Vehicle lamp and sealing connection structure of exposed movable radiator and lamp shell of vehicle lamp

Abstract

The utility model discloses a vehicle lamp and a sealing connection structure of an exposed movable radiator and a lamp shell of the vehicle lamp, and aims to overcome the defect that the lamp of the conventional vehicle lamp is positioned in the lamp shell, so that the heat exchange performance is limited, and the performance heat fade of the vehicle lamp is caused. The LED lamp comprises a sealing ring, a radiator and a lamp shell, a part of the radiator extends out of the lamp shell, the radiator is movably connected with the lamp shell, the sealing ring is of a flexible structure, the sealing ring is respectively connected with the radiator and the lamp shell in a sealing mode, the sealing ring is arranged on the side wall of the radiator in a sleeved mode, and the sealing ring is arranged on the side wall of the radiator. The lamp shell is provided with a lamp shell installation groove, the sealing ring is inserted into the lamp shell installation groove in the installation direction, and the installation direction is perpendicular to the direction of elastic force applied to the radiator by the sealing ring. The sealing ring connected with the radiator and the lamp shell in the orthogonal direction has the advantages of being reliable in connection and not prone to disengagement.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting, and more specifically, it relates to a vehicle lamp and a sealed connection structure for its exposed movable radiator and lamp housing. Background Technology

[0002] Vehicle lights are lighting fixtures used for vehicle illumination, fulfilling both functional and aesthetic requirements. Vehicle lights require adjustment of the beam direction, typically achieved using a dimming mechanism. The light-emitting components of a vehicle light fixture include the LED lamp body, a reflector and lens for focusing and shaping the light, a PCB board for controlling and powering the LED lamp body, and a heat sink for dissipating heat from the lamp body.

[0003] For lower-power vehicle lights, the lamp is typically built into the lamp housing, resulting in a low heat dissipation load. The aforementioned setup can maintain thermal balance. However, for higher-power vehicle lights, the heat sink built into the lamp housing cannot efficiently exchange heat with the outside environment, leading to severe heat accumulation. To achieve efficient heat exchange, this application uses a method where the heat sink fins are externally placed within the lamp housing. However, this method introduces a protection issue, as the heat sink and its light-emitting components can move relative to the lamp housing, allowing external moisture to easily penetrate the interior of the lamp housing.

[0004] Chinese Patent CN202320719221.9, entitled "An Externally Heat-Dissipating, Potentiable LED Automotive Lighting Module," discloses an externally heat-dissipating, potentiable LED automotive lighting module. The module includes a lamp housing, a module bracket fixed to the rear side of the lamp housing, and a heat sink. An aluminum substrate is disposed between the module bracket and the heat sink. The aluminum substrate is in close contact with the heat sink, and the heat sink transfers heat to the outside of the lamp housing. The module bracket includes an integrally formed bracket base, bracket wall, and bracket surface. A potting port is provided on the bracket surface to protect the aluminum substrate by potting adhesive. The heat sink is located on the rear side of the lamp housing, dissipating heat from the aluminum substrate to the outside of the lamp housing. However, this method results in the heat sink being fixedly connected to the lamp housing, preventing the headlight from being dimmed. This application aims to improve upon this design. Summary of the Invention

[0005] This invention overcomes the shortcomings of existing vehicle lights where the lamp fixture is located inside the lamp housing, resulting in limited heat exchange performance and thermal degradation of the vehicle light performance. It provides a sealed connection structure for the exposed movable heat sink and lamp housing of a vehicle light, which solves the waterproofing problem of the heat sink being partially arranged outside the lamp housing.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A sealing connection structure for an exposed movable radiator and lamp housing of a vehicle lamp includes a sealing ring, a radiator, and a lamp housing. A portion of the radiator extends beyond the lamp housing, and the radiator is movably connected to the lamp housing. The sealing ring is a flexible structure and is sealingly connected to both the radiator and the lamp housing. The sealing ring is fitted onto the side wall of the radiator, and the lamp housing has a lamp housing mounting groove. The sealing ring is inserted into the lamp housing mounting groove along an installation direction perpendicular to the direction of the elastic force applied by the sealing ring to the radiator.

