Lamp for vehicle
By designing light source components and radiators including circuit boards, light emitting units, light guides, bottom plates, heat dissipation parts and side plates in vehicle lamps, combined with the structure of the mounting bracket, the problem of poor heat dissipation in vehicle lamps is solved, and efficient heat dissipation and space saving effects are achieved.
Patent Information
- Application Number
- CN202421671929.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In vehicle lamps, due to space limitations, the heat generated by LEDs is difficult to effectively disperse, resulting in the failure of the LEDs or the service life is reduced.
A vehicle lamp is designed, including a light source assembly, a radiator and a mounting bracket. The light source assembly consists of a circuit board, a light emitting unit and a light guide. The radiator includes a bottom plate, a heat dissipation part and a side plate. The light source assembly and the radiator are fixed together by mounting brackets, and the heat dissipation efficiency is improved by using the design of the radiator.
This design can effectively dissipate heat generated by LEDs, extend the service life of LEDs, and save space due to the compact structure.
Smart Images
Figure CN222836722U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle lighting, in particular to a lamp for a vehicle. Background Art
[0002] The lamps on vehicles usually use multiple high-power LEDs, which are assembled together as the light source of the lamps. In some vehicles, the size and shape of the lamps must meet the requirements of miniaturization, so the light energy that is not dissipated in time in the lamps is converted into heat energy. Due to the size of the lamps, this heat is gathered together, which will cause the LED to fail or reduce the service life of the lamps. At present, heat sinks made of thermal conductive materials are generally used to directly contact the LEDs to dissipate heat. However, due to the size of the lamps, the effective heat dissipation area of the heat sink is limited, which affects its heat dissipation effect. Utility Model Content
[0003] The utility model aims to provide a vehicle lamp which can save space and has high heat dissipation performance.
[0004] To achieve the above-mentioned purpose, the utility model proposes a vehicle lamp, comprising a light source assembly, a heat sink for dissipating heat generated by the light source assembly, and a mounting bracket connecting the light source assembly and the heat sink; the light source assembly comprises a circuit board connected to the heat sink, a light-emitting unit mounted on the circuit board, and a light guide mounted on the mounting bracket for guiding the propagation direction of light.
[0005] Furthermore, the heat sink includes a base plate for transferring heat from the light source assembly, a heat dissipation portion connected to the base plate for dissipating heat from the light source assembly, and a side plate disposed on a side of the base plate away from the heat dissipation portion for abutting against the mounting bracket.
[0006] Optionally, a radiator limiting block is provided on the bottom plate, a circuit board limiting groove is opened on the circuit board, and the radiator limiting block is passed through the circuit board limiting groove to limit the relative position of the circuit board and the radiator.
[0007] Furthermore, the vehicle lamp also includes a connector electrically connected to the circuit board, and a connector mounting plate detachably mounted on the mounting bracket, and the connector is fixed to the connector mounting plate.
[0008] Optionally, after one end of the circuit board is bent toward the direction close to the connector mounting plate, it continues to bend toward the middle of the circuit board in a direction parallel to the connector mounting plate, so that it partially fits on the connector mounting plate and is electrically connected to the connector.
[0009] Optionally, a light guide abutting column is provided on the light guide, and the circuit board is clamped between the light guide abutting column and the bottom plate.
[0010] Furthermore, the light guide comprises a light guide shell for guiding the propagation direction of the light, a light-transmitting shell for allowing the light to pass through, and a light guide installation plate connecting the light guide shell and the light-transmitting shell.
[0011] Optionally, a light guide stop strip is provided on the light guide, a bracket limiting groove is provided on the mounting bracket, and the light guide stop strip passes through the bracket limiting groove to limit the relative position of the light guide and the mounting bracket.
[0012] Optionally, the base plate and the mounting bracket are respectively provided with a connected radiator mounting sleeve and a first mounting sleeve for allowing a fastener to pass through, so as to fix the radiator to the mounting bracket; the mounting bracket is also provided with a bracket positioning column and a bracket stop strip passing through the light guide, so as to limit the relative position of the light guide and the mounting bracket.
[0013] Furthermore, the vehicle lamp also includes a lamp housing mounted on the vehicle body and a lampshade detachably connected to the lamp housing, the mounting bracket is mounted in the lamp housing, and the light source assembly is located between the radiator and the lampshade.
[0014] Compared with the prior art, the technical solution of the utility model has the following beneficial effects: the vehicle lamp of the utility model can save space and has higher heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is an exploded view of the overall structure of the vehicle lamp of the present utility model.
[0017] Figure 2 It is an exploded view of a light source assembly, a heat sink and a mounting bracket in one embodiment of the utility model.
