Electric vehicle lamp sealing structure

Abstract

The utility model discloses an electric vehicle lamp sealing structure which comprises a light-gathering cover, a light-transmitting cover and an end cover, the light-transmitting cover is installed on the front side of the light-gathering cover and fixed through the end cover, a closed first cavity is defined by the light-transmitting cover and the light-gathering cover, and a first sealing ring is further installed between the light-transmitting cover and the light-gathering cover. A mounting groove recessed towards the first cavity is formed in the end, away from the light transmitting cover, of the light gathering cover, a lamp bead and a circuit board are arranged in the mounting groove, a lamp bead mounting hole communicated with the first cavity is formed in the side wall of the mounting groove, the lamp bead penetrates through the lamp bead mounting hole and extends into the first cavity, and a positioning plate of the lamp bead abuts against the side wall of the mounting groove. A third sealing ring is arranged between the positioning plate of the lamp bead and the side wall of the mounting groove, the sealing cover is used for packaging the circuit board and the lamp bead in the mounting groove, the circuit board and the lamp bead are sealed in the mounting groove through the sealing cover, external water vapor can be prevented from making contact with the circuit board, the safety performance of the automobile lamp is improved, and the risk of short circuit of the circuit board is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle lamps, in particular to a sealing structure of an electric vehicle lamp. Background Art

[0002] With the rapid development of science and technology, in order to facilitate people's travel, various types of electric vehicles have appeared on the market and have become people's means of transportation.

[0003] As an inexpensive means of transportation, the design of electric vehicle lights is not as sophisticated as that of car lights.

[0004] Electric car lights Figure 1 As shown, it generally includes a lamp housing 1, a condenser 2, a translucent cover and an end cover 4, wherein the condenser 2 is installed on the inner side of the lamp housing 1 and surrounds a second chamber 102, the translucent cover 3 is blocked on the front side of the condenser 2 and is connected to the lamp housing 1 by the end cover 4, thereby achieving the fixation of the translucent cover 3. At this time, the translucent cover 3 and the condenser 2 form a first inner cavity 101, the lamp bead 6 extends from the second chamber 102 to the inside of the first chamber 101, the circuit board 7 is installed in the second chamber 102, and the external circuit enters the second chamber 102 through the hole on the lamp housing 1 and is connected to the circuit board 7.

[0005] On rainy days, water from the outside can easily enter the first chamber 101 through the gap between the end cover 4 and the light-transmitting cover 3 and the gap between the light-transmitting cover 3 and the focusing cover 2. At the same time, rainwater can also enter the second chamber 102 through the holes on the lamp housing 1, which can easily make the lamp beads 6 and the circuit board 7 wet and cause a short circuit.

[0006] How to design a sealing structure for electric vehicle lamps to prevent external water vapor from causing a short circuit in the circuit board has become a technical problem that needs to be solved urgently by people in this field. Utility Model Content

[0007] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the utility model is to provide a sealing structure for electric vehicle lights to solve the problem that external water vapor is adsorbed on the circuit board, causing a short circuit in the circuit board.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A sealing structure for an electric vehicle lamp comprises a condenser, a translucent cover and an end cover, wherein the translucent cover is installed on the front side of the condenser and fixed by the end cover, the translucent cover and the condenser form a closed first chamber, and a first sealing ring is installed between the translucent cover and the condenser; an installation groove recessed toward the first chamber is provided at one end of the condenser away from the translucent cover, lamp beads and a circuit board are arranged in the installation groove, a lamp bead installation hole communicating with the first chamber is provided on the side wall of the installation groove, the lamp beads extend into the first chamber through the lamp bead installation hole, a positioning plate of the lamp beads abuts against the side wall of the installation groove, a third sealing ring is provided between the positioning plate of the lamp beads and the side wall of the installation groove, and a sealing cover for encapsulating the circuit board and the lamp beads in the installation groove is also included.

