CN208381804U - LED straight lamp - Google Patents

Abstract

A kind of LED straight lamp, the lamp cap of fluorescent tube opposite end is respectively arranged on including fluorescent tube, power supply, two, and the LED lamp panel in the fluorescent tube, LED lamp panel is equipped with multiple LED light sources, it is electrically connected between LED light source and power supply by LED lamp panel, and lamp cap includes side wall and end wall, side wall is tubulose, axial direction of the end wall perpendicular to side wall, it include an at least hole on end wall, hole can be such that the lamp cap inner space is connected to outside, and the radial area of hole is less than the 1/10 of the radial area of end wall.

Description

LED straight lamp

Technical field

The utility model relates to field of lighting appliances, and in particular to a kind of LED straight lamp.

Background technique

LED lighting technology it is positive fast-developing and instead of traditional incandescent lamp and fluorescent lamp.Compared to being filled with indifferent gas For the fluorescent lamp of body and mercury, LED straight lamp need not filling mercury.Therefore, various by seeming traditional energy-saving lamp bubble (CFLs) and in the lighting system of household or workplace dominated of the illumination option such as fluorescent tube, LED straight lamp is not intended to Other places is increasingly becoming the illumination option of people's height expectation.The advantages of LED straight lamp the durability comprising promotion and the service life and Compared with low power consuming.Thus it is contemplated that LED straight lamp will be the illumination option of escapable cost after all factors.

Existing LED straight lamp has following a few class problems to need to solve.When electricity of the LED straight lamp in running, inside lamp cap The electronic component in source can continue to generate thermal energy, and the thermal energy generated can not shed except lamp cap with cross-ventilation, instead can It is piled up in inside lamp cap, life of product and reliability is caused to reduce.Also, according to ideal gas equation:

PV=nRT

Wherein P is pressure, and V is gas volume, and n is the amount of gas, and R is ideal gas constant, and T is absolute temperature.If In the case where the volume of gas and amount are fixed, temperature is proportional to pressure, that is to say, that temperature is higher, and pressure is cured It is high；And temperature is lower, then pressure is lower.(for example, lamp cap in the case where being confined space or approximate confined space inside lamp cap It connect through gluing mode between fluorescent tube and the junction of lamp cap and fluorescent tube is made not have gap or gap atomic small), lamp cap The volume and amount of internal gas are fixed value or early-fixed value, the related variation caused stress of variation meeting of temperature at this time, The cataclysm of especially temperature may cause the pressure inside lamp cap and sharply be raised and lowered, and it is disconnected can so to can increase electrical connection part The chance (such as soft board and hardboard joint loosen) opened.In addition, prolonged high temperature increases the pressure inside lamp cap, lead It sends a telegraph subcomponent to need to bear high temperature and high pressure for a long time, will so reduce the service life of electronic component.High temperature inside lamp cap Or high pressure not only will affect the reliability of LED straight lamp, or even can also improve the risk of electronic component spontaneous combustion, it is careless slightly can Fire hazard accident.

In the assembling process of LED straight lamp, since the pressure inside fluorescent tube and lamp cap can be with the group of fluorescent tube and lamp cap Dress process and increase, thus when lamp cap is assembled into fluorescent tube, has resistance, and then has a negative impact for packaging efficiency.Except this Except, in the disassembly process of LED straight lamp, since (temperature inside fluorescent tube and lamp cap drops the negative pressure inside fluorescent tube and lamp cap Will lead to negative pressure when low), thus by lamp cap by disassembling on fluorescent tube when also has resistance.

Utility model content

In view of the above problem, the utility model set forth below and embodiment.The utility model provides a kind of new LED Straight lamp, to solve the above problems.

In one embodiment, a kind of LED straight lamp, including fluorescent tube, power supply, two lamp caps are provided, the fluorescent tube is respectively arranged on Opposite end；LED lamp panel, be set to the fluorescent tube in, the LED lamp panel be equipped with multiple LED light sources, the LED light source and It is electrically connected between the power supply by the LED lamp panel, lamp cap includes side wall and end wall, and the side wall is tubulose, the end Wall includes an at least hole on the end wall perpendicular to the axial direction of the side wall, described hole make the lamp cap inner space with Outside connection, the radial area of described hole are less than the 1/10 of the radial area of end wall.

It is selectable, the axial direction for being axially parallel to the side wall of described hole.

Selectable, the periphery of center to the end wall of the end wall has an end wall radius r, described hole and the end The center of wall has the relationship of distance a L, the end wall radius r and the distance L to meet following formula:

0.4r≦L≦0.8r。

It is selectable, it include two described holes on the end wall, two described holes are arranged symmetrically in relation to each other.

Selectable, described hole is located at the center of the end wall.

Selectable, the lamp cap includes multiple described holes, described hole using the axle center of the lamp cap as symmetrical centre, It is distributed on the end wall in a manner of point symmetry around the axle center of the lamp cap.

Selectable, the opening shape of described hole is circle.

