a housing 4a. A power input part 4c to which a harness (not shown) formed on the lower wall part of the vehicle is connected to an in-vehicle battery (not shown), and a fixing screw protruding from the upper wall part of the housing 4a A rib 4d having an insertion hole (not shown) through which S is inserted is integrally provided.

  Here, the housing | casing 4a is formed so that at least a front wall part may have a flat surface of the magnitude | size which can block | close the recessed part 1a of the instrument main body 1. FIG. Moreover, since the power input part 4c is arrange | positioned out of the instrument main body 1, in order to prevent water from invading into the ballast main body 4 from the connection site | part with a harness, the connector which connects the power input part 4c and a harness As a waterproof type.

  On the other hand, the socket part 4b is formed in a cylindrical shape large enough to be inserted through the opening 1c of the instrument body 1, and is electrically connected to the inner electrode 24 and the outer electrode 25 of the base part 23, respectively. Terminals (not shown) are provided. A groove portion (not shown) for fixing the HID lamp 2 is formed on the inner side surface of the socket portion 4b. The groove portions correspond to the socket fixing pins 23d and 23d of the HID lamp 2, and the front end side is open. And a guide groove (not shown) extending in the front-rear direction and a stop groove (not shown) extending from the rear end portion of the guide groove along the inner surface in a direction perpendicular to the front-rear direction. This is a so-called bayonet structure.

  And attachment of the cap part 23 of the HID lamp 2 to the socket part 4b is performed as follows. First, the base portion 23 of the HID lamp 2 is inserted into the socket portion 4b with the pins 23d and 23d being placed along the guide groove of the groove portion, and then the pins 23d and 23d hit the rear end portions of the guide grooves, respectively. At this time, the HID lamp 2 is rotated about the front-rear direction as the rotation axis to move the pins 23d and 23d to the stop groove side. As a result, the HID lamp 2 is mounted on the socket portion 4b, and the pins 23d and 23d are caught in the stop groove, whereby the HID lamp 2 is prevented from being detached from the socket portion 4b.

  In the ballast body 4 configured as described above, an inverter having a function of converting a voltage supplied from an external power source such as a battery into a high-frequency AC voltage suitable for the operation of the HID lamp 2 and stably lighting the HID lamp, An igniter that instantly starts and restarts the HID lamp 2 and a ballast (discharge lamp lighting circuit) including a filter circuit having a noise suppression function are electrically connected to each terminal of the socket portion 4b and the power input portion 4c, respectively. According to such a ballast, the HID lamp 2 can be turned on by supplying power from the battery.

  For the sealing packing 7, for example, an annular rubber molded product such as an O-ring is used, and the clearance between the peripheral edge of the opening 1 c of the instrument body 1 and the ballast body 4 is sealed to ensure the waterproofness of the instrument body 1. belongs to. Such a packing 7 is not limited to a rubber molded product, and the same effect can be obtained by applying an elastic resin material or the like to the periphery of the opening 1c, the ballast body 4 or the like.

  The lighting fixture of this embodiment is comprised by the said member, and each member is attached as follows. The reflection plate 3 connects the shaft portion 6a of the support member 6 attached to the reflection plate support boss 1f of the instrument body 1 to the bearing portion 3d, and the screw hole of the aiming bolt support portion 1e of the instrument body 1 (see FIG. The tip of the aiming bolt B through which the notch is inserted is screwed into the hole (not shown) of the rib 3e, and is stored in the instrument body 1 with the emission port 3b facing forward. The reflecting plate 3 accommodated in the instrument main body 1 can adjust the reflection direction (that is, the optical axis) of light from the HID lamp 2 by the aiming bolt B. That is, as the aiming bolt B moves in the front-rear direction, the upper end rib 3e moves back and forth, so that the reflecting plate 3 rotates about the lower end side shaft portion 6a as a center of rotation. The emission direction (that is, the optical axis) can be adjusted in the vertical direction. By adjusting the optical axis in this way, variations due to assembly, deviations in the installation state of the lighting fixture, and the like are corrected, and a predetermined light distribution (where the brightness is determined by the reflector 3 and the lens 5). Illuminate). In addition, the optical axis adjustment mechanism by such an aiming bolt B is not limited to the one in the vertical direction, and if provided at a plurality of locations (at least two locations) such as the vertical direction and the horizontal direction of the instrument body 1, It is possible to adjust the optical axis of the reflecting plate 3 in various directions, up and down, left and right.

