Car lamp module based on synthetic jet flow and car

Abstract

The utility model provides a car lamp module based on synthetic jet flow and a car. The car lamp module comprises a fixing support, a synthetic jet flow assembly, a radiator, a light source PCBA board, a lens support and a module lens. The synthetic jet assembly, the radiator and the light source PCBA board are installed on the lens support through the fixing support. The light source PCBA board is fixed between the lens support and the radiator. The synthetic jet assembly is fixed between the radiator and the fixed bracket; the module lens is fixed on the lens bracket; the synthetic jet assembly comprises a vibration compression cavity and a vibration diaphragm; the vibrating diaphragm is arranged in the vibrating compression cavity and can vibrate; air suction holes and air exhaust holes are formed in the positions, corresponding to fin gaps of the radiator, of the vibration compression cavity. The airflow heat efficiency of the synthetic jet flow assembly is higher than that of traditional air cooling, heat transfer from a heat source to air is more effective through pulsating flow, and therefore a good cooling effect can be achieved with less air.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of car light, specifically, a car light module and car based on synthetic jet, especially a car light module heat dissipation structure based on synthetic jet technology. BACKGROUND

[0002] With the continuous development of new energy and new forces of making cars, the use of various high-power modules is also more and more widely, and more typical modules have MicroLED module, DLP module, etc., and the function can reach more than 50W. At present, the heat dissipation mode of this type basically adopts air cooling mode, and the power consumption is high, the heat dissipation efficiency is low, the radiator volume is large, and the motor noise is high.

[0003] The patent document with the publication number CN211399628U discloses a double-radiation-fan LED front-illuminating car light structure, which mainly comprises a micro turbine fan, an LED front-illuminating lamp body assembly, a lamp holder seat, and an axial flow fan main component. The micro turbine fan is fixedly connected to the front end of the LED front-illuminating lamp body assembly, the LED light source is fixedly connected to the middle part of the LED front-illuminating lamp body, the lamp holder seat is fixedly connected to the rear part of the LED front-illuminating lamp body, and the axial flow fan is fixedly connected to the radiator at the rear end of the LED front-illuminating lamp body assembly. Different lamp holder seats can be replaced to be suitable for installation of different vehicle models. However, the patent document still has the defects of large radiator volume and high motor noise. UTILITY MODEL CONTENT

[0004] In view of the defects in the prior art, the utility model aims to provide a car light module and car based on synthetic jet.

[0005] According to the utility model, a car light module based on synthetic jet is provided, which comprises a fixing support, a synthetic jet assembly, a radiator, a light source PCBA board, a lens support, and a module lens.

[0006] The synthetic jet assembly, the radiator, and the light source PCBA board are installed on the lens support through the fixing support; the light source PCBA board is fixed between the lens support and the radiator; the synthetic jet assembly is fixed between the radiator and the fixing support; and the module lens is fixed to the lens support.

[0007] The synthetic jet assembly comprises a vibration compression cavity and a vibration diaphragm; the vibration diaphragm is arranged in the vibration compression cavity and can vibrate; and an air exhaust / inhale hole is arranged at a position corresponding to the fin gap of the radiator on the vibration compression cavity.

[0008] Preferably, when the vibration diaphragm vibrates in the vibration compression cavity:

[0009] The air in the vibration compression cavity can be ejected through the air exhaust / suction hole to take away the heat generated by the fins of the radiator.

[0010] The surrounding cold air can enter into the vibration compression cavity through the air exhaust / suction hole.

[0011] Preferably, the synthetic jet module further comprises a vibrating diaphragm driving plate.

[0012] The vibrating diaphragm driving plate is electrically connected with the vibrating diaphragm for adjusting the vibration frequency and vibration amplitude of the vibrating diaphragm.

[0013] Preferably, the vehicle lamp module further comprises a connector.

[0014] The connector is mounted on the lens support through the fixing support, and the ECU control unit of the vehicle lamp is electrically connected with the vibrating diaphragm driving plate through the connector.

[0015] Preferably, the vibrating diaphragm is fixed on the bottom of the vibration compression cavity, and the vibrating diaphragm control plate is fixed on the side of the vibration compression cavity.

