CN106937434A - Led car lamp device - Google Patents

Abstract

The LED car lamp device comprises a light-emitting circuit unit and a switch unit, wherein the light-emitting circuit unit comprises a plurality of LEDs which are sequentially connected in series and can be electrified to emit light, the switch unit comprises at least one switch component, the switch component is electrically connected with the at least one LED in parallel, and all the LEDs connected with the switch component in parallel can stop emitting light when the switch component is started. Through the electric connection circuit design of the light-emitting circuit unit and the switch unit, the whole LED car lamp device can be driven by a single driver, and whether the LED connected in parallel with the switch assembly emits light can be controlled conveniently by operating the switch assembly to be closed and opened.

Description

LED car light device

technical field

The invention relates to a vehicle light device, in particular to an LED vehicle light device.

Background technique

With the continuous improvement of LED luminous efficiency, LED has been widely used in vehicle lights, such as headlights, tail lights, brake lights or daytime running lights. The current design of LED car lights is to design an LED car light circuit for various car lights, for example, to set up an LED car light circuit for headlights and small lights.

At present, the circuit design of LED car lights is either to set multiple LEDs in parallel or to set multiple LEDs in series. The currents of the LEDs connected in parallel are not the same, resulting in uneven brightness of the LEDs connected in parallel. Although the series setting method can make the brightness of the LED uniform, but as long as a single LED is damaged, the entire car light will not light up, and because each LED car light circuit is independent, so a driver must be set for each car light. Lamps are expensive.

Contents of the invention

The object of the present invention is to provide an LED vehicle light device that can be driven to emit light by a single driver and can be adjusted and controlled to emit light brightness conveniently.

Another object of the present invention is to provide an LED vehicle light device that can be driven to emit light by a single driver and can be used to manufacture various types of vehicle lights.

The LED vehicle light device of the present invention includes a light emitting circuit unit and a switch unit, the light emitting circuit unit includes a plurality of LEDs that are sequentially connected in series and can be energized to emit light, the switch unit includes at least one switch assembly, and the switch assembly is compatible with At least one LED is electrically connected to the light-emitting circuit unit in parallel, and when the switch component is controlled to switch to a closed state, all the LEDs connected in parallel to the switch component can stop emitting light.

In the LED lamp device of the present invention, the switch unit includes a plurality of switch assemblies, the switch assemblies are electrically connected to the power-generating circuit unit in parallel, and are respectively connected in parallel with at least one LED, and each switch assembly is connected in parallel The number of LEDs is different. When one of the switch components is controlled to switch to the closed state, the switch unit can stop all the LEDs connected in parallel with the switch component in the closed state to stop emitting light.

According to the LED vehicle light device of the present invention, the switch unit is connected in parallel with the light-emitting circuit unit, and includes a plurality of switch components connected in series in sequence and connected in parallel with at least one LED respectively, and the switch components are connected in parallel with different LEDs respectively When one of the switch components is controlled to switch to the closed state, the switch unit can stop all the LEDs connected in parallel with the switch component in the closed state to stop emitting light.

According to the LED vehicle light device of the present invention, the light-emitting circuit unit has a positive terminal and a negative terminal, and the LED vehicle light device also includes an electrical connection to the positive terminal and the negative terminal, and can drive the LED to emit light. driver.

The beneficial effects of the present invention are: through the design of the electrical connection circuit between the light emitting circuit unit and the switch unit, in addition to being driven by a single driver, the switch component can also be conveniently controlled by operating the closing and opening of the switch component Whether the LEDs connected in parallel emit light can be applied to a single car light or multiple car lights. It is a very convenient and practical LED car light device.

Description of drawings

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein:

Fig. 1 is a circuit diagram of a first embodiment of the LED lamp device of the present invention;

Fig. 2 is a circuit diagram of another implementation aspect of the first embodiment; and

Fig. 3 is a circuit diagram of a second embodiment of the LED lamp device of the present invention.

detailed description

Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same numerals.

As shown in Figure 1, the first embodiment of the LED car light device of the present invention is suitable for making a car light or a variety of car lights, for example, as a headlight 901 alone, or as a headlight 901, a small The functions of lamp 902 and daytime running lamp 903 may be made to have the functions of tail lamp and brake lamp, and it is convenient to adjust the luminous brightness and whether it is turned on or not as required. The LED vehicle light device includes a light emitting circuit unit 3 , a switch unit 4 electrically connected to the light emitting circuit unit 3 , and a driver 5 electrically connected to the light emitting circuit unit 3 and capable of driving the light emitting circuit unit 3 to emit light.

