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Lighting device for discharge lamp

A discharge lamp and lighting technology, which is applied to the layout of electric lamp circuits, lighting devices, electric light sources, etc., and can solve the problems of large and expensive switching units

Inactive Publication Date: 2005-05-11
MITSUBISHI ELECTRIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, in order to turn on / off the lighting device, the input drive power line is directly turned on / off, so there is a switch unit that needs to be large and expensive to withstand a large load current and a large voltage of the power line. parts of the problem

Method used

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  • Lighting device for discharge lamp
  • Lighting device for discharge lamp
  • Lighting device for discharge lamp

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] Implementation form 1

[0020] figure 1 It is a circuit diagram showing a discharge lamp lighting device according to an embodiment of the present invention. In the drawing, a DC power supply 1 is obtained by rectifying a commercial power supply with, for example, a diode bridge and smoothing it with an electrolytic capacitor. A series circuit of MOSFETs 2 and 3 as switching elements is connected to the DC power supply 1 to constitute an inverter circuit. Resistor 11 is connected in parallel with MOSFET2. The choke coil 5 , the discharge lamp 6 , and the coupling capacitor 8 are connected in series, and these series circuits are connected in parallel with the switching element 3 . A capacitor 7 is connected in parallel to the discharge lamp 6 . The anode of the diode 9 is connected to the negative pole of the DC power supply 1 , and the cathode is connected to the connection point of the coupling capacitor 8 and the discharge lamp 6 . The anode of diode 10 is conn...

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PUM

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Abstract

The present invention provides an inexpensive and small discharge lamp lighting device whereby a discharge lamp can be lighted or put out by switching on and off electric power to a discharge lamp load circuit with a small control current. This discharge lamp lighting device is provided with an inverter circuit having two switching elements 2, 3 to convert a DC current supplied from a DC power supply 1 to a high frequency current, a choke coil 5 connected parallel to one switching element of the inverter circuit, a discharge lamp load circuit L10 comprising a series circuit of a coupling capacitor 8 connected to the choke coil 5 through the discharge lamp 6, secondary windings 5a, 5b provided in the choke coil 5, a switching circuit to switch on and off the oscillation of the inverter circuit by bypassing a current passing the control terminals of the switching elements 2, 3 or by preventing it from bypassing, and an output control circuit SW10 to output an ON / OFF control signal to the switching circuit.

Description

technical field [0001] The present invention relates to a discharge lamp lighting device which can turn on / off a discharge lamp by using a human sensor, a clock, a timer and the like. Background technique [0002] As a prior art for turning on / off a lighting device by a signal such as a human sensor, there is the following anti-theft lighting turning on and off device, which has a switch unit for turning on and off the lighting device and according to the normal life pattern. The set schedule makes the lighting device turn on and turn off the light to control the switch control unit of the switch unit, so that even when there is no one at home, it can realize the natural on / off action as if someone is living in the house (for example, patent document 1). [0003] (Patent Document 1) Japanese Patent Application Laid-Open No. 10-284262 (paragraphs 0013 to 0019, figure 2 ) [0004] In the above-mentioned existing device, the switch of the lighting device is controlled by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/24H02M7/48H05B37/02H05B41/14H05B41/28H05B41/36
CPCY02B20/00Y02B20/40
Inventor 高桥修
Owner MITSUBISHI ELECTRIC CORP
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