  In this way, the lens 5 is mounted on the instrument main body 1 in which the reflector 3 is stored so as to cover the front opening of the instrument main body 1. At this time, the lens 5 and the front opening of the instrument main body 1 are attached. The gap between the edges is sealed using an adhesive such as a hot melt adhesive, rubber packing, or the like to ensure the waterproofness of the instrument body 1. The instrument body 1 has the HID lamp 2 mounted on the socket part 4b, and the ballast body 4 with the seal packing 7 fitted on the socket part 4b. The HID lamp 2 and the socket part 4b are attached to the instrument body 1. In the state where the HID lamp 2 is inserted into the reflector 3 from the opening 3a of the reflector 3 and the seal packing 7 is fitted in the recess 1a of the instrument body 1, The fixing screw S inserted through the insertion hole of the rib 4d is fixed by screwing into the screw hole of the boss 1d of the instrument body 1. At this time, the sealing packing 7 elastically contacts at least the outer surface of the socket portion 4b and the inner surface of the concave portion 1a of the instrument body 1 over the entire circumference, whereby the peripheral edge of the opening 1c of the ballast body 4 and the instrument body 1 is obtained. This ensures that the waterproofness of the instrument body 1 is secured. The ballast body 4 is waterproofed except for the portions where the terminals of the socket portion 4b and the power input portion 4c are exposed, and is fixed to the instrument main body 1 as described above and connected to the power input portion 4c with a harness. Is connected to the socket portion 4b and the power input portion 4c to ensure waterproofness and prevent short-circuiting of the ballast due to water immersion.

  According to the lighting fixture of the present embodiment configured as described above, the ballast body 4 integrally including the socket portion 4b and the power input portion 4c is made to face the socket portion 4b from the opening 1c of the fixture body 1 to the inside. 8 and 9, for example, a member such as the maintenance cover 106 of the conventional lighting fixtures 100 and 111 shown in FIGS. 8 and 9 is not necessary, and the size of the fixture body 1 is reduced. It can be reduced to a size that can accommodate at least the HID lamp 2 and the reflector 3, thereby reducing the size of the lighting fixture. Moreover, since the sealing packing 7 is provided as a sealing means for sealing a gap between the peripheral edge of the opening 1c of the instrument body 1 and the ballast body 4, the waterproofness of the instrument body 1 can be ensured.

  As described above, since the lighting fixture of the present embodiment can be reduced in size, for example, when used in a vehicle as shown in FIG. 3, the space required for installation of the lighting fixture is reduced to reduce the size of the entire vehicle. Can be planned. Further, the lighting fixture of the present embodiment omits the portion of the fixture main body that covers the ballast body, and in particular, the depth (width dimension in the front-rear direction) of the lighting fixture can be reduced. Thus, it is possible to meet the demand for reducing the depth of the lighting fixture accompanying the downsizing of the engine room. As a result, it is possible to provide a vehicle in which the room space of the vehicle is expanded and the comfort when riding is improved. This point is the same also about the lighting fixture of Embodiments 2-5 mentioned later.

(Embodiment 2)
As shown in FIG. 4, the lighting fixture of the present embodiment is characterized by the configurations of the fixture main body 10 and the ballast main body 40, and the other configurations are the same as those of the first embodiment. The reference numerals are attached and the description is omitted.

