CN207350217U - A kind of automotive LED headlamp and automobile lamp assembly - Google Patents

Abstract

The utility model discloses a kind of automotive LED headlamp and automobile lamp assembly, for solving the problems, such as automotive LED headlamp light distribution and heat dissipation.The automotive LED headlamp includes housing, and the housing outer rim is equipped with the ventilation hole arranged in a ring；LED module；Reflector, the light sent for reflecting the LED module, the reflector are connected with the housing；Substrate, the substrate are connected with the reflector, and the LED module is installed on the substrate；And heat sink, the heat sink are arranged at the housing, for radiating to the housing.The automotive LED headlamp light distribution is good and good heat dissipation effect.

Description

A kind of LED automobile headlamp and automobile light assembly

technical field

The utility model relates to the field of automobile lamps, in particular to an LED automobile headlamp and an automobile lamp assembly.

Background technique

Automobile lighting needs to meet certain conditions. Automobile lights are various traffic lights installed on automobiles to ensure safe driving. Automobile headlights are divided into two types: lighting lamps and signal lamps.

Car headlights are a kind of car lights, also known as car headlights. As the eyes of a car, it is not only related to the external image of a car owner, but also closely related to driving at night or driving safely under bad weather conditions. The main purpose of car headlights is to illuminate the road and objects in front of the car to ensure driving safety. It is also possible to use high beam and low beam alternately as a signal for overtaking at night. The headlights are installed on both sides of the head of the car, and each car is equipped with 2 or 4. The bulb power is 45-60W for high beam and 25-55W for low beam. The aforementioned automobile headlights in the prior art do not have the light distribution required for automobile road lighting, and there are also problems in heat dissipation, while the technology of quasi-LED automobile lighting lamps is immature.

Utility model content

In view of this, in order to solve the problem of light distribution and heat dissipation of automobile headlights in the prior art, the utility model provides an LED automobile headlight. The light distribution design of the LED automobile headlight adopts LED modules to be mounted on the substrate The light is formed through the reflective bowl, and the heat is dissipated through the ventilation holes and cooling fins on the housing.

Below is the content of the utility model:

On the one hand, the utility model provides an LED automobile headlight, which includes a housing, and the outer edge of the housing is provided with circularly arranged ventilation holes, and further includes:

LED module;

A reflective bowl, used to reflect the light emitted by the LED module, the reflective bowl is connected to the housing;

a substrate, the substrate is connected to the reflective bowl, and the LED module is mounted on the substrate; and

A cooling fin, the cooling fin is arranged on the casing, and is used for dissipating heat to the casing. The LED automobile headlamp adopts the LED module as the light source, which can meet the light intensity required for lighting, and can also play a role in energy saving. The LED module is mounted on the substrate, and the heat of the LED module is conducted to the reflective bowl through the substrate. The heat sink, and then dissipate the heat through the shell and the heat sink. The outer edge of the shell is provided with circularly arranged ventilation holes. The shell is not sealed in the car light assembly, and the ventilation holes can be in direct contact with the external environment. , During the driving process of the car, the natural wind can pass through the ventilation holes to enhance heat convection and heat dissipation. The LED car headlight solves the balance problem of standard light distribution and heat dissipation, and can be used as a standard LED car headlight.

Further, it also includes a wind pressure sensing device arranged on the outer edge of the casing, and the wind pressure sensing device is electrically connected to the LED module. The wind pressure sensing device is equivalent to an automatic switch device, which is arranged near the ventilation hole and can sense the wind pressure to adjust the power of the LED module. For example, when the wind pressure is low, the power of the LED module can be reduced. Specifically, Using 1/2 light-emitting chip of the LED module to reduce the calorific value of the heat source and play the role of over-temperature protection.

Further, both the reflective bowl and the substrate are made of metal. On the one hand, the metal reflective bowl can meet the needs of reflected light, and it can be made of aluminum, copper, etc., and its reflective surface can be made into a mirror; on the other hand, the metal reflective bowl has a good heat dissipation effect. The substrate is made of metal, which has good heat conduction and heat dissipation effects. At the same time, the base plate and reflective bowl can be welded.

Further, the housing is provided with a connecting portion. The connecting part is used for installation and connection. The connecting part is a mounting structure, and its function is to assemble the light emitting unit into the car light assembly, and to adjust the position of the light up, down, left and right. The connecting portion can be an ear plate with any shape and different assembly positions.

Further, LED signal lights arranged in a ring are fixed around the outer edge of the reflective bowl. The LED signal lamp can be an LED lamp bead or an LED lamp strip.

