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Lighting device and lighting fixture

一种照明装置、电容器的技术，应用在照明装置、光源、电气元件等方向，能够解决不能利用直流电源电路、变更直流电源电路、开发工时增加等问题

Active Publication Date: 2017-11-28
PANASONIC INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, there is a problem that the DC power supply circuit needs to be changed, and a general-purpose DC power supply circuit cannot be used
And, a dedicated IC or a microcomputer is required
In addition, since it is necessary to change the DC power supply circuit in this way, there is also a problem that development man-hours increase

Method used

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  • Lighting device and lighting fixture
  • Lighting device and lighting fixture
  • Lighting device and lighting fixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] [structure of the lighting equipment]

[0035] First, the configuration of the lighting fixture 100 according to the present embodiment will be described. figure 1 It is a figure which shows the structure of the lighting fixture 100 which concerns on this Example. Such as figure 1 As shown, the lighting fixture 100 includes a lighting device 101 and a plurality of light emitting elements 102 .

[0036] The lighting device 101 turns on a plurality of light emitting elements 102 using electric power from a commercial power supply 103 . Furthermore, a power switch 104 such as a wall switch is connected between the lighting device 101 and the commercial power supply 103 . That is, when the power switch 104 is turned on and off, the power supply from the commercial power supply 103 to the lighting device 101 is switched on and off, and the power supply to the light emitting element 102 is switched on and off.

[0037] The lighting device 101 includes a DC power supply ci...

Deformed example 1

[0063] Figure 5 It is a figure which shows the structural example of 100 A of lighting fixtures concerning the modification 1 of this Example. exist Figure 5 In the illustrated lighting fixture 100A, the number of series-connected light-emitting elements 102 included in the light-emitting group LED1 (number of light-emitting elements 102 connected in series) is greater than the number of series-connected light-emitting elements 102 included in the light-emitting group LED2. Furthermore, the switching circuit 112A includes only the switching element Q2 connected in series to the light emission group LED2. That is, the light emitting group LED1 is not connected in series with the switching element.

[0064] In this case, while the switching element Q2 is on, current flows only in the light-emitting group LED2 having a small number of series connections, ie, a low forward voltage, among the light-emitting groups LED1 and LED2 . On the other hand, while the switching element ...

Deformed example 2

[0068] Figure 6 It is a figure which shows the structural example of the lighting fixture 100B which concerns on the modification 2 of this Example. exist Figure 6 In the illustrated lighting fixture 100B, the light emitting group LED1 and the light emitting group LED2 are connected in series. Furthermore, the switching circuit 112B includes only the switching element Q2 connected in parallel to the light emitting group LED2.

[0069] In this case, while the switching element Q2 is off, current flows in both of the light emission groups LED1 and LED2. On the other hand, while the switching element Q2 is turned on, current flows only in the light emitting group LED1.

[0070] Therefore, stepwise dimming can be realized by making the light emitting colors of the light emitting groups LED1 and LED2 the same.

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PUM

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Abstract

A lighting device (101) is configured to be connected to a power switch (104) and supply a plurality of light-emitting elements (102) with current and includes: a DC-power supply circuit (111) configured to supply the plurality of light-emitting elements with the current when the power switch (104) is turned on; a switching circuit (112) for switching which light-emitting element or light-emitting elements among the plurality of light-emitting elements is supplied with the current; a detection circuit (111) which detects current or voltage supplied from the DC-power supply circuit; and a control circuit (114) which controls the switching circuit to switch which of the light-emitting element or light-emitting elements from among the plurality of light-emitting elements is supplied with the current, when the power switch is turned from on to off and back to on within a predefined period and the current or the voltage detected by the detection circuit is less than when the power switch is on.

Description

technical field [0001] The present invention relates to a lighting device and a lighting fixture, and particularly to a lighting device that supplies current to a plurality of light emitting elements. Background technique [0002] For example, a technique for switching a light emitting element to emit light by successively switching a power switch such as a wall switch from on to off and on is known (for example, refer to Patent Document 1). [0003] (Prior art literature) [0004] (patent documents) [0005] Patent Document 1: Japanese Patent No. 5420106 [0006] According to the technique of Patent Document 1, the on and off of the power switch are detected by detecting the voltage at the front stage of the DC power supply circuit. In this case, there is a problem that the DC power supply circuit needs to be changed, and a general-purpose DC power supply circuit cannot be used. Specifically, it is necessary to add a detection circuit for detecting the voltage. Also, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37H05B45/48H05B45/3725H05B45/375H05B47/10H05B45/46H05B45/38H05B45/24
Inventor 关圭介
Owner PANASONIC INTPROP MANAGEMENT CO LTD
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