  The instrument body 10 is formed, for example, in a box shape whose front surface is opened using synthetic resin or the like, and a translucent lens 5 is mounted so as to cover the opened front surface. A substantially circular concave portion 1a that is recessed forward is formed on the rear surface portion of the instrument main body 1. A substantially circular shape for inserting the HID lamp 2 into the instrument main body 10 is formed at the center of the bottom 1b of the concave portion 1a. An opening 1c having a shape is formed. Cylindrical ballast body fixing bosses 1d and 1d are integrally projected upward and downward on the concave portion 1a of the rear surface portion of the instrument body 10, and the ballast body 4 is connected to the boss 1d. A screw hole (not shown) corresponding to the fixing screw S for fixing to 10 is formed. Further, an aiming bolt support portion 1e having a screw hole (not shown) that communicates the inside and the outside of the instrument body 10 is formed above the boss 1d on the rear surface portion of the instrument body 10, and this aiming bolt support is provided. By screwing the aiming bolt B into the screw hole of the portion 1e, the distal end side of the aiming bolt B can be inserted into the instrument main body 10. On the other hand, a substantially cylindrical reflecting plate supporting boss 1f is integrally projected from the lower rear surface of the instrument body 10 toward the front, and the reflecting plate 3 can be freely rotated on the reflecting plate supporting boss 1f. A hole portion (not shown) is formed in which a rod-like support member 6 having a substantially spherical shaft portion 6a to be supported at the tip portion is inserted. In addition, an introduction hole (not shown) for introducing the harness into the instrument body 10 is formed in the lower surface portion of the instrument body 10, and a gap between the inner side surface of the introduction hole of the instrument body 10 and the harness Is sealed with a sealing member (not shown) such as cylindrical silicon rubber, for example, thereby preventing water from entering from the introduction hole.

  The ballast body 40 is, for example, a resin-molded product, and has a substantially rectangular parallelepiped housing 4a and a substantially cylindrical shape that protrudes from the front wall portion of the housing 4a and has a front portion facing the inside from the opening 1c of the instrument body 10. Seal projection 40a, socket 4b and power input 4c formed on the front surface of seal projection 40a, and ribs 4d and 4d projecting on the upper and lower walls of housing 4a, respectively. And the ballast body 40 accommodates the ballast as in the first embodiment.

  And in the lighting fixture of this embodiment, each member is attached as follows. The reflector body 3 and the lens 5 are attached to the instrument body 10 in the same manner as in the first embodiment. In the ballast body 40, the HID lamp 2 is mounted on the socket portion 4b, and the sealing packing 7 is fitted on the sealing projection 40a. In the instrument main body 10, the ballast main body 40 faces the HID lamp 2 from the opening 3a of the reflecting plate 3 into the reflecting plate, and the HID lamp 2, the socket portion 4b, and the power input portion 4c are opened from the opening 1c. A pair of ribs 4d is inserted into the instrument main body 10 and a harness passing through the introduction hole of the instrument main body 10 is attached to the power input part 4c and the sealing projection 40a is disposed in the recess 1a of the instrument main body 10. , 4d through the insertion holes are fixed by screwing the fixing screws S, S into the screw holes of the pair of bosses 1d, 1d of the instrument body 10, respectively. At this time, the seal packing 7 elastically contacts at least the outer surface of the sealing projection 40a of the ballast body 40 and the inner surface of the recess 1a of the instrument body 10 over the entire circumference, so that the ballast body 40 and the instrument body are in contact with each other. The clearance gap between the peripheral edge of the 10 opening portions 1c is sealed, and thus the waterproofness of the instrument body 10 is secured.

  According to the lighting fixture of the present embodiment configured as described above, the ballast body 40 integrally including the socket portion 4b and the power input portion 4c is made to face the socket portion 4b from the opening 1c of the fixture body 10 to the inside. Since the seal packing 7 is provided as a sealing means for sealing the gap between the peripheral edge of the opening 1c of the instrument body 10 and the ballast body 40 while being arranged outside the instrument body 10, the same as in the first embodiment. The size of the fixture body can be reduced to at least the size that can accommodate the HID lamp 2 and the reflector 3, thereby making it possible to reduce the size of the lighting fixture and to ensure the waterproofness of the fixture body. be able to.

  Although the above effect is the same as that of the first embodiment, the lighting fixture of the present embodiment can exhibit the following effect in addition to the above effect. That is, in the lighting fixture of the first embodiment, the power input portion 4c is disposed outside the fixture main body 1, so that water does not enter the ballast main body 4 from the connection portion between the power input portion 4c and the harness. For this reason, a waterproof connector is used as a connector for connecting the power input part 4c and the harness. However, in this embodiment, the power input part 4c is arranged in the instrument main body 10 in which waterproofness is ensured. Therefore, it is not necessary to consider the waterproofness of the connection part between the power input part 4c and the harness, and this facilitates the waterproof design of the ballast body. Moreover, since an inexpensive non-waterproof type power supply line for the external power supply can be used, the manufacturing cost can be reduced.

