Vehicle lamp device

Abstract

A vehicle lamp device comprises a seat body structure and a light-emitting unit. The base structure comprises a shell base unit, a heat dissipation unit, a cylinder unit located on one of the shell base unit and the heat dissipation unit, and a chrysanthemum gasket unit arranged on the cylinder unit in a penetrating and sleeving mode and used for combining the shell base unit and the heat dissipation unit together. The light-emitting unit is arranged on the heat dissipation unit. By means of the cylinder unit and the chrysanthemum gasket unit, the shell base unit and the heat dissipation unit can be combined together without adopting a bagging construction method, so that the LED lamp has the advantages of being compact in overall structure and light in weight.

Description

Technical Field

[0001] The utility model relates to a vehicle component, in particular to a vehicle lamp device. Background Art

[0002] Chinese patent application publication number CN109268778 A discloses a vehicle lamp device suitable for installation on a motor vehicle. The lamp device comprises a housing unit, a heat sink unit made of metal and inserted into the housing unit, a sealing unit disposed between the housing unit and the heat sink unit, a light-emitting element disposed on the heat sink unit, and a circuit module electrically connected to the light-emitting element via electrical wiring. The heat sink unit includes a protruding portion for mounting the light-emitting element. The circuit module is located adjacent to the protruding portion, rather than on top of it.

[0003] During the production of the aforementioned automotive lamp device, the heat sink is pre-placed in a mold used to injection-mold the housing unit, and then plastic material is injected into the mold. In other words, the heat sink is embedded within the housing unit using a casting method. This production method has the disadvantage of requiring automated equipment to insert the heat sink into the mold, or manual insertion. The former increases production costs, while the latter poses a risk to workers. Furthermore, because the housing unit is made of a different material than the heat sink, the lamp device produced using the casting method is susceptible to poor bonding due to differences in specific heat and thermal expansion coefficients between the dissimilar materials. This can lead to different degrees of contraction and cooling between the housing unit and the heat sink, resulting in poor airtightness and watertightness. Furthermore, using screws or clamps to secure the housing unit and heat sink, as described in the background art of the aforementioned patent, results in a larger and heavier automotive lamp device. Finally, if the circuit module is not disposed on the protruding seat of the heat dissipation unit, there will be a problem of insufficient heat dissipation, which needs to be improved. Utility Model Content

[0004] The purpose of the present invention is to improve at least one disadvantage of the prior art.

[0005] The vehicle lamp device of the present invention comprises a base structure and a light-emitting unit. The base structure comprises a shell unit, a heat dissipation unit, and a column unit located between the shell unit and the heat dissipation unit. The light-emitting unit is arranged on the heat dissipation unit. The base structure also comprises a daisy gasket unit that is inserted into the column unit and is used to combine the shell unit and the heat dissipation unit together.

[0006] In the vehicle lamp device described in the present invention, the column unit is located on the housing unit, the column unit includes several first columns inserted into the heat dissipation unit, the chrysanthemum gasket unit includes several first chrysanthemum gaskets respectively inserted on the first columns, and the first chrysanthemum gasket is used to combine the housing unit and the heat dissipation unit together.

[0007] In the vehicle lamp device of the present invention, the housing unit is formed with a through hole, the heat dissipation unit includes a protruding seat portion protruding into the through hole, and the light-emitting unit includes a circuit module arranged on the protruding seat portion and a light-emitting element arranged on the circuit module.

[0008] The vehicle lamp device described in the present utility model comprises a first plate portion and a second plate portion located between the protruding seat portion of the heat dissipation unit and the light-emitting element, the column unit further comprises a second column inserted into the second plate portion of the circuit module, and the chrysanthemum gasket unit further comprises a second chrysanthemum gasket inserted into the second column to combine the circuit module with the housing unit.

[0009] In the vehicle lamp device described in the present invention, the through hole penetrates along a first direction, and the heat dissipation unit further includes two foot portions spaced apart from each other along a second direction transverse to the first direction, and a plate seat portion extending along the second direction and connected between the foot portions, and the protruding seat portion protrudes from the plate seat portion into the through hole.

[0010] In the vehicle lamp device of the present invention, the seat structure further comprises a sealing unit sleeved outside the protruding seat portion, and the sealing unit is located between the heat dissipation unit and the housing unit.

