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Discharge tube, lighting device, display device, and television receiver

A technology for lighting devices and discharge tubes, which is applied to lighting devices, lighting device parts, discharge tubes, etc., can solve problems such as the reduction of the lighting light area, and achieve the effects of high yield, low cost and low price.

Inactive Publication Date: 2011-01-12
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compared with the size of the base, the ratio of the portion of the discharge tube that can emit light, that is, the area that can provide illumination light is reduced.

Method used

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  • Discharge tube, lighting device, display device, and television receiver
  • Discharge tube, lighting device, display device, and television receiver
  • Discharge tube, lighting device, display device, and television receiver

Examples

Experimental program
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Effect test

Embodiment approach 1

[0053] according to Figure 1 to Figure 10 Embodiment 1 of the present invention will be described.

[0054] First, the configuration of a television receiver TV having a liquid crystal display device 10 will be described.

[0055] figure 1 It is an exploded perspective view showing a schematic configuration of a television receiver TV according to this embodiment, figure 2 is an exploded perspective view showing a schematic configuration of the liquid crystal display device 10, image 3 is a cross-sectional view showing the structure of the liquid crystal display device 10 taken along the line A-A.

[0056] Such as figure 1 As shown, the television receiver TV of the present embodiment includes: a liquid crystal display device 10; two casings Ca and Cb on the front and back of the liquid crystal display device 10 in a clamping manner; a power supply P; a tuner T; and a base S . The liquid crystal display device (display device) 10 is formed in a horizontally long recta...

Embodiment approach 2

[0102] Next, use Figure 11 ~ Figure 13 Embodiment 2 of the present invention will be described. In this Embodiment 2, the configuration of the tip and the bending method of the lead wire are shown, and the others are the same as those of the above-mentioned Embodiment. The same reference numerals are assigned to the same parts as those in the above-mentioned embodiment, and repeated explanations will be omitted.

[0103] Figure 11 is a cross-sectional view showing the structure of the end portion of the hot cathode tube 17a of this embodiment, Figure 12 yes means Figure 11 The cross-sectional view of the structure of the C-C line section, Figure 13 is description Figure 11 The sectional view of the assembly sequence of the tube head 70 which the hot cathode tube 17a has.

[0104] The hot cathode tube 17 a has a glass tube 30 and a tube head 70 covering the end of the glass tube 30 . The pipe head 70 as a whole is made of non-conductive material (such as made of al...

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PUM

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Abstract

A discharge tube (17) comprises a glass tube (30), a cap (40) disposed at the end of the glass tube (30), and lead wires (32a, 32b) formed at the end of the glass tube (30). The lead wires (32a, 32b) are brought into contact with the cap (40) while bent inside the cap (40) and can receive electric power supply from outside via the cap (40). By bending the lead wires (32a, 32b) constituting non-light-emitting portions of the discharge tube (17), the apparent lengths of the lead wires (32a, 32b) can be reduced, and the proportion of light-emitting-portions in the entire length of the discharge tube (17) can be increased.

Description

technical field [0001] The invention relates to a discharge tube, an illuminating device, a display device and a television receiving device. Background technique [0002] Conventionally, a display device using a non-luminous optical element representing a liquid crystal display device has a backlight device for irradiating light to a display panel such as a liquid crystal panel. The backlight device includes: a plurality of discharge tubes as light sources; a base for accommodating the discharge tubes; and an external power supply for supplying driving power to the discharge tubes. As a discharge tube, a structure is known in which a phosphor is coated on the inner wall of a glass tube, an inert gas (such as argon) and mercury are sealed in the glass tube, and filaments are arranged at both ends thereof, and a voltage is applied between the filaments. This causes arc discharge to emit light. In such a discharge tube, the region between the opposing filaments becomes a pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J5/50F21S2/00F21V19/00G02F1/13357H01R33/02F21Y103/00
CPCH01J5/50G02F1/133604G02F2201/465G02F2001/133612G02F1/133608H01J5/62G02F1/133612
Inventor 吉川贵博
Owner SHARP KK