[0008] This application provides a sealing structure between a movable lamp housing and a heat sink. The sealing ring connects both the lamp housing and the heat sink, sealing the gap between them. For dimming purposes, the heat sink, which is fixedly connected to the light-emitting and dimming structures in the vehicle lamp, rotates relative to the lamp housing. The sealing ring flexibly deforms, adapting to the deformation through three-dimensional deformation to maintain the seal.

[0009] The sealing ring is inserted into the lamp housing mounting groove in a direction perpendicular to the direction of the sealing ring's elastic force. This makes it less likely for the sealing ring to detach when the heat sink moves relative to the lamp housing, resulting in higher reliability.

[0010] Preferably, the sealing ring includes a first sealing flange and a second sealing flange, wherein the first sealing flange is fitted to the side wall of the heat sink, and the second sealing flange is fitted to the groove wall of the lamp housing mounting groove.

[0011] Preferably, the sealing ring has pleats between the first sealing flange and the second sealing flange. These pleats provide a margin for three-dimensional deformation of the sealing ring, dynamically compensating for displacement between the heat sink and the lamp housing, while also improving the durability of the sealing ring.

[0012] Preferably, the side of the first sealing flange closest to the radiator is serrated. The serrated first sealing flange can improve the sealing performance with the radiator, and the serrations form a series of sealing labyrinths with the sidewall of the radiator, thereby achieving a seal.

[0013] Preferably, the heat sink has a protruding limiting flange, and both ends of the first sealing flange are respectively abutted against the sidewall of the limiting flange. During dimming, the sealing ring is driven by a pulling force to move the first sealing flange, and the limiting flange can limit the movement of the first sealing flange.

[0014] Preferably, the thickness of the second sealing flange is less than the width of the lamp housing mounting groove. This structure allows the second sealing flange to be inserted into the lamp housing mounting groove.

[0015] Preferably, the surfaces of the first and second sealing flanges are provided with protruding teeth, and the distance from the tip of the second sealing flange to its bottom is greater than that of the lamp housing mounting groove. Since the second sealing flange is a flexible structure, by applying pressure, it can be inserted into the lamp housing mounting groove. When the pressure is removed, the second sealing flange naturally resets under the influence of elastic potential energy, causing its crests and troughs to abut against the groove wall of the lamp housing mounting groove, achieving an interference fit and simultaneously enhancing sealing performance and connection strength.

[0016] Preferably, the ratio of the width of the lamp housing mounting groove to the thickness of the second sealing flange is between 1:1.2 and 1:1.5.

[0017] An automotive lighting fixture includes a sealed connection structure for an exposed movable heat sink and a lamp housing, as described above. The lamp housing has a shaft groove, and the heat sink has a rotating shaft. The rotating shaft is inserted into the shaft groove, and the rotating shaft and the shaft groove are rotatably connected. The rotatable connection between the heat sink and the lamp housing is achieved by utilizing the rotatable connection between the rotating shaft and the shaft groove.

[0018] Preferably, the heat sink is fixedly connected to several mating parts, and the center of gravity of the heat sink and the mating parts is located on the axis of the rotating shaft. This structure can eliminate the rotational inertia generated by the rotation of the heat sink and its mating parts during dimming, thereby improving the optical path stability of the lamp.

[0019] Compared with the prior art, the beneficial effects of this utility model are: (1) the sealing ring connected to the heat sink and the lamp housing in an orthogonal direction has the characteristics of reliable connection and not easy to detach; (2) the convex teeth are set on the second sealing flange, which can not only achieve sealing, but also improve the connection capability of the lamp housing mounting groove through interference fit. Attached Figure Description

[0020] Figure 1 It is a cross-sectional view of the lamp;

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is the rear view of the light fixture;

[0023] Figure 4 yes Figure 3 Cross-sectional view at point BB;

[0024] Figure 5 This is a schematic diagram of the sealing ring of this utility model;

[0025] Figure 6 This is a schematic diagram showing the connection of the sealing ring, heat sink, and lamp housing in another embodiment;

[0026] Figure 7 is Figure 6 the sectional axonometric drawing of the sealing ring in

[0027] In the figure:

[0028] sealing ring 1, radiator 2, lamp housing 3, limiting flange 4, first sealing flange 5, second sealing flange 6, lamp housing mounting groove 7, fold 8, convex tooth 9, rotating shaft 10, shaft groove 11, wire outlet 12, air vent valve 13, dimming structure 14. Detailed implementation manners