[0016] Preferably, the vibrating diaphragm comprises a vibrating diaphragm, a voice coil and two magnets.

[0017] The vibrating diaphragm is connected with the voice coil, and the vibrating diaphragm and the voice coil are located between the two magnets.

[0018] When the current passes through the voice coil, the voice coil is vibrated under the action of the magnetic field and drives the vibrating diaphragm to vibrate.

[0019] Preferably, the light source PCBA board is provided with a light source and a control circuit, the light source is electrically connected with the control circuit, and the control circuit is electrically connected with the ECU control unit of the vehicle lamp.

[0020] Preferably, the light source PCBA board is provided with a temperature sensor, and the temperature sensor is electrically connected with the ECU control unit of the vehicle lamp.

[0021] Preferably, the module lens is fixed on the lens support through a screw.

[0022] The utility model also provides a vehicle comprising the vehicle lamp module based on synthetic jet.

[0023] Compared with the prior art, the utility model has the beneficial effects that:

[0024] 1. The utility model discloses a vibration diaphragm is arranged in the vibration compression cavity, and through the vibration of different directions of vibration diaphragm, makes vibration compression cavity produce exhaust and inhale action, exhausts through air exhaust hole, and air exhaust hole is aligned radiator, and further can blow away the heat of radiator, inhales through air suction hole, and further can inhale the cold air of surrounding, provides air for next exhaust, so repeatedly, realizes good cooling effect.

[0025] 2. The utility model discloses a vibration diaphragm is by vibration diaphragm, voice coil and magnet composition, and the voice coil generates magnetic field after the current is passed, and the magnetic field of magnet interacts, makes voice coil vibrate, and voice coil drives vibration diaphragm to vibrate, and the vibration frequency and amplitude of voice coil are related with the current that it is passed, therefore, through the adjustment current, can adjust the vibration frequency and amplitude of vibration diaphragm, and further realizes different heat dissipation demand. DRAWINGS

[0026] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0027] Figure 1 It is the explosion schematic view of the vehicle lamp module based on synthetic jet;

[0028] Figure 2 It is the synthetic jet principle schematic diagram;

[0029] Figure 3 It is the cross section schematic diagram of synthetic jet actual object.

[0030] In the drawing, it is shown that:

[0031] Connector 1 radiator 7

[0032] Fixing support 2 light source PCBA board 8

[0033] Vibration compression cavity 3 lens support 9

[0034] Vibration diaphragm drive plate 4 module lens 10

[0035] Vibration diaphragm 5

[0036] Air suction hole 6 DETAILED DESCRIPTION

[0037] The utility model will be explained in detail below in combination with specific embodiment. The following embodiments will help the person skilled in the art further understand the utility model, but do not limit the utility model in any form. It should be pointed out that, for ordinary skilled in the art, on the premise of not departing from the utility model concept, can also make a number of changes and improvements. These all belong to the protection scope of the utility model.

[0038] Example 1

[0039] As shown in Figures 1 to 3 , the embodiment provides a synthetic jet-based vehicle lamp module, comprising: a fixing support 2, a synthetic jet assembly, a radiator 7, a light source PCBA board 8, a lens support 9 and a module lens 10; the synthetic jet assembly, the radiator 7 and the light source PCBA board 8 are installed on the lens support 9 through the fixing support 2; the light source PCBA board 8 is fixed between the lens support 9 and the radiator 7; the synthetic jet assembly is fixed between the radiator 7 and the fixing support 2; the module lens 10 is fixed to the lens support 9; the synthetic jet assembly comprises: a vibration compression cavity 3 and a vibration diaphragm 5; the vibration diaphragm 5 is arranged in the vibration compression cavity 3 and can vibrate; the vibration compression cavity 3 is provided with an air exhaust / suction hole 6 at a position corresponding to a fin gap of the radiator 7. The module lens 10 is fixed on the lens support 9 by screws. As shown in Figure 1 , A is the synthetic jet assembly.

