A vehicle lamp

Abstract

The present invention provides a vehicle lamp, belonging to the technical field of automotive parts. In the present invention, a circuit board is installed in an installation cavity with an opening on a bottom shell. LED lamps are distributed on the circuit board according to a predetermined rule. A heat dissipation and reflecting bowl is installed in the installation cavity and on the side of the circuit board where the LED lamps are arranged. Then, a lamp cover is installed outside the heat dissipation and reflecting bowl to seal the opening. In addition, the heat dissipation and reflecting bowl is made of a heat dissipation material, and partitions are provided between adjacent bowl cavities of the heat dissipation and reflecting bowl to form heat dissipation fins. At the same time, a reflecting coating is plated on the inner surface of each bowl cavity, so that the heat dissipation and reflecting bowl can not only maintain the reflecting and light-focusing effects of a traditional reflecting bowl, but also quickly conduct heat, quickly export the heat generated during the operation of electronic components in the lamp, ensure the use performance and service life of the LED lamps, and also avoid the problem of having to additionally design other spaces in the lamp body due to the need to additionally provide a heat dissipation structure, thereby reducing the design and manufacturing costs and facilitating the popularization and use of the vehicle lamp.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts, and particularly to a vehicle lamp. Background Art

[0002] As an essential part of a vehicle, vehicle lamps can emit corresponding driving signals, facilitating the drivers and passengers of other vehicles to obtain the driving information of the vehicle in a timely manner, and thus enabling them to take corresponding countermeasures. It is a core structure for enhancing driving safety.

[0003] Currently, for vehicle lamps on the market, especially automotive tail lamps, there are many functional areas, and their own sizes are relatively small. A large number of lamps are arranged and divided into areas within a relatively small lamp housing to achieve the purpose of emitting different signals. However, existing vehicle lamps usually use LED lamps to emit light. The existing LED lamps are installed on a circuit board and reasonably distributed according to design requirements, resulting in a large number of LED lamps being stacked in a lamp housing with limited space. During operation, a large amount of heat is generated by the components inside the lamp body. In addition, the circuit board is directly installed through the mounting posts on the housing. Moreover, a reflector bowl and a lamp cover are provided on one side of the lamp housing where the circuit board is arranged with LED lamps. The bottom of the reflector bowl is provided with a lamp hole. During installation, the LED lamps on the circuit board are located within the lamp hole, and the lamp cover is covered on the reflector bowl, so that when the LED lamps emit light, the light can be reflected by the reflector bowl and emitted through the lamp cover. Since the working temperature of the LED lamps needs to be maintained below 50°C, and with the increasing requirements for the brightness of vehicle lamps and the large number of LED lamps, the heat generated by the operation of the components during use increases significantly. Moreover, in the current structure of vehicle lamps, although the structure that only relies on the circuit board to fit the lamp housing to achieve heat exchange for heat dissipation purposes can achieve a certain heat dissipation effect, for the above-mentioned vehicle lamps, the heat generated during their operation is relatively large, and it is difficult to achieve a good heat dissipation effect only by the method of fitting the circuit board on the lamp housing. Additional heat dissipation accessories need to be added, which leads to an increase in the space design requirements for other parts inside the lamp body, causing a greater impact on the design and manufacture of vehicle lamps, resulting in an increase in the manufacturing cost of vehicle lamps and being unfavorable for the popularization and use of vehicle lamps. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present aim is to provide a vehicle lamp, which is provided with a heat dissipation reflector bowl made of a high heat dissipation material. At the same time, a reflective coating is plated on the inner surface of the bowl of the heat dissipation reflector bowl. It can not only achieve the reflective and condensing effects of a traditional reflector bowl through the reflective coating, but also quickly export the heat generated by the operation of the electronic components in the lamp body through its own high heat dissipation material. Moreover, since there are partitions between adjacent bowl cavities of the heat dissipation reflector bowl, heat dissipation fins are formed through the partitions, increasing the heat dissipation area and realizing efficient heat exchange. Thus, the temperature in the lamp body is effectively reduced, enabling the LED lamp to work in a suitable temperature environment, ensuring the service performance of the vehicle lamp, extending the service life of the vehicle lamp, and without the need to additionally install a heat dissipation structure, maintaining the original structure of the vehicle lamp, without the need to redesign other spaces in the lamp body separately, avoiding the increase in costs such as design and manufacturing, and facilitating the popularization and use of the vehicle lamp.

