Liquid cooling heat dissipation structure of car lamp shell
By circulating cold liquid inside the headlight housing, the problem of unsatisfactory heat dissipation in existing headlights has been solved, achieving efficient cooling and structural simplification, and improving the heat resistance and safety of the headlights.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUNCHI VEHICLE IND JIANGSU
- Filing Date
- 2025-05-17
- Publication Date
- 2026-04-24
AI Technical Summary
Existing vehicle lights have poor heat dissipation performance and complex structures, making it difficult to achieve efficient heat dissipation.
The system employs a liquid cooling structure, which circulates cold liquid within the headlight housing via a circulating pump and temperature control equipment. The heat dissipation process is controlled by a temperature sensor and a control circuit board, simplifying the structure.
It achieves efficient cooling inside the vehicle headlights, reduces the risk of heat damage, has a simple and compact structure, and is easy to install and use while being safe and reliable.
Smart Images
Figure CN224162476U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, and in particular to a liquid cooling heat dissipation structure for automotive headlight housings. Background Technology
[0002] In the existing technology, the Chinese utility model patent (publication number CN216047538U, patent name: a high-efficiency heat conduction radiator for LED vehicle lamp module) addresses the heat dissipation problem of vehicle lamps by using a rotating shaft. A screw cap and push rod drive a sliding plate and a horizontal plate to reciprocate left and right. During this reciprocating motion of the horizontal plate, gears and a vertical plate fixed by a support rod rotate counterclockwise and then clockwise. This oscillation of the vertical plate accelerates the flow of hot air inside the lamp, achieving better heat dissipation. However, this solution still relies on a fan and heat conduction for LED vehicle lamp heat dissipation, resulting in slow heat dissipation from the lamp's interior. Therefore, the heat dissipation effect is not ideal, and this design makes the vehicle lamp structure more complex. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a liquid-cooled heat dissipation structure for vehicle headlight housings.
[0004] The technical solution adopted in this utility model is as follows:
[0005] A liquid-cooled heat dissipation structure for a vehicle lamp housing includes a lamp housing, a lamp cover, a light source, a temperature sensor, a circulating pump, a temperature regulating device, a liquid replenishment tank, and a connecting pipe. The lamp cover is fixedly connected to the lamp housing. The lamp housing has a hollow structure with an inlet and an outlet. The outlet of the circulating pump is connected to the inlet of the hollow structure of the lamp housing via the connecting pipe. The temperature regulating device includes a liquid tank and a cooler. The liquid tank has an inlet, an outlet, and a replenishment port. The inlet of the circulating pump is connected to the outlet of the liquid tank of the temperature regulating device via the connecting pipe. The replenishment port is connected to the liquid replenishment tank via a liquid level control device. The outlet of the hollow structure of the lamp housing is connected to the inlet of the liquid tank of the temperature regulating device via the connecting pipe. The temperature sensor is installed on the liquid tank of the temperature regulating device. The light source and a control circuit board are installed in the rear middle part of the lamp housing. The temperature sensor, the temperature regulating device, and the circulating pump are electrically connected to the control circuit board.
[0006] This utility model relates to a liquid-cooled heat dissipation structure for vehicle lamp housings. It is scientifically designed, simple and compact in structure. By injecting cold liquid into the hollow lamp housing, the entire lamp is cooled, so that the plastic and electronic components inside the lamp operate in a low-temperature environment, reducing the risk of heat damage to the entire lamp. It is easy to implement, convenient to install and use, safe and reliable in function, and economical. Attached Figure Description
[0007] The accompanying drawings, which are provided to further understand this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.
[0008] Figure 1 This is a schematic diagram of the installation of the heating element in the liquid cooling heat dissipation structure of the vehicle headlight housing of this utility model;
[0009] Wherein: A-lamp housing; B-lamp cover; C-light source; D-control circuit board; E-temperature sensor; F-circuit pump; G-temperature control device; H-liquid replenishment tank; I-connecting pipe. Detailed Implementation
[0010] like Figure 1 As shown, this utility model includes a lamp housing A, a lamp shade B, a light source C, a control circuit board D, a temperature sensor E, a circulating pump F, a temperature control device G, a liquid replenishment tank H, and a connecting pipe I. The lamp shade B is fixedly connected to the lamp housing A. The lamp housing A has a hollow structure, with an inlet and an outlet. The outlet of the circulating pump F is connected to the inlet of the hollow structure of the lamp housing A via the connecting pipe I. The temperature control device G includes a liquid tank and a cooler. The cooler is used to cool the liquid in the liquid tank. The liquid tank has an inlet, an outlet, and a replenishment port. The inlet of the circulating pump F is connected to the outlet of the liquid tank of the temperature control device G via the connecting pipe I. The replenishment port is connected to the liquid replenishment tank H via a liquid level control device inside the liquid tank. The outlet of the hollow structure of the lamp housing A is connected to the inlet of the liquid tank of the temperature control device G via the connecting pipe I. The temperature sensor E is installed on the liquid tank of the temperature control device G. The light source C and the control circuit board D are installed in the rear part of the lamp housing A, and the temperature sensor E, the temperature adjustment device G and the circulation pump F are connected to the control circuit board D.
[0011] In use, this invention fills the hollow lamp housing A with cold liquid. When the headlight is on, the control circuit board D activates the temperature sensor E, the temperature regulating device G, and the circulation pump F. The circulation pump F then circulates the liquid into the hollow structure of the lamp housing A. When the circulation pump F operates, it draws in liquid through the connecting pipe I and pushes it out at high speed via the impeller and motor inside the pump, thus circulating the liquid. After circulating once in the lamp housing A, the liquid flows into the temperature regulating device G through the connecting pipe I. The temperature sensor E monitors the liquid temperature in the liquid tank of the temperature regulating device G. If the temperature is lower than the system setting, the cooler in the temperature regulating device G is reactivated for cooling; otherwise, the liquid directly enters the circulation pump F and is delivered to the hollow structure of the lamp housing A. When the headlight is off, the control circuit board D deactivates the temperature sensor E, the circulation pump F, and the temperature regulating device G.
[0012] The above description is only a general embodiment of this utility model. For those skilled in the art, there are various other embodiments with modifications and variations, which will not be elaborated here. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model are included within the protection scope claimed by this utility model.
Claims
1. A liquid-cooled heat dissipation structure for a vehicle lamp housing, comprising a lamp housing (A), a lamp cover (B), a light source (C), a temperature sensor (E), a circulation pump (F), a temperature control device (G), a liquid replenishment tank (H), and a connecting pipe (I), wherein the lamp cover (B) is fixedly connected to the lamp housing (A), the lamp housing (A) has a hollow structure, the hollow structure of the lamp housing (A) has an inlet and an outlet, the outlet of the circulation pump (F) is connected to the inlet of the hollow structure of the lamp housing (A) through the connecting pipe (I), the temperature control device (G) includes a liquid tank and a cooler, the liquid tank has an inlet, an outlet, and a cooler. The inlet of the circulating pump (F) is connected to the outlet of the liquid tank of the temperature control device (G) through a connecting pipe (I). The replenishment port is connected to the liquid replenishment tank (H) through a liquid level control device. The outlet of the hollow structure of the lamp housing (A) is connected to the inlet of the liquid tank of the temperature control device (G) through a connecting pipe (I). The temperature sensor (E) is installed on the liquid tank of the temperature control device (G). The light source (C) and the control circuit board (D) are installed in the rear part of the lamp housing (A). The temperature sensor (E), the temperature control device (G), and the circulating pump (F) are electrically connected to the control circuit board (D).