Heat insulation plate structure of automobile lamp

Abstract

The utility model discloses a heat insulation plate structure of an automobile lamp, which comprises a heat insulation plate arranged in a lamp body, the heat insulation plate divides an inner cavity of the lamp body into a first cavity and a second cavity, and a first light source and a second light source which are arranged in the lamp body are respectively arranged in the first cavity and the second cavity. A louvered exhaust hole is formed in the heat insulation plate, and the first cavity and the second cavity are communicated through the louvered exhaust hole, so that expanded hot air formed by long-time light emitting of the first light source or the second light source is released from the first cavity to the second cavity or released from the second cavity to the first cavity. The pressure reduction effect is achieved, light overflow cannot be caused, use is safer, the second light source in the second cavity can be well protected, meanwhile, heat can be homogenized, and the problem that the stability of the lamp body is damaged due to excessive concentration of the heat is solved.

Description

Technical field:

[0001] The utility model relates to the technical field of automobile lamps, in particular to a heat insulation board structure of automobile lamps. Background technology:

[0002] The field of automotive lighting design has always paid great attention to the heat dissipation of automotive lighting. Regardless of whether traditional bulbs or LEDs are used as light sources, the heat generated by high-power, long-term lighting will cause the lamp body and other plastic parts to be at risk of melting. In addition, as automobile OEMs pay more and more attention to automotive lighting, the complexity of the structure and the diversification of functions of the lamps have put forward higher requirements on the internal space and heat dissipation of the lamps.

[0003] Except for high-end accessories such as external cooling equipment, the common heat insulation components of existing headlights are only metal stamping sheets installed near the light source, which isolate the heat source from other contact surfaces of the lamp body. Most of them do not have technical requirements for shape and structure, and the sheet metal design is relatively random, and does not reflect the impact on heat transfer. In closed and narrow space conditions, the high pressure state caused by the heating of the air inside the lamp body and the heat that has nowhere to be released cannot be ignored. Over time, it will also have an adverse effect on the lamp body, the light distribution lens, and even the light source itself.

[0004] For example, the Chinese utility model patent with patent number CN205137287U, this utility model relates to a heat-resistant structure of a vehicle lamp, belonging to the technical field of heat-resistant structure design of vehicle lamps. A heat-resistant structure of a vehicle lamp includes a lamp body, a heat insulation board, a reflector, and a bulb; one end of the heat insulation board is fixedly connected to the reflector, and the other end is bent downward and fixedly connected to the decorative ring, the lamp body is fixedly arranged below the heat insulation board; the bulb is fixedly arranged above the heat insulation board.

[0005] The above-mentioned heat-resistant structure of the car lamp is only applied to the car lamp environment with a single light source (i.e. one bulb). When it is applied to a dual-light source car lamp, the dual light sources (i.e. two bulbs) are separated by a heat insulation board, so that the two light sources are respectively accommodated in two mutually separated chambers in the lamp body. This will cause the space of each chamber to become smaller and narrower, and because the heat insulation board is a metal plate with a non-porous structure, the two mutually separated chambers cannot be connected. After a certain light source is lit, the air in the chamber where the light source is located is heated, causing a high-pressure state and heat that has nowhere to be released, that is, it cannot be transferred to another chamber. Over time, it will also have an adverse effect on the lamp body, the light distribution lens, and even the light source itself.

[0006] In view of this, the inventor proposes the following technical solution. Utility model content:

[0007] The utility model aims to overcome the deficiencies of the prior art and provide a heat insulation board structure for a car lamp.

[0008] In order to solve the above technical problems, the utility model adopts the following technical scheme: the heat insulation board structure of the automobile lamp includes a heat insulation board installed in the lamp body, the heat insulation board divides the inner cavity of the lamp body into a first chamber and a second chamber, the first light source and the second light source installed in the lamp body are respectively placed in the first chamber and the second chamber, and the heat insulation board is formed with louvered exhaust holes, and the first chamber and the second chamber are connected through the louvered exhaust holes, so that the expanded hot air formed by the long-term emission of the first light source or the second light source is released from the first chamber to the second chamber or from the second chamber to the first chamber.

[0009] Furthermore, in the above technical solution, the second chamber is located at the lower side of the first chamber, and the size of the second chamber is smaller than the size of the first chamber.

[0010] Furthermore, in the above technical solution, a plurality of process grooves for increasing strength are formed on one surface of the heat insulation board, and correspondingly, a plurality of reinforcing ribs corresponding to the process grooves are formed on the other surface of the heat insulation board.

[0011] Furthermore, in the above technical solution, the louvered exhaust holes are arranged in the middle of the heat insulation board and are located beside the process groove.

