JP2003016806A - Illumination lamp using light-emitting diode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly and illuminate in a manner of fantasy a wide area in a fantasy-like manner, even with low current consumption, and to provide superior durability. SOLUTION: This lamp is provided with a light-emitting member 10, formed of a transparent plastic included with large number of bubbles 13, and a light- emitting diode 15 for illuminating the light-emitting member 10. The member 10 is provided with a base 20 for supplying an electric power source to the light-emitting diode 15. Plural pieces which are different in their colors are allowed to be used as the light-emitting diode, and a reflection plate 17 is preferably provided to reflect illumination light emitted from the light-emitting diode, in the direction of the light-emitting member 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination lamp using a light emitting diode, and more particularly to an illumination lamp that diffuses illumination light emitted from the light emitting diode to enable fantastic illumination.

[0002]

2. Description of the Related Art Conventionally, a light-emitting diode, which saves power and has a long lifespan, has been attracting attention as a light source to replace an incandescent bulb. It is not a substitute for a sphere. To compensate for this, some light bulbs use several tens of light emitting diodes in one light bulb. Further, as an illuminating lamp using this type of light emitting diode, there is a decorative light bulb described in JP-A-10-49077. As shown in FIG. 6, this decorative light bulb has a hollow transparent ball 6 made of glass or hard resin.
1 and a base 62 which is fixed to the lower part of the sphere to form an electrode
And a plurality of LED light-emitting bulbs 64 which are connected between the electrodes of the base via a suitable resistor 63 and are enclosed in a bulb. The surface of the LED light emitting sphere 64 is specially processed, and the light emission is formed so as to be emitted in the direction of the entire spherical surface except the bottom portion.

[0003]

By the way, in the light bulb using the former light emitting diode, the white light emitting diode is expensive although it depends on the color, and the price is very expensive when many light emitting diodes are used. It becomes a thing. Further, since a large number of light emitting diodes are connected, the structure becomes complicated, the wiring work becomes complicated, the manufacturing becomes complicated, and the current consumption also increases.

In the latter decorative light bulb, a plurality of LED light emitting bulbs are enclosed in a hollow transparent sphere, and the light emitting portion in the sphere is L-shaped.
The number of ED light-emitting bulbs is the same as that of the ED light-emitting bulbs, and in the case of illustration, illumination is performed with five light-emitting portions. Further, since a plurality of LED light emitting balls are used, the current consumption is large, the wiring connection is complicated, and the manufacturing and assembling are not easy. In addition, multiple LEs
Since the D light-emitting sphere is suspended in the air, it swings in the sphere due to vibration and the like, and there is a problem in durability.

The present invention has been made in view of such a problem, and an object thereof is to illuminate a large number of light emitting parts in a fantastic manner even when illuminated by a single light emitting diode. It is possible to illuminate a large area uniformly with a small amount of current consumption, there is no danger of being destroyed even if an impact is applied, and it is an object of the present invention to provide an illumination lamp using a light emitting diode having excellent durability. .

[0006]

[Means for Solving the Problems] To achieve the above object,
An illuminating lamp using a light emitting diode according to the present invention is characterized by including a light emitting member formed of transparent plastic in which air bubbles are enclosed, and a light emitting diode illuminating the light emitting member. It is preferable that the transparent plastic is solid, and that a large number of small-sized bubbles are randomly encapsulated therein, and that the light emitting member is illuminated by a single light emitting diode. The light emitting diode may be in the form of a chip.

In a preferred concrete mode of the illuminating lamp using the light emitting diode according to the present invention, the light emitting member has a base for supplying power to the light emitting diode, and the base is supplied with a commercial power supply of 100 V, for example. It is preferably insertable in a socket. In addition, a plurality of light emitting diodes of different colors are used. further,
Another preferable specific mode of the illuminating lamp using the light emitting diode according to the present invention is characterized by including a reflection plate that reflects the illumination light emitted from the light emitting diode toward the light emitting member.

In the illuminating lamp using the light emitting diode of the present invention configured as described above, when the light emitting diode is turned on, the light emitting member is illuminated by the illumination light, and a large number of light emitting members are scattered in the transparent plastic. Bubbles float up and a large number of bubbles appear to shine and light appears to emerge from the bubbles, enabling fantastic illumination. Since even one light emitting diode seems to have a large number of light emitting portions, it is possible to illuminate a wide area, the light emitting diode can be easily supported and the structure can be simplified, and the manufacturing can be facilitated.
The illumination lamp can be provided at low cost.