[0010] Furthermore, it includes a lamp housing, the inner wall of the lamp housing is provided with a limit baffle extending radially inward, the outer wall of the condenser close to the light-transmitting cover is provided with a limit baffle extending radially outward, the condenser is installed in the lamp housing and the limit baffle abuts against the limit baffle, the inner wall of the lamp housing and the outer wall of the condenser form a second chamber, the end cover includes a side baffle ring and a front baffle ring, wherein the front baffle ring abuts against the front wall of the light-transmitting cover to press the light-transmitting cover onto the condenser, and the side baffle ring is threadedly connected to the lamp housing.

[0011] Furthermore, a plurality of coaxial sealing grooves are arranged on the limiting retaining edge, a limiting ring is arranged on the rear wall of the light-transmitting cover, the first sealing ring is installed in the sealing groove, the limiting ring is inserted into the sealing groove and abuts against the first sealing ring.

[0012] Furthermore, it also includes a second sealing ring. A shielding ring coaxial with the side shielding ring is provided on the front shielding ring of the end cover. The longitudinal section of the second sealing ring is L-shaped. The first part of the second sealing ring is squeezed between the front shielding ring and the front wall of the light-transmitting cover, and the second part of the second sealing ring is squeezed between the shielding ring and the side wall of the light-transmitting cover to shield the gap between the light-transmitting cover and the focusing cover.

[0013] Furthermore, an air inlet ring groove is formed between the side retaining ring and the shielding ring, a notch is provided at the bottom of the shielding ring, and a plurality of push ribs are fixedly provided on the inner wall of the shielding ring. The push ribs abut against the outer wall of the second part of the second sealing ring, so that a gap is reserved between the outer wall of the second part of the second sealing ring and the inner wall of the shielding ring.

[0014] Furthermore, a second air inlet connected to the air inlet ring groove is provided at the bottom of the front baffle, the second air inlet is located below the notch, and an air duct aligned with the second air inlet is also provided on the lamp housing.

[0015] Furthermore, it also includes a radiator, one end of which is located in the installation groove and abuts against the circuit board, and the other end of the radiator extends through the sealing cover to the second cavity, and a plurality of cooling fins are provided on the part of the radiator located in the second cavity.

[0016] Furthermore, an air outlet is provided between the bottom wall of the second chamber and the air duct, a first air inlet connected to the air inlet ring groove is provided on the front baffle, and an air inlet hole connecting the air inlet ring groove with the second chamber is also provided on the limit baffle.

[0017] Furthermore, the first air inlet is arranged at the top of the front baffle ring, and the inner wall of the air inlet ring groove is provided with a shielding cover plate which is aligned with the first air inlet and extends downwardly at an angle.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the utility model can prevent water vapor on the front side of the vehicle lamp from entering the first chamber through the gap between the light collecting cover and the light transmitting cover, thereby eroding the lamp beads and reducing the risk of the lamp beads being eroded by water vapor;

[0019] The first chamber is further sealed by a third sealing ring between the lamp bead positioning plate and the side wall of the mounting groove, thereby improving the sealing performance of the first chamber; the circuit board and the lamp bead are sealed in the mounting groove by a sealing cover, thereby preventing external water vapor from contacting the circuit board, thereby improving the safety performance of the vehicle lamp and reducing the risk of short circuit of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a conventional vehicle lamp;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the expansion of the utility model;

[0023] Figure 4 This is a schematic cross-sectional view from a first angle of the present invention;

[0024] Figure 5 for Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0025] Figure 6 This is a schematic diagram of the lamp bead installation structure;

[0026] Figure 7 This is a schematic diagram of the structure of the lamp housing of the utility model;

[0027] Figure 8 is a schematic diagram of the structure of the end cover;

[0028] Fig. 9 is a schematic diagram of the structure of the condenser;

[0029] Fig.10 This is a cross-sectional view from a second angle of the present invention.

[0030] In the figure: 1, lamp housing; 11, limit baffle; 111, air inlet; 2, condenser; 21, limit rib; 22, sealing groove; 23, mounting groove; 231, sealing ring groove; 232, lamp bead mounting hole; 233, limit block; 3, light-transmitting cover; 31, limit ring; 4, end cover; 401, side baffle; 402, front baffle; 41, shielding ring; 411, notch; 412, push rib; 42, inlet Wind ring groove; 43, first air inlet; 44, shielding cover; 45, second air inlet; 51, first sealing ring; 52, second sealing ring; 53, third sealing ring; 6, lamp beads; 7, circuit board; 8, radiator; 81, cooling fins; 9, sealing cover; 91, first sealing cover; 92, second sealing cover; 101, first chamber; 102, second chamber; 103, air duct; 1031, air outlet. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments 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.

