JP2004281323A - Cold cathode lamp, light source, display device, and guide lamp device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a lamp holder having a cold cathode fluorescent lamp to be mounted on a display device, easily, reliably and correctly without any complex operation. <P>SOLUTION: The cold cathode fluorescent lamp 6 comprises a lamp wire lead-out part for leading out a lamp wire 23, and an insulation cap 22 for insulating and protecting an electrode lead-out wire extended from both sides of a lamp tube 21. Since the opposite side of the lamp lead-out wire lead part is formed as approximately semi arc shape, even if a light source device 2 is formed by mounting the cold cathode fluorescent lamp 6 in a lamp holder 5 before mounting the light source device 2 to the display device 3, and if the cold cathode fluorescent lamp 6 itself turns inside the lamp holder, the insulation cap 22 of the cold cathode fluorescent lamp 6 does not interfere with the upper end surface of a display panel case 22 of the display device 3, allowing the light source 2 to be mounted to the display device 3 easily and correctly. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a cold-cathode lamp, a light source device having the cold-cathode lamp, a display device equipped with the light source device, and an induction lamp device assembled with these.
[0002]
[Prior art]
In the conventional guide light device, a display means is attached so as to close the opening of the appliance body, and the display means is a display panel, a pictogram of the guide light displayed on the surface of the display panel, and a back surface of the display panel. A light guide plate is provided, and a lamp holder is mounted on one side of the upper part of the display means. The lamp holder has a straight tube-type fluorescent lamp and a substantially U-shaped cross-section for reflecting light from the fluorescent lamp in the direction of the light guide plate. Is attached to the light guide plate, the light from the fluorescent lamp is irradiated on the light guide plate, the light incident on the light guide plate is refracted and output as a pictogram, and the pictogram performs an inductive display (for example, Patent Document 1).
As a straight tube type fluorescent lamp of a light source attached to a lamp holder attached to one side of the upper part of the display means of the guide light device, for example, an emergency cold cathode fluorescent lamp of the Japanese light bulb industry standard JEL216 is generally used. I have.
In the case of emergency cold cathode fluorescent lamps with a connector, both ends of the lamp tube are covered with an insulating cap such as silicone to insulate and protect the lamp electrode leads coming out from both ends of the lamp tube. The insulating cap has a cylindrical covering portion wrapped with both ends of the lamp tube, and a rectangular parallelepiped socket portion connected to the covering portion for connecting the lamp electrode lead wire to the electric wire. (For example, see Non-Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent No. 3246555 (pages 2, 3 and 5; FIG. 1)
[Non-patent document 1]
"Standards of the Japan Light Bulb Manufacturers Association", published by the Japan Light Bulb Manufacturers Association, April 10, 1998, p. 40-45
[0004]
[Problems to be solved by the invention]
When an emergency cold cathode fluorescent lamp with a connector is mounted on a lamp holder fitted and mounted on one side of the display means of a conventional guide light device, C-shaped lamps provided on both sides of the lamp holder The emergency cold-cathode lamp is mounted on the lamp holder by fitting the holder into the cylindrical covering of the insulating cap of the emergency cold-cathode fluorescent lamp.
At this time, the bottom surface of the rectangular socket portion of the insulating cap of the emergency cold cathode fluorescent lamp is disposed parallel to the bottom portion of the lamp holder, and the lamp holder of the lamp wire connected to the socket portion is disposed. When the emergency cold-cathode fluorescent lamp is rotated in the lamp holder during wiring work and the bottom of the socket of the insulating cap is inclined with respect to the bottom of the lamp holder, insert the lamp holder into the display means and attach it. In this case, the corner of the socket portion of the insulating cap interferes with one side of the upper part of the display means, and there is a problem that the lamp holder cannot be mounted on the display means.
In this case, in order to mount the lamp holder on the display means, the emergency cold cathode fluorescent lamp must be rotated so that the bottom surface of the socket portion of the insulating cap is parallel to the bottom portion of the lamp holder. In addition, there is a problem that it takes time and effort.
Further, if the emergency cold-cathode fluorescent lamp is mounted on the lamp holder so that the distance between the emergency cold-cathode fluorescent lamp and one side of the upper part of the display means is long, the above-mentioned problem is solved. Then, the distance between the emergency cold-cathode fluorescent lamp and the light guide plate of the display means becomes too long, which causes a new problem that the light guide plate cannot fully utilize the light of the emergency cold-cathode fluorescent lamp.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a cold-cathode lamp in which a lamp holder to which a cold-cathode fluorescent lamp is attached can be easily and surely correctly mounted on a display means without trouble. It is an object to provide a light source device, a display device, and a guide light device.