The light emitting member is provided with a base from which power can be supplied to the light emitting diode to illuminate it.
Also, a plurality of light emitting diodes of different colors are used,
For example, the lights can be elegantly and fantastically lit by alternately or selectively illuminating or by mixing and illuminating. When the illumination light emitted from the light emitting diode is reflected by the light emitting member using the reflecting plate, a large number of bubbles in the light emitting member can be lifted up more clearly and fascinating illumination can be achieved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an illuminating lamp using a light emitting diode according to the present invention will be described in detail below with reference to the drawings. 1A is a vertical sectional view of an illuminating lamp using the light emitting diode according to the present embodiment, FIG. 1B is a front view of the illuminating lamp in a disassembled state, and FIG. It is a circuit diagram. 1 and 2, an illuminating lamp 1 includes a light emitting member 10 made of transparent plastic in which air bubbles are enclosed.
And a light emitting diode that illuminates the light emitting member 10 (hereinafter,
15) and a base 20 connected to the light emitting member 10.

In this embodiment, the light emitting member 10 is formed of a transparent acrylic resin solid body composed of a spherical portion 11 having a diameter of about 30 mm and a small diameter cylindrical portion 12 below the spherical portion 11. For example, a large number of bubbles 13 having a diameter of about 1 to 2 mm are randomly enclosed. This bubble 13
When the light emitting member 10 is injection-molded, the resin is encapsulated by mixing a resin material with a foaming agent and molding. Depending on the foaming conditions at this time, a desired size of bubbles and the number of bubbles can be obtained, and the bubbles 13 are formed on the inner side at a predetermined distance from the outer peripheral surface without protruding to the outer peripheral surface. Each of the bubbles 13 is formed in a spherical shape, and the inner peripheral surface thereof is formed to be smooth. When the light is irradiated, the bubbles 13 reflect and shine, and appear to float in the transparent plastic. Although the example of the transparent acrylic resin having high transparency is shown as the transparent plastic, it is needless to say that it may be formed of other transparent resin.

The light emitting member 10 is formed with a cylindrical opening 14 at the center, which opens downward in the vertical direction. The opening 14 is not always necessary, but supports the light emitting member 10 during injection molding. A support shaft (not shown) is fitted. The opening 14 is not limited to a columnar shape, and a shape in which a spherical shape is continuous with an upper portion of a cylinder or an appropriate shape is used, but it is preferable to be located on the central axis of the light emitting member 10.

The LED 15 comprises a bullet-shaped top portion 15a and two terminals 15b projecting downward from the top portion. The top portion 15a is injection-molded with a synthetic resin such as acrylic resin, and although not shown, the light emitting diode element is fixed inside the receiving portion of one terminal, and the other terminal is wire-bonded to the light emitting diode element. .
The LED 15 is configured to emit light from the light emitting diode element by energizing the two terminals 15b. The outer diameter of the top portion 15a of the LED is set smaller than the inner diameter of the opening portion 14 of the light emitting member 10, and the top portion 15a can be inserted into the opening portion 14.

The LED 15 is fixed to a substrate 16 located inside the base 20 by two terminals 15b, and a reflection plate 17 is located on the outer periphery of the two terminals 15b. Reflector 1
7 is composed of an upper conical reflecting surface and a lower cylindrical portion, and the inner surface of the reflecting surface 17 is a glossy surface.
The illumination light emitted from 15 is reflected toward the light emitting member 10. The top portion 15a of the LED 15 is inserted into the opening portion 14 and the supporting state is stable. The reflector 17 is not always necessary, and may be provided if necessary. The lighting circuit 25 is fixed to the upper surface of the substrate 16. The lighting circuit 25 will be described later.

The base 20 is formed of a thin metal plate material by pressing or the like, is formed into a cylindrical container shape having an opening at the top and a through hole at the bottom, and a spiral outer peripheral threaded portion 21 on the outer periphery.
Are formed. The insulating material 2 is provided in the through hole at the bottom.
The center terminal 23 is fixed via 2. The substrate 16 located in the base 20 is provided with two connection terminals, one connection terminal is connected to the center terminal 23, and the other connection terminal is connected and fixed to the inner surface of the outer peripheral threaded portion 21 of the base. There is. In this way, the LED 15 is stably fixed in an upright state at the center of the base 20.

The upper opening of the base 20 is a light emitting member 10.
The cylindrical portion 12 of the light emitting member 10 has an inner diameter larger than the diameter of the cylindrical portion 12, and the cylindrical portion 12 of the light emitting member 10 can be fitted into the opening of the base 20. Thereby, the base 20 and the light emitting member 10 can be bonded and fixed. The base 20 can be inserted by, for example, screwing an outer peripheral threaded portion 21 into a socket (not shown) of a commercial power source, the center electrode at the back of the socket and the center terminal 23 of the base are connected, and the inner peripheral screw of the socket is connected. The portion and the outer peripheral threaded portion 21 can be threadedly connected to each other to conduct electricity.