The light emitting circuit unit 3 includes a plurality of LEDs 31 connected in series, and has a positive terminal 32 and a negative terminal 33 , and the driver 5 is electrically connected to the positive terminal 32 and the negative terminal 33 .

The switch unit 4 includes a plurality of switch assemblies 41 electrically connected to the light-emitting circuit unit 3 in parallel, one end of the switch assembly 41 is electrically connected to the negative end 33 of the light-emitting circuit unit 3, and the other end is respectively It is electrically connected between two LEDs 31 in series, and is connected in parallel with at least one LED 31 respectively, and the number of LEDs 31 connected in parallel to each switch assembly 41 is different. The switch assemblies 41 can be respectively controlled to switch between a closed state and an open state. When one of the switch assemblies 41 is controlled to switch to the closed state, the driver 5 is applied to the light emitting circuit unit 3 The current will flow through the switch assembly 41 in the closed state, so that all the LEDs 31 connected in parallel with the switch assembly 41 in the closed state will be powered off and stop emitting light.

In this embodiment, the light emitting circuit unit 3 is provided with six LEDs 31 in series, the switch unit 4 includes two switch components 41, and the switch components 41 are respectively used for parallel connection to the three LEDs 31 adjacent to the negative terminal 33, and five LEDs 31 adjacent to the negative terminal 33 .

When the LED vehicle light device of the present invention is implemented, the light-emitting circuit unit 3 can be arranged in a lamp housing to form a single vehicle light, and the switch unit 4 can be integrated into a vehicle light controller (not shown in the figure) , the switch assembly 41 can be controlled to switch between the closed state and the open state by operating the lamp controller, and then the number of LEDs 31 to be illuminated by the light-emitting circuit unit 3 can be selected and controlled, and the brightness of the lamp can be relatively controlled.

In addition, during implementation, the light-emitting circuit unit 3 can also be arranged in a plurality of lamp housings (not shown in the figure) to form a variety of vehicle lights, for example, arranged in the lamp housings of the daytime running lamp 903, the small lamp 902 and the headlight 901. That is to say, part of the LED 31 of the light-emitting circuit unit 3 is used for the daytime running light 903, part of the LED 31 is used for the small light 902, and part of the LED 31 is used for the headlight 901, and the switch unit 4 is integrated into the car light The controller is convenient to operate and control the switch assembly 41 to switch between the closed state and the open state through the vehicle light controller, and then select and control the vehicle lights to be turned on and off.

Hereinafter, the application of the light emitting circuit unit 3 arranged in a plurality of lamp housings as daytime running lights 903 , small lights 902 and headlights 901 as examples will be described.

The light emitting circuit unit 3 is provided with six LEDs 31 in series, wherein one LED 31 adjacent to the positive terminal 32 is used as a daytime running light 903, and three LEDs 31 adjacent to the negative terminal 33 are used as a headlight 901, The remaining two LEDs 31 are used as small lamps 902 . The switch assembly 41 is respectively connected in parallel to the LED 31 used as the headlight 901 and to the LEDs 31 used as the small lamp 902 and the headlight 901 .

In normal state, the switch assembly 41 is in the closed state. When the vehicle is started, the LED 31 used as the daytime running light 903 will be activated by the driver 5 to emit light. When the small light 902 needs to be turned on, the switch assembly 41 connected in parallel to the five LEDs 31 can be switched to the open circuit state. At this time, the LED 31 used as the daytime running light 903 and the LED 31 used as the small light 902 will both be turned on. Lighting is activated by this driver 5 . When the headlight 901 is to be further activated, the switch assembly 41 connected in parallel to the LED 31 as the headlight 901 can be switched to the open circuit state. At this time, the current applied to the light-emitting circuit unit 3 by the driver 5 will flow through all LED 31, so that daytime running lights 903, small lights 902 and headlights 901 are all started to emit light.

With reference to FIG. 2 , in the above embodiment, the lighting circuit unit 3 has six LEDs 31 connected in series, and the switch unit 4 has two switch assemblies 41 , but during implementation, the number of LED31 and switch assemblies 41, and the number of switch assemblies 41 The number of LEDs 31 connected in parallel is not limited to the above-mentioned types, and can be increased or decreased according to usage requirements. For example, the structural design shown in FIG. 2 can also be adopted. The switch unit 4 is provided with five switch assemblies 41, and the switch assemblies 41 are designed as They are respectively connected in parallel with one, two, three, four and five LEDs 31 .