[0005] The specific technical solution is as follows:

[0006] A vehicle lamp, having the following characteristics, includes:

[0007] A bottom shell, the bottom shell has an installation cavity, and the installation cavity has an opening communicating with the outside;

[0008] A circuit board, the circuit board is arranged in the installation cavity, and several LED lamps are arranged on the side of the circuit board close to the opening according to a predetermined rule;

[0009] A heat dissipation reflector bowl, the heat dissipation reflector bowl is arranged in the installation cavity and on the side of the circuit board where the LED lamps are arranged. Several bowl cavities corresponding to the LED lamps are arranged on the heat dissipation reflector bowl. Partitions are arranged between adjacent bowl cavities to form heat dissipation fins. At the same time, an opening is provided at the bottom of each bowl cavity, and the corresponding LED lamp extends into the opening. Moreover, the heat dissipation reflector bowl is made of a heat dissipation material, and a reflective coating is plated on the inner surface of the bowl of each bowl cavity;

[0010] A lamp cover, the lamp cover is arranged at the opening of the installation cavity and covers the heat dissipation reflector bowl.

[0011] In the above-mentioned vehicle lamp, the heat dissipation reflector bowl is made of aluminum material or copper material.

[0012] In the above-mentioned vehicle lamp, the reflective coating is made of chromium-aluminum alloy material.

[0013] In the above-mentioned vehicle lamp, it further includes several heat conduction strips. Several connecting blocks are arranged at intervals on the outer side wall of the heat dissipation reflector bowl. The several heat conduction strips correspond to the several connecting blocks one by one. Moreover, one end of each heat conduction strip is inserted and connected to the corresponding connecting block. At the same time, several communication holes corresponding to the heat conduction strips one by one are provided on the bottom shell, and the other end of each heat conduction strip extends out of the bottom shell from the corresponding communication hole and surrounds the outer wall of the bottom shell.

[0014] The above-mentioned vehicle lamp, wherein each connecting block is provided with a multi-step socket whose size gradually shrinks as the depth increases. At the same time, the end face of one end of each heat conducting strip is provided with a protruding plug-in block, and the plug-in block is also arranged in a multi-step shape, and the size of the plug-in block gradually shrinks as the protruding distance increases. When the heat conducting strip is plugged into the corresponding connecting block, the plug-in block is inserted into the corresponding multi-step socket.

[0015] The above-mentioned vehicle lamp, wherein reinforcing plates are provided on the inner wall of the bottom shell and at the outer peripheral part of each communication hole. At the same time, a sealing groove is opened on the inner side wall of the reinforcing plate, a sealing ring is arranged in the sealing groove, and when the heat conducting strip passes through the communication hole, the sealing ring is sleeved on the corresponding heat conducting strip.

[0016] The above-mentioned vehicle lamp, which further includes a breathing window. The breathing window is arranged on the lamp cover. A breathing port is opened on the lamp cover. The outer edge and the inner edge of the breathing port are respectively provided with an outer blocking edge and an inner blocking edge that both extend towards the inside of the breathing port. The breathing window further includes a covering plate and a heat-deformable member. The covering plate is arranged between the outer blocking edge and the inner blocking edge. And the interval between the outer blocking edge and the inner blocking edge is greater than the thickness of the covering plate. The upper end of the covering plate is hinged to the breathing port. At the same time, the heat-deformable member is arranged on the inner blocking edge and at the position of the upper end of the covering plate. And when the heat-deformable member deforms due to heat, one end of the heat-deformable member pushes against the upper end of the covering plate and is below the hinged part.

