JPS61190379A - Transmission type large display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a large transmissive display device used as advertising media on the street, video equipment in stadiums, etc.

BACKGROUND OF THE INVENTION FIG. 4 shows a conventional large transmissive display device. Fourth
In the figure, numeral 1 is a transmissive display section that also has characters, pictures, etc. on its surface. 2 is a light emitting part, which includes a fluorescent lamp 3 and a socket 4.
Consists of.

Next, the operation of the above conventional example will be explained. In FIG. 4, when the light emitting section 2 emits light, the light passes through the transmissive display section 1 and leaks out of the large transmissive display device, thereby displaying the image on the display section 1 clearly. Even in the conventional large-scale transmissive display device as described above, when the fluorescent light in the light emitting section is turned on, the display section in the front direction of the light emitting section 2 can be clearly displayed.

Problems to be Solved by the Invention However, in the conventional large-scale transmissive display device described above, as the device itself becomes large, the fluorescent lamps that make up the light emitting part tend to need to be divided, and the fluorescent lamps are installed in the divided parts. There is a cap and a socket, and since these parts do not emit light, unevenness occurs in the light emitting part 2, and there is a problem in that there are partial dark areas in the image on the display part 1. The present invention solves these conventional problems, and solves the problem of providing an excellent large-sized transmissive display device having an even light emitting section.
Means for Solving the Problems In order to achieve the above object, the present invention provides a cover having a reflective surface that covers a non-light emitting part such as a cap or socket of a fluorescent lamp, and this cover can be attached to the non-light emitting part. It is configured as follows.

Effects The present invention has the following effects due to the above configuration. In other words, since the cover covers the non-emitting parts of the fluorescent lamp base and socket, light from the surrounding fluorescent lamp light emitting parts is bent toward the display part (forward direction) by the reflective surface of this cover. Since the display surface is irradiated with the light, it has the advantage of not causing light unevenness in the display section.

Embodiment FIG. 1 shows the configuration of essential parts of an embodiment of the present invention. In FIG. 1, 11 is a fluorescent lamp corresponding to the fluorescent lamp 3 in FIG. 3, and has a tube 12 corresponding to a light emitting part and caps (ends) 13 at both ends. The fluorescent lamp 11 is held by a socket 14. Reference numeral 15 denotes a metal cover, which is formed by bending a single elastic metal plate, for example, and has reflective surfaces 1 in two directions.
7, and a finger 16 as a holding portion is provided at the tip of the reflective surface 17. cover 15
is mounted so that the cap 13 and socket 14 of the fluorescent lamp 11 are sandwiched inside by the reflective surface 17 and the finger 16 (arrow A). At this time, a part of the cover 15 and the base 13 form an elastic contact surface with each other. The surface of the reflective surface 17 is mirror-finished by means such as plating so as to reflect the light from the fluorescent lamp 11. The other configurations are the same as in FIG. 3.

Next, the operation will be explained with reference to FIGS. 1 and 2. In FIG. 2, reference numerals lla to 11e indicate fluorescent lamps that are successively installed, and the figure shows a cross section near the socket 14. For example, the cover 15 placed over the socket 14 of the fluorescent lamp 11a reflects part of the i-light from the adjacent fluorescent lamp 11b on the reflecting surface 17, so that the It is possible to obtain the directional light components.

Therefore, in the display section (not shown), even the front of the socket 14 or the cap 13 of the fluorescent lamp 11 is illuminated by the reflective surface as if these parts were emitting light, thereby preventing uneven light.

In addition, since the cover 15 is made of metal, the fluorescent lamp 11
The heat is transmitted from the base 13 to the cover 15 by conduction, and is radiated into the air from the surface of the cover 15, thereby achieving a cooling effect. This effect is particularly effective when a large number of fluorescent lamps are mounted closely together as shown in FIG.

In addition, as shown in the other embodiment of FIG. 3, when two sockets 14 are adjacent to each other, two sockets 14
A cover 18 may be provided to be commonly attached to both.

Further, the shape of the cover 15 is not limited to the case where the tip 19 forms an acute angle, but may be formed using a curved surface. In short, any configuration that can reflect the light emitted from the fluorescent lamps on both sides and guide the light forward is fine.

Furthermore, the material of the reflective surface 17 is not limited to metal, and the surface of plastic may be plated. In this case, it is unavoidable that a sufficient heat dissipation effect cannot be obtained.

Effects of the Invention As is clear from the description of the above embodiments, the present invention has the following effects.

(1) The mirror-treated mirror on the side covers the fluorescent lamp base and socket, which are the dark areas of the light emitting part, and reflects the light from adjacent fluorescent lamps forward, so it is uniform. (2) If the cover is made of a material with good thermal conductivity,
Since the heat generated by the fluorescent lamp can be dissipated into the air through the cover, the temperature of the coldest point of the fluorescent lamp can be lowered, and the luminous flux efficiency of the fluorescent lamp can be increased.

[Brief explanation of drawings]

1 and 2 show the configuration of a large-sized transmissive display device according to an embodiment of the present invention, FIG. 1 is a perspective view of the main part thereof,
The figure is a cross-sectional view of the configuration shown in FIG. 1, FIG. 3 is a perspective view of main parts of another embodiment, and FIG. 4 is a partially cutaway external perspective view of a conventional large-sized transmissive display device. ...Display section, 11...Fluorescent lamp, 12...Tube, 1
3... Base, 14... Socket, 15... Cover, 16... Finger, 17... Reflective surface. Name of agent: Patent attorney Toshio Nakao and 1 other person
j Invitation 2 Figure 3 Figure 4

Claims (1)

[Claims] When illuminating the display section with light emitted from a large number of fluorescent lamps arranged on the rear side of the display section, a cover having a reflective surface on the surface is attached to a non-light emitting part such as a base or a socket of the fluorescent lamp, A large transmissive display device configured to reflect light emitted from another fluorescent lamp adjacent to the non-light-emitting portion by the cover to illuminate the front surface of the non-light-emitting portion.