[0029] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0031] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Embodiment:

[0033] A sealing connection structure for an exposed movable radiator 2 and a lamp housing 3 of a vehicle lamp, referring to Figure 1 , Figure 3 and Figure 6 shown, includes a sealing ring 1, a radiator 2 and a lamp housing 3. A part of the radiator 2 extends outside the lamp housing 3, and the radiator 2 is movably connected to the lamp housing 3. The sealing ring 1 is respectively sealingly connected to the radiator 2 and the lamp housing 3. According to the enclosure of the radiator 2, the sealing ring 1 and the lamp housing 3, an inner space and an outer space of the lamp housing 3 are formed. Through the sealing of the sealing ring 1, the inner space and the outer space of the lamp housing 3 are separated, maintaining the sealing of the inner space of the lamp housing 3 and preventing dust and moisture from invading the inner space of the lamp housing 3, which has a negative effect on the lighting function of the lamp body.

[0034] Referring to Figure 5 and Figure 7As shown, the sealing ring 1 is a flexible structure, and the sealing ring 1 is sleeved on the side wall of the radiator 2. The sealing ring 1, as its name reveals, is a closed ring body with its head and tail connected. The perimeter of the inner ring of the ring body is smaller than the perimeter of the radiator 2. After stretching the sealing ring 1 by its flexibility, it is sleeved on the radiator 2, and its elasticity is applied to the radiator 2, and the connection with the radiator 2 is maintained by generating frictional force. In some embodiments, the radiator 2 is provided with a protruding limiting flange 4, and both ends of the first sealing flange 5 are respectively in contact with the side wall of a limiting flange 4. During the dimming process, the sealing ring 1 is driven by the pulling force to move the first sealing flange 5, and the limiting flange 4 can play a role in limiting the first sealing flange 5.

[0035] As shown in Figure 2 As shown, the lamp housing 3 is provided with a lamp housing mounting groove 7, and the sealing ring 1 is inserted into the lamp housing mounting groove 7 along the mounting direction, and the mounting direction is perpendicular to the direction of the elastic force applied by the sealing ring 1 to the radiator 2.

[0036] As shown in Figure 2 and Figure 5 As shown, the sealing ring 1 includes a first sealing flange 5 and a second sealing flange 6. The first sealing flange 5 is in contact with the side wall of the radiator 2, and the second sealing flange 6 is inserted into the lamp housing mounting groove 7 and is in contact with the groove wall of the lamp housing mounting groove 7. The sealing ring 1 is provided with a fold 8 between the first sealing flange 5 and the second sealing flange 6. The fold 8 provides a margin for the three-dimensional deformation of the sealing ring 1, dynamically compensates the displacement between the radiator 2 and the lamp housing 3, and improves the durability of the sealing ring 1 at the same time.

[0037] In order to enable the second sealing flange 6 to be inserted into the lamp housing mounting groove 7, the thickness of the second sealing flange 6 is set to be smaller than the width of the lamp housing mounting groove 7. This structure is used to enable the second sealing flange 6 to be inserted into the lamp housing mounting groove 7.

[0038] As shown in Figure 6 and Figure 7 As shown, in some preferred embodiments, the first sealing flange 5 and the second sealing flange 6 are provided with convex teeth 9 on their surfaces, and the distance from the convex tip of the second sealing flange 6 to the bottom of the second sealing flange 6 is greater than that of the lamp housing mounting groove 7. Since the second sealing flange 6 is a flexible structure, by applying pressure, the second sealing flange 6 can be inserted into the lamp housing mounting groove 7. When the pressure disappears, the second sealing flange 6 is naturally reset under the influence of elastic potential energy, so that its wave peaks and wave valleys abut against the groove wall of the lamp housing mounting groove 7, realizing interference fit, and at the same time playing a role in enhancing the sealing performance and connection strength.

[0039] Among them, the ratio of the width of the lamp housing mounting groove 7 to the thickness of the second sealing flange 6 is between 1:1.2 and 1:1.5.

[0040] The present application provides a sealing structure between a movably connected lamp housing 3 and a radiator 2. A sealing ring 1 connects the lamp housing 3 and the radiator 2 simultaneously and applies a seal to the gap between the lamp housing 3 and the radiator 2. Based on the need for dimming, the radiator 2 fixedly connected to the light-emitting and dimming structure in the vehicle lamp rotates relative to the lamp housing 3, and the sealing ring 1 deforms flexibly, adapting to the deformation through three-dimensional deformation so as to maintain the seal.