[0017] The above-mentioned vehicle lamp, wherein a waterproof and breathable film is arranged on the inner side of the inner blocking edge of the breathing port, and the waterproof and breathable film seals the breathing port.

[0018] The above-mentioned vehicle lamp, wherein the heat-deformable member is a thermostatic bimetal sheet. A through hole is opened on the inner blocking edge. One end of the heat-deformable member extends into the installation cavity from the through hole, and the other end extends towards the upper end of the covering plate and there is an interval between them. And when the ambient temperature where the heat-deformable member is located is greater than or equal to 45 °C, the other end of the heat-deformable member contacts the upper end of the covering plate.

[0019] The above-mentioned vehicle lamp, wherein an avoidance groove is opened on the inner blocking edge corresponding to the upper end of the covering plate. A rotating shaft is arranged at the upper end of the covering plate, and the rotating shaft is located in the avoidance groove.

[0020] The positive effects of the above technical solutions are:

[0021] The above-mentioned vehicle lamp is made by using a highly heat-dissipating material for the reflector bowl of the vehicle lamp and plating a reflective coating on the inner wall of its bowl cavity to form a heat-dissipating and reflective bowl. Moreover, heat-dissipating fins are formed by the partitions between adjacent bowl cavities. It can not only have the reflective and light-condensing effects demonstrated by the traditional reflector bowl through the bowl cavity and the reflective coating, maintaining the characteristics of the vehicle lamp itself, but also quickly conduct the heat generated by the components through the heat-dissipating and reflective bowl. At the same time, heat exchange is quickly achieved through the heat-dissipating fins formed by the partitions between adjacent bowl cavities, thereby improving the heat exchange efficiency, reducing the temperature inside the vehicle lamp, ensuring that the LED lamp can work in a suitable temperature environment, ensuring the service performance of the vehicle lamp, extending the service life of the vehicle lamp, avoiding the problem of having to redesign other spaces inside the lamp body due to the need to additionally install a heat-dissipating structure, reducing the design and manufacturing costs, and facilitating the popularization and use of the vehicle lamp. Brief Description of the Drawings

[0022] Figure 1 It is a structural diagram of an embodiment of a vehicle lamp of the present invention;

[0023] Figure 2 It is a structural diagram of a heat-dissipating and reflective bowl of a vehicle lamp of the present invention;

[0024] Figure 3 It is another structural diagram of a heat-dissipating and reflective bowl of a vehicle lamp of the present invention;

[0025] Figure 4 It is a structural diagram of a vehicle lamp of the present invention after adopting another heat-dissipating and reflective bowl;

[0026] Figure 5 It is a structural diagram of a lamp cover with a breathing window of a vehicle lamp of the present invention;

[0027] Figure 6 It is a cross-sectional view of a lamp cover with a breathing window of a vehicle lamp of the present invention.

[0028] In the drawings: 1, bottom case; 11, installation cavity; 2, circuit board; 21, LED lamp; 3, heat-dissipating and reflective bowl; 31, bowl cavity; 32, opening; 33, connecting block; 331, multi-step socket; 4, lamp cover; 41, breathing window; 42, breathing port; 43, waterproof and breathable film; 411, covering plate; 412, heat-deformable part; 421, outer retaining edge; 422, inner retaining edge; 4111, rotating shaft; 4221, through hole; 4222, avoidance groove; 5, heat-conducting strip. Detailed Description of the Invention

[0029] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 to the attached Figure 6 to specifically elaborate on the technical solutions provided by the present invention, but the following content is not a limitation of the present invention.

[0030] Figure 1 Structural diagram of an embodiment of a vehicle lamp according to the present invention; Figure 2 Structural diagram of a heat dissipation and reflecting bowl of a vehicle lamp according to the present invention. As Figure 1 and Figure 2 shown, the vehicle lamp provided in this embodiment includes: a bottom case 1, a circuit board 2, a heat dissipation and reflecting bowl 3, and a lamp cover 4.