[0040] The synthetic jet assembly further comprises: a vibration diaphragm driving board 4; the vibration diaphragm driving board 4 is electrically connected with the vibration diaphragm 5, for adjusting the vibration frequency and vibration amplitude of the vibration diaphragm 5. The vehicle lamp module further comprises: a connector 1; the connector 1 is installed on the lens support 9 through the fixing support 2, and the ECU control unit of the vehicle lamp is electrically connected with the vibration diaphragm driving board 4 through the connector 1. The vibration diaphragm 5 is fixed at the bottom of the vibration compression cavity 3, and the vibration diaphragm control board 4 is fixed at the side of the vibration compression cavity 3.

[0041] When the vibration diaphragm 5 vibrates in the vibration compression cavity 3: the air in the vibration compression cavity 3 can be ejected through the air exhaust / suction hole 6, taking away the heat generated by the fins of the radiator 7; the surrounding cold air can enter the vibration compression cavity 3 through the air exhaust / suction hole 6. The vibration diaphragm 5 comprises: a vibrating diaphragm, a voice coil and two magnets; the vibrating diaphragm is connected with the voice coil, and the vibrating diaphragm and the voice coil are located between the two magnets; when the current passes through the voice coil, the voice coil is subjected to the action of the magnetic field to vibrate, and drives the vibrating diaphragm to vibrate.

[0042] The light source PCBA board 8 is provided with a light source and a control circuit, the light source is electrically connected with the control circuit, and the control circuit is electrically connected with the ECU control unit of the vehicle lamp. The light source PCBA board 8 is arranged with a temperature sensor, and the temperature sensor is electrically connected with the ECU control unit of the vehicle lamp.

[0043] The embodiment also provides a vehicle comprising the synthetic jet-based vehicle lamp module.

[0044] Example 2

[0045] Those skilled in the art can understand the embodiment as a more specific description of embodiment 1.

[0046] The embodiment provides a vehicle lamp module heat dissipation structure based on a synthetic jet technology.

[0047] The vehicle lamp ECU controls power supply and sends control instructions to the diaphragm driving plate 4 in the synthetic jet heat dissipation system through the connector 1; after receiving the instructions, the diaphragm driving plate 4 controls the diaphragm 5 to vibrate at a certain frequency and amplitude, the diaphragm moves in the vibration compression cavity 3, the air in the cavity is ejected from the air exhaust / inhale hole 6 and acts on the fins of the heat sink 7, thereby taking away the heat around the fins. At the same time, the surrounding cold air enters the vibration compression cavity 3 from the air inhale hole, so as to prepare for the next air exhaust, thereby repeating the work to dissipate heat. The fixing support 2 fixes the connector 1, the synthetic jet system and the light source PCBA plate 8 to the lens support 9; the light source PCBA plate 8 is directly fixed between the heat sink 7 and the lens support 9; the module lens 10 is fixed to the lens support 9 in a screwing mode, thereby forming a complete module heat dissipation system.

[0048] The connector 1 is a bridge for controlling the synthetic jet heat dissipation system by the ECU, provides power supply for the diaphragm driver, sends the diaphragm control signal frequency, current and the like, and simultaneously collects the temperature parameters of the synthetic jet heat dissipation system.

[0049] The fixing support 2 fixes the connector 1, the synthetic jet system and the light source PCBA plate 8 to the lens support 9, and plays a fixing role.

[0050] The vibration compression cavity 3 is composed of a sealed cavity, a series of air exhaust / inhale holes 6 are distributed on the surface of the cavity, and the holes are just aligned with the fin gap of the heat sink 7. The diaphragm 5 is fixed at the bottom of the vibration compression cavity 3, and the diaphragm control plate 4 is fixed at the side of the cavity.

[0051] The diaphragm driving plate 4 receives the relevant control signals of the ECU, controls the current size and frequency speed acting on the diaphragm 5 through the corresponding hardware circuit, so as to drive the diaphragm 5 to work.

[0052] The diaphragm 5 is a component for converting the electric signal into mechanical vibration and compressing and absorbing the gas in the synthetic jet heat dissipation system. It is an important part of the synthetic jet heat dissipation system. The diaphragm is installed between a pair of magnets and connected with the voice coil. When the current passes through the voice coil, it will be affected by the magnetic field and start to move. With the change of the driving current and the driving frequency signal, the voice coil and the diaphragm will also move at a corresponding frequency and amplitude, so that the air in the cavity is compressed and rarefied.