Selectable, when the LED straight lamp is installed on lamp holder, at least one described hole is high in vertical direction In the axle center of fluorescent tube and lamp cap.

Selectable, interior sidewall surface of the described hole not with the side wall trims.

The hole of the utility model can provide the effect of heat dissipation and discharge, for making the inside of the lamp cap Yu the fluorescent tube Pressure remained constant, and so that the internal pressure of the lamp cap and the fluorescent tube is equal to the lamp cap and pressed with the external of the fluorescent tube Power.

By the various embodiments for the LED straight lamp that the utility model is proposed, when LED straight lamp is in running, lamp cap Thermal energy caused by the electronic building brick of internal power supply can penetrate at least one hole with certain area ratio, and more have Efficient shed except lamp cap.At least one described hole can also be used as the channel of discharge, even if the gas inside lamp cap is swollen It is swollen also to be released through at least one described hole, so that the pressure in lamp cap will not be with gradient of temperature.In this way, product Service life be improved with reliability.

In conclusion in the assembling process or disassembly process of LED straight lamp, since gas can be circulated by hole, and Fluorescent tube can remain constant (equal with the external pressure of lamp cap with fluorescent tube) with the internal pressure of lamp cap, so lamp cap can be convenient ground It is assembled into fluorescent tube or by disassembling on fluorescent tube.Therefore, the efficiency of assembly and disassembly is improved.

Detailed description of the invention

Fig. 1 is the schematic diagram of the LED straight lamp of an embodiment of the present invention；

Fig. 2 is the perspective view of the explosion of the LED straight lamp of an embodiment of the present invention；

Fig. 3 is the partial schematic diagram of the LED straight lamp of an embodiment of the present invention；

Fig. 4 is partial cutaway view of the Fig. 3 on the direction A-A '；

Fig. 5 is the partial cutaway view of the LED straight lamp of an embodiment of the present invention；

Fig. 6 is the partial cutaway view of the LED straight lamp of another embodiment of the utility model；

Fig. 7 to Fig. 8 is the partial schematic diagram of the LED straight lamp of the multiple embodiments of the utility model；

Fig. 9 to Figure 12 is the partial cutaway view of the LED straight lamp of the multiple embodiments of the utility model；

Figure 13 is the partial cutaway view of the LED straight lamp of an embodiment of the present invention；

Figure 14 is the partial schematic diagram of the LED straight lamp of an embodiment of the present invention.

Specific embodiment

The utility model proposes a kind of LED straight lamps, to solve the above problems.For the above-mentioned mesh for making the utility model , feature and advantage can become apparent understandable, specific embodiment of the utility model is done specifically with reference to the accompanying drawing It is bright.The narration of following various embodiments of the utility model is merely to illustrating and being illustration, and allow those skilled in the art can be whereby The scope of the utility model is understood, it is not intended that it is the whole embodiments of the utility model or limits the invention to Specific embodiment.The same or similar label is used to indicate the same or similar element.

Proper noun used in this only for description specific embodiment rather than limitation the utility model.Unless there are clear Point out quantity, otherwise ＂ or ＂ ＂ described in ＂ mono- ＂, ＂ before element also includes several aspect.It should be appreciated that such as ＂ packet Including ＂, ＂ to have the conjunctions such as ＂ comprising ＂ or ＂ is for defining the technical characteristic in embodiment (such as position, unit, step, element Or ingredient etc.), it is not for excluding other existing, possible or additional technical characteristics.

It should be appreciated that ＂ and/or ＂ include one or more combinations of element arranged side by side.Element, ingredient, portion The first the 2nd term such as ＂ or the 3rd ＂ of ＂ of ＂, ＂ of ＂ before position and/or the nouns such as region are for separating technical characteristic in order to retouching It states, and is not intended to be limited in any.Therefore, first element, ingredient, position or region can also be named as second element, ingredient, position, Or region, without departing from the teaching of the utility model.

Specific embodiment of the utility model is described in detail with reference to the accompanying drawing.And in the situation not conflicted Under, each embodiment of the utility model and each technical characteristic of each embodiment can any combination.

Situations such as this case is if any CLAIM OF PRIORITY, the content of the utility model can in conjunction with the content of all female cases, but When explaining claim, as the utility model and female case have it is any conflict or inconsistent place, then with the power of the utility model Benefit requires, subject to specification and application history.

