JP2000348520A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily handling lead wires by leading out first and second lead wires electrically connected to electrodes in the both sides of a fluorescent discharge tube in a vessel from lead wire leading holes in first and second rubber terminals which are engaged with respective ends of the fluorescent discharge tube and providing a pinching part of the second lead wire led out from the second rubber terminal in the first rubber terminal. SOLUTION: There are arranged a light guide plate having light emission from a fluorescent discharge tube incident thereon and radiating it to the upper face is arranged and a light reflecting plate and a light diffuser in its lower and upper faces respectively. A first lead wire 12, electrically connected to an electrode, or one end of the fluorescent discharge tube having the both ends engaged in an engagement hole 17, etc., of second and first rubber terminals 16, 14, is led out from a lead wire leading hole 18 in the first rubber terminal 14. A second lead wire 9 electrically connected to the electrode in the other end is led out from the leading hole in the second rubber terminal 16, pinched in a lead wire pinch part 15 of the first rubber terminal 14, and stably fixed therein without moving vertically in the vertical directions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a lighting device.

[0002]

2. Description of the Related Art In recent years, liquid crystal display devices have been frequently used for displaying images on personal computers, word processors, video cameras, and the like, and the applications thereof have been diversified and are increasing. As the liquid crystal display device, there is one disclosed in JP-A-10-199487, which illuminates the liquid crystal display device from behind the liquid crystal display device by an illuminating device, and recognizes an image from the front surface of the liquid crystal display device. It is configured as follows.

[0003]

The above-mentioned device requires an illuminating device for illuminating the liquid crystal display element from the back, and the illuminating device receives light from a fluorescent discharge tube of a cold cathode or a hot cathode. A light guide plate is provided on the front surface, and a light diffusion plate and a prism sheet are sequentially arranged on the upper surface of the light guide plate. Light from the fluorescent discharge tube is incident on the side surface of the light guide plate, and light emitted from the upper surface of the light guide plate is diffused. The light is emitted through a plate and a prism sheet to illuminate the liquid crystal display element.

[0004] In recent years, this type of lighting apparatus has tended to be lightweight and thin, and therefore, a chassis, a light guide plate, a light source, a light diffusion plate, and a prism sheet are housed in a very thin and narrow container. . Generally, an elongated straight tube type cold cathode or hot cathode fluorescent discharge tube is often used as the light source.
By the way, in the case of a straight tube type discharge tube, since electrodes are provided at both ends of the bulb, it is necessary to electrically connect lead wires to both electrodes, and do not fix and treat the lead wires as much as possible so as not to move. And the device cannot be compacted. By the way, the lead wires have conventionally been loosened by rubber terminals 16 and 22 attached to the fluorescent discharge tube 8, as shown in FIG. In the drawing, reference numeral 16 denotes a rubber terminal attached to the other end of the fluorescent discharge tube. Although not shown, an engaging hole for engaging the other end of the fluorescent discharge tube and a lead wire 21 for electrically connecting the electrode to the fluorescent discharge tube are drawn out. And a hole. Reference numeral 22 denotes a rubber terminal attached to one end of the fluorescent discharge tube.
Although not shown, it has an engagement hole for engaging one end of the fluorescent discharge tube and a lead wire drawing hole 19 for drawing out a lead wire 20 electrically connected to an electrode at one end of the fluorescent discharge tube.

Although the rubber terminal 16 has no problem, the other rubber terminal 22 has the following problems. The lead wire 21 drawn out from the rubber terminal 16 simply extends along the periphery of the rubber terminal 22.
2 may move up and down or move out of the rubber terminal 22, and the lead wire may interfere with other components.

Accordingly, the present invention has been made in view of the above, and has as its object to provide an illuminating device which is designed to easily and appropriately handle the separation of lead wires.

[0007]

In order to achieve the object of the present invention, a lead wire drawn from a rubber terminal at the other end of a fluorescent discharge tube as a light source and led to one end of the fluorescent discharge tube is connected to a fluorescent discharge tube. And is fixed by sandwiching it in a lead wire sandwiching portion provided on a rubber terminal attached to one end of the lead wire.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a first lead wire electrically connected to an electrode at one end of a fluorescent discharge tube and a second lead electrically connected to an electrode at the other end. A wire, a first rubber terminal engaged with and attached to one end of the fluorescent discharge tube, and a first rubber terminal for taking out the first lead wire from a lead hole, and a first rubber terminal engaged with and attached to the other end of the fluorescent discharge tube. A second rubber terminal that pulls out the second lead wire from the lead hole, a chassis, a light guide plate that receives light emitted from the fluorescent discharge tube and emits light from the upper surface, and a light reflection plate that is disposed on a lower surface of the light guide plate. And a light diffusing plate disposed on the upper surface of the light guide plate in a container.
The first rubber terminal is provided with a lead wire sandwiching portion for sandwiching the second lead wire drawn out of the rubber terminal of the first rubber terminal. The lighting device does not move.