[0032] The present embodiment provides a sealing structure for an electric vehicle lamp, which is used in the lamp to prevent external water vapor from being adsorbed on the circuit board, thereby solving the problem of short circuit of the circuit board.

[0033] like Figure 2 and Figure 4 As shown, it includes a condenser 2 and a lamp housing 1, wherein the condenser 2 is installed on the inner side of the lamp housing 1, and the outer wall of the condenser 2 and the inner wall of the lamp housing 1 form a second chamber 102; a light-transmitting cover 3 is also provided on the opening side of the condenser 2 to block the opening of the condenser 2, wherein the light-transmitting cover 3 is fixed to the lamp housing 1 through an end cover 4, thereby realizing the fixation of the light-transmitting cover 3. At this time, the light-transmitting cover 3 and the inner wall of the condenser 2 form a first chamber 101.

[0034] like Figure 4 and Fig. 9 As shown, the tail end of the condenser 2 is provided with a mounting groove 23 which is recessed toward the opening side of the condenser 2, wherein a circuit board 7 and a lamp bead 6 are arranged inside the mounting groove 23, and the condenser 2 is also provided with a sealing cover 9 which closes the opening of the mounting groove 23.

[0035] In order to realize the installation of the lamp bead 6, in this embodiment, as Figure 6 and Fig. 9 As shown, the side wall of the mounting groove 23 is provided with a lamp bead mounting hole 232 communicating with the first chamber 101 , wherein the lamp bead 6 partially passes through the lamp bead mounting hole 232 and extends into the first chamber 101 .

[0036] In order to achieve sealing between the mounting groove 23 and the first chamber 101, in this embodiment, as shown in FIG. Fig. 9 As shown, a sealing ring groove 231 is provided on the side wall of the mounting groove 23 and is located outside the lamp bead mounting hole 232, wherein a third sealing ring 53 is installed inside the sealing ring groove 231. Figure 3 and Figure 6 As shown, the thickness of the third sealing ring 53 is greater than the depth of the sealing ring groove 231. After the third sealing ring 53 is installed in the sealing ring groove 231, part of the third sealing ring 53 is located on the outside of the sealing ring groove 231. When the lamp bead 6 begins to be installed, the positioning plate on the lamp bead 6 squeezes the third sealing ring 53 to deform it, and then the positioning plate on the lamp bead 6 is fixed in the installation groove 23 by bolts. While fixing the lamp bead 6, the sealing of the first chamber 101 is strengthened to prevent external water vapor from entering the first chamber 101 through the installation groove 23.

[0037] Specifically, in this embodiment, if Figure 6 As shown, a limit stopper 233 is fixedly provided on the side wall of the installation groove 23 , wherein a side wall of the circuit board 7 abuts against the limit stopper 233 to position the circuit board 7 .

[0038] As the car lamp is used, the temperature of the lamp bead 6 and the circuit board 7 will gradually increase. In order to cool the circuit board 7 and the lamp bead 6, in this embodiment, as shown in FIG. Figure 3 and Figure 6 As shown, a radiator 8 is also included. Specifically, a portion of the radiator 8 is located in the mounting groove 23, and the other portion extends through the sealing cover 9 to the second chamber 102. The radiator 8 located in the mounting groove 23 abuts against the circuit board 7. The radiator 8 located in the second chamber 102 is provided with a plurality of cooling fins 81 for strengthening the heat exchange between the radiator 8 and the air, thereby improving the heat dissipation effect of the circuit board 7.