Fig. 1 and Fig. 2 are please referred to, the utility model provides a kind of LED straight lamp 50 in an embodiment comprising fluorescent tube 100, LED lamp panel 200 and lamp cap 300.LED lamp panel 200 is set in fluorescent tube 100, and two lamp caps 300 are then respectively arranged on fluorescent tube 100 Both ends.Fluorescent tube 100 can use plastics fluorescent tube, glass lamp, plastics and metal mixed fluorescent tube or glass and metal mixed lamp Pipe, the size of two lamp caps 300 can be identical or different.Please continue to refer to Fig. 2, LED lamp panel 200 is equipped with several LED Light source 202, lamp cap 300 is interior to be equipped with power supply 400.Power supply 400 can be the single unit of integrated (for example, power supply 400 All elements are all set in an ontology) and be set in a lamp cap 300 of 100 one end of fluorescent tube.Alternatively, power supply 400 can be with It is the component (for example, the element of power supply 400 is divided into two parts) of two separation and is respectively arranged at two lamp caps 300 In.It is electrically connected between LED light source 202 and power supply 400 by LED lamp panel 200.Bendable circuit can be used in LED lamp panel 200 Soft board.In addition, in some embodiments, it (does not include being connected to that the length of bendable circuit soft board, which is greater than the length of fluorescent tube, The length of two lamp caps 300 at 100 both ends of fluorescent tube), or the two transition regions (circle of such as fluorescent tube at the both ends at least more than fluorescent tube 100 All contraction places) between middle section length.In one embodiment, as the vertical of the bendable circuit soft board of LED lamp panel 200 It is greater than the length of fluorescent tube 100 to projected length.The middle section of LED lamp panel 200 can be fixed on the inner peripheral surface of LED lamp tube 100 On.Opposite two short sides of LED lamp panel 200 are then not fixed on the inner peripheral surface of fluorescent tube 100.LED lamp panel 200 includes two freedom portion 210, two freedom portion 210 are respectively arranged on opposite two short sides of LED lamp plate 200, axial direction of two freedom portion 210 along fluorescent tube 100 It is stretched out respectively by the opening of the opposite end in 100 axial direction of fluorescent tube, and two freedom portion 210 can extend respectively to lamp cap 300 Inside and with power supply 400 be electrically connected.For connecting the hollow conductive pin of external power supply there are two being set on each lamp cap 300 310, when LED straight lamp 50 will be installed on lamp holder, hollow conductive pin 310 be can be inserted into the correspondence conductive trough in lamp holder, be made LED straight lamp 50 can be electrically connected with lamp holder.

In one embodiment, LED lamp panel 200 includes bendable circuit soft board, and bendable circuit soft board sequentially has first Line layer, dielectric layer and the second line layer (not shown).The thickness of second line layer is greater than the thickness of first line layer, and/or The projected length of LED lamp panel 200 is greater than the length of fluorescent tube 100.The end region of LED lamp panel 200 extends beyond the end of fluorescent tube 100 End and do not have LED light source 202 thereon, there are two isolated perforation (not shown), this two wears the end region tool of LED lamp panel 200 Distinguish electrical communication first line layer and the second line layer in hole.This two perforation is not connected to avoid short circuit each other.

In this situation, the thicker thickness of the second line layer allows the second line layer to be able to support first line layer and dielectric Layer, moreover it is possible to make the LED lamp panel 200 for being connected to the inner peripheral surface of fluorescent tube 100 not easily moveable or deform, the good of product can be improved whereby Rate.In addition, first line layer and the second line layer electrical communication each other, so that the circuit layout of first line layer can extend downwardly The circuit layout of entire LED lamp panel 200 is completed to the second line layer.In some embodiments, first line layer connection anode And the second line layer connects cathode.Also, since circuit layout may be provided at two layers, the area and LED lamp panel 200 of each single layer Width can reduce, thus more LED lamp panels 200 can be placed on production line to improve production efficiency.Further, LED light The first line layer for exceeding 100 end of fluorescent tube and the end region of not set LED light source 202 of plate 200 and the second line layer are available The circuit layout of power supply 400 is completed, so that power supply 400 can be set up directly on the bendable circuit soft board of LED lamp panel 200.

It is referring to figure 3. the partial schematic diagram of LED straight lamp 50 with Fig. 4, Fig. 3, Fig. 4 is Fig. 3 cuing open on the direction A-A ' Face figure.The lamp cap 300 of the present embodiment further includes side wall 301, end wall 302 and hole 320.Side wall 301 is tubulose.Side wall 301 with Fluorescent tube 100 is coaxial and is connected to each other, described coaxially to mean that lamp cap 300 and fluorescent tube 100 have tolerance during fabrication, because The axle center of both this may be slightly offset, but lamp cap 300 and fluorescent tube 100 are coaxial by and large.End wall 302 is generally vertical In the axial direction of side wall 301, and end wall 302 connects the one end of side wall 301 far from fluorescent tube 100, described vertically to mean end wall 302 may be because there is tolerance during fabrication with side wall 301, therefore the two non-90 degree is vertical but slightly tilts, and this still belongs to In the vertical range.It, can common shape with side wall 301 even if end wall 302 is slightly tilted relative to the axial direction of side wall 301 At the space for power supply 400 to be arranged and lamp holder can be matched.The inside that side wall 301 and end wall 302 form lamp cap 300 is empty Between, for power supply 400 then in the inner space of lamp cap 300, hole 320 then penetrates the end wall 302, that is, lamp cap 300 Inner space can be in communication with the outside via hole 320, and gas can circulate in the inner space of lamp cap 300 through hole 320 Between the external world.Also, hole 320 facilitates pressure release, and optical inductor is configured in lamp cap 300 and is aligned hole 320, during LED straight lamp 50 is installed in lamp holder (not shown), to be used for light detecting and protection against electric shock.