(Embodiment 3)
By the way, in Embodiments 1 and 2, the opening 3a of the reflecting plate 3 is large enough to prevent the reflecting plate 3 and the HID lamp 2 from interfering when the reflecting plate 3 is rotated by the aiming bolt B. Therefore, the light of the HID lamp 2 leaks from the gap between the periphery of the opening 3a and the HID lamp 2 and there is a problem that the light use efficiency deteriorates.

  Therefore, the lighting fixture of the present embodiment is characterized in that, as a means for solving this problem, as shown in FIG. Therefore, the same components are denoted by the same reference numerals and description thereof is omitted.

  The ballast main body 41 of the present embodiment is, for example, a resin molded product, and includes a substantially cylindrical housing 41a, a socket portion 4b and a power input portion 4c formed on the front wall portion of the housing 41a, and a housing 41a. An annular flange portion 41b provided around the outer surface and ribs 4d and 4d projecting from the upper portion and the lower portion of the casing 41a at the rear and the lower portion thereof are integrally provided, and the socket portion 4b includes an auxiliary member. A reflector 8 is attached. The ballast body 41 stores ballast as in the second embodiment.

  The auxiliary reflector 8 is formed in a circular dish shape, and includes a through hole 8a through which the HID lamp 2 and the socket 4b are inserted in the center, and a reflection surface that reflects light from the HID lamp 2 forward on the front surface. 8b. The auxiliary reflector 8 has an outer diameter dimension that always covers the gap between the opening 3a of the reflector 3 and the HID lamp 2 (even if the reflector 3 is rotated by the aiming bolt B). The size is set so that the gap between the periphery of the opening 3a and the HID lamp 2 can be covered.

  And in the lighting fixture of this embodiment, each member is attached as follows. The reflector body 3 and the lens 5 are attached to the instrument body 10 as in the second embodiment. In the ballast body 41, the HID lamp 2 is mounted on the socket portion 4b, and a seal packing 7 is fitted on a portion in front of the flange portion 41b of the housing 41a, and the HID lamp 2 and the socket portion 4b are inserted into the insertion hole 8a. The auxiliary reflector 8 is attached to the socket part 4b in a state of being inserted into the socket 4b. After this, the HID lamp 2, the auxiliary reflector 8 and the socket part 4b are inserted into the instrument body 10 through the opening 1c, and the HID lamp 2 faces the reflector 3 through the opening 3a of the reflector 3 to assist. The reflector 8 is arranged outside the reflector 3, the part of the housing 41 a fitted with the seal packing 7 is arranged in the recess 1 a together with the flange 41 b, and the harness passing through the introduction hole is connected to the power input part The ballast body 41 is inserted into the screw holes of the pair of bosses 1d and 1d of the instrument body 10 by screwing the fixing screws S and S through which the insertion holes of the pair of ribs 4d and 4d are inserted into the screw holes of the pair of ribs 4d and 4d. Is fixed to the instrument body 10. At this time, the seal packing 7 elastically contacts at least the outer surface of the housing 41a of the ballast main body 41 and the inner surface of the recess 1a of the instrument main body 10 over the entire circumference, so that the ballast main body 41 and the instrument main body 10 are in contact with each other. The gap with the periphery of the opening 1c is sealed, thereby ensuring the waterproofness of the instrument body 10.

  According to the lighting fixture of the present embodiment configured as described above, in addition to the effects of the second embodiment, the auxiliary reflector 8 is disposed so as to cover the gap between the opening 3a periphery of the reflector 3 and the HID lamp 2. Therefore, the light leaking from the opening 3a facing the HID lamp 2 of the reflecting plate 3 can be reflected to the reflecting plate 3 side by the auxiliary reflecting plate 8, and can be directed forward from the opening 3a. . In other words, according to the lighting apparatus of the present embodiment, the light leaked backward from the opening 3a of the reflector 3 that has been wasted in the first and second embodiments can be effectively used, whereby the HID lamp 2 It is possible to improve the utilization efficiency of light from.