[0031] Specifically, the bottom case 1 is an integrally injection-molded structure. At this time, the bottom case 1 includes an installation cavity 11. At the same time, the installation cavity 11 on the bottom case 1 has an opening communicating with the outside, that is, the installation cavity 11 is an installation cavity 11 with one side open, which facilitates the installation of the circuit board 2 and the heat dissipation and reflecting bowl 3.

[0032] Specifically, the circuit board 2 is arranged in the installation cavity 11. At this time, several LED lights 21 distributed according to a predetermined rule are arranged on one side of the circuit board 2 close to the opening of the installation cavity 11. The circuit board 2 is used as the power supply and control structure for the operation of the LED lights 21 to meet the information display requirements of the vehicle lamp.

[0033] Specifically, the heat dissipation and reflecting bowl 3 is arranged in the installation cavity 11, and the heat dissipation and reflecting bowl 3 is installed on the side of the circuit board 2 where the LED lights 21 are arranged, so that the heat dissipation and reflecting bowl 3 can correspond to the LED lights 21. And, several bowl cavities 31 corresponding to the LED lights 21 are arranged on the heat dissipation and reflecting bowl 3, so that each LED light 21 can have a corresponding bowl cavity 31 for light concentration, ensuring the use performance. In addition, partitions are arranged between adjacent bowl cavities 31. The partitions are used as heat dissipation fins, thereby increasing the heat exchange area of the heat dissipation and reflecting bowl 3 and further improving the heat dissipation effect. At the same time, an opening 32 is opened at the bottom of each bowl cavity 31. During installation, the corresponding LED light 21 is inserted into the opening 32, so that the light-emitting part of each LED light 21 can enter the bowl cavity 31 through the opening 32. And, the heat dissipation and reflecting bowl 3 is made of a heat dissipation material, so that the heat dissipation and reflecting bowl 3 itself has good heat conduction ability, and can quickly export the heat generated when electronic components such as the circuit board 2 and the LED lights 21 work and realize heat exchange to achieve the purpose of rapid heat dissipation. In addition, a reflective coating is plated on the inner surface of each bowl cavity 31. The light-emitting coating enables the cavity walls of each bowl cavity 31 to have the effect of reflecting and concentrating light, so that the heat dissipation and reflecting bowl 3 can not only have the reflective and concentrating effect of a traditional reflecting bowl, but also realize rapid heat conduction and heat dissipation. Without changing the original space structure, the heat dissipation efficiency is improved, the use performance of the vehicle lamp is ensured, and the service life of the vehicle lamp can be extended at the same time. The problem of needing to additionally design a heat dissipation structure and re-design the space inside the lamp body is avoided, the design and manufacturing costs are reduced, and it is beneficial to the popularization and use of the vehicle lamp.

[0034] Specifically, the lamp cover 4 is arranged at the orifice of the installation cavity 11. After the lamp cover 4 is installed in place, the lamp cover 4 can seal the orifice of the installation cavity 11 and cover the heat dissipation and reflection bowl 3. The bottom shell 1 and the lamp cover 4 jointly form a relatively closed housing structure, which can not only meet the light transmission requirements, but also protect the circuit board 2, the LED lamp 21, the heat dissipation and reflection bowl 3 and other structures in the installation cavity 11, and the structural design is more reasonable.

[0035] More specifically, the heat dissipation and reflection bowl 3 is made of aluminum or copper, which can not only meet the requirements of casting or stamping processing, facilitate processing, but also have good heat conduction performance to achieve rapid heat conduction of the heat dissipation and reflection bowl 3.

[0036] More specifically, the reflective coating plated on the inner surface of the bowl cavity 31 of each heat dissipation and reflection bowl 3 is made of chromium-aluminum alloy, which has a smooth mirror surface effect to achieve the best reflective and condensing effect, and at the same time will not hinder the conduction and release of heat, and has a rapid heat dissipation effect.

