LED car lamp

Abstract

The utility model discloses an LED car lamp which comprises a lamp panel, a sintering tube and a cooling fan, LED lamp beads are arranged on the lamp panel, and the lamp panel is connected with the sintering tube. The sintering tube is connected with the heat dissipation seat, and the heat dissipation fan is installed on the heat dissipation seat; a temperature sensor is arranged on the lamp panel and used for detecting the temperature of the lamp panel, and the LED lamp beads, the temperature sensor and the cooling fan are electrically connected with a controller. According to the utility model, the temperature sensor and the controller are arranged, so that the LED automobile lamp has temperature detection and overheating protection functions, and the LED automobile lamp cannot be burnt out due to over-high temperature; according to the utility model, the sintering tube, the radiating seat and the radiating fan are arranged, and the radiating fins are also arranged on the radiating seat, so that the radiating capability is effectively improved. The LED lamp is further provided with a U-shaped condensing lens, the condensing lens is arranged on the lamp panel and the LED lamp beads in a sleeved mode, the condensing lens not only achieves sealing of the LED lamp beads, but also has a condensing effect, and light loss can be avoided in the condensing process.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to an LED automobile lamp. Background Art

[0002] With the rapid development of LED lighting technology, LED lights are gradually replacing traditional halogen and xenon lamps as the mainstream automotive lighting source due to their advantages such as energy saving, long life, high brightness, and fast response. However, LED lights generate a large amount of heat during operation. If heat is not dissipated in a timely and effective manner, the junction temperature of the LED chip will increase, affecting its luminous efficiency, lifespan, and reliability.

[0003] Some LED headlights on the market directly place the light-transmitting cover on the lamp head without a sintered tube, resulting in poor heat dissipation and failing to meet the heat dissipation requirements of LED headlights. Therefore, some have proposed new LED headlights with good heat dissipation. For example, the utility model patent with application number CN201820142990.6 proposes a new type of LED headlight, comprising a housing, a tower-shaped radiator installed in the housing, a cooling fan on one side of the tower-shaped radiator, and a sintered tube tightly connected to the other side of the tower-shaped radiator. The other end of the sintered tube is connected to a copper base plate, and high-power LED lamp beads are placed on the front and back surfaces of the copper base plate. The housing consists of two half shells and is provided with air convection slots. In this new type of LED headlight, the heat generated by the LED lamp beads is transferred to the tower-shaped radiator through the sintered tube, and the heat on the tower-shaped radiator is blown out of the housing by the cooling fan, thus achieving good heat dissipation.

[0004] The new LED headlight provided by the above patent effectively dissipates heat by setting up a sintered tube and a cooling fan. However, this new LED headlight does not have temperature detection and overheating protection functions. When the cooling fan fails, it will not be able to effectively dissipate heat, which will cause the LED headlight to burn out due to excessive temperature. Further improvement is needed. Utility Model Content

[0005] The purpose of the utility model is to provide an LED car lamp, aiming to solve the problem that the existing LED car lamps do not have temperature detection and overheating protection functions. When the cooling fan fails, it will not be able to effectively dissipate heat, which will cause the LED car lamp to burn out due to excessive temperature.

[0006] The utility model is implemented as follows: an LED car light includes a lamp board, a sintered tube and a cooling fan, wherein the lamp board is provided with LED lamp beads, and the lamp board is connected to the sintered tube; further comprising a heat sink, the sintered tube is connected to the heat sink, and the cooling fan is installed on the heat sink; the lamp board is provided with a temperature sensor, and the temperature sensor is used to detect the temperature of the lamp board, and the LED lamp beads, the temperature sensor and the cooling fan are electrically connected to a controller.

[0007] Furthermore, the heat dissipation fan is installed at one end of the heat dissipation base away from the LED lamp beads. The heat dissipation fan includes a driving motor and fan blades, and the fan blades are installed on the rotating shaft of the driving motor.

[0008] Furthermore, the heat dissipation fan also includes a protective cover, which is installed on the heat dissipation seat. The drive motor and fan blades are both located in the protective cover, and an air inlet grille is provided on one end of the protective cover away from the heat dissipation seat.

[0009] Furthermore, a mounting groove is provided at one end of the heat sink away from the LED lamp bead, a through hole is provided on the bottom wall of the mounting groove, the lamp board and the sintered tube pass through the through hole, and the tube wall of the sintered tube fits with the hole wall of the through hole.

[0010] Furthermore, the heat sink is cylindrical, the mounting groove is a cylindrical groove, and a plurality of heat dissipation fins are provided on the outside of the mounting groove along the circumferential direction of the mounting groove.

[0011] Furthermore, there is a heat dissipation gap between adjacent heat dissipation fins, and the exhaust air of the heat dissipation fan passes through the heat dissipation gap.

