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Wedge base electric light bulb

A wedge-shaped base and light bulb technology, applied to discharge lamps, gas discharge lamps, gas discharge lamp parts, etc., can solve discoloration or peeling off, unbearable paint, difficult to prevent glass bubble coating spots or pores, etc. achieve low cost

Inactive Publication Date: 2004-10-06
NIPRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In addition, when using traditional colorless transparent glass bulbs with wedge-shaped bases, when the surface of the glass bulb is coated with paint, it is difficult to prevent coating spots or pores on the surface of the glass bulb, and the paint may bear Discoloration or peeling due to the temperature when the lamp is lit

Method used

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  • Wedge base electric light bulb
  • Wedge base electric light bulb
  • Wedge base electric light bulb

Examples

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Embodiment Construction

[0025] Hereinafter, a wedge-shaped light bulb according to an embodiment of the present invention, a manufacturing method thereof, and an insulating collar using the wedge-shaped light bulb will be described with reference to the accompanying drawings.

[0026] The structure of the wedge-shaped base light bulb will now be described.

[0027] refer to figure 1 and figure 2 , the structure of the wedge base light bulb 100A in this embodiment will be described. This wedge base light bulb 100A has a light bulb body 1 and an insulating collar 2 . The head of the light bulb body 1 is hemispherical, and the body has a substantially cylindrical colored glass bulb 11 and a pressurized sealing portion 12 . A filament 13 is housed in the colored glass bulb 11 . The filament 13 is connected to a lead wire 14 whose distal end side is connected to the filament 13 and whose proximal end side is exposed from the pressure sealing part 12 .

[0028] The base end side of the lead wire 14 ...

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Abstract

The wedge base bulb includes a bulb body having a colored glass bulb and a press-sealed portion. Further, a tubular insulation collar is mounted to cover press-sealed portion. Bulb body is formed in a process in that a molding section of a glass tube including a color-developing compound or a color-developing element is heat-melted under a reducing atmosphere in a predetermined temperature region, placed in a mold and expanded in the mold, and also develops color with colloid generated by the heat-melting. As a result, a wedge base bulb developed a color and chromaticity satisfying a predetermined standard can be provided at a lower cost.

Description

technical field [0001] The present invention relates to a wedge-shaped base light bulb, and particularly relates to the structure of a wedge-shaped base light bulb used for blinker lights, tail lights, and stop lights of automobiles and the like. Background technique [0002] Since the second half of the 1980s, light bulbs used in automobile blinkers, tail lights, stop lights, etc. have been changed from such Figure 7 The shown electric bulb 200 with lamp base is changed into Figure 8 Shown is a wedge-shaped base bulb 300, which is used in nearly all automobiles today. For example, the lamp unit for direction indication used in automobiles is composed of a warm yellow-orange synthetic resin glass lampshade and a colorless and transparent wedge-shaped base bulb. [0003] However, in recent years, attention has been paid to the exterior design of automobiles. The direction indicator lamp unit has been changed to a colorless and transparent synthetic resin glass lampshade, a...

Claims

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Application Information

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IPC IPC(8): H01K1/28H01J61/30H01J61/36H01K1/44H01K7/04H01R33/05
CPCH01K7/04H01J61/368H01J61/30H01J61/302
Inventor 石原义久
Owner NIPRO CORP
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