[0012] Furthermore, in the above technical solution, the louvered exhaust holes and the process grooves are parallel to each other and perpendicular to the direction of the light path of the car lights.

[0013] Furthermore, in the above technical solution, an arc-shaped plate is stamped and formed in the middle of the insulation board, and the louvered exhaust hole is formed on the inner wall of the arc-shaped plate. One end of the louvered exhaust hole passes through one surface of the insulation board, and the other end of the louvered exhaust hole is a gap formed by the end of the arc-shaped plate and the other surface of the insulation board, which is parallel to the other surface of the insulation board, so that the cross-section of the louvered exhaust hole is in the shape of an arc.

[0014] Furthermore, in the above technical solution, an installation groove for inserting the heat insulation board is provided in the lamp body, and the upper and lower inner walls of the installation groove are provided with positioning grooves; the edges of the upper and lower surfaces of the heat insulation board are stamped with fixing knobs, and after the outer edge of the heat insulation board is embedded in the installation groove, the fixing knob is engaged with the positioning groove for positioning.

[0015] Furthermore, in the above technical solution, the cross-section of the fixed knob is arc-shaped.

[0016] Furthermore, in the above technical solution, the edges of the upper and lower surfaces of the heat insulation board are stamped to form elastic flanges protruding outward, and the elastic flanges are elastically pressed into contact with the upper and lower inner walls of the installation groove for positioning.

[0017] Furthermore, in the above technical solution, the elastic flange is triangular in shape.

[0018] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: when the first light source works for a short time and the second light source does not work, the heat generated by the first light source will basically not be transferred to the second chamber or will be transferred to the second chamber in small amounts through the louvered exhaust holes, that is, it will basically not affect the second light source. At the same time, heat insulation is achieved by the heat insulation board, so that the heat will not contact with other surfaces of the lamp body except the surface where the first chamber is located, thereby reducing the contact area and reducing the risk of the lamp body melting due to heat; when the second light source works for a short time and the first light source does not work, the above technical effects can also be achieved, which will not be elaborated here. The most important thing is that when the second light source works for a long time and the first light source does not work, the second light source generates a large amount of heat and gathers in the second chamber. At this time, the hot air in the second chamber expands and increases the pressure. Since the insulation board is formed with louvered exhaust holes, the hot air expanded in the second chamber is released into the first chamber, achieving a decompression effect without causing light overflow. It is safer to use and can well protect the second light source in the second chamber. At the same time, it can evenly distribute the heat and solve the problem of excessive heat concentration damaging the stability of the lamp body. Description of the drawings:

[0019] Figure 1 It is an assembly structure diagram of the utility model;

[0020] Figure 2 yes Figure 1 A partial enlarged view of part A;

[0021] Figure 3 It is the front view of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the utility model;

[0023] Figure 5 It is a stereogram from another viewing angle of the utility model. Specific implementation method:

[0024] The utility model is further described below in conjunction with specific embodiments and drawings.

[0025] See Figure 1-3 As shown, a heat shield structure of a vehicle lamp comprises a heat shield 2 installed in a lamp body 1. A decorative frame 5 and an outer light distribution mirror 6 are arranged at the front end of the lamp body 1, so that a closed inner cavity is formed in the lamp body 1.

[0026] The heat insulation board 2 is made of a stainless steel substrate or an aluminum plate, and has high strength and a stable structure.

[0027] In this embodiment, combined with Figure 1As shown, the heat insulation board 2 is used to insulate the dual light sources and release the hot air expanded in the cavity where the light source is located to other spaces of the lamp body, thereby achieving a decompression effect without causing light overflow.

[0028] Specifically, combined Figure 1-2 As shown, the heat insulation board 2 divides the inner cavity of the lamp body 1 into a first chamber 11 and a second chamber 12, and the first light source 3 and the second light source 4 installed in the lamp body 1 are respectively placed in the first chamber 11 and the second chamber 12, that is, the first light source 3 is placed in the first chamber 11, and the second light source 4 is placed in the second chamber 12. The heat insulation board 2 is formed with a louvered exhaust hole 21, and the first chamber 11 and the second chamber 12 are connected through the louvered exhaust hole 21, so that the expanded hot air formed by the long-term lighting of the first light source 3 or the second light source 4 is released from the first chamber 11 to the second chamber 12 or from the second chamber 12 to the first chamber 11.

