JP3045499B1 - Light emitting devices, decorative lights and caution lights - Google Patents

Abstract

An object of the present invention is to provide a light emitting device suitable for lighting a wide space, and a decorative light and a caution light provided with the light emitting device. SOLUTION: A transparent body having a conical portion and having a hole opened at least on the vertex side in a central portion of the conical portion, and a light source provided in the hole on the vertex side of the conical portion It is characterized by having.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting device, a decorative light, and a caution light.

[0002]

2. Description of the Related Art Conventionally, as a lighting device, as shown in FIG.
There is known a light source that includes a light bulb and reflects light from the light bulb with a light reflecting member to illuminate a certain direction brightly. This lighting device is used for a flashlight or the like.

[0003]

According to the above-mentioned conventional lighting device, since the light of the electric bulb is reflected by the metal-plated portion of the funnel-shaped light reflecting member, the light is strongly irradiated in a certain direction. Although suitable for one spot lighting,
Not suitable for lighting large spaces. Also, since the light was not spread at a wide angle, it was not suitable for a caution light. The color of the light is also monochromatic light visually, and is less interesting for use in decorative lamps and the like.

[0004] The present invention has been made in view of the above problems, and has as its main object to provide a light emitting device suitable for lighting a wide space, and a decorative light and a caution light provided with the light emitting device.

[0005]

According to a first aspect of the present invention, there is provided a light emitting device, comprising: a transparent body having a conical portion, wherein a central portion of the conical portion is provided with a hole opening at least on the vertex side; A light source provided in the hole on the vertex side of the conical portion. This light emitting device is used, for example, as various lights such as interior lights, flashlights, vehicle lights, etc., as interior decorations, as decoration lights for Christmas trees, etc., and also used as caution lights such as night work lights and automobile brake lights. Can be According to the light emitting device of the first aspect, light of various wavelengths contained in the light from the light source is refracted at the wall surface of the hole in the central portion according to the wavelength, so that the light from the bottom surface of the conical portion can be obtained. The emitted light can be spread at a wide angle, while the color of the light can be changed depending on the viewing angle. Therefore, the light can be visually recognized from a wide range, and a change in color can be enjoyed.

According to a second aspect of the present invention, in the light emitting device according to the first aspect, a concave portion or a convex portion is partially present on a peripheral surface of the conical portion. According to the light emitting device of the second aspect, the light of various wavelengths contained in the light emitted from the light source is refracted by the wall surface of the hole at the center according to the wavelength, and the concave and convex portions are formed. Since the light is reflected in various directions by the portion, the intensity of light emitted from the conical portion can be varied.

According to a third aspect of the present invention, in the light emitting device according to the first aspect, the peripheral surface of the conical portion has a stepped annular concave portion or an annular convex portion centered on a central axis of the conical portion. Characterized by the presence of a part. According to the light emitting device of the third aspect, not only the effect of the second aspect is obtained, but also since the concave portion or the convex portion is an annular concave portion or an annular convex portion, the center axis of the conical portion is formed. The color and intensity of the light can be changed according to the distance from the object.

The light-emitting device according to claim 4 is the light-emitting device according to claims 1 to 3.
In any one of the light-emitting devices, the light source is a light-emitting diode. According to the light emitting device of the fourth aspect, the light emitting diode which consumes less power than a light bulb or the like is used as a light source, which is useful for reducing power consumption.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a light emitting device according to the present invention,
An embodiment of a decorative light and a caution light will be described with reference to the drawings.

(First Embodiment) Light emitting device 10 of the present embodiment
0 is a conical transparent body 1 as shown in FIGS.
01 and a light emitting diode 102, and emits light of various wavelengths at a wide angle by refracting, dispersing, and reflecting light emitted from the light emitting diode 102. Note that the transparent body 101 only needs to be formed in a conical shape, and does not need to have a conical shape. That is, the transparent body 101 may be formed in a pyramid shape.

The transparent body 101 is made of, for example, transparent plastic or glass. This transparent body 101
Is provided with a circular hole 103 at the center thereof. Note that the hole 103 does not have to penetrate the transparent body 101. Further, on the peripheral surface of the transparent body 101, there is a stepwise annular concave portion or annular convex portion centered on the central axis of the transparent body 101.

The light emitting diode 102 is provided inside the hole 103 of the transparent body 101. In this case, the light emitting diode 102 is arranged near the top of the transparent body 101. The light emitting diode 102 is connected to a diode driving circuit (not shown), and emits light when a switch (not shown) is turned on.

