JP3216694U - LED headlight unit - Google Patents

Abstract

Provided is an LED headlight unit having an external controller, which is capable of shortening wiring and preventing the wiring from getting in the way of a bond. An LED lamp 11 and a controller 12 are electrically connected only by an electric cable 13 having a length of 4 cm, and a controller 12 and a power plug 14 are electrically connected by a power cord 15 having a length of 1 cm. Thereby, although it is LED headlight unit 10 which has external type controller 12, the shortening of the wiring used compared with the conventional product can be aimed at. As a result, this wiring does not get in the way in a bonned with various devices. [Selection] Figure 1

Description

  The present invention relates to an LED headlight unit, and more particularly to an LED headlight unit for a vehicle using a light emitting diode (LED) as a light source.

In recent years, LED lamps have been widely used as light sources for automobile headlights. The LED lamp has a feature that it has a long service life since it is a cold light source that has high brightness and energy saving and hardly contains heat rays, compared to a halogen lamp or a xenon lamp.
Such an LED lamp may be commercially available as an LED headlight unit in which an LED lamp, an external controller, and a power plug (power connector), for example, are set as in Patent Document 1. .
Among these, the LED lamp and the controller were electrically connected by an electric cable having a length of 20 cm or more with a waterproof connector arranged on the way. Further, the controller and the power plug were electrically connected by a power cord having a length of 10 cm or more. The power supply of the LED lamp is secured by connecting a power plug to a power connector near the lamp housing that houses the LED lamp.

Japanese Patent Laying-Open No. 2015-85921

  However, in the LED headlight unit of Patent Document 1, the LED lamp and the controller are thus connected by an electric cable with a waterproof connector with a length of 20 cm or more, and both the controller and the power plug have a power cord with a length of 10 cm or more. Was connected by. Therefore, in the bonnet (engine room) where various devices such as an engine, a radiator, and an air conditioner are densely packed, these long wirings are in the way.

  Therefore, as a result of diligent research, the inventor has electrically connected the LED lamp and the controller only by an electric cable having a length of 2 cm to 10 cm in the LED headlight unit having an external controller, and the controller and the power source. It has been found that the above-mentioned problems can be solved if the connector is electrically connected with a power cord of 0.5 cm to 5 cm in length, and the present invention has been completed.

  That is, although this device is an LED headlight unit having an external controller, the wiring used can be shortened as compared with the conventional product. It aims at providing the LED headlight unit which does not get in the way.

  According to the first aspect of the present invention, an LED head in which an LED lamp and a controller are directly electrically connected by an electric cable, and the controller and a power connector are directly electrically connected by a power cord. In the light unit, the length of the electric cable is 2 cm to 10 cm, and the length of the power cord is 0.5 cm to 5 cm.

The LED headlight unit is for a vehicle. The kind of vehicle here is not limited. For example, various automobiles and various motorcycles can be used.
The LED lamp is a headlight bulb using a light emitting diode (LED) as a light source.
As a kind of LED element, a cannonball type or a COB (chip on board) type can be adopted. In addition, an SMD (surface mount) type may be used.
As an LED lamp, for example, a pair of left and right LEDs, a heat transfer plate in which each LED is arranged on the front and back surfaces, a casing that stores them, a heat sink that diffuses the heat of each LED, and a cooling that is stored in the heat sink A thing provided with a fan can be adopted. Moreover, the thing which does not have a cooling fan may be used.
The controller here is of an external type not incorporated in the LED lamp. As the controller, for example, an IC digital LED driver with a built-in constant current and voltage passing circuit can be employed.

Here, “the LED lamp and the controller are directly electrically connected by an electric cable” means that, for example, various connectors do not exist in the middle of the electric cable.
The type of electric cable is arbitrary.
If the length of the electric cable is less than 2 cm, the lamp housing and the controller may come into contact when the LED headlight unit is set. Moreover, if it exceeds 10 cm, the whole wiring of an LED headlight unit will become long. The preferred length of the electric cable is 3 cm to 5 cm. With this length, the lamp housing and the controller are not in contact with each other, and the entire wiring is not lengthened.
Moreover, the kind of power connector is not limited. For example, various male power connectors (power plugs) or various female power connectors may be used.

Here, “the controller and the power connector are directly electrically connected by the power cord” means that there are no various connectors, for example, in the middle of the electrical cord.
The type of power cord is arbitrary.
When the length of the power cord is less than 0.5 cm, the degree of freedom of the power connector with respect to the controller is small. Moreover, if it exceeds 5 cm, the whole wiring of an LED headlight unit will become long. The preferred length of the power cord is 1 cm to 2 cm. With this length, the degree of freedom of the power connector with respect to the controller is large, and the entire wiring is not lengthened.

