JPH036937Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slide base lamp used as a display lamp in telephone exchanges and the like.

This type of slide base lamp that uses LED as a light source is well known, but the light emitting part is simply dome-shaped, and the directivity is narrow, resulting in poor visibility.Moreover, the light emitted from the LED chip is Since it is not efficiently directed toward the light emitting surface, the illuminance is reduced, which also causes poor visibility.

The present invention was developed in view of the above circumstances, and its purpose is to provide a slide base lamp with high visibility and high luminous efficiency.

In order to achieve the above purpose, the present invention
A slide base lamp that uses a dome-shaped LED made by molding a chip into a dome shape with molded resin and attaches it to the base via a collar.
A large number of diffusion grooves are formed concentrically and stepwise on the light emitting surface of the dome-shaped resin molded portion of the LED, and a tapered reflective surface is formed on the side surface of the base, and a holding base is provided at the end. The main point is that it has been formed.

The present invention will be explained in detail below with reference to the illustrated embodiments. Reference numeral 1 shows the entire slide base lamp, in which one end 2a of the base 2 is made sharp to serve as an insertion end, and the other end is provided with a collar 3. Dome-shaped light emitting diode (hereinafter referred to as LED) 4
is installed. This LED 4 has two LED chips 5 and 6 connected in antiparallel inside molded in a dome shape with mold resin.
The LED chips are connected to the cap 2 via lead wires 7 and 8, respectively, and one lead wire 8 is connected to a resistor 9 in the same way as in a normal lamp.

The present invention is characterized by the configuration of the LED 4, in which a large number of diffusion grooves 4a are provided concentrically and stepwise on the light emitting surface of the dome-shaped molded portion of the LED (hereinafter referred to as the resin molded portion). A tapered reflective surface 4b is formed on the side surface on the base side, that is, the side surface from which the lead wires 7 and 8 are taken out.
Except for the light beams emitted from the LED chips 5 and 6, most of the other light beams are reflected in the direction of the light emitting surface by the tapered reflecting surface 4b. In the case of this configuration, as is clear from the figure, by forming the tapered reflective surface 4b, a holding base 4c having a predetermined thickness is integrally formed at the end on the base side of the tapered reflective surface 4b. It is used as a guide to determine the attachment position when attaching to the cap 2 via the collar 3.

Regarding the slide base lamp of the present invention constructed in this way, its usage condition will be explained with reference to FIG. A transparent or translucent cover 12 is attached to the opening of the attachment hole 11.

With this kind of installation, when the LED 4 lights up, the light rays a emitted from the LED chips 5 and 6 travel straight through the resin mold part and head directly toward the light emitting surface, while others are reflected by the tapered reflective surface 4b and are directed toward the light emitting surface. The luminous intensity at the light-emitting surface increases dramatically. As for the light emitting surface, light is emitted in various directions by the diffusion grooves 4a, and the entire surface shines uniformly, increasing visibility not only from the front but also from the side. And this
The light emitted from the LED 4 is further diffused by the groove 12a of the front cover 12, and the visibility of the lighting circuit in the telephone exchange is further increased due to the increase in luminous intensity and the diffusion. Although the holding base 4c is formed at the end on the base side and the tapered reflective surface is interrupted, since the LED 4 has a structure that does not emit light backwards, it is sufficient to achieve its purpose and to mount it as described above. Not only is it effective as a location guide, but it also increases the strength of the area where the LED is buried. Furthermore, if the LED chips 5 and 6 are connected in antiparallel and used as an AC power supply, efficient lighting can be expected.

As explained above, the slide base lamp according to the present invention uses a dome-shaped LED, and the light emitting surface of the dome-shaped resin molded part of the dome-shaped LED is provided with a large number of diffusion grooves concentrically and stepwise. This provides an excellent effect in that the light is diffused significantly on the light emitting surface, the light emitting surface shines uniformly, and the visibility from all directions is increased. Furthermore, the side surface of the base side of the dome-shaped resin mold part is formed into a tapered reflective surface, which reflects the light from the LED chip and directs it toward the light emitting surface, greatly improving the luminous intensity of the light emitting surface and reducing power consumption. Although the amount of light is small, the brightness is increased, and in combination with the above-mentioned diffusion, the visibility is further increased.

In addition, by connecting two LED chips in anti-parallel, efficient lighting with AC power supply and LED
Due to the difference in the position of the chips, the light is spread efficiently by the tapered reflection surface and the diffusion groove, and uniform lighting can be expected.

Furthermore, it has a reflective function that plays a role in improving luminous efficiency.
Since the LED itself is provided on the resin mold part of the LED, there is no need for any other reflective member.Furthermore, a holding base that serves as a guide for the mounting position is also formed on the resin mold part at the same time, so for example, a ceramic base Another advantageous effect is that the number of parts can be reduced, such as eliminating the need for a carrier made of a separate member.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of the slide base lamp according to the present invention, Fig. 2 is a front view of the lamp, and Fig. 3 is an enlarged view of the main parts of the lamp in the installed state. FIG. 1...Slide base lamp, 2...Base, 3
...Color, 4...LED, 4a...Diffusion groove, 4
b...Tapered surface, 4c...Holding base,
5, 6...LED chip, 7, 8...Lead wire.

Claims (1)

[Scope of utility model registration request] In a slide base lamp that uses a dome-shaped LED made by molding an LED chip into a dome shape with molded resin and is attached to a base through a collar, there are many diffusion lines on the light emitting surface of the dome-shaped resin molded part of the LED. A slide base lamp characterized in that grooves are formed concentrically and stepwise, a tapered reflective surface is formed on the side surface of the base, and a holding base is formed at the end.