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LED driving device and illumination and fishing lamp using the same

A technology of light emitting diodes and driving devices, applied in the fields of fishing lights and lighting, can solve the problems of complicated switch control and complex switch control logic, etc.

Active Publication Date: 2018-06-05
NICHIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to this structure, although the lighting period of any light-emitting module can be designed and arranged, the control of the switch becomes complicated, and an effective and complicated switch control logic 177 is required.

Method used

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  • LED driving device and illumination and fishing lamp using the same
  • LED driving device and illumination and fishing lamp using the same
  • LED driving device and illumination and fishing lamp using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0040] figure 1 A block diagram of the light emitting diode driving device 100 according to Embodiment 1 of the present invention is shown. The light emitting diode driving device 100 shown in this figure includes: a first half-wave rectification circuit 51, a second half-wave rectification circuit 52, a first LED part 11, a second LED part 12, The first energization control unit 21, the second energization control unit 22, the fifth energization control unit 25, the sixth energization control unit 26, the first current control unit 31, the second current control unit 32, the first current detector 41, and The second current detector 42 .

[0041] The first half-wave rectification circuit 51 is a circuit connected to a single-phase AC power supply AP for half-wave rectifying the AC voltage of the AC power supply AP to obtain a first rectified voltage.

[0042] In addition, the second half-wave rectification circuit 52 is a circuit connected to the same AC power supply AP fo...

Embodiment approach 2

[0067] exist figure 1 In an example, two LED parts are used, and the first LED part 11 and the second LED part 12 are connected in series to form the LED assembly 10 . However, the present invention does not limit the number of LED units to two, and for example, three or more LED units may be used. As an example, in figure 2 An example in which an LED assembly is constituted by three of the first LED section 11 , the second LED section 12 , and the third LED section 13 is shown as Embodiment 2. FIG. The light emitting diode driving device 200 shown in this figure includes: a first half-wave rectification circuit 51, a second half-wave rectification circuit 52, a first LED part 11, a second LED part 12, a third LED part 13, a first power supply control part 21, the second energization control part 22, the third energization control part 23, the fifth energization control part 25, the sixth energization control part 26, the seventh energization control part 27, the first cur...

Embodiment approach 3

[0076] Furthermore, in image 3 Embodiment 3 shows a light emitting diode drive device 300 configured by connecting four of the first LED unit 11 , the second LED unit 12 , the third LED unit 13 , and the fourth LED unit 14 in series as an LED assembly. The light emitting diode driving device 300 shown in this figure includes: a first half-wave rectification circuit 51, a second half-wave rectification circuit 52, a first LED section 11, a second LED section 12, a third LED section 13, and a fourth LED section. 14. First energization control unit 21 , second energization control unit 22 , third energization control unit 23 , fourth energization control unit 24 , fifth energization control unit 25 , sixth energization control unit 26 , seventh energization control unit 27 , the eighth energization control unit 28 , the first current detector 41 , and the second current detector 42 . Additionally, for figure 1 , figure 2 The same components are given the same names, and det...

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PUM

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Abstract

The present invention includes a second half-wave rectifying circuit (52) connected to a common AC power source and for performing half-wave rectifying on the AC voltage of the AC power source at a timing different from that of a first half-wave rectifying circuit (51) to acquire a second rectified voltage; a sixth energization control unit (26) which is connected in parallel to a first LED unit (11) and connected in series with a second LED unit (12) as viewed from the second LED unit (12) and is used for controlling the amount of energization to the second LED portion (12) in a state where the second rectified voltage is applied; a fifth energization control portion (25) which is connected in series between an output side of the second half-wave rectifying circuit (52) and the first LEDportion (11) and is used for controlling the amount of energization to the first LED portion (11) and the second LED portion (12) in a state where the second rectified voltage is applied; and a secondcurrent control portion (32) which is used for controlling a fifth energization control portion (25) and a sixth energization control portion (26) based on the current value flowing through the second LED portion (12) in a state where the second rectified voltage is applied.

Description

technical field [0001] The invention relates to a light-emitting diode driving device and lighting and fishing lights using the light-emitting diode driving device. Background technique [0002] In recent years, light-emitting diodes (hereinafter also referred to as "LEDs") that can be driven with lower power consumption than incandescent bulbs and fluorescent lamps have attracted attention as light sources for lighting. LEDs have the advantages of being small in size, strong in impact resistance, and long in life. [0003] As such a power source for lighting equipment, it is preferable to use an AC power source such as a commercial power source. On the other hand, LEDs are DC-driven components that only emit light under forward current. [0004] In order to cope with this opposite condition, various LED drive circuits using an AC power supply have been proposed. For example, a method has been proposed in which LEDs are switched so that the total value of Vf changes accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00Y02B20/40
Inventor 渡边照雄
Owner NICHIA CORP