In particular, the invention according to claim 2 is the LED headlight unit according to claim 1, wherein the length of the electric cable is 3 cm to 5 cm and the length of the power cord is 1 cm to 2 cm.
The optimum length of the electric cable is around 4 cm, and the optimum length of the power cord is around 1 cm.

  According to the invention described in claim 1, the LED lamp and the controller are electrically connected only by an electric cable having a length of 2 cm to 10 cm, and the controller and the power connector are connected to a power cord having a length of 0.5 cm to 5 cm. Is electrically connected. Thereby, although it is an LED headlight unit which has an external type controller, compared with the conventional product, the wiring used can be shortened. As a result, this wiring does not get in the way in a bonned with various devices.

  In particular, according to the second aspect of the invention, since the length of the electric cable is 3 to 5 cm and the length of the power cord is 1 cm to 2 cm, the lamp housing and the controller do not come into contact with each other, and the power connector for the controller And the entire wiring of the LED headlight unit is not lengthened.

It is a top view of the LED headlight unit which concerns on Example 1 of this invention. It is a top view of the use condition of the LED headlight unit which concerns on Example 1 of this invention.

  Embodiments of the present invention will be specifically described below with reference to the drawings. Here, an LED headlight unit for automobiles is taken as an example.

  In FIG. 1, reference numeral 10 denotes an LED headlight unit according to Embodiment 1 of the present invention. In the LED headlight unit 10, an LED lamp 11 and a controller 12 are directly connected by an electric cable 13 and a controller 12. And a power plug (power connector) 14 are directly connected by a power cord 15.

Hereinafter, these components will be described in detail.
The LED lamp 11 includes a pair of left and right LEDs 16, a heat transfer plate 17, a casing 18 that houses them, a heat sink 19 that diffuses the heat of each LED 16, and a cooling fan (not shown). Each LED 16 is disposed on the left and right side surfaces of the heat transfer plate 17.

The casing 18 is a cylindrical body divided into left and right blocks having a pair of windows, and is externally fitted to the outsides of the LEDs 16 and the heat sink 19.
The heat sink 19 is configured as a large-diameter cylindrical container, and the distal end portion thereof is connected to the proximal end portion of the heat transfer plate 17. Thereby, the heat of each LED 16 transmitted from the heat transfer plate 17 is cooled by heat radiation. A cooling fan for cooling the heated heat sink 19 is accommodated in the internal space of the heat sink 19.

The controller 12 is an IC digital LED driver with a built-in constant current and voltage passing circuit.
The power plug 14 is of a waterproof type, and a socket covers a pair of electrodes.
The length of the electric cable 13 that electrically connects the LED lamp 11 and the controller 12 is 4 cm.
Furthermore, the length of the power cord 15 that electrically connects the controller 12 and the power plug 14 is set to 1 cm, which is a minimum necessary for allowing the power plug 14 to be bent freely with respect to the controller 12.

Next, with reference to FIG. 2, the usage method of the LED headlight unit 10 which concerns on Example 1 of this invention is demonstrated.
As shown in FIG. 2, when the LED headlight unit 10 according to the first embodiment is used, the bonnet (engine room) disposed at the front of the automobile is opened, and the LED lamp 11 is accommodated in the lamp housing 20. The power plug 14 is electrically connected to a female power connector 21 near 20.

As described above, the LED lamp 11 and the controller 12 are electrically connected only by the electric cable 13 having a length of 4 cm, and the controller 12 and the power plug 14 are electrically connected by the power cord 15 having a length of 1 cm. The LED headlight unit 10 having the external controller 12 is provided with a waterproof connector in the middle, and the wiring can be shortened as compared with a conventional product having a total length of 30 cm or more. .
As a result, the wiring of the LED headlight unit 10 does not get in the way in a hood where various devices such as an engine, a radiator, and an air conditioner are concentrated. Furthermore, since the length of the electric cable 13 is secured by 4 cm when the LED headlight unit 10 is assembled, there is little possibility that the lamp housing 20 and the controller 12 come into contact with each other and damage the lamp housing 20. Furthermore, since the length of the power cord 15 is secured by 1 cm, the degree of freedom of the power plug 14 can be sufficiently obtained when the power plug 14 is connected to the power connector 21 near the lamp housing 20.

  This device is useful as a technology of a vehicle LED headlight unit using a light emitting diode (LED) as a light source.

10 LED headlight unit,
11 LED lamp,
12 controller,
13 Electric cable,
14 power plug (power connector),
15 Power cord.

Claims (2)

In the LED headlight unit in which the LED lamp and the controller are directly electrically connected by an electric cable, and the controller and the power connector are directly electrically connected by a power cord.
An LED headlight unit in which the length of the electric cable is 2 cm to 10 cm and the length of the power cord is 0.5 cm to 5 cm.   The LED headlight unit according to claim 1, wherein a length of the electric cable is 3 cm to 5 cm, and a length of the power cord is 1 cm to 2 cm.

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