CN201954307U

CN201954307U - LED (light-emitting diode) lighting device

Info

Publication number: CN201954307U
Application number: CN2010206751590U
Authority: CN
Inventors: 陈晓东; 牛焕东
Original assignee: Wah Wang Optoelectronics Shenzhen Co ltd
Current assignee: Wah Wang Optoelectronics Shenzhen Co ltd
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2011-08-31
Anticipated expiration: 2020-12-21

Abstract

The utility model relates to an LED (light-emitting diode) lighting device, which comprises a plurality of LED groups formed by serial connection of a plurality of LEDs with the power being 6-8W. The LED groups are connected in parallel. Since the LED lighting device is formed by more serial connections and fewer parallel connections of the low-power LEDs, the drive current and heat transfer rates of the LEDs can be reduced greatly, the heat generated by the LEDs during working can be decreased, the light efficiency can be increased, and the service life of the LEDs can be prolonged.

Description

A kind of LED lighting device

Technical field

The utility model relates to a kind of LED lighting device.

Background technology

Fig. 1 shows the schematic diagram of high-power LED illuminating device of the prior art.As shown in Figure 1, high-power LED illuminating device of the prior art mainly adopts high-power LED chip, and reaches highlighted illumination by the connection in series-parallel of single or small number chip.Yet a large amount of heats that produce when great power LED is luminous need distribute by heat radiation machine plate, could guarantee the Chang Faguang that ends of light source.The drive current of these great power LEDs is all bigger, such as the drive current of the single-chip great power LED of 1W needs 350mA, therefore, when the LED lighting device is worked, the heat energy that the electric current of LED is big more, thermal conversion rate wherein is high more, produce is many more, temperature is also high more, and is high more to related elements, base material requires like this, damage is also just big more, and the service life that can reduce LED.

Summary of the invention

The purpose of this utility model provides a kind of LED lighting device little, that light efficiency is high, the life-span is long that generates heat.

For solving the problems of the technologies described above, the utility model is taked following technical scheme: a kind of LED lighting device, comprise a plurality of power that are cascaded LED that LED constitutes between 6W-8W group, and be in parallel between described a plurality of LED groups.

Further, the number of described LED group is the 8-12 group.

Further, the number of described LED group is 10 groups.

Further, comprise 8-12 LED in described each LED group.

Further, comprise 10 LED in described each LED group.

Because the utility model constructs described LED lighting device with low power LED by many series connection, few method in parallel, therefore can reduce drive current and the thermal conversion rate of LED greatly, thereby reduce the heat that LED work produces, and the service life that can improve light efficiency and LED.

Description of drawings

Fig. 1 is the schematic diagram of LED lighting device of the prior art.

Fig. 2 is the schematic diagram of the LED lighting device in the utility model.

The specific embodiment

Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated.

Fig. 2 shows the schematic diagram of the described LED lighting device in the utility model.As shown in Figure 2, described LED lighting device comprises series, parallel many groups LED together, and the power of described LED is between 6W-8W, and the number of every group of LED that is cascaded is 8-12, preferably 10; Total 8-12 group, preferably 10 groups, the LED of described series connection is connected in parallel.

In the prior art, power need drive with 700mA electric current, 12V voltage for the 6W high-power LED illuminating device, the design of its drive circuit is very complicated, the chip that is adopted is the high-power chip that needs high current drives, and the caloric value of chip is very high under the driving of high electric current, and entire product is temperature Gao Keda more than 70 ℃ very when work, heat energy conversion is bigger simultaneously, usually, the luminous flux of the high-power LED illuminating device of 6W is about 400LM, and light efficiency is 50ALM/W; The life-span of the electronic devices and components of working under hot conditions can shorten, thereby causes the reliability of power supply circuits lower.

During described LED lighting device in adopting the utility model, adopt the high-power LED illuminating device of the integrated 6W of forming of a plurality of small-power chips, at this moment, can under 200mA electric current, 35V voltage, drive use, therefore its drive circuit wants simple a lot of relatively, thereby can improve the reliability of power supply circuits; In addition, be low-power LED owing to what adopt, so its caloric value is very low, the temperature of entire product when work is about 40 ℃, and the luminous flux of the LED lighting device in the utility model is about 500LM, light efficiency 70LM/W.

Claims

1. a LED lighting device comprises a plurality of power that are cascaded LED that LED constitutes between 6W-8W group, is in parallel between described a plurality of LED groups.

2. LED lighting device as claimed in claim 1 is characterized in that: the number of described LED group is the 8-12 group.

3. LED lighting device as claimed in claim 1 is characterized in that: the number of described LED group is 10 groups.

4. as each described LED lighting device of claim 1-3, it is characterized in that: comprise 8-12 LED in described each LED group.

5. as each described LED lighting device of claim 1-3, it is characterized in that: comprise 10 LED in described each LED group.