Further, the substrate is provided with a temperature measuring device. The temperature measuring device cooperates with the adapter control circuit to protect the LED module from overheating. Specifically: when the temperature sensed by the temperature measuring device is about to exceed the safe working temperature of the LED module, the power of the LED module can be adjusted through the control circuit in the power adapter. Therefore, the temperature measuring device can ensure the long-term stable and reliable operation of the LED automobile headlight within the allowable temperature range, thereby ensuring the safety of the automobile.

Further, the LED modules are arranged on both sides of the substrate. For example, a low-beam LED module and a high-beam LED module can be respectively arranged on both sides of the substrate. For example, a dimming baffle is set on the low-beam LED module, which can form a cut-off line of light and dark in cooperation with the reflective bowl.

Further, the reflective bowl is divided into a first part and a second part, and the surfaces of the first part and the second part are both multi-curved. The LED modules are arranged on both sides of the substrate, wherein the first part, for example, may be an upper part, which is used to reflect the low beam LED module and form a low beam light source. Wherein the second part, for example, can be the lower part, which is used to reflect the high beam LED module, and can form a high beam light source.

Further, the heat dissipation fins are spiral. The spiral heat sink increases the effective heat dissipation area of the heat sink, and the heat dissipation effect is better.

On the other hand, the utility model also provides an automobile lamp assembly, which includes a casing and the aforementioned LED automobile headlight, the LED automobile headlight has strong luminous intensity, standard light distribution, good heat dissipation, and good Install.

Compared with the prior art, the utility model has the beneficial effect that: the LED automobile headlamp uses a plurality of LED modules as light sources for standard light pattern design, and the LED modules can have high power and high luminous intensity. At the same time, it generates a lot of heat and is very concentrated. Therefore, the organic combination of LED car headlights uses three heat dissipation methods at the same time: the working heat of the LED module is transmitted to the reflective bowl and the housing through the substrate, and a heat sink is arranged on the housing for heat radiation; and the ventilation hole Guide the air to the heat sink of the shell for strong air cooling. Therefore, through the comprehensive design of heat dissipation and light distribution, the LED car headlight can be used as a standard car light: strong luminous light, standard light distribution, good heat dissipation, and easy installation.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings used in the implementation manner will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model or The embodiment, therefore, should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

FIG. 1 shows a schematic cross-sectional structure diagram of an LED automobile headlamp.

FIG. 2 shows a schematic diagram of a partially enlarged structure at point A in FIG. 1 .

FIG. 3 shows a schematic diagram of a partially enlarged structure at B in FIG. 1 .

Fig. 4 shows another schematic cross-sectional structural diagram of an LED automobile headlamp.

Fig. 5 shows a schematic structural diagram of a first viewing angle of an LED automobile headlight.

Fig. 6 shows a schematic structural diagram of a second viewing angle of an LED automobile headlamp.

Fig. 7 shows a structural schematic diagram of a third viewing angle of an LED automobile headlight.

Fig. 8 shows a schematic structural diagram of a fourth viewing angle of an LED automobile headlamp.

Fig. 9 shows another structural schematic view of the fourth viewing angle of the LED automobile headlamp.

Explanation of main figures and symbols:

100-LED car headlights;

101-shell; 1011-ventilation hole; 1012-connection; 102-LED module; 10211-hollow tube; 103-reflective bowl; 1031-LED lamp bead; Wind pressure sensing device.

Detailed ways

In order to facilitate the understanding of the present invention, the LED automobile headlamp and the automobile light assembly will be described more comprehensively below with reference to the relevant drawings. The accompanying drawings show the embodiments of the LED automobile headlamp and the automobile lamp assembly, however, the LED automobile headlamp and the automobile lamp assembly can be realized in different forms, and are not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of LED automobile headlamp and automobile lamp assembly more thorough and comprehensive.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples" or "some examples" mean specific features described in connection with the embodiment or example, A structure, material, or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection", "connection", "connection" and "communication" should be understood in a broad sense, for example, it may be mechanical Connection or electrical connection may also be the internal communication between two elements, either directly or indirectly through an intermediary. Those skilled in the art can understand the specific meanings of the above terms according to specific situations.

As shown in Figures 1 to 5, the LED automobile headlamp 100 of the present utility model includes:

The casing 101, the outer edge of the casing 101 is provided with circularly arranged ventilation holes 1011,

LED module 102;

A reflective bowl 103, used to reflect the light emitted by the LED module 102, the reflective bowl 103 is connected to the housing 101;

a substrate 105, the substrate 105 is connected to the reflective bowl 103, and the LED module 102 is mounted on the substrate 105; and

The cooling fins 107 are shaped or attached to the housing 101 for dissipating heat from the housing 101 .

