LED car lamp module

Abstract

The utility model discloses an LED car lamp module which comprises a lamp shell and a lampshade which are connected with each other, the lamp shell is provided with a base plate and an annular side plate, a light reflecting cavity for containing a car lamp body is formed in the lamp shell, the lamp shell is provided with an installation hole in the base plate, and the installation hole is connected with the car lamp body through a connecting piece. A first air duct and a second air duct are formed in the connecting piece; a first ventilation opening communicated with the first air duct and a second ventilation opening communicated with the second air duct are formed in one end, opposite to the lampshade, of the connecting piece; a first port communicated with the first air duct and a second port communicated with the second air duct are formed in the peripheral side of the connecting piece; a dehumidification part is arranged at the end, opposite to the lampshade, of the connecting part, and the dehumidification part is provided with an input end connected with the first port and an output end connected with the second port, so that a dehumidification loop is formed; air in the lamp shell can be dried, so that the humidity in the lamp shell is reduced, fogging on the lampshade is avoided, and sufficient light transmission of the lampshade is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive lighting modules, and in particular to an LED automotive lighting module. Background Technology

[0002] LED automotive light modules are used in automotive light assemblies. They emit light through LED beads on a circuit board, which are then reflected by a reflector inside the module to illuminate the road ahead. Currently, automotive light modules include a lamp housing, a lamp cover, and a light-emitting lamp body. The lamp body includes a circuit board and LED beads mounted on it. The lamp housing and lamp cover are connected to form a cavity, in which the lamp body emits light. The connecting end of the lamp body extends outside the lamp housing, and a heat dissipation mechanism is located outside the lamp housing to conduct heat to the connecting end of the lamp body and dissipate heat from the lamp body. When the external air humidity is high, and the LED automotive light module operates in a high-humidity environment for a long time, moisture can easily enter the lamp housing through gaps, causing the internal humidity of the lamp housing to rise, fogging on the lamp cover, and affecting the light transmission of the lamp cover. Utility Model Content

[0003] The purpose of this invention is to provide an LED vehicle light module that can dry the air inside the lamp housing to reduce the humidity inside the lamp housing, prevent fogging on the lamp cover, and thus ensure that the lamp cover can transmit light fully.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An LED automotive lamp module includes a lamp housing and a lamp cover connected to each other. The lamp housing has a base plate and an annular side plate. The interior of the lamp housing forms a reflective chamber for accommodating the main body of the automotive lamp. The lamp housing has mounting holes on the base plate, and the mounting holes are connected to the main body of the automotive lamp through connectors.

[0006] The connector has a first air duct and a second air duct inside; the connector has a first vent connecting to the first air duct and a second vent connecting to the second air duct at the end opposite to the lamp cover; the connector has a first port connecting to the first air duct and a second port connecting to the second air duct on its outer periphery; the connector has a dehumidifier at the end opposite to the lamp cover, the dehumidifier having an input end connected to the first port and an output end connected to the second port, so as to form a dehumidification circuit that allows air to circulate between the lamp cover and the dehumidifier.

[0007] Based on the above technical solution, the present invention can be improved as follows:

[0008] Furthermore, the connector is an annular connector, which includes a first seat body and a second seat body that are mated together. The first seat body has a first annular groove and a second annular groove on the mating surface. The first annular groove and the second annular groove are arranged coaxially with the inner hole of the first seat body. The first annular groove serves as the first air duct and is located near the inner hole of the first seat body. The second annular groove serves as the second air duct and is located near the edge of the first seat body.

[0009] When the first and second seats are docked together, the docking surface of the second seat closes the openings of the first and second annular grooves on the first seat.

[0010] Furthermore, the first seat body is provided with the first ventilation opening and the second ventilation opening on its outer end face; the first ventilation opening is located near the inner hole of the first seat body and is connected to the first annular groove, and the second ventilation opening is located near the edge of the first seat body and is connected to the second annular groove.

[0011] Furthermore, multiple first and second ventilation openings are provided and are arranged at equal intervals along the circumferential direction on the outer end face of the first base.

[0012] Furthermore, the outer end face of the first base is provided with an insertion head communicating with the inner hole for the connecting end of the vehicle lamp body to be inserted; the insertion head is provided with a locking hole on its peripheral surface, and the connecting end of the vehicle lamp body inserted into the insertion head is locked by locking a locking bolt into the locking hole.

[0013] Furthermore, the headlight body has a first sealing ring fitted onto the connecting end, and the insertion head has a sealing ring slot at the insertion end for fixing and accommodating the first sealing ring.

