Cold cathode fluorescence tube device

Abstract

To restrain increase in tube temperature of an electric discharge tube when increasing tube current or the number of discharge tubes of a cold cathode fluorescence lamp apparatus.This cold cathode fluorescence lamp apparatus is provided with a holder 1 formed with a material of high heat radiation ability, a discharge tube 2 having both ends 3 supported by the holder 1, and a thermal-conductive bracket 5 fixed to a middle part 4 extending between the discharge tube 2 and both the end parts 3 and closely attached to the holder 1. Heat generated from the discharge tube 2 is discharged outside through the bracket 5 and the holder 1 thermally connected to the bracket 5 to prevent temperature increase of the discharge tube 2.

Description

technical field [0001] The present invention relates to a cold cathode fluorescent tube (lamp) device, in particular to a cold cathode fluorescent tube device capable of releasing heat generated by the cold cathode fluorescent tube to achieve high brightness and long life. Background technique [0002] For example, a backlight disclosed in Patent Document 1 below is well known. In this backlighting device, cold cathode fluorescent tubes are arranged at the side ends of the flat light guide body, and light introduced from the fluorescent tubes is emitted from the top of the light guide body by being reflected by a reflector formed under the light guide body. This device is equipped with a reflector that surrounds the fluorescent tube. The first gap formed between the fluorescent tube and the light guide side end is almost the same as the second gap formed between the fluorescent tube and the curved surface of the reflector. Moreover, the sum of the first gap and the second g...

AI Technical Summary

Problems solved by technology

However, the characteristic of the cold cathode fluorescent tube is that when the temperature of the glass tube wall exceeds a certain temperature, the brightness of the fluorescent tube will drop.

Therefore, even if the tube current or the number of tubes is increased, the temperature of the tube wall of the glass tube will increase, and as a result, high brightness cannot be obtained.

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