JPS6323739Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a light bulb cover for use in a large-screen electric display device such as a so-called mammoth television, which displays scores and other information at baseball stadiums, football venues, etc.

The large-screen electronic display devices installed in outdoor stadiums, etc., such as those mentioned above, are constructed with light bulbs as picture elements individually wrapped in a cover and arranged in an orderly manner. When a light bulb goes out, the repair person would use a ladder or other device to climb up to the front of the large screen installed at a high place and perform tasks such as changing light bulbs from in front of the screen. Therefore, such work is extremely difficult during illumination. However, unless you turn on the lights, you won't be able to tell which bulb has failed, which makes the process a bit tricky. It would be nice to be able to change light bulbs from behind the large screen while avoiding the large screen's illumination, but since the light bulb cover has a metal reflective surface, it is impossible to tell if the light bulb is malfunctioning from behind the cover. This idea solves these conventional drawbacks by making the light bulb cover removably detachable from the reflector part and the socket mounting part, and by making the socket mounting part from a transparent or translucent material. It is characterized by:

One embodiment of this invention will be described with reference to the accompanying drawings. Reference numeral 1 denotes a light bulb cover having a reflective inner surface 2, an open front surface, and a cedar 3 provided in the opening.

The light bulb cover 1 is often made of aluminum or the like. A step part 4 is provided at the rear of the cover 1 to form a small diameter part 1', and protrusions 5 are arranged circumferentially at equal intervals at the rear end of the small diameter part 1'. On the other hand, a dish-shaped socket attachment part 6 made of a transparent or translucent heat-resistant plastic member is placed in the back opening 7 of the cover 1. The socket mounting part 6 is dish-shaped, and the cylindrical part 6' bent toward the small diameter part 1' has a slit 8 at a position corresponding to the protrusion 5, and the slit 8 is particularly wide. It has a narrow part and a narrow part.
Turn the narrow part of the slit 8 around the protrusion 5 to fix them so that they are separated, and then turn the slit 8 in the opposite direction to engage the protrusion 5 with the wide part of the slit 8 so that it can be easily removed. It's getting old.

Reference numeral 9 denotes a socket for a light bulb 10 fixed to the socket mounting portion 6. 11 is a mold material for attaching the cover 1; 12 is a step part 4 at the rear of the cover 1 and the mold material 11;
This is a cushioning material such as silicone rubber inserted between the

Since this device is constructed as described above, malfunctions in the light bulb 10 can be easily recognized from the back of the screen, which is the translucent part of the socket mounting part 6. Since it can be easily removed and removed, it is very easy to replace the light bulb, and it is also extremely beneficial in terms of occupational health, since the eyes are not exposed to intense light every time the work is done, as was the case in the past.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the present invention, and FIG. 2 is an exploded view thereof. 1...Light bulb cover, 5...Protrusion, 6...Dish-shaped socket attachment part, 8...Slit, 9...Socket, 10...Light bulb.

Claims (1)

[Scope of utility model registration request] In a light bulb cover device for an electronic bulletin board, in which light bulbs are individually wrapped in a light bulb cover as picture elements of a screen and arranged in an orderly manner on a mold, the light bulb cover is combined with a large-diameter reflector tube located on the front side of the mold, and the mold material. a small diameter part that is fitted into an opening provided in the mold member and protrudes to the rear side, and has an inner diameter through which the light bulb can pass in the longitudinal direction, and is fixed to the mold material, and is fixed to the rear end opening of the small diameter part. A light bulb cover device for an electronic bulletin board, characterized in that a light bulb socket is fixed in the center part and a socket mounting part made of a transparent or translucent material can be detachably attached.