Through the above design, the entire light-emitting circuit unit 3 only needs to be driven by one driver 5 to emit light, and because the LED 31 is arranged in series, the luminosity of the LED 31 can be made uniform, and it is convenient to select the LED 31 to be turned on through the switch unit 4. And it is convenient to select and control the brightness, or select to control the opening and closing of a plurality of car lights made by the light-emitting circuit unit 3. Even if one of the LEDs 31 is damaged, it can be switched to the closed position by controlling the switch assembly 41 connected in parallel with it. state, the entire circuit bypasses the damaged LED 31, and the remaining LEDs 31 can still emit light normally, which can greatly reduce the probability of the entire group of car lights not being lit due to a single LED 31 being damaged. It is a very convenient and practical method. LED car light device design.

As shown in FIG. 3 , the difference between the second embodiment of the LED lamp device of the present invention and the first embodiment lies in the structural design that the switch unit 4 is electrically connected to the light emitting circuit unit 3 . For the convenience of description, only the differences between this embodiment and the first embodiment will be described below.

In this embodiment, the switch unit 4 is connected in parallel with the light-emitting circuit unit 3, that is, in parallel with the LED 31. The switch unit 4 includes a plurality of switch assemblies 41 connected in series in sequence, and the switch assemblies 41 are respectively connected to one The LEDs 31 are connected in parallel, and are connected in parallel with different LEDs 31 respectively, that is to say, the LEDs 31 connected in parallel by the switch assembly 41 are not repeated.

In this embodiment, the light emitting circuit unit 3 has six LEDs 31 connected in series, and the switch unit 4 has six switch components 41 connected in series, each switch component 41 is connected in parallel with one LED 31, but During implementation, the number of LEDs 31 and switch components 41 can be increased or decreased as required, not limited to the above, and the number of LEDs 31 connected in parallel to the switch component 41 is not limited to one.

Through the design of the light-emitting circuit unit 3 and the switch unit 4, the LED 31 can also be connected in series to make the LED 31 have a uniform brightness, and it is convenient to select the LED 31 to be turned on or off by separately controlling the closing and opening of the switching unit 41. LED31. Therefore, when the LED car light device of this embodiment is used to make a single car light, it can be used to control the brightness of the car light; when the LED car light device is used to make a plurality of single car lights, It can be used to separately control the brightness and turn on and off of the car lights, and also only needs a single driver 5 to drive the entire light emitting circuit unit 3, which is quite convenient and practical.

To sum up, through the design of the series structure of multiple LEDs 31 of the light emitting circuit unit 3 and the electrical connection arrangement of the switch assembly 41 of the switch unit 4 electrically connected to the light emitting circuit unit 3, in addition to a single driver 5 In addition to driving, it is also convenient to switch between the closed state and the open state by operating the switch assembly 41 to separately control whether the LED 31 connected in parallel with the switch assembly 41 emits light. When the present invention is used to make a single car light, It can be used to control the brightness of the car light. When used for multiple car lights, the brightness and opening and closing of the car lights can be controlled separately. It is a very convenient and practical innovative LED car light device design. Therefore, the object of the present invention can be achieved indeed.

The above are only embodiments of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the claims of the present invention and the contents of the description still belong to the present invention. range.

Claims (4)

1. An LED car light device, comprising a light-emitting circuit unit, the light-emitting circuit unit includes a plurality of LEDs that are sequentially connected in series and can be energized to emit light, it is characterized in that: the LED car light device also includes a light-emitting The switch unit of the circuit unit, the switch unit includes at least one switch component, the switch component is electrically connected to the light emitting circuit unit in parallel with at least one LED, and can make the switch component switch to a closed state when the switch component is controlled to switch to a closed state. All LEDs in parallel with the switch assembly stop emitting light. 2. The LED vehicle light device according to claim 1, wherein the switch unit comprises a plurality of switch assemblies, the switch assemblies are electrically connected to the power-emitting circuit unit in parallel with each other, and are connected in parallel with at least one LED respectively. The number of LEDs connected in parallel to each switch assembly is different, and the switch unit can stop all the LEDs connected in parallel to the switch assembly in the closed state when one of the switch assemblies is controlled to switch to the closed state. 3. The LED vehicle light device according to claim 1, wherein the switch unit is connected in parallel to the light emitting circuit unit, and includes a plurality of switch components connected in series in series and connected in parallel with at least one LED respectively, and the switch unit The components are respectively connected in parallel with different LEDs, and the switch unit can stop all the LEDs connected in parallel with the switch component in the closed state when one of the switch components is controlled to switch to the closed state. 4. The LED vehicle light device according to claim 1, 2 or 3, characterized in that: the light-emitting circuit unit has a positive terminal and a negative terminal, and the LED vehicle light device further comprises a The negative terminal, and the driver that can drive the LED to emit light.