[0041] The direction in which the sealing ring 1 is arranged to be inserted into the lamp housing mounting groove 7 of the lamp housing 3 is perpendicular to the direction of the elastic force of the sealing ring 1, so that when the radiator 2 moves relative to the lamp housing 3, the sealing ring 1 is not likely to come off, and the reliability is higher.

[0042] See Figure 4 As shown, a vehicle lamp includes a sealing connection structure for an exposed movable radiator 2 and a lamp housing 3 for a vehicle lamp as described above. The lamp housing 3 is provided with an axial groove 11, and the radiator 2 is provided with a rotating shaft 10. The rotating shaft 10 is inserted into the axial groove 11, and the rotating shaft 10 is rotatably connected to the axial groove 11. The movable connection between the radiator 2 and the lamp housing 3 is realized by the rotational connection of the rotating shaft 10 and the axial groove 11. Among them, a plurality of fitting parts are fixedly connected to the radiator 2, and the center of gravity of the radiator 2 and the fitting parts is located on the axis of the rotating shaft 10. This structure can eliminate the rotational inertia generated by the rotation of the radiator 2 and the fitting parts thereon during the dimming process and improve the optical path stability of the lamp. A dimming structure 14 is fixedly connected to the lamp housing 3, and the dimming structure 14 is connected to the radiator 2 to drive the radiator 2 to rotate relative to the lamp housing 3.

[0043] In order to avoid the movable radiator 2, wire outlet openings 12 and one-way air valves 13 are respectively provided in the upper and lower parts of the lamp housing 3.

[0044] The above-described embodiments are only preferred solutions of the present utility model and do not impose any form of limitation on the present utility model. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A sealing connection structure of an exposed movable radiator and a lamp housing for a vehicle lamp, characterized in that, The sealing ring, the radiator and the lamp shell are connected movably, the sealing ring is of flexible structure, and the sealing ring is connected with the radiator and the lamp shell in a sealing mode respectively.

2. A sealing structure for the exposed movable heat sink and the lamp housing of a vehicle lamp according to claim 1, wherein The sealing ring comprises a first sealing flange and a second sealing flange, the first sealing flange is attached to the side wall of the radiator, and the second sealing flange is attached to the groove wall of the lamp shell mounting groove.

3. A sealing connection structure for an exposed movable heat sink and a lamp housing of a vehicle lamp according to claim 2, characterized in that The sealing ring is provided with a wrinkle between the first sealing flange and the second sealing flange.

4. A sealing structure for the exposed movable heat sink and the lamp housing of a vehicle lamp according to claim 2, characterized in that, The radiator is provided with a protruding limiting flange, and the two ends of the first sealing flange are attached to the side wall of the limiting flange respectively.

5. A sealing connection structure for an exposed movable heat sink and a lamp housing of a vehicle lamp according to claim 2, characterized in that The thickness of the second sealing flange is smaller than the width of the lamp shell mounting groove.

6. A sealed connection structure of an exposed movable heat sink and a lamp housing for a vehicle lamp according to claim 5, characterized in that, The first sealing flange and the second sealing flange are provided with protruding teeth on the surface, and the distance from the protruding tip of the second sealing flange to the bottom of the second sealing flange is greater than the lamp shell mounting groove.

7. A sealed connection structure of an exposed movable heat sink and a lamp housing for a vehicle lamp according to claim 6, characterized in that, The ratio of the width of the lamp shell mounting groove to the thickness of the second sealing flange is between 1:1.2 and 1:1.

5.

8. A vehicle lamp characterized by comprising: The sealing connection structure for the exposed movable radiator and the lamp shell of the vehicle lamp comprises the sealing connection structure for the exposed movable radiator and the lamp shell of the vehicle lamp according to any one of claims 1 to 7, the lamp shell is provided with a shaft groove, the radiator is provided with a rotating shaft, the rotating shaft is inserted into the shaft groove, and the rotating shaft and the shaft groove are connected in a rotating mode.

9. A vehicle lamp according to claim 8, characterized in that The radiator is fixedly connected with a plurality of matching parts, and the gravity centers of the radiator and the matching parts are located on the axis of the rotating shaft.

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