[0011] The beneficial effect of the present invention is that the shell unit and the heat dissipation unit can be combined together through the column unit and the chrysanthemum gasket unit without adopting the filling method, so that the present invention has the characteristics of a more compact overall structure and lighter weight, and at the same time there will be no problems such as airtightness and watertightness derived from the use of the filling method. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features and beneficial effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, in which:

[0013] Figure 1 is a perspective view illustrating an embodiment of the vehicle lamp device of the present invention;

[0014] Figure 2 is a partially exploded perspective view illustrating the embodiment;

[0015] Figure 3is a partially exploded perspective view illustrating the embodiment from another perspective;

[0016] Figure 4 is a cross-sectional view longitudinally cutting through a protruding seat portion and two first columns of the embodiment; and

[0017] Figure 5 is a cross-sectional view, cut transversely and through the boss portion of the embodiment;

[0018] Figure 6 It is an incomplete cross-sectional view, illustrating the relative relationship between a column element and a daisy-shaped gasket element;

[0019] Figure 7 is a cross-sectional view illustrating the relative relationship between a circuit module and the protruding seat portion of the embodiment. DETAILED DESCRIPTION

[0020] See Figure 1 、 2 3. An embodiment of the vehicle lamp device of the present invention comprises a base structure 1, a light-emitting unit 2 arranged in the base structure 1, and a mirror cover unit 3 arranged on the base structure 1.

[0021] See Figure 2 、 3 4. The base structure 1 includes a shell unit 4, a column unit 5 arranged on the shell unit 4, a heat dissipation unit 6 inserted on the column unit 5, a sealing unit 7 arranged between the shell unit 4 and the heat dissipation unit 6, and a daisy gasket unit 8 inserted on the column unit 5 for positioning and combining the heat dissipation unit 6 and the light-emitting unit 2 on the shell unit 4.

[0022] The housing unit 4 is made of plastic and includes an annular surrounding wall 41 and a seat wall 42 that cooperates with the surrounding wall 41 to define a seat space S1. The seat wall 42 is formed with a through hole 421 that extends forward and backward along a first direction D1. The through hole 421 is circular.

[0023] The column unit 5 includes two first columns 51 extending rearward from the base wall 42, and a second column 52 extending forward from the base wall 42. Each first column 51 is cylindrical and inserted into the heat dissipation unit 6. The first columns 51 are spaced apart from each other and located on opposite sides of the through hole 421. The second column 52 is cylindrical and located in the base space S1 and inserted into the light-emitting unit 2.

[0024] See Figure 2 、4 5. The heat dissipation unit 6 is made of metal and includes a plate seat portion 61 abutting against the seat wall 42 of the shell seat unit 4, a protruding seat portion 62 protruding forward from the plate seat portion 61 into the through hole 421 in the first direction D1, and two foot seats 63 protruding backward from the plate seat portion 61 in the first direction D1.

[0025] The first column 51 of the column unit 5 is inserted into the plate seat 61 at its upper and lower opposite ends. The plate seat 61 extends in a second direction D2, which is transverse to the first direction D1, and is connected to the foot seat 63. The protruding seat 62 is round. The foot seat 63 is rectangular and plate-shaped, and the foot seats 63 are spaced apart from each other in the second direction D2.

[0026] The sealing unit 7 is an O-shaped elastically deformable sealing ring that is sleeved outside the protruding seat 62 of the heat dissipation unit 6 and is located between the protruding seat 62 and the seat wall 42 of the housing unit 4 .

[0027] See Figure 2 、 4 6. The chrysanthemum gasket unit 8 includes several first chrysanthemum gaskets 81 made of metal and respectively inserted into the first column 51, and a second chrysanthemum gasket 82 made of metal and inserted into the second column 52. Each of the first chrysanthemum gasket 81 and the second chrysanthemum gasket 82 is a chrysanthemum gasket with no serration structure on both the inner and outer rings. Each of the first chrysanthemum gasket 81 and the second chrysanthemum gasket 82 includes an outer ring portion 83 in the shape of a circular ring, and an inner ring portion 84 extending radially inward from the inner edge of the outer ring portion 83. Each of the inner ring portions 84 can be tightly clamped against one of the first column 51 and the second column 52.

[0028] See Figure 2 、 4 7. The light-emitting unit 2 includes a circuit module 21 disposed on the protruding seat 62 and a light-emitting element 22 disposed on the circuit module 21.

[0029] The circuit module 21 is a circuit board with a circuit (the specific structure of the circuit is omitted in the figure), and includes a first plate portion 211 located between the protruding seat 62 of the heat dissipation unit 6 and the light-emitting element 22, and a second plate portion 212 protruding downward from the protruding seat 62.

[0030] The first plate portion 211 is for mounting the light emitting element 22 . The second plate portion 212 is for inserting the second column 52 and is positioned on the housing unit 4 and the heat dissipation unit 6 by the second daisy washer 82 that is sleeved on the second column 52 .

[0031] Each of the light-emitting elements 22 is an LED chip and is electrically connected to the circuit on the circuit module 21 .

