Ceramic metal halide lamp
A technology of halide lamps and ceramic metals, which is applied to the parts of gas discharge lamps, discharge lamps with multiple main discharge paths, etc., and can solve problems such as electrical short circuit, lead wire detachment and contact on the side of the lamp head
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no. 1 Embodiment approach
[0058] figure 1 as well as figure 2 These are a front view and a side view for explaining the structure of the ceramic metal halide lamp 10 according to the first embodiment of the present invention, respectively.
[0059] The ceramic metal halide lamp 10 includes two light emitting tubes 4A, 4B inside an outer bulb (also referred to as “outer tube”, “tube bulb” or “outer tube bulb”) 2 . The luminous tubes 4A, 4B are surrounded by protective covers 17A, 17B, respectively.
[0060] The luminous tubes 4A and 4B are containers made of translucent ceramics each having a thick tube in the center and thin tubes at both ends. In each luminous tube, the lead wire 5A (5B) of the second conductive wire and the lead wire 7A (7B) of the first conductive wire extend through the thin tube part to the thick tube part respectively, and electrodes (not shown) made of tungsten (W) are connected to each other. .) are connected at both ends.
[0061] In the container of the arc tube 4A ( 4B...
no. 2 Embodiment approach
[0076] Figure 4 It is a side view for explaining the structure of the ceramic metal halide lamp 40 which concerns on 2nd Embodiment of this invention. The difference between the ceramic metal halide lamp 40 and the ceramic metal halide lamp 10 according to the second embodiment of the present invention is that it includes a spacer 42 .
[0077] The spacer member 42 is made of a metal elongated plate, is arranged between the protective case 17A and the protective case 17B, and is fixed to the frame 8 . The fixing position of the spacer member 42 is a position separated from the fixing members 6A, 6B of the protective cases 17A, 17B.
[0078] The upper parts of the protective covers 17A, 17B are wound around the fixing members 6A, 6B and fixed to the frame 8 . Accordingly, in the absence of the spacer member 42 , the lower portions of the protective cases 17A, 17B are pressed into contact with each other or held at a distance apart.
[0079] When the lower part of the protec...
no. 3 Embodiment approach
[0083] Figure 5 It is a side view for explaining the structure of the ceramic metal halide lamp 50 which concerns on 3rd Embodiment of this invention. The ceramic metal halide lamp 50 differs from the ceramic metal halide lamp 40 of the second embodiment of the present invention in that a plate member 52 is attached to the lead wire 7A connected to the lower end of the arc tube 4A.
[0084] The plate-shaped part 52 is fixed on the side of the lead wire 7A in the protective cover 17A, such as Figure 5 As shown, the orientation of this face is parallel to the plane passing through the two pillars on both sides of the frame 8 . Thus, when the arc tube 4A is broken or broken, the plate member 52 receives the impact and moves toward the Figure 5 There is a high possibility that the surface side or the back side of the middle paper surface is curved. As a result, the lead wire 7A moves in the space between the two pillars on both sides of the frame 8 , so that contact with the...
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