[0006]
[Means for Solving the Problems]
The cold-cathode lamp according to the present invention is a cold-cathode lamp comprising: a lamp wire lead-out portion for leading a lamp wire; and an insulating cap for insulating and protecting a lamp electrode lead coming from both ends of the lamp tube. The opposite side of the cap from the lamp wire lead-out portion is formed in a substantially semicircular arc shape.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an exploded perspective view showing a configuration of a light source device of the guide light device according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view showing a process of attaching a cold cathode fluorescent lamp to a lamp holder of the light source device, and FIG. FIG. 4 is a perspective view showing a process of mounting the light source device on the display device, FIG. 4 is a rear view showing a state where the light source device is mounted on the display device, FIG. 5 is a sectional view taken along line AA of FIG. 4 is a cross-sectional view taken along the line BB of FIG. 4, FIG. 7 is a perspective view showing another process of attaching the light source device to the display device, and FIG. 8 is a perspective view showing the display device equipped with the light source device and an instrument body. is there.
The guide light device includes a box-shaped appliance main body 1 having an opening, an elongated rectangular parallelepiped light source device 2, and a flat box-shaped display device 3. Then, the display device 3 on which the light source device 2 is integrally mounted is mounted on the appliance main body 1 to form a guide light device (see FIG. 8).
[0008]
The light source device 2 shown in FIG. 1 includes a lamp holder 5 and a cold cathode fluorescent lamp 6 with a connector which is attached to the lamp holder 5 in a housed state.
The lamp holder 5 includes an elongated rectangular parallelepiped holder case 11 having an opening, a plurality of hook-shaped reflector holders 12 provided at appropriate intervals in the holder case 11, and a plurality of hooks in the holder case 11. It has a reflector 13 having a U-shaped cross section held by a reflector holder 12 in a shape of a circle, and hook-shaped lamp holders 14 provided on both sides in the holder case 11. In addition, fitting recesses 15 are provided on the inner surfaces on the lower end sides of both sides of the holder case 11.
[0009]
The cold cathode fluorescent lamp 6 includes a cylindrical lamp tube 21 made of glass, an insulating cap 22 made of silicone or the like that insulates and protects a lamp electrode lead extending from both ends of the lamp tube 21, and an insulating cap 21. And a connector 24 connected to the other end of the lamp wire 23 at one end thereof.
The insulating cap 22 includes a cylindrical covering portion 22a covering the end portion of the lamp tube 21, and a socket portion 22b connected to the covering portion 22a for connecting a lamp electrode lead wire to a lamp wire. The portion 22b has a rectangular parallelepiped lamp wire lead-out portion for drawing out the lamp wire 23, and the side opposite to the lamp wire lead-out portion is formed in a substantially semicircular arc shape.
[0010]
Further, the display device 3 shown in FIGS. 3 to 5 has a display panel 31 having a guide light pictogram displayed on the surface thereof, a side wall, a light guide plate 32 provided on the back surface of the display panel 31, and a light guide plate 32. And a display panel case 33 that accommodates the display panel 31 provided with the display panel 31. The upper ends of both sides of the display plate case 33 are cut out by the thickness of both sides of the lamp holder 5, and a fitting projection 34 is provided on the cutout surface.
[0011]
The positional relationship between the fitting concave portion 15 provided on the lamp holder 5 and the fitting convex portion 24 provided on the display plate case 33 is such that the fitting concave portion 15 of the lamp holder 5 is fitted into the display plate case 33 as shown in FIG. When the lamp holder 5 is fitted to the mating projection 34 and fitted to the display panel case 33, the farthest part of the insulating cap 21 from the central axis of the cold cathode fluorescent lamp 6 housed in the lamp holder 5. Is smaller than the distance Y from the center axis of the cold cathode fluorescent lamp 6 to the upper end surface of the display panel case 33, that is, the difference between X and Y is set to be as small as possible. .