[0029] During specific operation, when the first light source 3 works for a short time and the second light source 4 does not work, the heat generated by the first light source 3 will basically not be transferred to the second chamber 12 or will be transferred to the second chamber 12 in small amounts through the louvered exhaust holes 21, that is, it will basically not affect the second light source 4. At the same time, heat insulation is achieved through the heat insulation board 2, so that the heat will not contact with other surfaces of the lamp body 1 except the surface where the first chamber 11 is located, thereby reducing the contact area and reducing the risk of the lamp body 1 melting due to heat; when the second light source 4 works for a short time and the first light source 3 does not work, the above-mentioned technical effects can also be achieved, which will not be elaborated here. The most important thing is that when the second light source 4 works for a long time and the first light source 3 is not working, the second light source 4 generates a large amount of heat and gathers in the second chamber 12. At this time, the hot air in the second chamber 12 expands and increases the pressure. Since the insulation board 2 is formed with louvered exhaust holes 21, the hot air expanded in the second chamber 12 is released into the first chamber 11, achieving a decompression effect without causing light overflow. It is safer to use and can well protect the second light source 4 in the second chamber 12. At the same time, it can evenly distribute the heat and solve the problem of excessive heat concentration damaging the stability of the lamp body 1.

[0030] Combination Figure 1 As shown, the second chamber 12 is located at the lower side of the first chamber 11, and the size of the second chamber 12 is smaller than that of the first chamber 11. That is to say, when the second light source 4 works for a long time and the first light source 3 does not work, the second light source 4 generates a large amount of heat and accumulates in the second chamber 12. At this time, since the second chamber 12 has a relatively small space, the expansion of the hot air inside it will increase the pressure, so that the expanded hot air in the second chamber 12 is quickly released through the louvered exhaust hole 21 to the first chamber 11 with a larger size, achieving a rapid decompression effect without causing light overflow, and is safer to use.

[0031] Combination Figure 2-5 As shown, a plurality of process grooves 22 for increasing strength are formed on one surface of the heat insulation board 2, and correspondingly, a plurality of reinforcing ribs 23 corresponding to the process grooves 22 are formed on the other surface of the heat insulation board 2. The design of the process grooves 22 and the reinforcing ribs 23 can ensure the structural strength of the entire heat insulation board 2, making it less likely to deform, avoiding adverse effects caused by vibration, etc., thereby increasing the service life and improving the heat insulation effect.

[0032] Combination Figure 3 As shown, the louvered exhaust hole 21 is arranged in the middle of the heat insulation board 2 and beside the process groove 22. Since the louvered exhaust hole 21 is arranged in the middle of the heat insulation board 2, it can better transfer heat to the inside of the first chamber 11 through the louvered exhaust hole 21, and the heat is better uniformed.

[0033] The louvered exhaust holes 21 and the process grooves 22 are parallel to each other and perpendicular to the direction of the light path of the vehicle headlights.

[0034] An arc plate 24 is stamped and formed in the middle of the insulation board 2, and the louvered exhaust hole 21 is formed on the inner wall of the arc plate 24. One end of the louvered exhaust hole 21 passes through one surface of the insulation board 2, and the other end of the louvered exhaust hole 21 is a gap formed by the end of the arc plate 24 and the other surface of the insulation board 2, which is parallel to the other surface of the insulation board 2, so that the cross-section of the louvered exhaust hole 21 is arc-shaped.

[0035] Combination Figure 1-5 As shown, the lamp body 1 is provided with a mounting groove 13 for inserting the heat insulation board 2, and the upper and lower inner walls of the mounting groove 13 are provided with positioning grooves; the edges of the upper and lower surfaces of the heat insulation board 2 are stamped with fixing convex buttons 25, and after the outer edge of the heat insulation board 2 is embedded in the mounting groove 13, the fixing convex button 25 is engaged with the positioning groove and can be locked, thereby realizing screw-free fastening assembly, which is more convenient to install. The heat insulation board 2 can be locked by directly inserting it into the mounting groove 13 of the lamp body 1, which is extremely convenient to operate and is also convenient for later disassembly for repair and maintenance.

[0036] The cross section of the fixing knob 25 is arc-shaped, which can facilitate the fixing knob 25 to slide in the installation groove 13 and smoothly enter the positioning groove. At the same time, when disassembling, the fixing knob 25 can also be separated from the positioning groove under a large pulling force, which is convenient for disassembly.

[0037] The edges of the upper and lower surfaces of the heat insulation board 2 are stamped with elastic flanges 26 protruding outward, and the elastic flanges 26 are elastically pressed into contact with the upper and lower inner walls of the mounting groove 13 for positioning, which can further ensure that the heat insulation board 2 is more stably installed in the mounting groove 13 of the lamp body 1, and its assembly structure is more firm and more stable, so that the product quality is higher.

[0038] The elastic flange 26 is triangular in shape, can be easily manufactured and formed, and has better elasticity.