[0014] Furthermore, the second seat body is provided with the first port and the second port on its outer peripheral surface. The first port extends into the second seat body to form a first air passage communicating with the first annular groove, and the second port extends into the second seat body to form a second air passage communicating with the second annular groove.

[0015] Furthermore, the second base body is provided with an annular connecting part on its outer peripheral side, and the annular connecting part is fixedly connected to the outer surface of the substrate of the lamp housing.

[0016] Furthermore, the dehumidifying component includes a drying box fixedly mounted on the annular connecting portion of the second base body. The drying box contains a dehumidifying chamber for holding a desiccant pack and a fan chamber for mounting a fan. A through hole is provided between the dehumidifying chamber and the fan chamber to allow air to circulate between them. The input end is located on one side of the drying box and communicates with the dehumidifying chamber, while the output end is located on the other side of the drying box and communicates with the fan chamber.

[0017] Furthermore, a second sealing ring is provided between the first seat and the second seat.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This utility model uses a connector to install the main body of the vehicle lamp inside the lamp housing. The connector forms a first air duct and a second air duct inside. The connector has two vents on the side opposite the lamp cover, each connecting to one of the two air ducts. The connector also has two ports on its outer periphery, each connecting to one of the two air ducts. A dehumidifier is provided on the side of the connector opposite the lamp cover. The input and output ends of the dehumidifier are connected to the two ports on the connector, forming a dehumidification circuit that allows air to circulate between the lamp housing and the dehumidifier. This dehumidification circuit dries the air inside the lamp housing, reducing the humidity inside the lamp housing, preventing fogging on the lamp cover, and ensuring that the lamp cover transmits light fully. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a disassembly and assembly diagram of the LED vehicle light module in the embodiment;

[0022] Figure 2 This is an assembly diagram of the LED vehicle headlight module after the lamp cover has been removed, as shown in the embodiment.

[0023] Figure 3 This is a structural diagram of the front end of the connector when connecting the vehicle headlight body in the embodiment;

[0024] Figure 4 This is a structural diagram of the rear end of the connector after part of the dehumidification box panel has been removed when connecting the vehicle headlight body in the embodiment.

[0025] Figure 5 This is a cross-sectional view of the connector used to connect the headlight body in the embodiment;

[0026] Figure 6 This is a structural diagram of the rear end of the first seat in the embodiment;

[0027] Figure 7 This is a structural diagram of the front end of the first seat in the embodiment;

[0028] Figure 8 This is a structural diagram of the second seat in the embodiment.

[0029] Appendix Figure 5 The arrows in the diagram indicate the direction of airflow during dehumidification.

[0030] The markings on the attached diagram are as follows: 1-Lamp housing, 101-Substrate, 102-Annular side plate, 2-Lamp shade, 201-Lamp shade body, 202-Annular edge, 3-Mounting hole, 4-First ventilation port, 5-Second ventilation port, 6-First port, 7-Second port, 8-Lamp post, 9-Circuit board, 10-LED lamp bead, 11-Heat sink, 12-Cooling fan, 13-First base, 14-Second base, 1401-Annular connection, 15-First annular groove, 16-Second annular groove, 17-Insertion head, 18-Locking hole, 19-First sealing ring, 20-Second sealing ring, 21-Hook, 22-Groove, 23-Drying box, 24-Partition, 25-Desiccant pack, 26-Fan, 27-First air duct, 28-Second air duct. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These descriptions are intended to aid in understanding the utility model but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] See Figures 1 to 8 This embodiment relates to an LED vehicle lamp module, including a lamp housing 1 and a lamp cover 2 connected to each other, and a light-emitting vehicle lamp body disposed inside the lamp housing 1; the lamp housing 1 has a non-transparent substrate 101, an annular side plate 102 disposed on the substrate 101, and a shell opening opposite to the substrate 101; the lamp cover 2 has a light-transmitting lamp cover body 201 and an annular edge portion 202.

[0033] The lamp housing 1 has a reflective cavity inside. The lamp cover body 201 is connected to the opening of the lamp housing 1 through the annular edge 202 to seal the reflective cavity inside the lamp housing 1. The reflective cavity has a reflective mirror on its inner wall. The lamp housing 1 has a mounting hole 3 in the middle of the substrate 101 that communicates with the reflective cavity. The vehicle lamp body is detachably installed in the lamp housing 1 through the mounting hole 3 via a connector. The vehicle lamp body can emit light in the reflective cavity inside the lamp housing 1. After the light is reflected by the reflective mirror on the inner wall of the reflective cavity, it is irradiated outward through the lamp cover body 201.

