JPH0714507U - Light emitting device - Google Patents

Abstract

(57) [Abstract] [Purpose] A light emitting device that can efficiently emit light with a small light source, that is, the size and weight of the light emitting device can be reduced and the outer shape and translucent shape of the device can be freely set, and that the life is long and the exchangeability is good. I will provide a. [Structure] A cap 3 is detachably attached to an upper portion of a casing 2 of a cylindrical car stop pole 1, a surface light-emitting body 4 is attached to a bottom portion of the cap 3, and a solar cell 15 on the upper surface of the cap 3 is used as a power source. A mirror surface 6 is provided below the cavity 5 of the casing 2 to emit light, and a vertically long slit-shaped light transmitting window 7 is provided above the casing 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a three-dimensional light emitting device having a portion that emits light using a battery, a solar battery, and a commercial power source, and can be used as a car stop pole, a guide pole, a garden light, a lantern, etc., having a light emitting portion.

[0002]

[Prior art]

 Conventional light-emitting devices have a required opening on the wall of a hollow box, enclose the light source of a light bulb / fluorescent lamp inside the hollow box, and direct the light from the light source from the opening of the box to the opening. The light is projected.

[0003]

[Problems to be solved by the device]

 Since conventional light emitting devices use light sources such as bulbs and fluorescent lamps, the power consumption of the light source is large, the heat generation is large, the luminous efficiency is poor, and the size is large, and the weight is large and the life of the light source is relatively short. In need. Also, the box body was heated and tended to have heat. The problems to be solved by the present invention are firstly to make it possible to efficiently emit light with a small light source, secondly to reduce the size and weight of the light emitting device, and thirdly to outline the device and its translucent shape. The purpose is to provide a device having a long life and good exchangeability.

[0004]

[Means for Solving the Problems]

 The gist of the present invention which solved such a problem is as follows: 1) A wide cavity is provided inside the main body of the device, a surface light emitter is placed on one surface of the cavity, and a mirror surface is provided on the inner surface of the cavity facing the light emitter, and a further surface is provided. A light-emitting device characterized in that a light-transmitting window of a required shape is provided on the other side surface of the cavity between the light-emitting body and the mirror surface. 2) The surface light-emitting body uses the back surface of the plate-shaped transparent body as a diffuse reflection surface. The above 1), which has a structure in which the outer periphery other than the surface of the transparent body that faces the diffuse reflection surface is covered with a light reflector, and a small light-emitting lamp that reflects light toward the light reflector is embedded inside the transparent body. 3) The light-emitting device according to 2), wherein the small light-emitting lamp is a light-emitting diode 4) The surface-emitting body is detachably attached as a partial wall of a cavity of the light-emitting device, 1) to 3). 5) The light emitting device according to any one of 1) to 4) above, wherein the cavity has a cylindrical shape. ) The light emitting device according to any one of 1) to 4) above, wherein the cavity is a thin rectangular parallelepiped 7) Any of the above 1) to 6) in which the inner surface of the cavity is a mirror surface excluding the surface light emitter and the translucent window. It is in the light emitting device. The external shape of the device body of the present invention can be various shapes such as a cylindrical shape and a rectangular parallelepiped shape.

[0005]

[Action]

 In the present invention, by arranging the surface light emitter and the mirror surface on the opposite surfaces of the cavity inside the device, a considerable part of the light emitted from the surface light emitter is reflected by the mirror surface, and the surface light emitter and the mirror surface are reflected. Light is confined in the cavity between them, the cavity is saturated by the light, and part of the light passes through the transparent window, whereby the light is emitted from the transparent window of the device.

In the structure of the surface light emitter according to claim 2, the light from the point source of the small light emitter passes through the inside of the transparent body and is reflected by the light reflector, and then diffusely reflected by the irregular reflection surface on the back surface. The light is projected from the transparent transparent surface. With this surface light emitter, it is possible to obtain a uniform surface light emitting surface of light from a large area due to the small light emitter. Further, the light incident on the transparent body is likewise emitted from the surface emitting surface in the course of time, which is an efficient surface emitting body.

If the surface light emitter is detachable as a part of the cavity wall, the surface light emitter can be easily repaired, replaced, and assembled. Furthermore, if the entire inner surface of the cavity is made to be a mirror body excluding the surface light-emitting body and the light-transmitting window, the light-reflecting property is enhanced, and the light absorption is small and the light can be efficiently radiated from the light-transmitting window.

[0008]

【Example】

 Hereinafter, an embodiment of a bollard pole of the present invention will be described with reference to the drawings. In this embodiment, a column-shaped wheel stop pole is provided with a vertically elongated light-transmitting window above the pole, and the surface light emitter is a surface light emitter using the light emitting diode according to claim 3. It is attached to the bottom of a removable cap on the top of the bollard pole. The surface light emitter uses a solar cell mounted on the top surface of the cap. 1 is a front view of the embodiment, FIG. 2 is a plan view of the embodiment, FIG. 3 is a vertical sectional view of the embodiment, FIG. 4 is an enlarged vertical sectional view of a surface light emitter of the embodiment, and FIG. 5 is a cap of the embodiment. FIG. 6 is an explanatory view showing another example of the shape of the mirror surface.