[0039] In this embodiment, in order to facilitate the installation of the sealing cover 9, as shown in FIG. Figure 3 and Figure 6 As shown, the sealing cover 9 is divided into two parts including a first sealing cover 91 and a second sealing cover 92, wherein the first sealing cover 91 and the second sealing cover 92 gather toward the middle so as to abut against the outer wall of the heat sink 8, and the first sealing cover 91 and the second sealing cover 92 are used to seal the mounting groove 23 to prevent external water vapor from entering the mounting groove 23, thereby preventing water vapor from contacting the circuit board 7, and solving the problem of short circuit of the circuit board 7; specifically, the first sealing cover 91 and the second sealing cover 92 are fixed to the focusing cover 2 by bolts.

[0040] In order to electrically connect the external power to the circuit board 7, in this embodiment, Figure 6As shown, through holes are provided at the front and rear ends of the radiator 8 for cables to pass through, wherein a rubber plug is sleeved on the outside of the cable, and the outer wall of the rubber groove abuts against the inner wall of the through hole, thereby preventing water vapor from entering the installation groove 23 through the through hole.

[0041] In order to improve the sealing performance of the first chamber 101, in this embodiment, Figure 3 and Figure 5 As shown, a first sealing ring 51 is installed between the light-transmitting cover 3 and the light-collecting cover 2 , wherein specifically, a limiting rib 21 extending radially outward is provided on the outer wall of the opening side of the light-collecting cover 2 , wherein the first sealing ring 51 is clamped between the limiting rib 21 and the light-transmitting cover 3 .

[0042] To install the first sealing ring 51, in this embodiment, Figure 3 and Figure 5 As shown, a plurality of concentrically arranged sealing grooves 22 are provided on the limiting retaining edge 21, a limiting ring 31 is provided on the side of the light-transmitting cover 3 close to the focusing cover 2, and the first sealing ring 51 is installed in one of the sealing grooves 22. When the light-transmitting cover 3 is installed, the limiting ring 31 is inserted into the sealing groove 22 and squeezes the first sealing ring 51.

[0043] Through the above configuration, by inserting the limiting ring 31 into the sealing groove 22, the path of water vapor entering the first chamber 101 can be changed, increasing the difficulty of water vapor entering the first chamber 101, and the first sealing ring 51 can further enhance the sealing effect of the first chamber 101.

[0044] Among them, Figure 5 and Figure 8 As shown, the longitudinal section of the end cover 4 is in two opposite L-shapes, wherein the end cover 4 includes a side retaining ring 401 and a front retaining ring 402 , and the side retaining ring 401 of the end cover 4 is connected to the lamp housing 1 via threads.

[0045] In order to limit the continuous movement of the condenser 2 into the inner cavity of the lamp housing 1, in this embodiment, Figure 5 and Figure 7 As shown, the inner wall of the lamp housing 1 is further provided with a limit baffle 11 extending radially inward. When the condenser 2 is installed, the limit baffle 21 of the condenser 2 abuts against the limit baffle 11 of the lamp housing 1, thereby completing the positioning of the condenser 2.

[0046] Since the end cover 4 is connected to the lamp housing 1, the light cover 3 can be fixed by utilizing the inner wall of the front retaining ring 402 of the end cover 4 to abut against the outer wall of the light cover 3. At this time, when the electric vehicle is riding, external rainwater can easily flow through the gap between the front retaining ring 402 and the light cover 3 to the first sealing ring 51, thereby causing the risk of external rainwater entering the first chamber 101.

[0047] Therefore, in this embodiment, if Figure 3 and Figure 8 As shown, a shielding ring 41 is provided on the front baffle ring 402 of the end cover 4, wherein the shielding ring 41 is located on the inner side of the side baffle ring 401 and is arranged concentrically with the side baffle ring 401, and an air inlet ring groove 42 is formed between the shielding ring 41 and the side baffle ring 401; and a second sealing ring 52 is also included, wherein the longitudinal section of the second sealing ring 52 is L-shaped, as shown in FIG. Figure 5 As shown, when the end cover 4 is installed, the first part of the second sealing ring 52 is located between the inner wall of the front retaining ring 402 and the outer wall of the light-transmitting cover 3, and the second part of the second sealing ring 52 is between the light-transmitting cover 3, the side wall of the limiting retaining edge 21 and the inner wall of the shielding ring 41, so as to block the gap between the light-transmitting cover 3 and the focusing cover 2 to prevent the entry of external water vapor.