[0012] Furthermore, the outer port of the mounting groove is provided with a first wire groove, and the outer wall of the heat sink located at the outer port of the mounting groove is provided with a second wire groove, the first wire groove connects the second wire groove and the mounting groove, and the second wire groove connects to the outside of the heat sink.

[0013] Furthermore, the first wire ducts and the second wire ducts are provided in two or three groups, and the first wire ducts and the second wire ducts in each group are evenly arranged along the circumferential direction of the mounting groove.

[0014] Furthermore, it also includes a focusing lens with a U-shaped cross-section, which is mounted on the lamp board and the LED lamp beads, and is connected to the sintered tube and the heat sink.

[0015] Furthermore, a chuck is further included, which is sleeved on the heat sink and is used to fix the heat sink on the lamp cavity.

[0016] By providing a temperature sensor and controller, this utility model has temperature detection and overheat protection functions, preventing the LED headlights from burning out due to excessive temperatures. The utility model is equipped with a sintered tube, a heat sink, and a cooling fan. The heat sink is also equipped with cooling fins, effectively improving the heat dissipation capacity of the utility model. Furthermore, the utility model is equipped with a U-shaped focusing lens, which is mounted on the light board and LED lamp beads. The focusing lens not only seals the LED lamp beads but also provides a focusing effect. It also avoids light loss during the focusing process, effectively improving the lighting effect of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from an upward perspective;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the heat sink of the utility model at one end away from the LED lamp beads;

[0020] Figure 4 This is the electric control structure block diagram of the utility model. DETAILED DESCRIPTION

[0021] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0022] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0023] like Figure 1-Figure 3As shown, the utility model provides an LED car light, including a lamp board, a sintered tube 2, a cooling fan 3 and a heat sink 4. An LED lamp bead 1 is arranged on the lamp board, and the lamp board and the LED lamp bead 1 are both connected to the sintered tube 2, and the sintered tube 2 is connected to the heat sink 4. The heat generated by the LED lamp bead and other heating elements on the lamp board is transferred to the sintered tube 2, and the sintered tube 2 is transferred to the heat sink 4. The heat sink 4 is cylindrical, and an installation groove 401 is provided at one end of the heat sink 4 away from the LED lamp bead 1. The installation groove 401 is a cylindrical groove, and the cooling fan 3 is installed in the installation groove 401. The cooling fan 3 includes a driving motor, fan blades and a protective cover 8, and the fan blades are installed on the rotating shaft of the driving motor. The protective cover 8 is installed on the heat sink 4, and the driving motor and the fan blades are both located in the protective cover 8. An air inlet grille is provided on the end of the protective cover 8 away from the heat sink 4.

[0024] like Figure 3 As shown, the bottom wall of the mounting groove 401 is provided with a through-hole 402, through which the lamp panel and sintered tube 2 pass. The wall of the sintered tube 2 fits closely with the wall of the through-hole 402, increasing the contact area between the sintered tube 2 and the heat sink 4. This allows the sintered tube 2 to transfer heat to the heat sink 4 more quickly. A plurality of heat sink fins 5 are provided on the outside of the mounting groove 401 along the circumference of the mounting groove 401. There are heat dissipation gaps between adjacent heat sink fins 5. Exhaust air from the cooling fan 3 passes through the heat dissipation gaps, removing heat from the heat sink 5. The provision of the cooling fins 5 and the cooling fan 3 effectively enhances the heat dissipation capacity of the heat sink 4, thereby improving the heat dissipation capacity of the LED headlight.

[0025] like Figure 3 As shown, the outer end of the mounting groove 401 is provided with a first wire groove 403, and the outer wall of the heat sink 4 located at the outer end of the mounting groove 401 is provided with a second wire groove 404. The first wire groove 403 connects the second wire groove 404 and the mounting groove 401, and the second wire groove 404 connects to the outside of the heat sink 4. The connecting wires of the light board and the cooling fan 3 pass through the first wire groove 403 and the second wire groove 404, and are then electrically connected to the external control device and the external power supply. There are two or three sets of first wire grooves 403 and second wire grooves 404. Figure 3 There are two groups, and too many should not be provided, otherwise the arrangement of the heat sink 5 will be affected, thereby affecting the heat dissipation effect. Each group of first wire ducts 403 and second wire ducts 404 is evenly arranged along the circumference of the mounting groove 401. In this way, more appropriate first wire ducts 403 and second wire ducts 404 can be selected according to the actual installation and wiring conditions, effectively improving the installation applicability and flexibility of the utility model.

[0026] like Figure 1 and Figure 2As shown, the device further includes a U-shaped condenser lens 6, which is mounted over the lamp panel and LED lamp beads 1. The condenser lens 6 is connected to the sintered tube 2 and the heat sink 4. This structure of the condenser lens 6 not only seals the LED lamp beads 1 but also provides a focusing effect. This also prevents light loss during the focusing process, effectively improving the luminous effect of the present invention. Furthermore, this structure of the condenser lens 6 minimizes the impact on the heat dissipation of the sintered tube 2.