Power supply 400 can be modularization kenel, such as power supply 400 can be to be integrated in integrated power module.Power supply 400 also may be used (for example, all elements of power supply 400 are all set in an ontology) and lamp is set in the form of being the single unit of integrated In one lamp cap 300 of 100 one end of pipe.Alternatively, power supply 400 can be the component of two separation (for example, the element of power supply 400 It is divided into two parts) and be respectively arranged in two lamp caps 300.Power supply 400 further includes conductive pin 410, conductive pin 410 are extended to the inside of hollow conductive pin 310 by power supply 400, and are connect with hollow conductive pin 310, in other words, power supply 400 It can pass through conductive pin 410 and hollow conductive pin 310 and be electrically connected external power supply.Hollow conductive pin 310 is set to end wall 302 Outside and along the axially extending of side wall 301.From the point of view of Fig. 4, when LED straight lamp 50 is installed on horizontal lamp holder (not shown), The axial direction of side wall 301 and horizontal direction H are generally parallel, and two hollow conductive pins 310 are on vertical direction V in same height And overlap each other, at this point, position of the hole 320 on vertical direction V can be higher than the axle center of side wall 301.

In the present embodiment, as shown in figure 4, the axial direction of hole 320 is substantially parallel to the axial direction of side wall 301.Hole herein The axial definition in hole 320 is that hole 320 is worn by the interior sidewall surface (one side positioned at the inner space of lamp cap 300) of end wall 302 Extending direction that is saturating and extending to outer side surface (positioned at extraneous one side).And in the present embodiment, hole 320 can generally be cut The interior sidewall surface (one side positioned at the inner space of lamp cap 300) of neat side wall 301.Specifically, the one of the hole wall of hole 320 Part can generally be trimmed with a part of the interior sidewall surface of side wall 301.

In the present embodiment, as shown in figure 4, in the radial direction (the vertical direction V for being substantially parallel to Fig. 4) of lamp cap 300, The periphery definition of the center (axle center of side wall 301 passes through place) of end wall 302 to end wall 302 has an end wall radius r, then hole 320 are defined as distance L with the distance between the center of end wall 302.Distance L is the 2/5 to 4/5 of end wall radius r, that is to say, that Hole 320 meets following formula relative to the position at the center of end wall 302:

0.4r≦L≦0.8r

When hole 320 meets aforesaid equation relative to the position at the center of end wall 302, LED straight lamp 50 and the external world Between gas circulation can reach preferable efficiency.

Also, hole 320 can there are two.As shown in figure 5, two inclined holes 320 are generally symmetrically to set each other It sets.When LED straight lamp 50 is installed on horizontal lamp holder, fluorescent tube 100 and lamp cap 300 approximately axially on be parallel to level side To H, one of hole 320 is higher than the axle center of fluorescent tube 100 and lamp cap 300 on vertical direction V, and another hole 320 exists It is lower than the axle center of fluorescent tube 100 and lamp cap 300 on vertical direction V.Between the axial direction of this two circular cavities 320 and the axial direction of side wall 301 All accompany acute angle.When adstante febre, top hole 320 shown in fig. 5 are conducive to hot gas and rise (edge past power supply 400 due to running Vertical direction V rise) during, be passed to the external world along top hole 320, lower section hole 320 shown in fig. 5 is then advantageous The inner space of lamp cap 300 is flowed into along lower section hole 320 in extraneous cold air.So be conducive to the exchange of hot and cold air, And obtain better heat dissipation effect.

Please refer to the LED straight lamp 50 of Fig. 6, Fig. 6 and Fig. 4 the difference is that the kenel of hole 320.As shown in fig. 6, not With in embodiment, hole 320 can not be trimmed with the interior sidewall surface of side wall 301.Hole 320 compared to Fig. 4, the hole of Fig. 6 320 periphery from end wall 302 is farther out.

If the opening of hole 320 is excessive, extraneous dust may be easy to enter the inside of lamp cap 300 by hole 320 Space, and be deposited on power supply 400, to be adversely affected to whole heat dissipation effect.In order to avoid dust passes through hole 320, the radial area of hole 320 is preferably the 1/10 of the radial area for being less than end wall 302, and in the case, dust is not allowed relatively The inner space of lamp cap 300 is easily entered by hole 320.LED straight lamp 50 is by taking the standard of T8 as an example, outside fluorescent tube 100 Diameter range is 25mm to 28mm, and the outer diameter (diameter of the end wall 302 i.e. shown in Fig. 4 in vertical direction V) of lamp cap 300 is equal to fluorescent tube 100 outer diameter.If the diameter of the vertical direction V shown in Fig. 4 of end wall 302 is 25mm, end wall 302 is on vertical direction V Product is 490.625 square millimeters (i.e. equal to its radius square multiplied by 3.14), opening area of the hole 320 in vertical direction V (radial area) range then can be 0.5 square millimeter to 6 square millimeters.For example, the radial area of hole 320 is 6 square millimeters And the radial area of end wall 302 is 490.625 square millimeters, then the radial area of hole 320 is about the radial area of end wall 302 1/100.In the case, dust is just difficult to enter the inner space of lamp cap 300 by hole 320.In different embodiments, Hole 320 can be 0.5 square millimeter to 3 square millimeters in opening area (radial area) range of vertical direction V, in this feelings Under condition, dust is more difficult to enter the inner space of lamp cap 300 by hole 320.