(Embodiment 4)
As shown in FIG. 6, the lighting fixture of the present embodiment has an opening 3 a that allows the HID lamp 2 to face inside on the rear end side, and reflects light from the HID lamp 2 by a reflection surface 3 c provided on the inner surface. In addition, a reflector 30 that emits outward from the exit port 3b on the front end side is rotatably provided in the instrument body 11, and the HID lamp 2 is fixed to the reflector 30 in a state of facing the inside from the opening 3a of the reflector 30. The ballast body 42 is held by the reflector 30 by mounting the socket part 4b on the base part 23 of the HID lamp 2, and a sealing means for sealing the gap between the peripheral edge of the opening 11a of the instrument body 11 and the ballast body 42. Includes a cylindrical portion 31 that protrudes integrally from the peripheral portion of the opening 3a of the reflecting plate 30 toward the rear end side, surrounds the socket portion 4b and the sealing protruding portion 42b of the ballast body 42, and rotates together with the reflecting plate 30; The inner surface of the part 31 and the rose The sealing packing 70, which is a first sealing body that seals the gap with the main body 42, and the gap between the outer side surface of the cylindrical portion 31 and the periphery of the opening 11a of the instrument main body 11 and the rotation of the cylindrical portion 31 are sealed. It is comprised from the displacement absorber 71 which is the 2nd sealing body which expands-contracts according to. In addition, about the structure similar to the said Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The instrument body 11 is formed, for example, in a box shape whose front surface is opened using synthetic resin or the like, and a translucent lens 5 is mounted so as to cover the opened front surface. A substantially circular opening 11a for inserting the front portions of the HID lamp 2 and the ballast main body 42 into the instrument main body 11 is formed on the rear surface of the instrument main body 11, and an abbreviation surrounding the opening 11a. A cylindrical peripheral wall portion 11b is integrally protruded rearward. An aiming bolt support 1e having a screw hole (not shown) that communicates the inside and the outside of the instrument body 11 is formed above the opening 11a on the rear surface of the instrument body 11, and this aiming bolt is formed. By screwing the aiming bolt B into the screw hole of the support portion 1e, the tip side of the aiming bolt B can be inserted into the instrument body 11. On the other hand, a substantially cylindrical reflecting plate supporting boss 1f is integrally projected from the lower rear surface of the instrument body 11 toward the front, and the reflecting plate 3 can be freely rotated on the reflecting plate supporting boss 1f. A hole portion (not shown) is formed in which a rod-like support member 6 having a substantially spherical shaft portion 6a to be supported at the tip portion is inserted.

  The reflection plate 30 has an opening 3a that allows the HID lamp 2 to face inside on the rear end side, and an exit port 3b that emits light from the HID lamp 2 on the front end side, and expands from the rear toward the front. A reflective surface 3c that is formed in a bowl shape having a diameter and reflects light from the HID lamp 2 to be emitted outward from the emission port 3b is provided on the inner side surface. The opening 3a of the reflecting plate 30 is formed to a size that does not allow the flange portion 23c of the HID lamp 2 to be inserted. The arc tube 20 of the HID lamp 2 faces the inside from the opening 3a. The HID lamp 2 is arranged so that the flange portion 23c is brought into contact with the peripheral edge of 3a. In addition, a peripheral wall portion 32 surrounding the opening 3 a is integrally projected rearward on the reflector 30, and the rear end portion of the peripheral wall portion 32 is elastically attached to the rear surface portion of the flange portion 23 c of the HID lamp 2. In contact therewith, a fixture 33 for holding and fixing the HID lamp 2 at the periphery of the opening 3a of the reflector 30 is provided. For example, one end of the fixture 33 is attached to the lower rear end of the peripheral wall portion 32 so as to be rotatable about the left-right direction, and the other end is detachably attached to the upper rear end of the peripheral wall portion 32. With the other end side removed from the peripheral wall portion 32, the HID lamp 2 is inserted into the opening 3 a and the other end side is attached to the peripheral wall portion 32, so that the HID lamp 2 is nipped and fixed together with the reflector 30. . Further, a cylindrical tube portion 31 is integrally projected on the outer surface on the rear end side of the reflection plate 30, and the tube portion 31 surrounds the peripheral wall portion 32 and the socket portion 4 b of the ballast body 42. And a large-diameter portion 31b surrounding the sealing projection 42b of the ballast body 42.