As shown in FIG. 2, the lighting circuit 25 basically comprises a voltage drop circuit 26 and a rectifier circuit 27.
The voltage drop circuit 26 is composed of a resistor, and the rectifier circuit 27 is 4
It is composed of individual diodes. The capacitor 28 connected in series has a noise cutting function, but it is not always necessary. Further, a capacitor 29 for stabilizing the power supply may be placed in parallel on the output side of the voltage drop circuit 26, and a stabilizing capacitor (not shown) may be placed on the output side of the rectifier circuit 27. The LED 15 is connected to the output end of the rectifier circuit 27.

The operation of the illuminating lamp 1 using the light emitting diode of the present embodiment configured as described above will be described below. When the illuminating lamp 1 is screwed into a socket to which a commercial power source is connected and power is supplied, a direct current power source of a predetermined voltage is applied to the LED 15 through the lighting circuit 25 including the voltage drop circuit 26 and the rectifier circuit 27 to emit light. . The illumination light irradiates the light emitting member 10, reaches a large number of bubbles 13, and is reflected and scattered by the inner surface of the spherical surface of the bubble 13.

Therefore, even the light of the LED 15 having a strong directivity is scattered by the bubbles 13 in the light emitting member 10, and a large number of the bubbles 13 are floated up in the transparent plastic so that a large number of light emitting portions (bright spots) are scattered. It looks like a fantastic light, for example, infinite stars shine in space.
In this way, even though only one LED 15 is used, it is difficult to see the LED 15 directly, and it seems that a large area is illuminated by a large number of light emitting parts.
In particular, when the light emitting member 10 is made of colored transparent plastic, the inner peripheral surface of the bubble 13 is colored and floats up, and the illumination becomes more fascinating.

The LED 15 is fixed to the substrate 16 by the two terminals 15b, and the top portion 15a is inserted into the opening portion 14 so as to be stably fixed. The substrate 16 is firmly fixed in the base 20. Therefore, it does not move due to vibration or impact and has excellent durability. The illumination light emitted from the LED 15 is reflected in the direction of the light emitting member 10 by the reflection plate 17, and a large number of bubbles 13 can be floated with high brightness.

Another embodiment of the present invention will be described in detail with reference to FIG. FIG. 3 shows another embodiment of an illuminating lamp using a light emitting diode according to the present invention, (a) is a longitudinal sectional view,
(B) is a sectional view taken along line AA of (a), and (c) is B of (a).
It is a -B line sectional view. It should be noted that this embodiment is characterized in that a plurality of LEDs of different colors are used and the caps are different from those of the above-mentioned embodiments. Then, other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 3, the illumination lamp 1A is a light emitting member 1.
0A and four LEDs that illuminate this light emitting member 10A
15A, LED15A is, for example, red, yellow,
The light emitting member 10 uses four colors of green and blue.
A has a base 30 for supplying power to the four LEDs 15A. The light emitting member 10A is formed of a transparent plastic in which a large number of bubbles are enclosed as in the above-described embodiment, and in the present example, a large number of bubbles 13A having substantially the same diameter are enclosed.
The upper end of the opening 14A has a spherical shape.

The four LEDs 15A are fixed by soldering on the circumference of a substrate 35 located in the base 30, and the substrate 35 has a circular shape and the common electrode pattern 36 at the center and the circumference. Four individual electrode patterns 37 are formed. The base 30 is different from that of the above-described embodiment, and not the screwed groove but the two pins 31 projectingly provided on the outer periphery, and the pin 31 is used as a locking groove of a socket (not shown). It is engaged and fixed. Base 3
An insulating material 32 is fitted and fixed below 0, and five terminal portions 33 and 34 are fixed to the insulating material. 4 on the circumference
The individual terminal portion 33 of the book is connected to one terminal of the LED 15A of four colors, and the one central terminal portion 34 at the center is the LE of four colors.
It is connected to the other terminal of D15A.

In this embodiment, by connecting the central terminal portion 34 of the base 30 and the individual terminal portion 33 on the outer periphery to a power source, the four color LEDs 15A can be selectively or simultaneously turned on. 4 LEDs 15A
Although not shown in the figure, a lighting circuit that selects or lights at the same time, a circuit that manually switches the switch, a circuit that automatically switches at a predetermined time, or the like is appropriately used.
In this example, the four LEDs 15A are the light emitting members 1
Since it is facing the flat surface below 0A, the flat surface is LE
It is desirable that the surface be smooth and polished so that the light emitted from D15A is easily transmitted.