[0037] Figure 3 It is another structural diagram of the heat dissipation and reflection bowl of a vehicle lamp of the present invention; Figure 4 It is the structural diagram of a vehicle lamp of the present invention after adopting another heat dissipation and reflection bowl. As Figure 3 and Figure 4 shown, the vehicle lamp further includes a plurality of heat conduction strips 5. At this time, a plurality of connecting blocks 33 are also arranged at intervals on the outer side wall of the heat dissipation and reflection bowl 3 to form an external connection structure through the plurality of connecting blocks 33. At the same time, the plurality of heat conduction strips 5 are in one-to-one correspondence with the plurality of connecting blocks 33, so that the heat derived from the heat dissipation and reflection bowl 3 can be transferred to the heat conduction strips 5 through the connecting blocks 33. And one end of each heat conduction strip 5 is inserted and connected to the corresponding connecting block 33, realizing the split and quick-disassembly connection of the heat conduction strip 5 and the connecting block 33, thus facilitating the installation of the heat dissipation and reflection bowl 3 in the installation cavity 11 of the bottom shell 1. At the same time, a plurality of communication holes corresponding to the heat conduction strips 5 are opened on the bottom shell 1, and the other end of each heat conduction strip 5 extends out of the bottom shell 1 from the corresponding communication hole, so that the heat conducted to the heat conduction strips 5 can be directly transferred outside the vehicle lamp and directly exchange heat with external structures such as the vehicle frame and air to realize external heat dissipation and further improve the heat dissipation effect. In addition, the extended end of the heat conduction strip 5 is surrounded on the outer wall of the bottom shell 1, so that the heat conduction strip 5 is arranged around the outer contour of the bottom shell 1, thereby ensuring that the outer surface of the vehicle lamp can maintain a relatively flat state, which is beneficial to the installation of the vehicle lamp.

[0038] More specifically, multi-step sockets 331 with dimensions gradually decreasing with increasing depth are provided on each connecting block 33, so that the inner wall of the multi-step socket 331 can form a surface with multiple bends, increasing the contact area of the inner wall of the multi-step socket 331. At the same time, on the end face of one end of each heat-conducting strip 5, an outwardly protruding plug-in block is provided. Similarly, the plug-in blocks are arranged in a multi-step shape, and the size of the plug-in blocks gradually decreases with the increase of the protruding distance, so that the outer wall of the plug-in blocks can also form a surface with multiple bends, increasing the contact area of the outer surface of the plug-in blocks. When the heat-conducting strip 5 is inserted into the corresponding connecting block 33, the plug-in block is inserted into the corresponding multi-step socket 331, and the outer surface of the plug-in block contacts the inner wall of the multi-step socket 331, realizing maximum surface contact, expanding the heat conduction area, so that when the heat-dissipating and reflecting bowl 3 is conducted out through the connecting block 33, it can be more comprehensively conducted to the heat-conducting strip 5, ensuring the heat dissipation effect. It should be noted that a heat-conducting gel is provided between the plug-in block and the multi-step socket 331, which can fill the assembly gap between the plug-in block and the multi-step socket 331, avoiding the problem that the assembly gap weakens heat conduction and ensuring the heat conduction effect.

[0039] More specifically, on the inner wall of the bottom shell 1 and at the outer peripheral part of each communication hole, a reinforcing plate is provided. By means of the reinforcing plate, the wall thickness of the bottom shell 1 at each communication hole is increased, strengthening the structural strength of the bottom shell 1 at the communication hole. At the same time, on the inner side wall of each reinforcing plate, a sealing groove is provided, and a sealing ring is provided in each sealing groove. When one end of the heat-conducting strip 5 is laterally passed out from the communication hole, the sealing ring can be sleeved on the corresponding heat-conducting strip 5, thereby realizing the sealing of the assembly gap between the heat-conducting strip 5 and the communication hole and achieving waterproof and dustproof.