The LED automobile headlamp 100 uses an LED module 102 as a light source, and a high-power LED module 102 can be selected, which can meet the light intensity required for lighting, and can also play a role in energy saving, and the LED module 102 is attached to the substrate. 105 , the heat of the LED module is transferred to the housing 101 through the substrate 105 and the reflective bowl 103 , the housing 101 is provided with a heat sink 107 , and the edge of the housing 101 is provided with ventilation holes 1011 for improving the heat dissipation effect of the heat sink 107 . Specifically, when wind passes through the ventilation hole 1011, the heat convection on the surface of the heat sink 107 can be accelerated, thereby achieving a good heat dissipation effect. When the car is running, the ventilation hole 1011 has convection, which accelerates the heat dissipation of the heat sink 107 and the housing 101 , and greatly improves the heat dissipation effect of the LED automobile headlamp 100 .

Example 1

In this embodiment, the LED module 102 and the substrate 105 will be illustrated in detail.

The LED module 102 is a product formed by arranging LEDs (light-emitting diodes) according to certain rules and then packaging them together, and adding some waterproof treatment, that is, an LED module. The LED module 102 in the present utility model includes an LED light-emitting chip and a corresponding integrated circuit, and the LED module 102 is mounted on the substrate 105 by bonding. Specifically, as shown in FIGS. 6 and 7 , the LED modules 102 are disposed on both sides of the substrate 105 .

In order to meet the requirements of the LED automobile headlamp 100 for low beam and high beam, LED modules 102 can be arranged on both sides of the substrate, and cooperate with the power adapter circuit to realize the function of alternately changing the high and low beams. In order to achieve low-beam standard light type, as shown in FIG. 7 , two sets of LED modules 102 can be arranged on the same side of the substrate 105 .

The substrate 105 in the utility model plays the role of fixing the LED module 102 , and it can be attached and installed with the LED module 102 . In this way, the substrate 105 is detachably connected to the reflective bowl 103 and the LED module 102 . It is easy to understand that, when the substrate 105 is made of metal, it can be welded with the reflective bowl.

It should be noted that, in order to ensure that the wires required by the LED module 102 can be connected to the adapter behind the housing 101, a hollow tube 10211 can be provided. The hollow tube 10211 passes through the housing 101, the reflective bowl 103, and penetrates into In the substrate 105, one end of the hollow tube 10211 protrudes from the housing 101, and the other end goes deep into the substrate 105, so that the LED module 102 and the temperature measuring device 1021 on the substrate 105 can lead the wires out of the housing 101, so that the power supply adapter connection.

The substrate 105 of the present invention is provided with a dimming baffle 108 for cooperating with the reflective bowl 103 to form a near light and dark cut-off line.

Example 2

In this embodiment, the reflective bowl 103 and the casing 101 will be illustrated in detail.

The reflective bowl 103 in the present invention is used to reflect and focus light, and the reflective bowl 103 is connected with the housing 101 . The connection between the reflective bowl 103 and the housing 101 is a sealed connection, specifically, the reflective bowl 103 is tightly connected to the edge of the housing 101 , and this sealed connection can be connected through a first sealing ring.

In addition, as shown in FIG. 4 , the reflective bowl 103 and the casing 101 can be integrally formed and connected. At this time, there is no hollow structure between the reflective bowl 103 and the casing 101 .

The periphery of the reflective bowl 103 in the present utility model is provided with LED lamp beads 1031, and the LED lamp beads 1031 are used as signal lamps.

It should be noted that the reflective bowl 103 and the housing 101 may be connected by fasteners, such as screw connection, or glue connection. In a specific embodiment, the edge of the housing 101 and the edge of the reflective bowl 103 are provided with a first sealing ring and connected together by glue.

Reflective bowl 103 of the present utility model is made of metal, such as can adopt aluminum, copper etc., and this metal reflective bowl can guarantee the needs of reflected light, and it can adopt aluminum, copper etc. to make, and its reflective surface can be made mirror surface; On the one hand, the metal reflective bowl has a good heat dissipation effect.

It should be noted that when the LED modules 102 are arranged on both sides of the substrate 105 , the reflective bowl 103 is divided into a first part and a second part. In this case, the surfaces of the first part and the second part are both multi-curved surfaces. Wherein the first part, for example, may be an upper part for installing a low beam LED module, which may form a low beam light source. Wherein the second part, for example, can be the lower part, which is used to install the high beam LED module, which can form a high beam light source.

As shown in FIG. 1 and FIG. 5 , the heat sink 107 on the casing 101 is used to dissipate heat for the LED automobile headlamp 100 , and the heat sink 107 mainly utilizes heat radiation to dissipate heat outward. Therefore, the shape and material of the heat sink 107 have a great influence on the heat dissipation effect of the heat sink 107 .