[0034] The connector has a first air duct and a second air duct inside; the connector has a first vent 4 connecting to the first air duct and a second vent 5 connecting to the second air duct at the end opposite to the lamp cover; the connector has a first port 6 connecting to the first air duct and a second port 7 connecting to the second air duct on its outer periphery; the connector has a dehumidifier at the end opposite to the lamp cover 2, the dehumidifier has an input end and an output end, the input end of the dehumidifier is connected to the first port 6 of the connector, and the output end of the dehumidifier is connected to the second port 7 of the connector.

[0035] In practice, the air inside the lamp housing 1 enters the dehumidifier after passing through the first vent 4 of the connector, the first air duct, the first port 6 of the connector, and the input end of the dehumidifier. After being dehumidified inside the dehumidifier, the air returns to the lamp housing 1 after passing through the second port 7 of the connector, the second air duct, and the second vent 5 from the output end of the dehumidifier. This forms a dehumidification circuit that allows air to circulate between the lamp housing 1 and the dehumidifier. This dehumidification circuit dries the air inside the lamp housing 1, reducing the humidity inside the lamp housing 1, preventing fogging on the lampshade body 201, and ensuring that the lampshade body 201 is fully transparent.

[0036] Specifically, the lamp housing 1 is made of non-transparent material and is a horn-shaped housing. The diameter of the annular side plate 102 of the lamp housing 1 gradually increases from the front end to the rear end. The base plate 101 of the lamp housing 1 is located at the front end of the lamp housing 1, and the opening of the lamp housing 1 is formed at the rear end of the lamp housing 1. The inner wall surface of the lamp housing 1 is coated with reflective material to form a reflective mirror surface. The mounting hole 3 is opened at the center of the base plate 101 of the lamp housing 1.

[0037] The lampshade 2 is made of transparent material and is an arc-shaped cover that protrudes outward from the lamp housing 1. The lampshade body 201 has an arc-shaped inner surface on the inside and an annular edge 202 is formed around the lampshade body 201 to facilitate the fixed connection with the opening of the lamp housing 1 by adhesive. Depending on the actual situation, the annular edge 202 of the lampshade 2 and the opening of the lamp housing 1 can also be connected by a snap-fit ​​method.

[0038] The headlight body includes a lamp post 8, which is made of aluminum alloy. Depending on the actual situation, other suitable heat-conducting materials, such as brass, can also be used instead. One end of the lamp post 8 has a circuit board 9 on its outer circumference, and LED beads 10 are soldered onto the circuit board 9. The circuit board 9 is electrically connected to the power supply cable of the car. When the circuit board 9 is powered on, it drives the LED beads 10 to emit light. The light is reflected by the reflector inside the lamp housing 1 and then shines outward from the lamp cover body 201. The other end of the lamp post 8 is a connecting end and is detachably connected to the mounting hole 3 on the lamp housing 1 through a connector, and extends out of the lamp housing. The external heat sink 11 is connected to the heat sink 12, and the heat sink 11 is equipped with a cooling fan 12 at the heat dissipation end. The heat generated by the LED bead 10 when it emits light is conducted to the lamp post 8 through the circuit board 9. The heat sink 11 absorbs the heat from the lamp post 8 at the heat conduction end, and the cooling fan 12 at the heat dissipation end accelerates the airflow to cool the heat sink 11. The heat sink 11 is a rectangular block structure. One end of the heat sink 11 is the heat conduction end, and the other end of the heat sink 11 is the heat dissipation end. The heat sink 11 is made of aluminum alloy. Depending on the actual situation, other suitable heat conduction materials, such as brass, can also be used instead.

[0039] The connector is an annular connector, which includes a first seat body 13 and a second seat body 14 that are mated together. The two seats have an inner hole at the center that allows them to communicate with each other when mated, so that the connecting end of the lamp post 8 can pass through the connector. When mated together, the inner end faces of the first seat body 13 and the second seat body 14 fit together, and at this time, the inner end faces of the two seats are mating surfaces. The first seat body 13 is provided with a first annular groove 15 and a second annular groove 16 on the mating surface. The first annular groove 15 and the second annular groove 16 are arranged coaxially with the inner hole of the first seat body 13. The diameter of the first annular groove 15 is smaller than the diameter of the second annular groove 16, so that the first annular groove 15 serves as the first air duct and is close to the inner hole of the first seat body 13, and the second annular groove 16 serves as the second air duct and is close to the edge of the first seat body 13.