In the figure, 1 is a cylindrical car stop pole, 2 is a cylindrical casing made of cast aluminum of the car stop pole, 3 is a cap made of cast aluminum of the car stop pole, 4 is a surface light emitter, and 5 is the car stop pole 1. An internal cylindrical cavity, 6 is a mirror surface provided below the cavity, 7 is a vertically long transparent window opened above the vehicle stop pole 1, 8 is a plastic disc-shaped transparent body of the surface light emitting body 4, 9 is a diffuse reflection surface formed by giving many fine scratches on the back surface of the transparent body, 10 is an aluminum foil reflector attached to the circumference of the transparent body, and 11 is a disk shape that closes the bottom surface of the cap 3. The surface luminous body 4 is fixed to the center of the mirror body. Reference numeral 12 is a red light emitting diode inserted in the center of the transparent body 8, 13 is a recess provided in the center of the transparent body 8 that accommodates the light emitting diode, 14 is a reflector attached to the inner surface of the recess, 15 Is a solar cell that serves as a power source for the light emitting diode 12 provided on the top of the cap 3, 16 is a charging circuit that stores the power source of the solar cell in the battery 17, 17 is a battery, and 18 is a milky white paste attached inside the translucent window 7. A semi-transparent board, 19 is a screw for fitting and fixing the cap 3 on the upper end of the tubular casing 2.

In this embodiment, the electromotive force of the solar cell 15 is charged into the battery 17 via the charging circuit 16 by receiving sunlight in the daytime. When the electromotive force in the solar cell 15 decreases at night or in the cloud, a switching circuit (not shown) in the charging circuit operates to connect the battery 17 and the light emitting diode 12, and the light emitting diode 12 emits red light. Lights up. The red light of the light emitting diode 12 is projected substantially horizontally in the transparent body 8, is reflected and dispersed by the curved surface of the reflector 10 on the circumference thereof, and is repeatedly reflected by the reflector 10 and the irregular reflection surface 9 on the other circumference. In addition, light is uniformly emitted from the surface (lower surface) of the transparent body 8 facing the irregular reflection surface 9. Part of the projected red light is directly projected onto the translucent window 7, and the other part is projected downward and is reflected by the lower mirror body 11, so that the red light is diverged in the cavity 5. The light is projected in the outward direction from the transparent window 7 and makes the portion of the transparent window 7 glow red.

Since the cap 3 is only attached to the casing 2 with the screw 19, the cap 3 can be easily attached and detached. The surface of the mirror surface 6 is not limited to a flat surface, but may be a curved surface or a cone shape as shown in FIGS. Further, the cavity of the present invention is not limited to the cylindrical shape as in the above-mentioned embodiment, but has a thin rectangular parallelepiped shape as shown in FIG. 8, and the shape of the translucent window has a design of a desired shape, characters and symbols. You can also do it.

[0012]

[Effect of device]

 As described above, according to the present invention, the light projected from the surface emission is reflected by the mirror surface in the cavity, the light is made to run uniformly in various directions in the cavity, and the light is transmitted through the light transmitting window on the intermediate side wall. By projecting light, a small-sized, low-power light source can generate light efficiently with less heat generation. Further, since there are few restrictions on the shape of the main body of the device and the shape of the light-transmitting window, it is possible to provide a light-emitting device having various light-emitting window shapes in various shapes.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a vertical sectional view of an example.

FIG. 4 is an enlarged vertical cross-sectional view of a surface light emitter according to an example.

FIG. 5 is a bottom view of the cap of the embodiment.

FIG. 6 is an explanatory diagram showing another example of the shape of the mirror surface.

FIG. 7 is an explanatory diagram showing another example of a mirror surface.

FIG. 8 is an explanatory view showing another example of the shape of the device body of the light emitting device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Car stop pole 2 Casing 3 Cap 4 Surface light emitter 5 Cavity 6 Mirror surface 7 Transparent window 8 Transparent body 9 Diffuse reflection surface 10 Reflector 11 Mirror body 12 Light emitting diode 13 Cavity 14 Reflector 15 Solar cell 16 Charging circuit 17 Battery 18 Board 19 screws

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display area // F21S 1/00 E

Claims (7)

[Scope of utility model registration request] 1. A wide cavity is provided inside the main body of the apparatus, a surface light emitter is placed on one surface of the cavity, and a mirror surface is provided on the inner surface of the cavity facing the same surface light emitter, and further in the middle of the surface light emitter and the mirror surface. A light-emitting device, characterized in that a light-transmitting window having a required shape is provided on a side surface of another cavity. 2. A surface light-emitting body has a back surface of a plate-shaped transparent body as a diffuse reflection surface, and the outer periphery other than the surface of the transparent body facing the diffuse reflection surface is covered with a light reflector, and the light reflector is inside the transparent body. The light-emitting device according to claim 1, wherein the light-emitting device has a structure in which a small light-emitting lamp that reflects light toward the light source is embedded. 3. The light emitting device according to claim 2, wherein the small light emitting lamp is a light emitting diode. 4. The light emitting device according to claim 1, wherein the surface light emitter is detachably attached as a wall of a cavity of the light emitting device. 5. The light emitting device according to claim 1, wherein the cavity has a cylindrical shape. 6. The cavity is a thin rectangular parallelepiped.
The light emitting device according to any one of to 4. 7. The light emitting device according to claim 1, wherein the inner surface of the cavity is a mirror surface excluding the surface light emitter and the light transmitting window.