In different embodiments, lamp cap 300 can also include Air Filter (not shown), and Air Filter, which is one layer, has many net holes Mesh.The Air Filter can coverage hole 320, for example, Air Filter to be fixed on to the outer side surface or inner sidewall of end wall 302 Face makes Air Filter coverage hole 320, in this way, Air Filter also can effective blocks dust, and keep good gas circulation effect Rate.

Please refer to the lamp cap 300 of Fig. 7, Fig. 7 and Fig. 3 the difference is that the kenel of hole 320.In Fig. 3, hole 320 Opening shape is circle.And in the present embodiment, as shown in fig. 7, the opening shape of hole 320 also can be long and flat arc-shaped Shape, the opening shape of the hole 320 of Fig. 7 may be defined as two opposite long side 320l (arc-shaped side) and between two long side 320l Two opposite short side 320s, and between two long sides have spacing I, the shortest distance of the spacing I between two long side 320l.? Under this situation, the short many of length of the spacing I of hole 320 relative to its long side 320l, therefore, even if the hole 320 of Fig. 7 Spacing I be equal to or slightly less than Fig. 3 hole 320 opening diameter (i.e. aperture), the opening area of the hole 320 of Fig. 7 The opening area of the hole 320 of Fig. 3 can be still greater than.In this way, which the hole 320 of Fig. 7 not only can effectively prevent most ash Dirt passes through, simultaneously because its opening area is larger, moreover it is possible to keep preferable gas circulation efficiency.In one embodiment, hole 320 The distance of spacing I is between 0.5mm between 1.5mm, and the length of the long side 320l of hole 320 is between 1mm between 7mm.

In different embodiments, the quantity, shape of hole 320, position or configuration mode can make different set as needed Meter is described in detail as after.

Please refer to the lamp cap 300 of Fig. 8, Fig. 8 and Fig. 7 the difference is that the quantity and kenel of hole 320, in the present embodiment In, there are two the holes 320 of Fig. 8, and the two holes 320 are generally mutually symmetrical.Two symmetrical holes shown in Fig. 8 320 are conducive to hot and cold air exchange, so can reach preferable gas circulation efficiency, and obtain better heat dissipation effect.

Please refer to the LED straight lamp 50 of Fig. 9, Fig. 9 and Fig. 4 the difference is that the kenel of power supply 400 and hole 320.Fig. 9 Power supply 400 include power supply circuit board 420 and one or more electronic components 430, power supply circuit board 420 include opposite to each other and Parallel the first face 421 and the second face 422.The first face 421 and the second face 422 of power supply circuit board 420 are generally perpendicular to side The axial direction of wall 301, the second face 422 of power supply circuit board 420 relative to the first face 421 close to the end wall 302 of lamp cap 300, and extremely At least part of power supply 400 is located on the lamp cap 300.Electronic component 430 is set to the first face 421 of power supply circuit board 420. Electronic component 320 is, for example, capacitor.

In the present embodiment, as shown in figure 9, the inner sidewall of the second face 422 contact end wall 302 of power supply circuit board 420 Face.Also, the conductive pin 410 (not showing in Fig. 9) of power supply 400 directly can penetrate hollow conductive pin 310 by power supply circuit board 420 Among；Alternatively, hollow conductive pin 310 can directly contact the correspondence contact on the second face 422 of power supply circuit board 420.In addition, from The first face 421 of power supply circuit board 420 is then connected to by portion 210.In different embodiments, the second face of power supply circuit board 420 422 can not also contact the interior sidewall surface of end wall 302, but the inner sidewall in the second face 422 and end wall 302 of power supply circuit board 420 Certain spacing is separated between face, the interval between power supply circuit board 420 and end wall 302 is conducive to the circulation of gas.In addition, Second face 422 (not shown) of the connection power supply circuit board 420 of freedom portion 210.

In the present embodiment, as shown in figure 9, the second face 422 of power supply circuit board 420 completely attaches to the inside of end wall 302 Wall surface, and coverage hole 320.Whereby, heat caused by power supply circuit board 420 can through hole 320 directly with extraneous cold sky Gas carries out heat exchange, reaches good heat dissipation effect.Also, hole is completely covered in the second face 422 of power supply circuit board 420 In the case where 320, the inner space that dust can be stopped by power supply circuit board 420 without entering lamp cap 300 through hole 320, Therefore, the opening area of the hole 320 of Fig. 9 can be greater than the opening area of the hole 320 of Fig. 4.