[0040] The first base 13 has a first ventilation opening 4 and a second ventilation opening 5 on its outer end face; the first ventilation opening 4 is located near the inner hole of the first base 13 and is connected to the first annular groove 15, and the second ventilation opening 5 is located near the edge of the first base 13 and is connected to the second annular groove 16; there are multiple first ventilation openings 4 and second ventilation openings 5, and they are arranged at equal intervals along the circumference on the outer end face of the first base 13.

[0041] During the cyclic drying process, the dried air is blown out from the second vent 5 and flows along the inner surface of the annular side plate 102 of the lamp housing 1 towards the lampshade body 201. Guided by the arc-shaped inner surface of the lampshade body 201, the air flows from the edge of the lampshade body 201 towards the center to absorb moisture and then flows towards the substrate 101 of the lamp housing 1. It then flows back into the dehumidification circuit through the first vent 4 for further drying. This cycle is repeated to reduce the humidity inside the lamp housing 1, prevent fogging on the lampshade body 201, and ensure that the lampshade body 201 is fully transparent. Since the second vent 5 is located near the edge of the first base 13, the dried air can cover the corner areas of the lamp housing 1 and the lampshade 2, avoiding drying blind spots and ensuring the drying effect.

[0042] The outer end face of the first base 13 has an insertion head 17 connected to the inner hole. The insertion head 17 is a circular tube structure. The insertion head 17 has a locking hole 18 on its circumferential surface. The locking hole 18 has an internal thread and is radially connected to the inner cavity of the insertion head 17. The connecting end of the lamp post 8 is inserted into the annular connecting seat from inside the lamp housing 1 through the insertion head 17 and locked by locking the lamp post 8 with a locking bolt inserted into the locking hole 18. The lamp post 8 has a first sealing ring 19 sleeved on the connecting end. The insertion head 17 has a sealing ring groove at the insertion end for fixing and accommodating the first sealing ring 19 to increase the sealing performance and prevent the air that has absorbed moisture from leaking out from the gap formed between the outer wall of the connecting end of the lamp post 8 and the inner wall of the insertion head 17.

[0043] After the first seat 13 and the second seat 14 are connected together, they are locked together by bolts. A second sealing ring 20 is provided between the first seat 13 and the second seat 14 to increase the sealing performance. When they are connected together, the mating surface of the second seat 14 closes the openings of the first annular groove 15 and the second annular groove 16 on the first seat 13. The second seat 14 has a first port 6 and a second port 7 on its outer peripheral surface. The first port 6 extends into the second seat 14 to form a first air passage 27 that communicates with the first annular groove 15. The second port 7 extends into the second seat 14 to form a second air passage 28 that communicates with the second annular groove 15. The second seat 14 has an annular connecting part 1401 on its outer peripheral side. The annular connecting part 1401 is fixedly connected to the outer surface of the base plate 101 of the lamp housing 1 by bolts. Both the annular connecting part 1401 and the base plate 101 of the lamp housing 1 are provided with bolt holes so that bolts can be inserted to fix the annular connecting part 1401 to the base plate 101 of the lamp housing 1.

[0044] The second base 14 has a hook 21 on its outer end face, and the heat sink 11 has a groove 22 on its outer peripheral surface. The hook 21 and the groove 22 are engaged with each other to fix the heat sink 11 on the outer end face of the second base 14 and keep the heat-conducting end of the heat sink 11 in contact with the connection end of the lamp bead.

[0045] The dehumidification component includes a drying box 23 fixedly mounted on the annular connecting portion 1401 of the second base 14. The drying box 23 is a rectangular box, and a partition 25 is provided inside the drying box 23, dividing the internal space of the drying box 23 into a dehumidification chamber and a fan chamber. The drying box 23 has an input end on one side connecting to the dehumidification chamber and an output end on the other side connecting to the fan chamber. Ventilation holes are provided on the partition 25, connecting the dehumidification chamber and the fan chamber. The chamber contains a desiccant pack 25, which is filled with desiccant to absorb moisture from the air entering the dehumidification chamber. A fan 26 is installed in the fan chamber, which can agitate the air in the fan chamber to accelerate the airflow from the input end to the output end of the drying box 23. The input end of the drying box 23 is connected to the first port 6 on the second base 14 through a pipe, and the output end of the drying box 23 is connected to the second port 7 on the second base 14 through a pipe.