[0040] Figure 5 Structural diagram of a lamp cover with a breathing window for a vehicle lamp according to the present invention; Figure 6 Cross-sectional view of a lamp cover with a breathing window for a vehicle lamp according to the present invention. As Figure 5 and Figure 6As shown, a breathing window 41 is further provided on the lamp cover 4. At this time, a breathing port 42 is opened on the lamp cover 4, and the breathing window 41 is installed at the breathing port 42, so that rapid ventilation and cooling can be achieved quickly when the temperature is relatively high, and rainwater and the like can be prevented from entering through the breathing window 41 usually. In addition, an outer retaining edge 421 and an inner retaining edge 422 that both extend towards the breathing port 42 are respectively provided at the outer edge and the inner edge of the breathing port 42. At this time, a gap is provided between the outer retaining edge 421 and the inner retaining edge 422, providing space for the subsequent arrangement and flipping of the covering plate 411. In addition, the breathing window 41 further includes a covering plate 411 and a heat-deformable member 412. During installation, the covering plate 411 is arranged between the outer retaining edge 421 and the inner retaining edge 422, and it is set that the gap between the outer retaining edge 421 and the inner retaining edge 422 is greater than the thickness of the covering plate 411, so that the covering plate 411 can be flipped in the space between the outer retaining edge 421 and the inner retaining edge 422 in the later stage, thereby realizing the opening or closing of the breathing port 42, providing conditions for closing under normal temperature and opening at high temperature in the future. In addition, the upper end of the covering plate 411 is hinged to the breathing port 42, so that the covering plate 411 can be flipped relative to the breathing. Since the flipped covering plate 411 will be inclined, gaps will appear between the covering plate 411 and the inner retaining edge 422 and the outer retaining edge 421, so that the heat inside the lamp can be quickly dissipated, further improving the heat dissipation effect and maintaining the normal operating temperature of the LED lamp 21. At the same time, the heat-deformable member 412 is arranged on the inner retaining edge 422 and at the position above the upper end of the covering plate 411, providing conditions for the subsequent heat-deformable member 412 to act on the covering plate 411. And during the subsequent use process, if the heat-deformable member 412 deforms due to heat, it is set that one end of the heat-deformable member 412 pushes against the upper end of the covering plate 411, and the pushing position of the heat-deformable member 412 on the covering plate 411 is below the hinged part, so that the heat-deformable member 412 can push the covering plate 411 to flip, thereby realizing the opening of the breathing port 42 to meet the rapid heat dissipation requirement. It should be noted that after the temperature inside the lamp decreases, the heat-deformable member 412 returns to its original state, releasing the pushing effect on the covering plate 411, so that the covering plate 411 can be reset, thereby closing the breathing port 42 and realizing the protection of the internal structure of the vehicle lamp. In addition, the width of the inner retaining edge 422 is greater than the width of the outer retaining edge 421, so that the bottom top surface of the outer retaining edge 421 is lower than the bottom top surface of the inner retaining edge 422, so that rainwater and the like that accidentally enter between the inner retaining edge 422 and the outer retaining edge 421 can be blocked by the inner retaining edge 422, and the safety protection is better. Preferably, a torsion spring is further provided on the covering plate 411, and both ends of the torsion spring are respectively connected to the covering plate 411 and the inner wall of the breathing port 42, so that when the heat-deformable member 412 does not push the covering plate 411, the covering plate 411 can be automatically reset under the action of the torsion spring and pressed tightly on the breathing port 42. At the same time, a pre-tightening force for the covering plate 411 to cover the breathing port 42 is provided, which is more convenient to use and has better protection performance.

[0041] More specifically, a waterproof breathable membrane 43 is also provided on the inner side of the inner baffle 422 of the breathing port 42. At this time, the breathing port 42 is sealed by the waterproof breathable membrane 43, so that gas can pass through the waterproof breathable membrane 43 to enter and exit the breathing port 42, while water cannot enter the installation cavity 11 from the breathing port 42, so that during driving, even if the external environment is rainy, water vapor isolation can be achieved through the waterproof breathable membrane 43, ensuring that heat can be dissipated through the breathing window 41 even on rainy days, and maintaining safety during heat dissipation. It is worth pointing out that there are many types of waterproof breathable membranes 43 on the market, which are mature products. In this embodiment, they can be selected as needed. Therefore, the specific structure of the waterproof breathable membrane 43 is not repeated here.