[0018] Figure 3 for Figure 2 Exploded view from another angle.
[0019] Figure 4 for Figure 2 Installation diagram of the .
[0020] Figure 5 for Figure 4 Installation diagram from another perspective.
[0021] In the figure:
[0022] 1-light source assembly; 11-circuit board; 111-light emitting unit; 112-circuit board limiting groove; 12-light guide; 121-light guide shell; 122-light-transmitting shell; 123-light guide mounting plate; 124-light guide abutment column; 125-light guide stop bar; 126-first light guide connection hole; 127-second light guide connection hole;
[0023] 2- radiator; 21- bottom plate; 211- radiator stopper; 212- radiator mounting sleeve; 213- circuit board positioning column; 22- heat dissipation part; 221- support plate; 222- heat dissipation plate; 23- side plate;
[0024] 3-mounting bracket; 31-first mounting sleeve; 32-second mounting sleeve; 33-bracket limiting groove; 34-bracket positioning column; 35-bracket stop strip; 36-support plate; 36a-first mounting portion; 36b-second mounting portion; 37-bracket connecting hole;
[0025] 4-connector; 5-connector mounting plate; 6-mounting pad; 71-lamp housing; 72-lamp cover; 73-sealing strip. DETAILED DESCRIPTION
[0026] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] The orientation or position relationship indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of description and simplified description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the utility model.
[0028] The terms "first", "second", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.
[0029] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.
[0030] See also Figure 1 The utility model provides a vehicle lamp, including a lamp housing 71, a lamp shade 72 and a light source assembly 1. The lamp housing 71 is mounted on a vehicle body, the lamp shade 72 is detachably connected to the lamp housing 71, the light source assembly 1 is embedded in the lamp housing 71, and a sealing strip 73 is provided between the lamp shade 72 and the lamp housing 71. In some examples, the lamp shade 72 can be detachably mounted on the lamp housing 71 by means of a snap connection or a fastener connection, so as to facilitate installation and maintenance.
[0031] The vehicle lamp of the present invention further includes a mounting bracket 3 and a radiator 2. The light source assembly 1 and the radiator 2 are both mounted on the mounting bracket 3 and fixed to the lamp housing 71 through the mounting bracket 3. The radiator 2 is used to dissipate the heat generated by the light source assembly 1. The light source assembly 1 is located between the radiator 2 and the lampshade 72.
[0032] See also Figure 2 The light source assembly 1 of the utility model includes a circuit board 11 and a light guide 12, and the light guide 12 is used to guide the propagation direction of light. A light-emitting unit 111 is installed on the circuit board 11. Optionally, the light-emitting unit 111 is an LED. The number of the light-emitting units 111 can be one or more. In one example, multiple light-emitting units 111 are evenly arranged on the circuit board 11 to improve the brightness or achieve different lighting effects. In some examples, the light source assembly 1 includes multiple groups of light-emitting units 111 for achieving various lighting effects such as constant light and flashing.
[0033] See also Figure 2 and Figure 3 , the light guide 12 includes a light guide shell 121 for guiding the propagation direction of light, a light-transmitting shell 122 for light to pass through, and a light guide mounting plate 123 connecting the light guide shell 121 and the light-transmitting shell 122. In one example, the light-transmitting shell 122 is a columnar shape such as a prism or a cylinder and is embedded in the light guide mounting plate 123, the light guide shell 121 and the light guide mounting plate 123 are integrally formed, and the light guide shell 121 and the light-transmitting shell 122 are optically connected, and a through hole for light to pass through is opened at one end of the light guide shell 121 close to the light-emitting unit 111. Optionally, the light guide 12 includes a plurality of groups of light guides 12 that cooperate with a plurality of groups of light-emitting units 111 to propagate light.
[0034] The heat sink 2 of the utility model includes a bottom plate 21 for transferring heat from the light source assembly 1, and a heat dissipation portion 22 connected to the bottom plate 21 for dissipating the heat of the light source assembly 1. Optionally, the heat sink 2 also includes a side plate 23 disposed on the side of the bottom plate 21 away from the heat dissipation portion 22 for abutting against the mounting bracket 3 to further improve the installation stability. In some examples, the bottom plate 21 is stepped, that is, a plurality of support plates 221 are arranged at intervals in a direction parallel to the axial direction of the light guide shell 121, so as to be suitable for different vehicle body contours or lamp shapes such as through-lights. Optionally, the plurality of support plates 221 are parallel to each other to facilitate installation.
