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Discharge lamp with external tube

A technology for discharge lamps and outer tubes, which is applied in the direction of discharge lamps, discharge tubes, gas discharge lamp parts, etc., can solve the problems of coating material costs, achieve sufficient bonding strength, increase the bonding area, and realize The effect of bond strength

Inactive Publication Date: 2012-09-26
IWASAKI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Formation of an opaque film by applying the heat-resistant paint involves cost of coating material and additional cost caused by the coating process

Method used

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  • Discharge lamp with external tube
  • Discharge lamp with external tube
  • Discharge lamp with external tube

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] figure 1 and figure 2 It is a figure which shows the discharge lamp of this invention. Such as figure 1 As shown, the discharge lamp 1 is inside a sealed inner tube 4 made of glass, and a lamp main body 2 accommodating an arc tube 3 such as a ceramic metal halide lamp is attached to a base 6 . The outer tube 5 is bonded to the lamp cap 6 in such a way as to accommodate the lamp main body 2 .

[0024] One end of the lamp main body 2 is sealed, and the other end forms an extrusion sealing portion 7 . A pair of lead wires 8 of the arc tube 3 are led out from the extruded sealing portion 7 to the outside of the lamp main body. The lead wire 8 derived is connected with the lamp cap 6 . By supplying power to the wire 8 from the outside, the luminous tube 3 lights up. The lamp cap 6 is composed of a mounting part 11 and a lamp cap main body 12 . After the lamp main body 2 and the outer tube 5 are installed on the installation part 11, the lamp main body 2 and the outer...

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Abstract

The invention provides a discharge lamp with an external tube, wherein the full cohesive strength can be obtained while the influence of adhesive on the appearance of the lamp is inhibated. According to the discharge lamp(1), the external tube (5) accormmodating the lamp body (4) is adhered to a lamp head (6), the adhering surfaces (9) for bonding the external tube with the lamp head are arranged at two positions, the external diameter of the bonding portion of the external tube is D (mm), when the average area of the adhering surfaces is S (mm<2>), S is not less than 2D-18, and the cohesive strength is guaranteed by determining adaptable adhering surfaces by distributing the external diameter of the external diameter.

Description

technical field [0001] The invention relates to a discharge lamp with an outer tube, the lamp body and the outer tube accommodating the lamp body are mounted on a lamp cap. Background technique [0002] Conventionally, halogen lamps have been used as lighting for stores. In recent years, metal halide lamps with high efficiency and long life have been proposed to replace halogen lamps. [0003] In particular, a ceramic metal halide lamp using a translucent ceramic discharge vessel has excellent corrosion resistance. As a result, rare earth metals that have high luminous efficiency and emit light in the entire visible light range can be used as luminescent substances. Therefore, by using the above-mentioned ceramic metal halide lamp, a light source with high efficiency and high color rendering can be obtained. [0004] Lighting for shops using such ceramic metal halide lamps requires downsizing of the lighting. Therefore, a discharge lamp is proposed, the airtight outer tub...

Claims

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Application Information

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IPC IPC(8): H01J61/36
CPCH01J5/58H01J61/34
Inventor 笹井泰
Owner IWASAKI ELECTRIC CO LTD
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