[0042] More specifically, the heat-deformed member 412 used to push the cover plate 411 is a thermal bimetallic strip, that is, when the temperature rises, the heat-deformed member 412 will bend toward one side, providing conditions for the subsequent push of the cover plate 411 to flip. In addition, a through hole 4221 is opened on the inner edge 422, and at the same time, one end of the heat-deformed member 412 is extended from the through hole 4221 into the installation cavity 11, so that the heat-deformed member 412 can be directly in the area with higher heat generation through the through hole 4221, and directly feel the temperature change in the lamp. In addition, the other end of the heat-sensitive deformable member 412 is extended toward the upper end of the cover plate 411. At the same time, a gap is provided between the heat-sensitive deformable member 412 and the cover plate 411. In addition, the heat-sensitive deformable member 412 is set so that the other end of the heat-sensitive deformable member 412 will contact the upper end of the cover plate 411 only when the ambient temperature of the environment in which the heat-sensitive deformable member 412 is located is greater than or equal to 45°C, that is, the gap between the heat-sensitive deformable member 412 and the cover plate 411 is used as a buffer gap. Since the heat-sensitive deformable member 412 will deform after the temperature changes, therefore, when the temperature inside the lamp is within a normal range, in order to avoid the problem of the heat-sensitive deformable member 412 opening the cover plate 411, the gap between the heat-sensitive deformable member 412 and the cover plate 411 can provide an avoidance space for the deformation of the heat-sensitive deformable member 412 at normal temperature, thereby avoiding the problem of the breathing window 41 opening when the headlight is running, and the structural design is more reasonable.

[0043] More specifically, an avoidance groove 4222 is further provided on the inner guard edge 422. At this time, the avoidance groove 4222 is located at a position corresponding to the upper end of the cover plate 411. At the same time, a rotating shaft 4111 is provided at the upper end of the cover plate 411. During installation, the rotating shaft 4111 is installed in the avoidance groove 4222, thereby achieving stable installation of the cover plate 411 at the inner guard edge 422 and maintaining the rotation of the cover plate 411, so that the cover plate 411 can be normally attached to the inner guard edge 422 to seal the breathing port 42, and the structural design is more reasonable.

[0044] The vehicle lamp provided in this embodiment includes a bottom shell 1, a circuit board 2, a heat dissipation and reflective bowl 3, and a lamp cover 4. The circuit board 2 is installed in the installation cavity 11 with a cavity opening on the bottom shell 1. The LED lights 21 are distributed on the circuit board 2 according to a predetermined rule. The heat dissipation and reflective bowl 3 is installed in the installation cavity 11 and on the side of the circuit board 2 where the LED lights 21 are arranged. Then, the lamp cover 4 is installed outside the heat dissipation and reflective bowl 3 to seal the cavity opening. In addition, the heat dissipation and reflective bowl 3 is made of a heat dissipation material, and partitions are provided between adjacent bowl cavities 31 of the heat dissipation and reflective bowl 3 to form heat dissipation fins. At the same time, a reflective coating is plated on the inner surface of each bowl cavity 31. This enables the heat dissipation and reflective bowl 3 to not only maintain the reflective and light-focusing effect of a traditional reflective bowl but also quickly conduct heat, rapidly export the heat generated when the electronic components in the lamp operate, achieve rapid heat exchange, effectively avoid the problem that the temperature inside the lamp is too high and affects the service performance and lifespan of the LED lights 21, and also avoid the problem of having to redesign other spaces inside the lamp body when additionally installing a heat dissipation structure, thereby reducing the design and manufacturing costs and facilitating the popularization and use of the vehicle lamp.