  The ballast main body 42 is, for example, a resin molded product, and includes a substantially cylindrical housing 42a, a substantially cylindrical sealing protrusion 42b that protrudes from the front wall portion of the housing 42a and is accommodated in the cylindrical portion 31. The ballast main body 42 is integrally provided with a socket 4b formed on the front surface of the seal projection 42b and a power input 4c projecting on the lower wall of the housing 4a. The ballast is stored as in the first embodiment.

  For example, an annular rubber molded product such as an O-ring is used for the seal packing 70, and the gap between the inner surface of the large-diameter portion 31 b of the cylindrical portion 31 and the outer surface of the seal projection 42 b of the ballast body 42 is sealed. Is for. Further, the displacement absorber 71 is an elastic body such as an annular rubber molded product that can expand and contract in the radial direction, and seals the gap between the outer surface of the cylindrical portion 31 and the periphery of the opening 11a of the instrument body 11. At the same time, when the reflecting plate 30 is rotated by the aiming bolt B, it expands and contracts according to the displacement of the cylindrical portion 31 that rotates together with the reflecting plate 30. The packing 70 and the displacement absorber 71 are not limited to those described above, and suitable ones can be used depending on the situation.

  The lighting fixture of this embodiment is comprised by the said member, and each member is attached as follows. The reflector 30 connects the shaft portion 6a of the support member 6 attached to the reflector support boss 1f of the instrument main body 11 to the bearing portion 3d, and the screw hole (see FIG. The tip of the aiming bolt B into which the bolt (not shown) is inserted is screwed into the hole (not shown) of the rib 3e, the emission port 3b is directed forward, and the cylindrical part 31 is directed to the opening 11a of the instrument body 11. The instrument body 11 is accommodated. In this way, the lens 5 is attached to the instrument body 11 in which the reflecting plate 30 is accommodated in the same manner as in the first embodiment. Further, the displacement absorber 71 is fitted with the outer peripheral edge portion on the rear end edge portion of the peripheral wall portion 11b of the instrument body 11 and the inner peripheral edge portion with the rear end edge portion of the large-diameter portion 31b of the cylindrical portion 31, respectively. Each fitting part is attached to the instrument main body 11 by bonding, crimping, pressure welding or the like, thereby sealing the gap between the outer side surface of the cylindrical portion 31 and the peripheral edge of the opening 11a of the instrument main body 11. 11 waterproofing is secured.

  And in the instrument main body 11, the HID lamp 2 and the ballast main body 42 by which the sealing packing 70 was fitted by the sealing protrusion 42b are arrange | positioned as follows. The HID lamp 2 is fixed to the reflecting plate 30 by the fixture 33 in a state where the arc tube 20 faces the reflecting plate 30 from the opening 3a and the flange portion 23c is in contact with the edge of the opening 3a. Stored inside. The ballast main body 42 is held by the reflector 30 by attaching the socket part 4b to the base part 23 of the HID lamp 2 fixed to the reflector 30 as described above. At this time, the sealing packing 70 is at least By elastically contacting the inner surface of the large-diameter portion 31b of the cylindrical portion 31 and the outer surface of the sealing projection 42b over the entire circumference, the gap between the cylindrical portion 31 and the ballast body 42 is sealed. Waterproofness is ensured.

  According to the lighting fixture of the present embodiment configured as described above, the ballast main body 42 integrally including the socket portion 4b and the power input portion 4c is connected to the socket main portion 11 from the opening 11a of the fixture main body 11. Since it is arranged outside the fixture main body 11, the size of the fixture main body 11 can be reduced to a size that can accommodate at least the HID lamp 2 and the reflector 30. Can be miniaturized. In addition, since the gap between the peripheral edge of the opening 11a of the instrument body 11 and the ballast body 42 is sealed by a sealing means including the cylindrical portion 31, the seal packing 70, and the displacement absorber 71, the waterproofness of the instrument body 11 is secured. Can be secured.