Please refer to the LED straight lamp 50 of Figure 10, Figure 10 and Fig. 9 the difference is that the power supply 400 of Figure 10 further includes heat dissipation member Part or drive module 440.Heat dissipation element or drive module 440 are set to the second face 422 of power supply circuit board 420, and heat dissipation element Or drive module 440 extends in hole 320.In one embodiment, heat dissipation element 440a be metal heat-conducting tube or thermally conductive fin, Heat caused by the electronic component 430 on power supply circuit board 420 can be conducted to heat dissipation element 440a whereby, then through heat dissipation member The cold air in 300 external world part 440a and lamp cap carries out heat exchange, reaches good heat dissipation effect.Since drive module 440b is electricity Main heating source in the electronic component in source 400, therefore, by (the general electronic component of general electronic component 430 in electronic component 430 heat production is less relative to drive module 440b) it is provided separately with drive module 440b, be conducive to improve heat dissipation effect.Example Such as, general electronic component 430 is set to the first face 421 of power supply circuit board 420, and the drive module 440b that heat production is relatively high Then set on the second face 422 of power supply circuit board 420 and close to an at least hole 320.Heat dissipation element or drive module 440 can be set to In hole 320, whereby, heat caused by heat dissipation element or drive module 440 can be carried out directly with the extraneous cold air of lamp cap 300 Heat exchange reaches good heat dissipation effect.Wherein, drive module 440b include inductance, transistor or integrated circuit etc. one or The relatively high electronic component of multiple specific heat production, thus inductance, transistor or integrated circuit can be set to hole 320 in favor of Improving radiating effect.

In different embodiments, multiple heat dissipation elements of power supply 400 or drive module 440 can be respectively arranged on multiple holes In 320.For example, inductance, transistor and integrated circuit can be located separately in multiple holes 320；Alternatively, the multiple of power supply 400 dissipate Warmware, inductance, transistor and integrated circuit can be located separately in multiple holes 320.

Please refer to Figure 10 and Figure 11, Figure 10 and Figure 11's the difference is that heat dissipation element or drive module 440 and hole 320 it Between, whether what it is in hole 320 is in the radial direction closely sealed.(this example is heat dissipation element to the heat dissipation element or drive module 440 of Figure 10 440a) with hole 320 in the radially closely sealed each other of hole 320, that is to say, that heat dissipation element or drive module 440 are radially Section shape and the lucky hole 320 of size opening shape in the radial direction it is complementary with size.In one embodiment, it radiates Element or at least one element of drive module 440 and at least one hole 320 described hole 320 radially each other substantially It is closely sealed.And the heat dissipation element or drive module 440 (this example is drive module 440b) and hole 320 of Figure 11 is in the diameter of hole 320 It is upward then there is gap " G ", therefore when heat dissipation element or drive module 440 are located in hole 320, outside air still can be freely Through gap " G " flow into hole 320 in.Wherein, heat dissipation element or drive module 440 and hole 320 radially it is closely sealed not Equal to airtight effect is reached, may still there be naked eyes difficulty between the heat dissipation element or drive module 440 and hole 320 of Figure 10 and see Gap, but the gap under such state is very less than the gap of Figure 11 " G ", and can largely hinder cool ambient air stream Enter hole 320.

Please refer to the LED straight lamp 50 of Figure 12, Figure 12 and Fig. 4 the difference is that the kenel of power supply 400.The power supply of Figure 12 400 include power supply circuit board 420, one or more electronic components 430 and heat dissipation element or drive module 440.Power supply circuit board 420 include the first face 421 and the second face 422 relative to each other and generally parallel, and the first face 421 of power supply circuit board 420 The axial direction of side wall 301 is substantially parallel to the second face 422.Electronic component 430 and heat dissipation element or (this example of drive module 440 It is drive module 440b) all on the first face 421 of power supply circuit board 420, also, 440 phase of heat dissipation element or drive module For electronic component 430 close to hole 320.In one embodiment, heat dissipation element 440a be metal heat-conducting tube or thermally conductive fin, by Heat caused by this power supply circuit board 420 can be conducted to heat dissipation element 440a, and heat dissipation element 440a is relative to electronic component 430 Closer hole 320, is conducive to heat dissipation element 440a and cool ambient air carries out heat exchange, reaches good heat dissipation effect.? In one embodiment, drive module 440b is relative to (the heat production general electricity less relative to drive module 440b of electronic component 430 Subcomponent 430) closer hole 320, be conducive to heat caused by drive module 440b and cool ambient air carries out heat exchange, reaches To good heat dissipation effect.Wherein, drive module 440b includes the more particular electronic component of one or more heat production.The spy Determining electronic component includes inductance, transistor or integrated circuit, therefore inductance, transistor or integrated circuit can be relative to general electronics Element 430 is close to hole 320, in favor of improving radiating effect.