Specifically, the heat sink 107 can be a plurality of fins, and the fins can have a good heat dissipation effect. The cooling fins 107 can be configured as spiral fins. The spiral fins increase the heat dissipation area of the fins, and the heat dissipation effect is good. The heat sink 107 is a fin-shaped heat dissipation component made of thin material. After the heat sink 107 absorbs the heat, it dissipates the heat in the form of convection. In the process of convection heat dissipation, the heat dissipation area is mainly determined by the surface area of the heat sink 107. The larger the surface area, the better the heat dissipation effect; the smaller the surface area, the better the heat dissipation effect. The worse the cooling effect. In heat dissipation devices using fins, the commonly used methods mainly include: increasing the number of heat dissipation fins and increasing the length of heat dissipation fins. One of the data reflected is the "thickness ratio", that is, the thickness and height of the fins. The smaller the value, the denser the fins per unit volume can be made, the larger the number, the larger the effective heat dissipation surface area, and the better the heat dissipation performance.

The above-mentioned heat sink 107 may use a heat dissipation material with good heat dissipation effect.

As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , and FIG. 5 , vent holes 1011 are provided on the edge of the casing 101 of the present invention to improve the heat dissipation effect of the heat sink 107 . Specifically, when wind passes through the ventilation hole 1011, the heat convection on the surface of the heat sink 107 can be accelerated, thereby achieving a good heat dissipation effect. When the car is running, the ventilation hole 1011 has convection, which accelerates the heat dissipation of the heat sink 107 and the housing 101 , and greatly improves the heat dissipation effect of the LED automobile headlamp 100 .

As shown in FIG. 8 and FIG. 9 , the connecting portion 1012 can be an ear plate with any shape and different assembly positions. The connecting part 1012 is used for installation and connection. The connecting part 1012 is a mounting structure, and its function is to assemble the LED automobile headlight 100 into the car light assembly, and it can be moved up, down, left and right. Adjust the light position. The connecting portion 1012 can be an ear plate of any shape.

Preferably, the ear plate also has an indication function, for example, in Figure 8, the upper button is pointed and the lower button is blunt, forming an arrow shape, which is intended to indicate the upper and lower installation positions to prevent inversion

The wind pressure sensing device 113 in the utility model is electrically connected with the LED module 102 . The wind pressure sensing device 113 is equivalent to an automatic switch device, which is arranged near the ventilation hole 1011, and can sense the size of the wind pressure to adjust the power of the LED module 102. For example, when the wind pressure is small, the power of the LED module 102 can be reduced. Power, specifically, use 1/2 of the light-emitting chip of the LED module to reduce the calorific value of the heat source and play the role of over-temperature protection.

Example 3

In this embodiment, a car light assembly will be described in detail with an example.

The automobile lamp assembly in the utility model includes an LED automobile headlamp 100 and a housing, and the LED automobile headlamp 100 is connected with the housing.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed by the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A LED automobile headlight, comprising a housing, is characterized in that the outer edge of the housing is provided with ventilation holes arranged in a ring, and also includes: LED module; A reflective bowl, used to reflect the light emitted by the LED module, the reflective bowl is connected to the housing; a substrate, the substrate is connected to the reflective bowl, and the LED module is mounted on the substrate; and A cooling fin, the cooling fin is arranged on the casing, and is used for dissipating heat to the casing. 2 . The LED automobile headlamp according to claim 1 , further comprising a wind pressure sensing device disposed on the outer edge of the housing, and the wind pressure sensing device is electrically connected to the LED module. 3 . 3. The LED automobile headlamp according to claim 1, wherein both the reflective bowl and the substrate are made of metal. 4. The LED automobile headlamp according to claim 1, wherein the housing is provided with a connecting portion. 5 . The LED automobile headlamp according to claim 1 , wherein LED signal lights arranged in a ring are fixed around the outer edge of the reflective bowl. 6 . 6. The LED automobile headlamp according to claim 1, wherein the substrate is provided with a temperature measuring device. 7. The LED automobile headlamp according to claim 1, wherein the LED modules are arranged on both sides of the substrate. 8. The LED automobile headlamp according to claim 1, wherein the reflective bowl is divided into a first part and a second part, and the surfaces of the first part and the second part are both multi-curved surfaces. 9. The LED automobile headlamp as claimed in claim 1, wherein the heat sink is in a spiral shape. 10. An automobile light assembly, characterized by comprising a housing and the LED automobile headlamp according to any one of claims 1-9, the housing being connected to the LED automobile headlamp.