  Moreover, since the HID lamp 2 is fixed to the reflecting plate 30 so that the HID lamp 2 rotates together with the reflecting plate 30, the opening 3a is reflected by the aiming bolt B as in the first to third embodiments. When the is rotated, it is not necessary to form it so as not to interfere with the HID lamp 2. Therefore, the utilization efficiency of light from the HID lamp 2 can be improved without providing an auxiliary reflector as in the third embodiment. Moreover, since the light from the HID lamp 2 does not leak backward from the opening 3a, the light from the HID lamp 2 can be used to the maximum, and therefore the light utilization efficiency is better than that of the third embodiment. . Further, since the HID lamp 2 is fixed to the reflecting plate 30, the positional relationship between the HID lamp 2 and the reflecting plate 30 does not change. Therefore, as in the first to third embodiments, the HID lamp 2 and the reflecting plate 3 are not changed. The light distribution design of the light from the HID lamp 2 can be easily performed as compared with the case where the positional relationship between the HID lamp 2 and the relative position changes relatively.

(Embodiment 5)
As shown in FIG. 7, the lighting fixture of the present embodiment is simplified by reducing the components of the lighting fixture of the fourth embodiment, and the same reference numerals are given to the same configurations as those of the fourth embodiment. A description thereof will be omitted.

  As shown in FIG. 7, the lighting fixture of the present embodiment includes a fixture body 11 in which a reflector 30 to which the HID lamp 2 is fixed is rotatably housed, and a socket portion 4 b in a base portion 23 of the HID lamp 2. It is a member that seals the gap between the ballast body 43 held by the reflector 30 by being mounted, the peripheral edge of the opening 11a of the instrument body 11 and the ballast body 43, and expands and contracts according to the rotation of the ballast body 43. A displacement absorber 71 is provided.

  Here, the reflecting plate 30 is the same as that of the fourth embodiment except that the reflecting plate 30 does not have the cylindrical portion 31. The ballast body 43 is, for example, a resin molded product, and is formed on the substantially rectangular parallelepiped housing 4a, the socket portion 4b formed on the front wall portion of the housing 4a, and the lower wall portion of the housing 4a. A power input part 4c is integrally provided, and a substantially flat sealing plate part 9 is provided on the front wall part of the casing 4a so as to project the socket part 4b forward and cover the front wall part of the casing 4a. It is fixed. The ballast main body 43 stores ballast as in the first embodiment.

  The displacement absorber 71 is used as a sealing means that seals the gap between the peripheral edge of the opening 11a of the instrument body 11 and the ballast body 43, and is, for example, a substantially annular rubber molded product that can expand and contract in the radial direction. When the reflecting plate 30 is rotated by the bolt B, the ballast body 43 that rotates together with the reflecting plate 30 expands and contracts according to the displacement (rotation).

  The lighting fixture of this embodiment is comprised by the said member, and each member is attached as follows. The reflector 30 connects the shaft portion 6a of the support member 6 attached to the reflector support boss 1f of the instrument main body 11 to the bearing portion 3d, and the screw hole (see FIG. The tip of the aiming bolt B through which the notch is inserted is screwed into the hole (not shown) of the rib 3e, and is stored in the instrument body 11 with the emission port 3b facing forward. In this manner, the lens 5 is mounted on the instrument main body 11 in which the reflecting plate 30 is housed in the same manner as in the first embodiment.

  And in the instrument main body 11, the HID lamp 2 and the ballast main body 43 are arrange | positioned as follows. The HID lamp 2 is fixed to the reflecting plate 30 by a fixture 33 with the arc tube 20 facing the reflecting plate 30 from the opening 3a and the flange portion 23c in contact with the edge of the opening 3a. The ballast body 43 is held by the reflector 30 by attaching the socket part 4b to the base part 23 of the HID lamp 2.