According to a second aspect of the present invention, a prism sheet is further arranged on the structure of the first aspect.
Since the lead wire sandwiching portion is provided in the first rubber terminal, a lighting device in which the lead wire does not move can be provided.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 is a perspective view of an illuminating device according to an embodiment of the present invention, wherein 1 is an upper frame, 2 is a lower frame, and 9 and 12 are both electrodes of a fluorescent discharge tube mounted in the device. The reference numeral 13 denotes a lead-out hole of the lead wire. FIG. 2 is a longitudinal sectional view taken along line AA of FIG.
Reference numeral 3 denotes a chassis, and 4 denotes a light guide plate made of, for example, acrylic resin, which receives light emitted from the fluorescent discharge tube and emits light to the upper surface.
Is a light reflection plate provided on the bottom surface of the chassis, 6 is a light diffusion plate provided on the upper surface of the light guide plate, 7 is a prism sheet provided on the upper surface of the light diffusion plate, 8 is a cold cathode or hot cathode type fluorescent discharge tube, Reference numeral 9 denotes a lead wire, 10 denotes a frame hole provided in the frame 2, 11 denotes a frame hole provided in the frame 1, and 14 denotes a rubber terminal attached to an end of the fluorescent discharge tube 8.

The apparatus has the above-described structure. Next, rubber terminals attached to both ends of the fluorescent discharge tube will be described.

FIG. 3 shows rubber terminals 1 at both ends of a fluorescent discharge tube.
FIG. 4 is a perspective view in which a fluorescent discharge tube provided with a rubber terminal 4 and a rubber terminal 16 is partially cut. The rubber terminal 14 has a lead wire holding portion 15 for holding the lead wire 9 drawn out from the rubber terminal 16 attached to the other end of the fluorescent discharge tube, and an engaging hole (not shown) with which one end of the fluorescent discharge tube is engaged. And a lead wire drawing hole 18 through which the lead wire 12 electrically connected to the electrode at one end of the fluorescent discharge tube is drawn. Rubber terminal 16
Has an engaging hole 17 for engaging the other end of the fluorescent discharge tube 8 and a lead hole (not shown) for leading the lead wire 9 electrically connected to the electrode at the other end of the fluorescent discharge tube. Become.

Since the lead wire 9 drawn out from the other end of the fluorescent discharge tube is sandwiched by the lead wire sandwiching portion 15 of the rubber terminal 14, the lead wire 9 does not move the rubber terminal up and down and is extremely small. It is fixed stably.

As described above, the lead wire electrically connected to the electrode at the other end of the fluorescent discharge tube and wired to one end of the fluorescent discharge tube along the longitudinal direction of the fluorescent discharge tube is attached to one end of the fluorescent discharge tube. The rubber terminal is stably fixed by the lead wire holding portion. In this embodiment, the prism sheet is provided, but this is not always necessary depending on the configuration of the light guide plate or the light diffusion plate.

[0016]

As described above, in the lighting device of the present invention, the lead wires electrically connected to the electrodes at both ends of the fluorescent discharge tube can be stably separated, so that the lead wires do not move. Can be

[Brief description of the drawings]

FIG. 1 is a perspective view of a lighting device according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view taken along line AA of the embodiment of FIG.

FIG. 3 is a partially cutaway perspective view of the fluorescent discharge tube of the embodiment according to FIG. 1 with rubber terminals attached to both ends.

FIG. 4 is a plan view showing a conventional example in which rubber terminals are attached to both ends of a fluorescent discharge tube.

[Explanation of symbols]

 Reference Signs List 1 frame 2 frame 3 chassis 4 light guide plate 5 light reflection plate 6 light diffusion plate 7 prism sheet 8 fluorescent discharge tube 9, 12 lead wire 14, 16 rubber terminal 15 lead wire sandwiching portion 17 engagement hole 18 lead wire drawing hole

Claims (2)

[Claims] 1. A fluorescent discharge tube, a first lead wire electrically connected to an electrode at one end of the fluorescent discharge tube, and a second lead wire electrically connected to an electrode at the other end of the fluorescent discharge tube. A first rubber terminal engaged with and attached to one end of the fluorescent discharge tube to take out the first lead wire from a drawing hole; and a second rubber terminal engaged with and attached to the other end of the fluorescent discharge tube. A second rubber terminal for pulling out a lead wire from a lead hole, a chassis, a light guide plate for receiving light emitted from the fluorescent discharge tube and emitting light from an upper surface, a light reflecting plate disposed on a lower surface of the light guide plate, In a lighting device in which a light diffusing plate disposed on an upper surface of a light guide plate is housed in a container, a lead wire sandwiching portion for sandwiching the second lead wire drawn out from the second rubber terminal is provided in the first device. The lighting device provided on the rubber terminal of the above. 2. A fluorescent discharge tube, a first lead wire electrically connected to an electrode at one end of the fluorescent discharge tube, and a second lead wire electrically connected to an electrode at the other end of the fluorescent discharge tube. A first rubber terminal engaged with and attached to one end of the fluorescent discharge tube to take out the first lead wire from a drawing hole; and a second rubber terminal engaged with and attached to the other end of the fluorescent discharge tube. A second rubber terminal for pulling out a lead wire from a lead hole, a chassis, a light guide plate for receiving light emitted from the fluorescent discharge tube and emitting light from an upper surface, a light reflecting plate disposed on a lower surface of the light guide plate, In a lighting device including a light diffusing plate disposed on an upper surface of a light guide plate and a prism sheet disposed on an upper surface of the light diffusing plate in a container, the second device pulled out from the second rubber terminal The lead wire insertion part that inserts the lead wire Lighting device formed by providing a rubber pin.