According to the light emitting device 100, the light emitted from the light emitting diode 102 is refracted and split at the wall surface of the hole 103 inside the transparent body 101, and the refracted and split light is stepwise formed into an annular concave portion and an annular portion. The light is reflected in various directions by the peripheral surface 104 provided with the convex portions. Thus, while the light emitted from the bottom surface of the transparent body 101 can be spread at a wide angle, the color of the light can be changed depending on the viewing angle. Further, since the concave portion or the convex portion is an annular concave portion or an annular convex portion, the color and intensity of light can be changed according to the distance of the conical portion from the center axis. Further, since a light emitting diode is used as a light source, light can be emitted with low power consumption.

(Second Embodiment) FIG. 3 shows an example in which the same light emitting device as the first embodiment is used as a decorative lamp. This decorative light is built into the table clock. This table clock 30
0 is a light emitting device 1 that constitutes a decorative lamp as shown in FIG.
00, a box section 302, and a clock section 303.
02 has a size that can accommodate the light emitting device 100 as shown in FIG.

Here, the light emitting device 100 is the same as that described in the first embodiment, and is installed in the box 302 so that the light emitting surface (part of the bottom surface) 104a can be seen from the outside. The clock portion 302 has a dial formed smaller than the light emitting surface 104a of the light emitting device 301.
It is installed on the light emitting surface 104a.

According to the clock 300, light of various wavelengths can be dispersed from around the clock face to emit light at a wide angle, and the clock is beautifully decorated.

Although the example in which the decorative lamp is incorporated in the table clock has been described here, the decorative lamp may be incorporated in, for example, the ovary portion of an artificial flower figurine as shown in FIG. 5 or a mirror as shown in FIG. It can be incorporated into the outer surface of a ball-like figurine.

Third Embodiment FIG. 7 shows an example in which the same light emitting device as the first embodiment is used as a night work caution light. It is configured as a night work caution light. The night work caution light 500 includes a light emitting device 100, a box portion 502, and a support shaft portion 503, as shown in the figure, and the box portion 502 accommodates the light emitting device 100 as shown in FIG. It has a size that can be used.

Here, the light emitting device 100 is the same as that described in the first embodiment, and is installed in the box 502 so that the light emitting surface 104 can be seen from the outside. Also,
As shown in FIG. 7, the upper end of the support shaft portion 503 has a box portion 504.
And the box part can be supported at a fixed height.

According to the night work caution light 500, light of various wavelengths can be emitted in a wide range in the solid angle direction of the cone, so that more attention can be drawn.

Although an example in which the light emitting device is used as a caution light for night work has been described here, the light emitting device can be used, for example, as a brake lamp of an automobile. Also, as shown in FIG. 9, the traffic light accident can be prevented by embedding the light emitting device 100 as caution lights embedded on both sides of the pedestrian crossing. Further, as shown in FIG. 10, by embedding the light emitting device 100 as a caution light in the heel portion of the shoe, it is possible to inform a driver such as a car at night of the location of the person who wears the shoe, thereby preventing traffic accidents. Can be measured.

[0022]

The effect of a typical example of the present invention is as follows. A transparent body having a conical portion and having at least a hole opened at the vertex side of the conical portion in the center portion, Light source provided in the hole on the vertex side of the conical portion, so that light of various wavelengths contained in the light from the light source is refracted by the wall surface of the hole at the center of the transparent body according to the wavelength. And the decorative effect is enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment.

FIG. 2 is a side view of the first embodiment.

FIG. 3 is a perspective view of a second embodiment.

FIG. 4 is a side view of the second embodiment.

FIG. 5 is a perspective view of an application example of the second embodiment.

FIG. 6 is a perspective view of another application example of the second embodiment.

FIG. 7 is a perspective view of a third embodiment.

FIG. 8 is a side view showing a part of the third embodiment.

FIG. 9 is a perspective view of an application example of the third embodiment.

FIG. 10 is a perspective view of another application example of the third embodiment.

FIG. 11 is a diagram showing a conventional example of a light emitting device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 light emitting device 101 transparent body 102 light emitting diode

Continuation of front page (56) References JP-A-9-51124 (JP, A) JP-A-2-299102 (JP, A) JP-A-8-30211 (JP, A) JP-A-11-37931 (JP) , A) Japanese Utility Model Hei 5-59706 (JP, U) Special Table Hei 5-504440 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F21S 2/00 B44C 5/08 F21V 8/00

Claims (6)

(57) [Claims] 1. A transparent body having a conical portion and having a hole opened at least on the vertex side in a central portion of the conical portion, and a light source provided in the hole on the vertex side of the conical portion A light-emitting device comprising: 2. The light emitting device according to claim 1, wherein a concave portion or a convex portion is partially present on a peripheral surface of the conical portion. 3. The peripheral surface of the conical portion has a stepped annular concave portion or an annular convex portion centered on a central axis of the conical portion. Light emitting device. 4. The light emitting device according to claim 1, wherein the light source is a light emitting diode. 5. A decorative lamp comprising the light emitting device according to claim 1. 6. A caution light comprising the light emitting device according to claim 1.