  In the instrument body 11 in which the HID lamp 2 and the ballast body 43 are arranged in this way, the displacement absorber 71 seals the outer peripheral edge part to the rear end edge part of the peripheral wall part 11b of the instrument main body 11 and the inner peripheral edge part. Each of the fitting parts is fitted to the peripheral part of the plate 9 and attached to the instrument main body 11 by bonding, crimping, pressing, etc., whereby the peripheral part of the opening 11a of the instrument main body 11 and the ballast main body are attached. 43 is sealed to ensure the waterproofness of the instrument body 11.

  According to the lighting fixture of this embodiment comprised by the above, compared with the said Embodiment 4, the cylinder part 31 and the packing 70 for a seal are abbreviate | omitted, and the simple board | plate part 9 was provided instead. Since the same effect can be obtained, it is possible to reduce the manufacturing cost by reducing the number of components and the assembly process.

It is a schematic sectional drawing of the lighting fixture of Embodiment 1 of this invention. It is the side view which notched a part of HID lamp used for the lighting fixture same as the above. It is a perspective view of the front part of a vehicle using the lighting fixture same as the above. It is a schematic sectional drawing of the lighting fixture of Embodiment 2 of this invention. It is a schematic sectional drawing of the lighting fixture of Embodiment 3 of this invention. It is a schematic sectional drawing of the lighting fixture of Embodiment 4 of this invention. It is a schematic sectional drawing of the lighting fixture of Embodiment 5 of this invention. It is a schematic sectional drawing of the conventional lighting fixture. It is a schematic sectional drawing of the other conventional lighting fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument main body 1c Opening part 2 HID lamp 4 Ballast main body 4b Socket part 7 Seal packing 23 Base part

Claims (6)

  An instrument main body in which a cantilever type discharge lamp is housed and a socket part to which a base of the discharge lamp is mounted are integrally provided to house a ballast for lighting the discharge lamp, and at least a socket part is formed in the instrument body. A lighting device comprising: a ballast body disposed so as to face the inside of the instrument body from the opened opening; and a sealing means for sealing a gap between the peripheral edge of the opening of the instrument body and the ballast body.   The lighting apparatus according to claim 1, wherein the ballast body includes a power input unit that connects a power supply line of an external power source to the ballast, and the power input unit is disposed in the apparatus body.   There is an opening on one end side that allows the discharge lamp to face inside, and a reflection plate that reflects the light from the discharge lamp on the inner surface and emits it outwardly from the exit port on the other end side is provided inside the fixture body, and is reflected The auxiliary reflecting plate which covers the clearance gap between the opening peripheral edge of a board and the said discharge lamp, and reflects the light from the said discharge lamp to the reflecting plate side is provided in the outer side of the reflecting plate. The lighting fixture of 2.   There is an opening on one end side that allows the discharge lamp to face inside, and a reflecting plate that reflects the light from the discharge lamp on the inner surface and emits it outwardly from the exit port on the other end side is freely rotatable in the instrument body The discharge lamp is fixed to the reflector in a state facing the inside from the opening of the reflector, the ballast body is held by the reflector by attaching a socket part to the base of the discharge lamp, and the sealing means is The cylindrical portion that protrudes integrally from the peripheral portion of the opening of the reflector plate to one end side, surrounds at least the socket portion of the ballast body and rotates together with the reflector plate, and seals the gap between the inner surface of the cylinder portion and the ballast body It is comprised by the 1st sealing body and the 2nd sealing body which expands-contracts according to rotation of a cylinder part while sealing the clearance gap between the outer surface of a cylinder part, and the opening part periphery of an instrument main body. The lighting fixture according to claim 1 or 2.   There is an opening on one end side that allows the discharge lamp to face inside, and a reflecting plate that reflects the light from the discharge lamp on the inner surface and emits it outwardly from the exit surface on the other end side is freely rotatable in the instrument body The discharge lamp is fixed to the reflection plate so as to face the opening of the reflection plate, and the ballast body is held by the reflection plate by attaching a socket part to the base of the discharge lamp together with the reflection plate. The lighting apparatus according to claim 1, wherein the lighting device is a member that rotates and the sealing means expands and contracts according to the rotation of the ballast body.   A vehicle comprising: the lighting fixture according to any one of claims 1 to 5; and a discharge lamp that is turned on by the lighting fixture.

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