[0048] like Figure 2 As shown, when rainwater from the outside hits the front side of the light-transmitting cover 3, the rainwater flows along the light-transmitting cover 3 to the second sealing ring 52. At this time, water vapor is likely to remain on the second sealing ring 52. In order to solve the problem of residual water vapor, in this embodiment, as shown in FIG. Figure 8 and Fig.10 As shown, a notch 411 is provided at the bottom of the shielding ring 41, so that the shielding ring 41 is in a C-shape with its opening facing downward, and a plurality of push ribs 412 are also provided on the inner wall of the shielding ring 41, wherein the push ribs 412 abut against the side wall of the second sealing ring 52, so that a gap is left between the side wall of the second sealing ring 52 and the inner wall of the shielding ring 41 for water vapor to flow downward, so that the water vapor flows to the notch 411 and drips, preventing water vapor from remaining on the second sealing ring 52.

[0049] In this embodiment, if Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, a second air inlet 45 connected to the air inlet ring groove 42 is provided at the bottom of the front side of the end cover 4, and an air duct 103 opposite to the second air inlet 45 is provided on the lamp housing 1. When the electric vehicle is riding, wind from the front side of the lamp enters into the air inlet ring groove 42 through the second air inlet 45, and then flows backwards from the air duct 103. While the wind is flowing, the water vapor gathered at the notch 411 is driven backwards, thereby solving the problem of water vapor remaining in the second sealing ring 52 at the notch 411.

[0050] In order to enhance the heat dissipation effect of the radiator 8, in this embodiment, Figure 4 , Figure 5 and Fig.10 As shown, a first air inlet 43 connected to the air inlet ring groove 42 is provided on the top of the front retaining ring 402, and an air inlet hole 111 connecting the air inlet ring groove 42 with the second chamber 102 is provided on the limiting baffle 11, wherein an air outlet hole 1031 is also provided between the second chamber 102 and the air duct 103.

[0051] Through the above arrangement, during the riding of the electric vehicle, negative pressure is formed on the rear side of the headlight, and the wind on the front side of the headlight flows into the air duct 103 through the second air inlet 45, and then flows out of the lamp housing 1. As the wind flows, the pressure at the air duct 103 is lower than the pressure in the second chamber 102, and then the wind on the front side of the headlight enters the air inlet ring groove 42 through the first air inlet 43, and then flows into the second chamber 102 through the air inlet hole 111. At this time, the cold air passes through the cooling fins 81 of the radiator 8 for heat exchange, takes away part of the heat, and then enters into the air duct 103 from the air outlet 1031, thereby achieving cooling of the radiator 8.

[0052] Specifically, in this embodiment, Figure 5 As shown, the inner side wall of the end cover 4 is also provided with a shielding cover plate 44 located at the first air inlet 43, wherein the bottom end of the shielding cover plate 44 extends downward, and when the external wind blows onto the shielding cover plate 44 through the first air inlet 43, it will condense into water droplets on the shielding cover plate 44, and then fall downward to the outer wall of the shielding ring 41, and then flow downward along the outer wall of the shielding ring 41 to the notch 411, and then drip into the air duct 103. At this time, the shielding ring 41 can protect the second sealing ring 52 to prevent water droplets dripping from the shielding cover plate 44 from falling onto the second sealing ring 52, thereby reducing the chance of water droplets being retained on the second sealing ring 52, thereby reducing the possibility of water vapor entering the first chamber 101.

[0053] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A sealing structure for an electric vehicle lamp, comprising a condenser (2), a light-transmitting cover (3) and an end cover (4), characterized in that: The light-transmitting cover (3) is installed on the front side of the light-collecting cover (2) and is fixed by an end cover (4); the light-transmitting cover (3) and the light-collecting cover (2) enclose a first closed chamber (101); a first sealing ring (51) is installed between the light-transmitting cover (3) and the light-collecting cover (2); an installation groove (23) recessed toward the first chamber (101) is provided at one end of the light-collecting cover (2) away from the light-transmitting cover (3); a lamp bead (6) and a circuit board (7) are arranged in the installation groove (23); The side wall of the mounting groove (23) is provided with a lamp bead mounting hole (232) connected to the first chamber (101), the lamp bead (6) passes through the lamp bead mounting hole (232) and extends into the first chamber (101), the positioning plate of the lamp bead (6) abuts against the side wall of the mounting groove (23), a third sealing ring (53) is provided between the positioning plate of the lamp bead (6) and the side wall of the mounting groove (23), and also includes a sealing cover (9) that encapsulates the circuit board (7) and the lamp bead (6) in the mounting groove (23).