[0046] During dehumidification, the dehumidified air enters the drying box 23 from the input end of the drying box 23, passes through the dehumidification chamber and the fan chamber in sequence, and is then transported from the output end of the drying box 23 to the second port 7 on the second base 14.

[0047] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. An LED vehicle lamp module, comprising a lamp shell and a lamp cover connected with each other, the lamp shell having a base plate and a ring-shaped side plate, an inner part of the lamp shell forming a light reflection chamber for accommodating a vehicle lamp body, the lamp shell being provided with a mounting hole on the base plate, the mounting hole being connected with the vehicle lamp body through a connecting piece; characterized in that, the connecting piece has a first air duct and a second air duct formed in an inner part of the connecting piece; the connecting piece is provided with a first air vent communicating with the first air duct and a second air vent communicating with the second air duct at an end opposite to the lamp cover; the connecting piece is provided with a first port communicating with the first air duct and a second port communicating with the second air duct at an outer circumferential side of the connecting piece; the connecting piece is provided with a dehumidifying piece at the end opposite to the lamp cover, the dehumidifying piece having an input end connected with the first port and an output end connected with the second port to form a dehumidifying loop for circulating air between the lamp shell and the dehumidifying piece. The connecting piece is a ring-shaped connecting seat, the ring-shaped connecting seat comprising a first seat body and a second seat body abutting with each other, the first seat body being provided with a first ring-shaped groove and a second ring-shaped groove on an abutting surface, the first ring-shaped groove and the second ring-shaped groove being coaxially arranged with an inner hole of the first seat body, the first ring-shaped groove serving as the first air duct and being close to the inner hole of the first seat body, the second ring-shaped groove serving as the second air duct and being close to a rim of the first seat body; 2. The LED vehicle lamp module of claim 1, wherein, When the first seat body and the second seat body abut with each other, the abutting surface of the second seat body closes the groove openings of the first ring-shaped groove and the second ring-shaped groove on the first seat body. The first seat body is provided with the first air vent and the second air vent on an outer end surface of the first seat body; the first air vent is located close to the inner hole of the first seat body and communicates with the first ring-shaped groove, and the second air vent is located close to the rim of the first seat body and communicates with the second ring-shaped groove.

3. The LED vehicle lamp module of claim 2, wherein, The first air vent and the second air vent are provided with a plurality of air vents and are arranged at equal intervals in a circumferential direction on the outer end surface of the first seat body.

4. The LED vehicle lamp module of claim 3, wherein, The outer end surface of the first seat body is provided with a plug-in head communicating with the inner hole at the inner hole, so as to allow a connecting end of the vehicle lamp body to be inserted into the plug-in head; the plug-in head is provided with a locking hole on a peripheral surface, and a locking bolt is locked into the locking hole, so as to lock the connecting end of the vehicle lamp body inserted into the plug-in head.

5. The LED vehicle lamp module of claim 2, wherein, The vehicle lamp body is provided with a first sealing ring sleeved on the connecting end, and the plug-in head is provided with a sealing ring clamping groove for fixing the first sealing ring on the plug-in head.

6. The LED vehicle lamp module of claim 5, wherein, The second seat body is provided with the first port and the second port on an outer peripheral surface of the second seat body, the first port extending in the second seat body to form a first air duct communicating with the first ring-shaped groove, and the second port extending in the second seat body to form a second air duct communicating with the second ring-shaped groove.

7. The LED vehicle lamp module of claim 2, wherein, The second seat body is provided with a ring-shaped connecting portion on an outer circumferential side of the second seat body, and the ring-shaped connecting portion is fixedly connected with an outer surface of the base plate of the lamp shell.

8. The LED vehicle lamp module of claim 5, wherein, The dehumidifying piece comprises a drying box fixedly arranged on the ring-shaped connecting portion of the second seat body, the drying box having a dehumidifying chamber for accommodating a desiccant bag and a fan chamber for mounting a fan, and the dehumidifying chamber and the fan chamber being provided with a through hole for allowing air to flow between the dehumidifying chamber and the fan chamber; the input end is arranged on one side of the drying box and communicates with the dehumidifying chamber, and the output end is arranged on the other side of the drying box and communicates with the fan chamber.

9. The LED vehicle lamp module of claim 8, wherein, The first seat body and the second seat body are provided with a second sealing ring therebetween.

10. The LED vehicle lamp module of any of claims 2-9, wherein, ​

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