[0045] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle lamp, characterized in that, Comprising: A bottom shell, the bottom shell having an installation cavity, and the installation cavity having an orifice communicating with the outside; A circuit board, the circuit board being disposed in the installation cavity, and a plurality of LED lights arranged in a predetermined regular distribution being disposed on a side of the circuit board close to the orifice; A heat dissipation reflecting bowl, the heat dissipation reflecting bowl being disposed in the installation cavity and on a side of the circuit board where the LED lights are disposed, a plurality of bowl cavities corresponding to the LED lights being disposed on the heat dissipation reflecting bowl, a partition being disposed between adjacent two of the bowl cavities to form heat dissipation fins, and at the same time, an opening being formed at the bottom of each of the bowl cavities, and the corresponding LED light extending into the opening, and the heat dissipation reflecting bowl being made of a heat dissipation material, and a reflective coating being plated on an inner surface of each of the bowl cavities; A lamp cover, the lamp cover being disposed at the orifice of the installation cavity and covering the heat dissipation reflecting bowl; Further comprising a breathing window, the breathing window being disposed on the lamp cover, a breathing port being formed in the lamp cover, an outer blocking edge and an inner blocking edge both extending towards the inside of the breathing port being respectively disposed on an outer edge and an inner edge of the breathing port, the breathing window further comprising a shielding plate and a heat deformation member, the shielding plate being disposed between the outer blocking edge and the inner blocking edge, and a space between the outer blocking edge and the inner blocking edge being greater than a thickness of the shielding plate, an upper end of the shielding plate being hinged to the breathing port, and at the same time, the heat deformation member being disposed on the inner blocking edge and at a position of an upper end of the shielding plate, and when the heat deformation member is deformed due to heat, one end of the heat deformation member pushes against the upper end of the shielding plate and is below the hinged portion.

2. The vehicle lamp according to claim 1, characterized in that, The heat dissipation reflecting bowl is made of aluminum or copper.

3. The vehicle lamp according to claim 1, characterized in that, The reflective coating is made of a chromium-aluminum alloy material.

4. The vehicle lamp according to claim 1, characterized in that, Further comprising a plurality of heat conducting strips, a plurality of connecting blocks being spaced apart on an outer side wall of the heat dissipation reflecting bowl, the plurality of heat conducting strips corresponding to the plurality of connecting blocks one by one, and one end of each of the heat conducting strips being plugged and connected to the corresponding connecting block, and at the same time, a plurality of communication holes corresponding to the heat conducting strips one by one being formed in the bottom shell, and the other end of each of the heat conducting strips extending out of the bottom shell from the corresponding communication hole and surrounding an outer wall of the bottom shell.

5. The vehicle lamp according to claim 4, characterized in that, Each of the connecting blocks is provided with a multi-step socket whose size gradually decreases as the depth increases, and at the same time, an outer protruding plugging block is disposed on an end face of one end of each of the heat conducting strips, and the plugging block is also arranged in a multi-step manner, and the size of the plugging block gradually decreases as the protruding distance increases, and when the heat conducting strip is plugged and connected to the corresponding connecting block, the plugging block is inserted into the corresponding multi-step socket.

6. The vehicle lamp according to claim 5, characterized in that, Reinforcing plates are disposed on an inner wall of the bottom shell and at an outer peripheral portion of each of the communication holes, and at the same time, a sealing groove is formed in an inner side wall of the reinforcing plate, a sealing ring is disposed in the sealing groove, and when the heat conducting strip passes through the communication hole, the sealing ring is sleeved on the corresponding heat conducting strip.

7. The vehicle lamp according to claim 1, characterized in that, A waterproof breathable film is disposed on an inner side of the inner blocking edge of the breathing port, and the waterproof breathable film seals the breathing port.

8. The vehicle lamp according to claim 1, characterized in that, The heat-deformable part is a bimetallic strip. A perforation is formed in the inner retaining edge. One end of the heat-deformable part extends into the installation cavity through the perforation, and the other end extends towards the upper end of the cover plate with a gap therebetween. When the ambient temperature where the heat-deformable part is located is greater than or equal to 45 °C, the other end of the heat-deformable part contacts the upper end of the cover plate.

9. The vehicle lamp according to claim 1, wherein An avoidance groove is formed in the inner retaining edge corresponding to the upper end of the cover plate. A rotating shaft is provided at the upper end of the cover plate, and the rotating shaft is located in the avoidance groove.

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