[0053] The heat sink 7, when the light source PCBA plate 8 works, the LED group or the light source will inevitably generate a large amount of heat, which can be transferred from the heat source to the environment through the heat sink.

[0054] The light source PCBA board 8, on which the light source and control circuit required by the light emitting module are arranged, generates a large amount of heat, and the PCBA is fixed on the heat sink 7 through heat dissipation glue; at the same time, the temperature sensor arranged on the light source PCBA board 10 can indirectly obtain the temperature of the heat sink and feed back to the ECU through the connector 1. The ECU adjusts the control parameters to the diaphragm driving board 4 in real time according to the feedback temperature, so as to form a closed loop of temperature precise control.

[0055] The lens support 9 is used for fixing the optical module lens, and can ensure that the light source on the light source PCBA board and the module lens 10 are accurately matched in size;

[0056] The module lens 10 is an optical device installed in front of the light source PCBA board 8, and is used for adjusting and controlling the emission direction and distribution of light. The scattered light emitted by the LED light source can be concentrated into a beam, so that higher brightness and longer irradiation distance can be achieved.

[0057] As shown in Figure 2 and Figure 3 , A is a diaphragm, B is a nozzle, C is a compression chamber, D is a vortex air bomb, E is a fresh cold air flow, F is a synthetic jet air flow, G is a heat sink, and H is hot air.

[0058] The principle of synthetic jet technology is that a diaphragm similar to a loudspeaker element vibrates the air in the compression chamber at a certain frequency. After the air is compressed, it is sprayed at high speed from a small nozzle, forming an air bomb that sprays towards the heat sink. The air bomb drives the air around the heat sink to flow and take away heat. At the same time, the fresh cold air flow around the nozzle enters the compression chamber through the nozzle, preparing for the next compression of the chamber.

[0059] The working principle of the diaphragm is that there is a coil in the control system which is located in a fixed magnetic field and connected to the diaphragm. When alternating current passes through the coil, according to Faraday's law of electromagnetic induction, an electric current is generated in the conductor, which interacts with the fixed magnetic field. According to Lorentz's law, charged particles will be subjected to force under the action of a changing magnetic field, which leads to the movement of the coil. The coil is connected to the diaphragm, which transmits the force to the diaphragm. With the vibration of the coil, the diaphragm also vibrates, so that the air in the chamber is compressed and thinned.

[0060] At the same time, the amplitude and frequency of the diaphragm are determined by the size and frequency of the current passing through the coil. By controlling the current, the diaphragm vibration can be accurately controlled. This provides the possibility of low noise and controllable heat dissipation for the embodiment.

[0061] Further, the whole lamp ECU drives the diaphragm to work according to certain amplitude and frequency according to the heat condition of the module (temperature sensor can be arranged on the module to collect data by the ECU).

[0062] Further, the diaphragm works in the sealed cavity, air is compressed and sprayed out from the small nozzle at high speed to form air bullets sprayed to the radiating fins through the air inlet vent.

[0063] Further, the air bullets drive the hot air around the radiator to flow through the air outlet vent to discharge the hot air around the radiator and suck in fresh cold air.

[0064] Further, the diaphragm can work according to the actual heat condition of the module according to the set control amplitude and frequency and can be accurately controlled by the ECU.

[0065] Further, the ECU can collect the heat data of the module in real time and dynamically adjust the control amplitude and frequency of the diaphragm to finally dynamically stabilize the temperature of the module in the controllable temperature range.

[0066] The airflow thermal efficiency of the synthetic jet assembly of the embodiment is higher than that of the traditional air cooling, and the pulsating flow makes the heat transfer from the heat source to the air more effective, so that better cooling effect can be obtained by using less air.

[0067] Since the synthetic jet assembly generates airflow with high thermal efficiency, the required air flow is reduced. Lower flow rate means less sound and less noise. In addition, since it does not have any bearing, brush or other friction parts, the synthetic jet assembly eliminates the noise problem related to the interface. The diaphragm of the synthetic jet cooling module vibrates at a frequency that is not sensitive to the human ear, and the noise is very small, even almost imperceptible, and the noise is less than 25db.

