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Electronic ballast and illuminating device

An electronic ballast and lighting system technology, applied in the field of lighting systems, can solve problems such as misoperation

Inactive Publication Date: 2009-08-12
MATSUSHITA ELECTRIC WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the ballast cover does not have a shielding function, the possibility of misoperation still exists

Method used

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  • Electronic ballast and illuminating device
  • Electronic ballast and illuminating device
  • Electronic ballast and illuminating device

Examples

Experimental program
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Effect test

Embodiment Construction

[0031] figure 1 A lighting system according to a first embodiment of the invention is shown. figure 1 The lighting system is a vehicle lighting system such as headlights, fog lights, eg fog lights in the first embodiment. The system consists of a lampshade 16 , a front lens 17 , a reflector 18 , a discharge lamp 19 and an electronic ballast 10 .

[0032] The lampshade 16 is, for example, a housing provided with a reflector 18 and a discharge lamp 19, and has a front opening 16a and a rear opening 16b. The rear opening 16 b is formed at the bottom 161 of the lampshade 16 . The lampshade 16 is formed of a conductive material such as metal. In the case of fog lamps, the housing is usually connected to the frame ground. The lampshade 16 is also connected to the frame ground.

[0033] The front lens 17 is formed of a translucent material so as to close the front opening 16a. The front lens 17 is fixed on the edge of the front opening 16a with an adhesive (such as hot melt or ...

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PUM

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Abstract

An electric ballast attached to the outside of a lighting system. The system comprises a lamp housing with front and rear openings, a front lens closing the front opening, a discharge lamp put in the housing, and a reflector that reflects light of the lamp toward the lens. The ballast comprises: a ballast housing which closes the rear opening and is connected with frame ground via at least one of the lamp housing and the reflector; a lamp socket and an igniter, put in the front of the ballast housing; and a power converter put in the ballast housing. The output of the converter is connected with the socket, which directly connects with the lamp, and the igniter is connected between them. Heat generating parts of the converter are put in the rear of the ballast housing, and the rear functions as a radiator.

Description

technical field [0001] The present invention relates to a lighting system, such as a headlight, a fog lamp, etc., and more particularly to an electronic ballast for such a device. Background technique [0002] One prior art device described in Japanese Patent Application Laid-Open No. 2001-338506 includes an electronic ballast for a vehicle lighting system comprising: a lamp housing having a front opening and a rear opening; a front opening closing the front opening; a lens; a discharge lamp disposed in the lamp housing; and a reflector disposed in the lamp housing to reflect light to the lens. The ballast is composed of a ballast cover that closes the rear opening, and an inverter and an igniter arranged in the ballast cover. The ballast is also electrically connected to the lamp via the harness (wires and connectors) and the lamp socket. [0003] Another prior art device described in Japanese Patent Application Laid-Open No. 2002-367414 includes an electronic ballast for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V29/00F21Y101/00F21W101/10
Inventor 滨田英毅木户正二郎
Owner MATSUSHITA ELECTRIC WORKS LTD
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