2. The electric vehicle lamp sealing structure according to claim 1, characterized in that: The lamp housing (1) comprises a lamp housing (1), wherein the inner side wall of the lamp housing (1) is provided with a limit baffle (11) extending radially inward, the outer wall of the condenser (2) close to the light-transmitting cover (3) is provided with a limit baffle (21) extending radially outward, the condenser (2) is installed in the lamp housing (1) and the limit baffle (21) abuts against the limit baffle (11), the inner wall of the lamp housing (1) and the outer wall of the condenser (2) form a second chamber (102), and the end cover (4) comprises a side baffle (401) and a front baffle (402), wherein the front baffle (402) abuts against the front wall of the light-transmitting cover (3) to press the light-transmitting cover (3) onto the condenser (2), and the side baffle (401) is threadedly connected to the lamp housing (1).

3. The electric vehicle lamp sealing structure according to claim 2, characterized in that: A plurality of coaxial sealing grooves (22) are provided on the limiting retaining edge (21), a limiting ring (31) is provided on the rear wall of the light-transmitting cover (3), a first sealing ring (51) is installed in the sealing groove (22), and the limiting ring (31) is inserted into the sealing groove (22) and abuts against the first sealing ring (51).

4. The electric vehicle lamp sealing structure according to claim 2, characterized in that: The invention also comprises a second sealing ring (52); a shielding ring (41) coaxial with the side shielding ring (401) is provided on the front shielding ring (402) of the end cover (4); the longitudinal section of the second sealing ring (52) is L-shaped; the first part of the second sealing ring (52) is squeezed between the front shielding ring (402) and the front wall of the light-transmitting cover (3); and the second part of the second sealing ring (52) is squeezed between the shielding ring (41) and the side wall of the light-transmitting cover (3) to shield the gap between the light-transmitting cover (3) and the focusing cover (2).

5. The electric vehicle lamp sealing structure according to claim 4, characterized in that: An air inlet ring groove (42) is formed between the side retaining ring (401) and the shielding ring (41); a notch (411) is provided at the bottom of the shielding ring (41); a plurality of push ribs (412) are fixedly provided on the inner side wall of the shielding ring (41); the push ribs (412) abut against the outer wall of the second part of the second sealing ring (52), so that a gap is reserved between the outer wall of the second part of the second sealing ring (52) and the inner wall of the shielding ring (41).

6. The electric vehicle lamp sealing structure according to claim 5, characterized in that: A second air inlet (45) connected to the air inlet ring groove (42) is provided at the bottom of the front baffle (402); the second air inlet (45) is located below the notch (411); and an air duct (103) aligned with the second air inlet (45) is also provided on the lamp housing (1).

7. The electric vehicle lamp sealing structure according to claim 6, characterized in that: It also includes a heat sink (8), one end of which is located in the mounting groove (23) and abuts against the circuit board (7), and the other end of the heat sink (8) passes through the sealing cover (9) and extends into the second chamber (102), and a plurality of heat dissipation fins (81) are provided on the portion of the heat sink (8) located in the second chamber (102).

8. The electric vehicle lamp sealing structure according to claim 7, characterized in that: An air outlet (1031) is provided between the bottom wall of the second chamber (102) and the air duct (103), a first air inlet (43) connected to the air inlet ring groove (42) is provided on the front baffle (402), and an air inlet hole (111) connecting the air inlet ring groove (42) and the second chamber (102) is also provided on the limit baffle (11).

9. The electric vehicle lamp sealing structure according to claim 8, characterized in that: The first air inlet (43) is arranged at the top of the front baffle (402), and the inner wall of the air inlet ring groove (42) is provided with a shielding cover plate (44) which is aligned with the first air inlet (43) and extends obliquely downward.

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