[0012]
Further, the box-shaped fixture body 1 having the opening of the guide light device shown in FIG. 8 has a lighting device 41 for lighting the cold-cathode fluorescent lamp 6 therein, a regular power supply terminal block 42, and a back reinforcing member. A plate 43 is provided, and a power line insertion hole 44 for inserting an external power line (not shown) is formed in the upper side wall. Further, a lamp wire 45 is connected to the lighting device 41. A connector 46 that can be connected to the connector 24 of the cold cathode fluorescent lamp 6 is connected to an end of the lamp wire 45. The power line inserted through the power line insertion hole 44 is connected to the regular power terminal block 42.
[0013]
Next, assembly of the guide light device according to the first embodiment of the present invention will be described.
First, as shown in FIGS. 1 and 2, the cold cathode fluorescent lamp 6 is attached to the lamp holder 5.
In this case, the cold cathode fluorescent lamp 6 is attached to the lamp holder 5 by holding the covering portion 22 a of the insulating cap 22 of the cold cathode fluorescent lamp 6 on the lamp holder 14 of the lamp holder 5. Thus, the cold cathode fluorescent lamp 6 is housed in the lamp holder 5 to constitute the light source device 2.
Next, the light source device 2 is mounted on the display device 3 as shown in FIG.
In this case, when the holder case 11 of the lamp holder 5 of the light source device 2 is inserted into the upper end side of the display plate case 33 of the display device 3, the holder case 11 is provided on the upper end side of both sides of the display plate case 33 as shown in FIGS. The fitting recesses 15 provided at the lower ends of both sides of the holder case 11 are fitted to the fitting projections 34 provided, and the lamp holder 5 of the light source device 2 is fitted to the display plate case 33 of the display device 3. Be attached.
[0014]
Further, the display device 3 on which the light source device 2 is mounted is mounted on the appliance body 1 to assemble the guide light device.
When the guide light device is assembled as described above, the relationship between the cold cathode lamp 6 of the light source device 2 and the upper end of the display panel case 33 of the display device 3 is determined by the cold cathode stored in the lamp holder 5 of the light source device 2. The distance X from the central axis of the fluorescent lamp 6 to the farthest part of the insulating cap 22 is shorter than the distance Y from the central axis of the cold cathode fluorescent lamp 6 to the upper end surface of the display panel case 33 of the display device 3, that is, X <Y. Since the difference between X and Y is set as small as possible, the cold cathode fluorescent lamp 6 and the upper end surface of the light guide plate 32 of the display device 3 are in a sufficiently close positional relationship. The light from the cold cathode fluorescent lamp 6 can be used by the light guide plate 32 without waste.
[0015]
In order to attach the light source device 2 to the display device 3, when wiring the lamp wires connected to the insulating cap 22 of the cold cathode fluorescent lamp 6 to the lamp holder 5, as shown in FIG. The cold cathode fluorescent lamp 6 itself may rotate in the holder 5.
Thus, even if the cold cathode fluorescent lamp 6 itself rotates in the lamp holder 5, the cylinder wrapped around the end of the lamp tube 21 of the insulating cap 22 provided at both ends of the cold cathode fluorescent lamp 6. The socket portion 22b connected to the cover portion 22a has a U-shaped cross section, the lower portion connected to the cover portion 22a has a semicircular shape, and the insulating cap extends from the center axis of the cold cathode fluorescent lamp 6. Is shorter than the distance Y from the center axis of the cold cathode fluorescent lamp 6 to the upper end surface of the display panel case 33 of the display device 3 even when the light source device 2 is mounted on the display device 3. Since the insulating cap 22 of the cold cathode fluorescent lamp 6 of the light source device 2 does not interfere with the upper end surface of the display panel case 33 of the display device 3, the light source device 2 can be easily and correctly mounted on the display device 3. It will be.
Further, since the pictogram of the guide light is displayed on the surface of the display panel of the display device 3, the assembled guide light device functions as a guide light.
[0016]
FIG. 9 is an exploded perspective view showing a configuration of a light source device according to Embodiment 2 of the present invention, and FIG. 10 is a perspective view showing a state where a cold cathode fluorescent lamp is attached to a lamp holder of the light source device.
In the second embodiment, the same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and the description of the duplicate components will be omitted.
The covering portion 122a of the insulating cap 122 of the cold cathode fluorescent lamp 6 according to the second embodiment has a square tubular shape, and the lower portion of the socket portion 122b connected to the covering portion 22a has a rectangular tubular shape similarly to the covering portion 122a. It was done.