[0068] The synthetic jet cooling module of the embodiment has lower fan heat dissipation power consumption than the fan, and the main energy consumption part of the cooling module is a driving module, the diaphragm, which has lower power consumption than the motor part of the fan, and the power is less than 1W. In addition, the vibration amplitude can be accurately controlled according to the system fan heat demand, and energy is saved.

[0069] The embodiment has small size and light weight, and due to the special structure of the synthetic jet cooling module, it can be used in some lamp bodies where fans cannot be installed.

[0070] The airflow thermal efficiency of the synthetic jet assembly of the utility model is higher than that of the traditional air cooling, and the pulsating flow makes the heat transfer from the heat source to the air more effective, so that better cooling effect can be obtained by using less air.

[0071] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0072] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A synthetic jet based vehicle lamp module, characterized in that, The vehicle lamp module comprises a fixing support (2), a synthetic jet assembly, a heat sink (7), a light source PCBA board (8), a lens support (9) and a module lens (10). The synthetic jet assembly, the heat sink (7) and the light source PCBA board (8) are mounted on the lens support (9) through the fixing support (2); the light source PCBA board (8) is fixed between the lens support (9) and the heat sink (7); the synthetic jet assembly is fixed between the heat sink (7) and the fixing support (2). The module lens (10) is fixed to the lens support (9). The synthetic jet assembly comprises a vibration compression cavity (3) and a vibration diaphragm (5); the vibration diaphragm (5) is arranged in the vibration compression cavity (3) and can vibrate; the vibration compression cavity (3) is provided with an air exhaust / inhale hole (6) at a position corresponding to a fin gap of the heat sink (7). When the vibration diaphragm (5) vibrates in the vibration compression cavity (3):

2. The synthetic jet based vehicle lamp module of claim 1, wherein, The air in the vibration compression cavity (3) can be ejected through the air exhaust / inhale hole (6) to take away the heat generated by the fins of the heat sink (7); The surrounding cold air can enter the vibration compression cavity (3) through the air exhaust / inhale hole (6). The synthetic jet assembly further comprises a vibration diaphragm driving plate (4).

3. The synthetic jet based vehicle lamp module of claim 1, wherein, The vibration diaphragm driving plate (4) is electrically connected with the vibration diaphragm (5) and is used for adjusting the vibration frequency and vibration amplitude of the vibration diaphragm (5). The vehicle lamp module further comprises a connector (1).

4. The synthetic jet based vehicle lamp module of claim 3, wherein, The connector (1) is mounted on the lens support (9) through the fixing support (2), and the ECU control unit of the vehicle lamp is electrically connected with the vibration diaphragm driving plate (4) through the connector (1). The vibration diaphragm (5) is fixed at the bottom of the vibration compression cavity (3), and the vibration diaphragm driving plate (4) is fixed at the side of the vibration compression cavity (3).

5. The synthetic jet based vehicle lamp module of claim 3, wherein, The vibration diaphragm (5) comprises a vibrating diaphragm, a voice coil and two magnets.

6. The synthetic jet based vehicle lamp module of claim 1, wherein, The vibrating diaphragm is connected with the voice coil, and the vibrating diaphragm and the voice coil are located between the two magnets. When the current passes through the voice coil, the voice coil is vibrated by the magnetic field and drives the vibrating diaphragm to vibrate. The light source PCBA board (8) is provided with a light source and a control circuit, the light source is electrically connected with the control circuit, and the control circuit is electrically connected with the ECU control unit of the vehicle lamp.

7. The synthetic jet based vehicle lamp module of claim 1, wherein, The light source PCBA board (8) is arranged with a temperature sensor, and the temperature sensor is electrically connected with the ECU control unit of the vehicle lamp.

8. The synthetic jet based vehicle lamp module of claim 1, wherein, The module lens (10) is fixed on the lens support (9) through a screw.

9. The synthetic jet based vehicle lamp module of claim 1, wherein, The vehicle lamp module based on the synthetic jet comprises any one of claims 1 to 9.

10. A vehicle characterized by comprising: ​

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