As shown in figure 13, in the present embodiment, power supply 400 further includes the electronic component 430 on power supply circuit board 420 With heat dissipation element or drive module 440.Specifically, power supply circuit board 420 includes opposite the first face 421 and the second face 422, Electronic component 430 and heat dissipation element or drive module 440 are set to the first face 421, and the second face 422 then with vertical ribs 330 Third side 333 is connected to each other.In the present embodiment, the height relative to side wall 301 of vertical ribs 330 is by its first side 331 It is maintained unanimously to second side 332, correspondingly, the power supply circuit board 420 for being connected to third side 333 is then horizontal rather than inclined shape State.Heat dissipation element or drive module 440 can be radiating piece, inductance, transistor or integrated circuit, and heat dissipation element or driving mould 440 opposing electronic element 430 of block is closer to hole 320.In addition to this, vertical ribs 330 make the second face of power supply circuit board 420 Maintain certain spacing between 422 and side wall 301, and vertical ribs 330 are from the first side 331 to the extending direction of second side 332 It is directed towards hole 320.In this way, which the space for allowing gas to flow can be maintained between power supply 400 and side wall 301, and hot gas Also it is easy to be passed to the external world via hole 320 from lamp cap 300.

Please refer to the lamp cap 300 of Figure 14, Figure 14 and Fig. 1-4 the difference is that the kenel of hole 320.The hole 320 of Figure 14 Positioned at the center of end wall 302, but not limited to this.In the assembling process of LED straight lamp 50, assembler is needed two lamp caps 300 are assembled into the both ends of fluorescent tube 100.If one of lamp cap 300 has been assembled to wherein one end of fluorescent tube 100, and another lamp First 300 when being just assembled into the other end of fluorescent tube 100, since the inside of fluorescent tube 100 at this time belongs to closing or approximate closed space, The gas for being present in the inner space of fluorescent tube 100 and lamp cap 300 can make internal pressure increase because of being compressed.Work as inside When pressure increase, assembler needs that lamp cap 300 could be assembled on fluorescent tube 100 using bigger strength, so will cause The difficulty that group is loaded onto.And hole 320 then can be used as pressure-releasing hole, during lamp cap 300 is assembled into fluorescent tube 100, be present in lamp Pipe 100 and the gas of the inner space of lamp cap 300 can be released by hole 320, tie up the internal pressure of fluorescent tube 100 and lamp cap 300 It holds constant, is so conducive to the assembling operation of LED straight lamp 50, efficiency when assembled can be improved.On the other hand, if lamp cap 300 There is no any hole, the fluorescent tube 100 of LED straight lamp 50 becomes negative because of the reduction of temperature with the pressure meeting inside lamp cap 300 Pressure, the hole 320 as relief passage allow extraneous gas to may flow into fluorescent tube 100 and make fluorescent tube 100 and lamp cap with lamp cap 300 300 internal pressure can remain constant (equal with the external pressure of lamp cap 300 with fluorescent tube 100), thus in LED straight lamp 50 Disassembly process in, lamp cap 300 can be convenient by being disassembled on fluorescent tube 100.

In addition to this, when LED straight lamp 50 works, internal electronic component can generate thermal energy, make LED straight lamp 50 internal temperature increases.According to ideal gas equation, when the temperature increases, gas volume inside LED straight lamp 50 with The product of pressure will increase, if but gas when being the inside for being closed in fluorescent tube 100 and lamp cap 300, this indicates the volume of gas Be it is fixed, therefore, as gas temperature increases, pressure also be will increase, this indicate when LED straight lamp 50 continues working, Internal electronic component needs to bear high temperature and high pressure for a long time, will so reduce the service life of electronic component.And hole 320 has There is the function of discharge, that is to say, that when the gas temperature inside LED straight lamp 50 increases, the gas of expansion can be by hole 320 It releases, so can effectively reduce the pressure inside LED straight lamp 50.

Power supply in other aspects for can be power conversion module/circuit or power module, it includes art technologies The ordinary meaning that personnel recognize ＂ power supply ＂ this term, including alternating voltage is converted into DC voltage and supplies electricity to LED Or the circuit of LED module.＂ power supply ＂ referred to herein refers to it by the alternating current line of force (AC powerline) or ballast (ballast) external signal transmitted supplies electricity to LED module.These different terms such as ＂ power conversion module/circuit ＂ and ＂ Power module ＂, can be used in herein or in following continuous application case to represent ＂ power supply ＂.

As there is any term to conflict in present application with the term in any application case of present application institute CLAIM OF PRIORITY, Or the term conflict in cited priority application case combined with present application should be with this Shen then when explaining claim It please be used in case and subject to the term of definition.

Although the utility model about LED straight lamp has been disclosed in a manner of example and preferred embodiment as above, answer What is understood is that the utility model is not limited in revealed embodiment.Anyone skilled in the art are not departing from this reality It in novel spirit and scope, can make various changes or modifications, therefore the protection scope of the utility model should be with right It is required that subject to limited range.