[0032] The mirror cover unit 3 includes a headlight cover 31 arranged in front of the housing unit 4, a mirror cover seat 32 installed in the housing unit 4 to support the headlight cover 31, and a headlight lens 33 inserted in the mirror cover seat 32 and located in front of the light emitting element 22.

[0033] See Figure 2 、 4 6. The first feature of this embodiment is that the housing unit 4 and the heat dissipation unit 6 can be combined together by using the first column 51 of the column unit 5 and the first chrysanthemum gasket 81 without using the potting method. Specifically, because the housing unit 4 is made of relatively soft plastic and the first chrysanthemum gasket 81 is made of relatively hard metal, when the first chrysanthemum gasket 81 is inserted into the first column 51, each inner ring portion 84 can be tightly clamped against the corresponding first column 51, thereby positioning and combining the housing unit 4 and the heat dissipation unit 6. Since the thickness of the first chrysanthemum gasket 81 is quite thin, the required length of the first column 51 can also be shortened, thereby making the overall structure of this embodiment more compact. In addition, the first chrysanthemum gasket 81 is also lighter than bolts and nuts. Therefore, the design of combining the housing unit 4 and the heat dissipation unit 6 by using the first column 51 of the column unit 5 and the first chrysanthemum gasket 81 of the chrysanthemum gasket unit 8 in this embodiment can make the overall structure of this embodiment more compact and lighter than the design of the previous technology.

[0034] Similarly, the circuit module 21 is positioned on the housing unit 4 and the heat dissipation unit 6 by the second column 52 and the second daisy-shaped gasket 82 , which can also produce the effect of making the overall structure of this embodiment compact and light in weight.

[0035] See Figure 2 、 47. A second feature of this embodiment is that the first plate portion 211 of the circuit module 21 on which the light-emitting element 22 is mounted is also mounted on the protruding seat 62. Therefore, the heat dissipation unit 6 can dissipate heat from both the light-emitting element 22 and the circuit module 21 simultaneously, thereby preventing damage to the light-emitting element 22 and the circuit module 21 and reducing the probability of the light-emitting element 22 and the circuit module 21 malfunctioning due to overheating.

[0036] In summary, the beneficial effect of the vehicle lamp device of the present invention is that: through the column unit 5 and the chrysanthemum gasket unit 8, the housing unit 4 and the heat dissipation unit 6 can be combined together without using the potting method, so that the present invention has the characteristics of a more compact overall structure and lighter weight compared to the prior art, and at the same time, there will be no problems such as airtightness and watertightness derived from the use of the potting method.

[0037] The above description is merely a specific embodiment of the present invention and is not intended to limit the scope of the claims of the present invention. Equivalent variations based on the claims of the present invention and the contents of the specification should also be covered by the scope of the claims of the present invention.

Claims

1. A vehicle lamp device comprising a base structure and a light-emitting unit, wherein the base structure includes a housing unit, a heat dissipation unit, and a column unit located between the housing unit and the heat dissipation unit, wherein the light-emitting unit is disposed on the heat dissipation unit, and wherein: The seat structure further includes a daisy gasket unit which is sleeved on the column unit and is used to combine the shell unit and the heat dissipation unit together.

2. The vehicle lamp device according to claim 1, characterized in that: The column unit is located on the shell unit, and the column unit includes several first columns inserted in the heat dissipation unit. The chrysanthemum gasket unit includes several first chrysanthemum gaskets respectively inserted on the first columns. The first chrysanthemum gasket is used to combine the shell unit and the heat dissipation unit together.

3. The vehicle lamp device according to claim 2, characterized in that: The housing unit is formed with a through hole, the heat dissipation unit includes a protruding seat portion protruding into the through hole, and the light emitting unit includes a circuit module arranged on the protruding seat portion and a light emitting element arranged on the circuit module.

4. The vehicle lamp device according to claim 3, characterized in that: The circuit module includes a first plate portion located between the protruding seat portion of the heat dissipation unit and the light-emitting element, and a second plate portion. The column unit also includes a second column inserted into the second plate portion of the circuit module. The chrysanthemum gasket unit also includes a second chrysanthemum gasket that is inserted into the second column to combine the circuit module and the shell unit together.

5. The vehicle lamp device according to claim 4, characterized in that: The through hole passes through in a first direction, and the heat dissipation unit further includes two foot portions spaced apart from each other in a second direction transverse to the first direction, and a plate seat portion extending along the second direction and connected between the foot portions, and the protruding seat portion protrudes from the plate seat portion into the through hole.

6. The vehicle lamp device according to any one of claims 3 to 5, characterized in that: The seat structure further includes a sealing unit sleeved outside the protruding seat portion, and the sealing unit is located between the heat dissipation unit and the shell seat unit.

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