[0039] To sum up, when the first light source 3 works for a short time and the second light source 4 does not work, the heat generated by the first light source 3 will basically not be transferred to the second chamber 12 or will be transferred to the second chamber 12 in small amounts through the louvered exhaust holes 21, that is, it will basically not affect the second light source 4. At the same time, heat insulation is achieved by the heat insulation board 2, so that the heat will not contact with other surfaces of the lamp body 1 except the surface where the first chamber 11 is located, thereby reducing the contact area and reducing the risk of the lamp body 1 melting due to heat; when the second light source 4 works for a short time and the first light source 3 does not work, the above-mentioned technical effects can also be achieved, which will not be elaborated here. The most important thing is that when the second light source 4 works for a long time and the first light source 3 is not working, the second light source 4 generates a large amount of heat and gathers in the second chamber 12. At this time, the hot air in the second chamber 12 expands and increases the pressure. Since the insulation board 2 is formed with louvered exhaust holes 21, the hot air expanded in the second chamber 12 is released into the first chamber 11, achieving a decompression effect without causing light overflow. It is safer to use and can well protect the second light source 4 in the second chamber 12. At the same time, it can evenly distribute the heat and solve the problem of excessive heat concentration damaging the stability of the lamp body 1.

[0040] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A heat shield structure for a vehicle lamp, comprising a heat shield (2) installed in a lamp body (1), characterized in that: The heat insulation board (2) divides the inner cavity of the lamp body (1) into a first chamber (11) and a second chamber (12); the first light source (3) and the second light source (4) installed in the lamp body (1) are respectively placed in the first chamber (11) and the second chamber (12); the heat insulation board (2) is formed with a louvered exhaust hole (21), and the first chamber (11) and the second chamber (12) are connected through the louvered exhaust hole (21), so that the expanded hot air formed by the long-term light emission of the first light source (3) or the second light source (4) is released from the first chamber (11) to the second chamber (12) or from the second chamber (12) to the first chamber (11).

2. The heat shield structure of a vehicle lamp according to claim 1, characterized in that: The second chamber (12) is located at the lower side of the first chamber (11), and the size of the second chamber (12) is smaller than that of the first chamber (11).

3. The heat shield structure of a vehicle lamp according to claim 1, characterized in that: One surface of the heat insulation board (2) is formed with a plurality of process grooves (22) for increasing strength, and correspondingly, the other surface of the heat insulation board (2) is formed with a plurality of reinforcing ribs (23) corresponding to the process grooves (22).

4. The heat shield structure of a vehicle lamp according to claim 3, characterized in that: The louvered exhaust hole (21) is arranged in the middle of the heat insulation board (2) and is located beside the process groove (22).

5. The heat shield structure of a vehicle lamp according to claim 4, characterized in that: The louvered exhaust hole (21) and the process groove (22) are parallel to each other and perpendicular to the direction of the light path of the vehicle headlight.

6. A heat shield structure for a vehicle lamp according to any one of claims 1 to 5, characterized in that: The heat insulation board (2) has an arc-shaped plate (24) formed by stamping in the middle, and the inner wall of the arc-shaped plate (24) has the louver-type exhaust hole (21) formed thereon, one end of the louver-type exhaust hole (21) passes through one surface of the heat insulation board (2), and the other end of the louver-type exhaust hole (21) is a gap formed by the end of the arc-shaped plate (24) and the other surface of the heat insulation board (2), and is parallel to the other surface of the heat insulation board (2), so that the cross section of the louver-type exhaust hole (21) is in the shape of an arc.

7. A heat shield structure for a vehicle lamp according to any one of claims 1 to 5, characterized in that: The lamp body (1) is provided with a mounting groove (13) for inserting the heat insulation board (2), and the upper and lower inner walls of the mounting groove (13) are both provided with positioning grooves; the edges of the upper and lower surfaces of the heat insulation board (2) are both stamped with fixing convex buttons (25), and after the outer edge of the heat insulation board (2) is embedded in the mounting groove (13), the fixing convex button (25) is engaged with the positioning groove for positioning.

8. The heat shield structure of a vehicle lamp according to claim 7, characterized in that: The cross section of the fixing knob (25) is arc-shaped.

9. The heat shield structure of a vehicle lamp according to claim 7, characterized in that: The edges of the upper and lower surfaces of the heat insulation board (2) are both stamped to form elastic flanges (26) protruding outwards, and the elastic flanges (26) are elastically pressed into contact with the upper and lower inner walls of the installation groove (13) for positioning.

10. The heat shield structure of a vehicle lamp according to claim 9, characterized in that: The elastic flange (26) is triangular in shape.

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