[0035] In one example, the surface of the bottom plate 21 away from the light-emitting unit 111 extends vertically outward to form a heat dissipation portion 22. In another example, the heat dissipation portion 22 is fixed to the bottom plate 21 by means of clamping, fasteners or adhesives. The heat dissipation portion 22 can be plate-shaped, needle-shaped or special-shaped. In some examples, the heat dissipation portion 22 is composed of a plurality of heat dissipation plates 222 arranged at intervals, which can increase the heat dissipation area and thus improve the heat dissipation performance.
[0036] In some examples, the circuit board 11 is arranged close to the bottom plate 21, and a heat sink stopper 211 is arranged on the surface of the bottom plate 21 away from the heat dissipation part 22. A circuit board stopper groove 112 is provided on the circuit board 11, and the heat sink stopper 211 is inserted into the circuit board stopper groove 112 to limit the relative position of the circuit board 11 and the heat sink 2. The heat dissipation effect can be improved by direct contact between the circuit board 11 and the bottom plate 21 of the heat sink 2. Optionally, the circuit board 11 is a flexible circuit board, so as to achieve the effects of being thin and bendable, further save space, and facilitate adaptation to the shape of the lamp or the structure of the heat sink 2.
[0037] Preferably, a mounting pad 6 is sandwiched between the circuit board 11 and the bottom plate 21 to improve the installation stability between the circuit board 11 and the bottom plate 21. In addition, the mounting pad 6 can be made of a flexible material such as rubber, and the circuit board 11 is abutted against the bottom plate 21 of the radiator 2 through the mounting pad 6, thereby improving the installation stability. In some examples, a circuit board positioning column 213 is further provided on the surface of the bottom plate 21 away from the heat dissipation portion 22, and the circuit board positioning column 213 is sequentially penetrated in the mounting pad 6 and the circuit board 11, further improving the installation reliability. Optionally, a light guide abutting column 124 is provided on the light guide 12, and the circuit board 11 is sandwiched between the light guide abutting column 124 and the bottom plate 21.
[0038] The heat sink 2 can be fixed to the mounting bracket 3 by fasteners in the prior art. In some examples, the bottom plate 21 and the mounting bracket 3 are respectively provided with a heat sink mounting sleeve 212 and a first mounting sleeve 31 for fasteners to pass through, so as to fix the heat sink 2 to the mounting bracket 3 and improve the connection reliability. The heat sink 2 can be made of aluminum. Preferably, the heat sink 2 is made of superconducting carbon alloy injection molding, so as to improve the heat dissipation performance while reducing the weight to achieve the lightweight design requirements, and does not require drilling, cutting, anodizing and other processes to avoid pollution. In addition, the installation of the heat sink 2 can be realized by the heat sink mounting sleeve 212, which can simplify the process and reduce the cost.
[0039] Please refer to Figure 3 and Figure 4 The vehicle lamp of the present utility model further includes a connector 4 electrically connected to the circuit board 11, and a connector mounting plate 5 detachably mounted on the mounting bracket 3, and the connector 4 is fixed to the connector mounting plate 5. In some examples, the connector mounting plate 5 and the mounting bracket 3 are integrally formed, and in other examples, the connector mounting plate 5 and the mounting bracket 3 are detachably connected, so as to facilitate adjustment of the installation position of the connector 4 in the lamp housing 71, so as to be applicable to lamps of different models, different functions and different shapes.
[0040] In some examples, the vehicle lamp of the utility model is a through-type taillight, the circuit board 11 is in the shape of a long strip, and the bottom plate 21 is in the shape of a long strip that matches the shape of the circuit board 11. Preferably, the length of the circuit board 11 is not less than the length of the bottom plate 21 of the radiator 2, and after one end of the circuit board 11 is bent toward the direction close to the connector mounting plate 5, it continues to bend toward the middle of the circuit board 11 in a direction parallel to the connector mounting plate 5, so that it is partially attached to the connector mounting plate 5 and electrically connected to the connector 4. In one example, the connector mounting plate 5 is located on the mounting bracket 3 near the radiator 2, thereby shortening the length of the circuit board 11, reducing costs and saving space.
[0041] like Figure 2 and Figure 3 As shown, in some examples, a second mounting sleeve 32 is provided on the mounting bracket 3, a first light guide connecting hole 126 is provided on the light guide 12, and the second mounting sleeve 32 is communicated with the first light guide connecting hole 126, so that the light guide 12 is fixed to the mounting bracket 3 by fasteners.
[0042] Preferably, a light guide stopper strip 125 is provided on the light guide 12 , a bracket limiting groove 33 is provided on the mounting bracket 3 , and the light guide stopper strip 125 passes through the bracket limiting groove 33 to limit the relative position of the light guide 12 and the mounting bracket 3 .