[0027] like Figure 1 and Figure 2 As shown, a chuck 7 is sleeved on the heat sink 4, and the chuck 7 is used to fix the heat sink 4 on the lamp cavity.

[0028] like Figure 4 As shown, in addition to the LED lamp beads 1, the lamp board is also equipped with a temperature sensor for detecting the lamp board temperature. The LED lamp beads 1, temperature sensor, and cooling fan 3 are electrically connected to a controller. The controller can be an MCU chip installed on the lamp board, or a separate controller. The controller includes a housing encapsulating a circuit board containing the MCU chip, control circuitry, and power supply circuitry. The separate controller is electrically connected to the LED lamp beads 1, temperature sensor, and cooling fan 3 via electrical wires. The temperature sensor transmits the lamp board temperature to the controller, which is configured with a fan activation temperature threshold and an alarm temperature threshold, with the activation temperature threshold being lower than the alarm temperature threshold. When the lamp board temperature is lower than the activation temperature threshold, the controller disables the cooling fan 3, thereby reducing energy consumption. When the lamp board temperature reaches the activation temperature threshold, the controller activates the cooling fan 3 for rapid heat dissipation. When the lamp board temperature reaches the alarm temperature threshold, indicating a lamp board failure or damage to the cooling fan 3, the controller shuts down the LED lamp beads 1 and transmits an alarm signal to the vehicle control system.

[0029] In summary, the present invention has temperature detection and overheating protection functions by providing a temperature sensor and a controller, so that the LED headlights will not burn out due to excessive temperature. The present invention is provided with a sintered tube 2, a heat sink 4 and a heat sink fan 3. The heat sink 4 is also provided with heat sink fins 5, which effectively improves the heat dissipation capacity of the present invention. In addition, the present invention is also provided with a U-shaped focusing lens 6, which is mounted on the lamp board and the LED lamp bead 1. The focusing lens 6 not only achieves the sealing of the LED lamp bead 1, but also has a focusing effect. In addition, light loss can be avoided during the focusing process, effectively improving the luminous effect of the present invention.

[0030] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An LED car light, comprising a light board, a sintered tube and a cooling fan, wherein the light board is provided with LED lamp beads, and the light board is connected to the sintered tube, characterized in that: It also includes a heat sink, the sintering tube is connected to the heat sink, and the heat dissipation fan is installed on the heat sink; a temperature sensor is provided on the lamp board, and the temperature sensor is used to detect the temperature of the lamp board; the LED lamp beads, temperature sensor and heat dissipation fan are electrically connected to a controller.

2. The LED vehicle lamp according to claim 1, characterized in that: The heat dissipation fan is installed at one end of the heat dissipation base away from the LED lamp beads. The heat dissipation fan includes a driving motor and fan blades, and the fan blades are installed on the rotating shaft of the driving motor.

3. The LED vehicle lamp according to claim 2, characterized in that: The heat dissipation fan further comprises a protective cover, which is mounted on the heat dissipation seat. The drive motor and the fan blades are both located in the protective cover. An air inlet grille is provided on one end of the protective cover away from the heat dissipation seat.

4. The LED vehicle lamp according to claim 1, characterized in that: The heat sink is provided with a mounting groove at one end away from the LED lamp bead, and a through hole is provided on the bottom wall of the mounting groove. The lamp board and the sintered tube pass through the through hole, and the tube wall of the sintered tube fits with the hole wall of the through hole.

5. The LED vehicle lamp according to claim 4, characterized in that: The heat sink is cylindrical, the mounting groove is a cylindrical groove, and a plurality of heat dissipation fins are arranged on the outside of the mounting groove along the circumferential direction of the mounting groove.

6. The LED vehicle lamp according to claim 5, characterized in that: There are heat dissipation gaps between adjacent heat dissipation fins, and the exhaust air of the heat dissipation fan passes through the heat dissipation gaps.

7. The LED vehicle lamp according to claim 5, characterized in that: The outer end of the mounting groove is provided with a first wire groove, and the outer wall of the heat sink located at the outer end of the mounting groove is provided with a second wire groove. The first wire groove connects the second wire groove and the mounting groove, and the second wire groove connects to the outside of the heat sink.

8. The LED vehicle lamp according to claim 7, characterized in that: The first wire ducts and the second wire ducts are provided in two or three groups, and the first wire ducts and the second wire ducts in each group are evenly arranged along the circumferential direction of the installation groove.

9. The LED vehicle lamp according to claim 1, characterized in that: It also includes a focusing lens with a U-shaped cross section. The focusing lens is sleeved on the lamp board and the LED lamp beads, and the focusing lens is connected to the sintering tube and the heat sink.

10. The LED vehicle lamp according to claim 1, characterized in that: It also includes a chuck, which is sleeved on the heat sink and is used to fix the heat sink on the lamp cavity.

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