Claims (17)

1. a kind of LED straight lamp, which is characterized in that the LED straight lamp includes:

Fluorescent tube；

Power supply；

Two lamp caps are respectively arranged on the opposite end of the fluorescent tube；And

LED lamp panel is set in the fluorescent tube, and the LED lamp panel is equipped with multiple LED light sources, the LED light source and the power supply Between be electrically connected by the LED lamp panel；

The lamp cap includes side wall and end wall, and the side wall is tubulose, axial direction of the end wall perpendicular to the side wall, the end It include an at least hole on wall, described hole is connected to the lamp cap inner space with outside, and the radial area of described hole is small In the 1/10 of the radial area of end wall.

2. LED straight lamp as described in claim 1, which is characterized in that the axis for being axially parallel to the side wall of described hole To.

3. LED straight lamp as claimed in claim 1 or 2, which is characterized in that the periphery at the center of the end wall to the end wall There is an end wall radius r, there are a distance L, the pass of the end wall radius r and the distance L in the center of described hole and the end wall System meets following formula:

0.4r≦L≦0.8r。

4. LED straight lamp as claimed in claim 1 or 2, which is characterized in that on the end wall include two described holes, two A described hole is arranged symmetrically in relation to each other.

5. LED straight lamp as described in claim 1, which is characterized in that described hole is located at the center of the end wall.

6. LED straight lamp as claimed in claim 1 or 2, which is characterized in that the lamp cap includes multiple described holes, described Hole is distributed in the end wall around the axle center of the lamp cap in a manner of point symmetry using the axle center of the lamp cap as symmetrical centre On.

7. LED straight lamp as claimed in claim 1 or 2, which is characterized in that the opening shape of described hole is circle.

8. LED straight lamp as claimed in claim 2, which is characterized in that when the LED straight lamp is installed on lamp holder, until A few described hole is higher than the axle center of fluorescent tube and lamp cap in vertical direction.

9. LED straight lamp as claimed in claim 1 or 2, which is characterized in that the described hole not interior sidewall surface with the side wall It trims.

10. a kind of LED straight lamp, which is characterized in that the LED straight lamp includes:

Fluorescent tube, the fluorescent tube use glass material；

Power supply, the power supply include conductive pin, power supply circuit board and one or more electronic building bricks, the power supply circuit board packet The first face and the second face relative to each other and parallel are included, the electronic building brick includes at least a capacitor；

LED lamp panel, in the fluorescent tube and the middle section of the lamp plate is fixed on the inner peripheral surface of the fluorescent tube, wherein institute LED lamp panel is stated equipped with multiple LED light sources, is electrically connected between the LED light source and the power supply by the LED lamp panel； And

Two lamp caps, are respectively arranged on the opposite end of the fluorescent tube and size is identical, set on each described lamp cap there are two Hollow conductive pin, the conductive pin are extended to the inside of the hollow conductive pin by the power supply, and with the hollow conduction Needle connection, when the LED straight lamp is installed on lamp holder, the hollow conductive pin is inserted into the correspondence conductive trough in the lamp holder In, so that the LED straight lamp is electrically connected with the lamp holder；The lamp cap includes side wall and end wall, and the side wall is pipe Shape and coaxial with the fluorescent tube and be connected to each other, axial direction of the end wall perpendicular to the side wall, the side wall and the end Wall forms the inner space of the lamp cap, and the power supply is set in the inner space, the second face of the power supply circuit board There is a spacing between the interior sidewall surface of the end wall；It wherein, include an at least hole on the end wall, described hole is circle And it is connected to the lamp cap inner space with outside, the axial direction for being axially parallel to the side wall of described hole, described hole Radial area is less than the 1/10 of the radial area of end wall.

11. LED straight lamp as claimed in claim 10, which is characterized in that when the LED straight lamp is installed on horizontal lamp holder When, the axial direction and horizontal direction parallel of the side wall, two hollow conductive pins in vertical direction in same height and It overlaps each other, position of the described hole in vertical direction is higher than the axle center of the side wall.

12. LED straight lamp as claimed in claim 10, which is characterized in that the periphery at the center of the end wall to the end wall There is an end wall radius r, there are a distance L, the pass of the end wall radius r and the distance L in the center of described hole and the end wall System meets following formula:

0.4r≦L≦0.8r。

13. LED straight lamp as claimed in claim 11, which is characterized in that the power supply be the single unit of integrated and It is set in the lamp cap of described fluorescent tube one end.

14. LED straight lamp as claimed in claim 11, which is characterized in that the power supply is the component and difference of two separation It is set in two lamp caps.

15. such as the described in any item LED straight lamps of claim 10 to 14, which is characterized in that described hole quantity is two, that This is symmetrical arranged, and when the LED straight lamp is installed on horizontal lamp holder, the fluorescent tube is axially parallel to level with the lamp cap Direction, one of described hole are higher than the axle center of the fluorescent tube and the lamp cap, and another described hole in vertical direction Hole is lower than the axle center of the fluorescent tube and the lamp cap in vertical direction.

16. such as the described in any item LED straight lamps of claim 10 to 14, which is characterized in that described hole is located at the end wall Center.

17. such as the described in any item LED straight lamps of claim 10 to 14, which is characterized in that described hole not with the side wall Interior sidewall surface trim.