[0043] Preferably, the mounting bracket 3 includes a support plate 36 and a first mounting portion 36a and a second mounting portion 36b provided on two opposite surfaces of the support plate 36. In some examples, the surface of the support plate 36 close to the light guide stop strip 125 vertically protrudes outward to form the first mounting portion 36a, and the support plate 36 is recessed from the surface opposite to the first mounting portion 36a to form the second mounting portion 36b, and the projections of the first mounting portion 36a and the second mounting portion 36b in the direction perpendicular to the support plate 36 at least partially overlap. The bracket limiting groove 33 is provided on the first mounting portion 36a, and the second mounting portion 36b is provided with a bracket connecting hole 37 for a fastener to pass through, and the light guide 12 is provided with a second light guide connecting hole 127, thereby further improving the installation accuracy.
[0044] Optionally, the mounting bracket 3 is further provided with a bracket positioning column 34 and a bracket stop strip 35 which are passed through the light guide 12, and are used to limit the relative position of the light guide 12 and the mounting bracket 3. The bracket positioning column 34 and the bracket stop strip 35 are both passed through the light guide mounting plate 123, which facilitates installation and improves installation accuracy. By ensuring the relative position between the light guide 12 and the circuit board 11, light can be accurately propagated along the light guide 12, thereby improving the lighting effect and reducing heat accumulation, thereby further improving the heat dissipation effect.
[0045] The above are only specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. A vehicle lamp, characterized in that: The invention comprises a light source assembly (1), a heat sink (2) for dissipating heat generated by the light source assembly (1), and a mounting bracket (3) connecting the light source assembly (1) and the heat sink (2); the light source assembly (1) comprises a circuit board (11) connected to the heat sink (2), a light emitting unit (111) mounted on the circuit board (11), and a light guide (12) mounted on the mounting bracket (3) for guiding the propagation direction of light.
2. The vehicle lamp according to claim 1, characterized in that: The heat sink (2) comprises a bottom plate (21) for transferring heat from the light source assembly (1), a heat dissipation portion (22) connected to the bottom plate (21) for dissipating heat from the light source assembly (1), and a side plate (23) provided on a side of the bottom plate (21) away from the heat dissipation portion (22) for abutting against the mounting bracket (3).
3. The vehicle lamp according to claim 2, characterized in that: A radiator limiting block (211) is provided on the bottom plate (21), a circuit board limiting groove (112) is provided on the circuit board (11), and the radiator limiting block (211) is inserted into the circuit board limiting groove (112) to limit the relative position of the circuit board (11) and the radiator (2).
4. The vehicle lamp according to claim 2, characterized in that: It also includes a connector (4) electrically connected to the circuit board (11), and a connector mounting plate (5) detachably mounted on the mounting bracket (3), wherein the connector (4) is fixed to the connector mounting plate (5).
5. The vehicle lamp according to claim 4, characterized in that: After one end of the circuit board (11) is bent toward the direction close to the connector mounting plate (5), it continues to bend toward the middle of the circuit board (11) in a direction parallel to the connector mounting plate (5), partially affixed to the connector mounting plate (5) and electrically connected to the connector (4).
6. The vehicle lamp according to claim 2, characterized in that: A light guide member abutting column (124) is provided on the light guide member (12), and the circuit board (11) is sandwiched between the light guide member abutting column (124) and the bottom plate (21).
7. The vehicle lamp according to any one of claims 1 to 6, characterized in that: The light guide (12) comprises a light guide shell (121) for guiding the propagation direction of light, a light-transmitting shell (122) for allowing light to pass through, and a light guide installation plate (123) connecting the light guide shell (121) and the light-transmitting shell (122).
8. The vehicle lamp according to claim 7, characterized in that: The light guide member (12) is provided with a light guide member stop strip (125), the mounting bracket (3) is provided with a bracket limit groove (33), and the light guide member stop strip (125) is inserted into the bracket limit groove (33) to limit the relative position of the light guide member (12) and the mounting bracket (3).
9. The vehicle lamp according to claim 2, characterized in that: The base plate (21) and the mounting bracket (3) are respectively provided with a radiator mounting sleeve (212) and a first mounting sleeve (31) which are connected to each other and are used for fasteners to pass through, so as to fix the radiator (2) to the mounting bracket (3); the mounting bracket (3) is also provided with a bracket positioning column (34) and a bracket stop strip (35) which are inserted into the light guide (12) and are used to limit the relative position of the light guide (12) and the mounting bracket (3).
10. The vehicle lamp according to claim 1, characterized in that: It also comprises a lamp housing (71) mounted on the vehicle body and a lamp shade (72) detachably connected to the lamp housing (71); the mounting bracket (3) is mounted in the lamp housing (71); and the light source assembly (1) is located between the heat sink (2) and the lamp shade (72).