[0017]
The lamp holder 114 of the lamp holder 5 for holding the covering portion 122a of the insulating cap 122 is also substantially U-shaped. The shape of the lamp holder 114 may be substantially U-shaped.
With this configuration, since the rectangular parallelepiped covering portion 122a of the insulating cap 122 of the cold cathode fluorescent lamp 6 is held by the substantially U-shaped lamp holder 114 of the lamp holder 5, the display of the light source device 2 is performed. When mounted on the apparatus 3, the cold cathode fluorescent lamp 6 itself does not rotate, and is easily and correctly mounted even when the cold cathode fluorescent lamp 6 and the upper end surface of the display panel case 33 are sufficiently close to each other. Will be done.
[0018]
【The invention's effect】
As described above, according to the present invention, the cold cathode lamp includes a lamp wire lead-out portion for leading a lamp wire, and includes an insulating cap that insulates and protects a lamp electrode lead extending from both ends of the lamp tube. Since the opposite side of the insulating cap from the lamp wire lead-out portion is formed in a substantially semicircular arc shape, when the cold-cathode lamp is mounted in a lamp holder to form a light source device, and the light source device is mounted on a display device, Even if the cold cathode lamp itself is rotated in the holder, the insulating cap of the cold cathode lamp does not interfere with the upper end surface of the display panel case of the display device, so that the light source device can be easily and correctly mounted on the display device. It has the effect of being done.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a configuration of a light source device of a guide light device according to Embodiment 1 of the present invention.
FIG. 2 is a sectional view showing a process of attaching a cold cathode fluorescent lamp to a lamp holder of the light source device.
FIG. 3 is a perspective view showing a process of mounting the light source device on a display device.
FIG. 4 is a rear view showing a state where the light source device is mounted on a display device.
FIG. 5 is a sectional view taken along line AA of FIG. 4;
FIG. 6 is a sectional view taken along line BB of FIG. 4;
FIG. 7 is an exemplary perspective view showing another process of mounting the light source device on a display device;
FIG. 8 is a perspective view showing a display device on which the light source device is mounted and a device main body.
FIG. 9 is an exploded perspective view showing a configuration of a light source device according to Embodiment 2 of the present invention.
FIG. 10 is a perspective view showing a state where a cold cathode fluorescent lamp is attached to a lamp holder of the light source device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument main body, 2 light source devices, 3 display devices, 5 lamp holders, 6 cold-cathode fluorescent lamps, 21 lamp tubes, 22 insulating caps, 22a covering portions, 22b socket portions, 31 display panels, 32 light guide plates, 33 display plate cases , 41 lighting device.

Claims (6)

A cold cathode lamp having a lamp wire lead-out portion for drawing out a lamp wire, and including an insulating cap for insulating and protecting a lamp electrode lead wire coming out from both ends of the lamp tube,
A cold cathode lamp, wherein the insulating cap has a substantially semicircular arc on the side opposite to the lamp wire lead-out portion. A cold cathode lamp having a lamp wire lead-out portion for drawing out a lamp wire, and including an insulating cap for insulating and protecting a lamp electrode lead wire coming out from both ends of the lamp tube,
A cold cathode lamp, wherein the insulating cap is formed in a rectangular tube shape. The cold cathode lamp according to any one of claims 1 or 2, and a lamp holder that stores the cold cathode lamp,
A lamp holder provided at both ends in the lamp holder is formed in the same shape as a part of a portion covering an end portion of a lamp tube of an insulating cap of the cold cathode lamp, and the lamp holder is provided with a lamp of the insulating cap. A light source device for holding a portion covering a tube end. A display device to which the light source device according to claim 3 is mounted includes a display panel, a light guide plate provided on a back surface of the display panel, and a display plate case for housing the display panel provided with the light guide plate,
When the inner surfaces of both side walls of the lamp holder of the light source device are fitted to the upper ends of both side portions of the display plate case, the distance from the center axis of the cold cathode lamp housed in the lamp holder to the farthest part of the insulating cap. 4. The display device according to claim 3, wherein the distance is set to be slightly shorter than a distance from a central axis of the cold cathode lamp to an upper end surface of the display panel case. The display device according to claim 4, wherein a pictogram of the guide light is displayed on a display panel of the display device. The display device according to any one of claims 4 and 5, wherein the light source device according to claim 3 is mounted on a fixture body including a lighting device for lighting a cold cathode lamp of the light source device. Guide light device.

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