In this example, a plurality of L's having different colors are used.
The ED 15A can be selected and turned on, or can be turned on alternately or in a mixed color, and the bubbles 13A of different colors float up in the transparent plastic of the light emitting member 10A,
Illumination is possible because light is emitted from these bubbles 13A, so that fantastic illumination is possible. Also in this example, a reflector may be provided below the LED 15A to reflect the light emitted from the LED in the direction of the light emitting member 10A. Further, the LEDs may be arranged on a straight line instead of being arranged on the circumference.

Next, still another embodiment of the present invention will be described with reference to FIG. FIG. 4 is a cross-sectional view of a main part of still another embodiment of the present invention. In FIG. 4, the illumination lamp 40 includes a light emitting member 41 made of transparent plastic.
And a light emitting diode element 45 for illuminating the light emitting member 41.
The light emitting member 41 has a large number of bubbles 42 enclosed therein. The light emitting diode element 45 has a structure in which an n-type semiconductor crystal whose charge carrier is an electron and a p-type semiconductor crystal which is a hole are combined, and a positive voltage is applied to an anode provided on the p-type crystal, on the n-type crystal. When a negative voltage is applied to the cathode of, the holes of the minority charge carriers are injected from the p-type region to the n-type region,
It recombines with electrons, which are majority charge carriers, and the binding energy is converted into light.

Such a light emitting diode element 45 is fixed to a dish-shaped receiving portion 46a formed on one terminal 46 as shown in FIG. 4, and the other terminal 47 is connected to the anode by wire bonding. To form a light emitting portion, and the light emitting portion is sealed with the transparent plastic of the light emitting member 41.
A large number of bubbles 42 are randomly enclosed in the light emitting member 41 as in the above-described embodiment. The light emitting member 41 is not limited to a spherical shape, and may have an appropriate shape such as a flat plate shape.

In this example, when the terminals 46 and 47 are energized and a positive voltage is applied to the anode and a negative voltage is applied to the cathode, the light emitting diode element 45 emits light. This illumination light is reflected upward by the receiving portion 46a of the terminal 46, penetrates through the transparent plastic, and irradiates a large number of bubbles 42.
A large number of air bubbles are floated up, and a large number of air 42 appear to emit light, enabling fantastic illumination. In this example, there is no base, and the terminals 46 and 47 are directly soldered to a wiring board or the like, so that mounting and energization are possible.

In the above-described embodiment, the light emitting member has a spherical shape, but the light emitting member is not limited to a spherical shape, and for example, as shown in FIG. 5A, a cylindrical light emitting member 50, As shown in FIG. 5B, the diamond-shaped light emitting member 51.
Etc., an appropriate shape can be adopted. In addition, an intermittent lighting circuit for lighting the LED in a pulse may be provided in the base so that the duty is changed by the supplied DC power source to perform the pulse lighting.

[0030]

As can be understood from the above description, in an illuminating lamp using the light emitting diode of the present invention, a large number of bubbles float up even when illuminated by a single light emitting diode, and a large number of bubbles shine and emit a large number of lights. Since it seems to have parts, it is possible to illuminate a large area fantastically. Moreover, it saves power and has excellent durability. Further, since the structure is simple and the manufacturing is easy, cost reduction can be achieved.

If the light emitting member is provided with a base, it can be easily turned on by inserting it into a socket to which an AC power is supplied, for example. When a plurality of light emitting diodes of different colors are used, it is possible to change the color and selectively turn on the light, and it is possible to mix the colors, so that more attractive lighting is possible. By providing a reflector and reflecting the light of the light emitting diode toward the light emitting member, the bubbles can be clearly lifted.

[Brief description of drawings]

1A is a cross-sectional view of an embodiment of an illuminating lamp using a light emitting diode according to the present invention, and FIG. 1B is a front view of the illuminating lamp shown in FIG.

FIG. 2 is a circuit diagram for lighting the illumination lamp of FIG.

3A and 3B show another embodiment of the present invention, in which FIG. 3A is a longitudinal sectional view, FIG. 3B is a sectional view taken along line AA of FIG. 3A, and FIG.
BB line sectional drawing.

FIG. 4 is an enlarged cross-sectional view of a main part showing still another embodiment of the present invention.

5A and 5B are perspective views of an illuminating lamp using another embodiment of a light emitting member, respectively.

FIG. 6 is a partially cutaway perspective view of a decorative light bulb using a conventional light emitting diode.

[Explanation of symbols]

1,1A Illumination lamp 10,10A Light emitting member 13,13A bubbles 15,15A LED (light emitting diode) 16,35 Substrate 17 Reflector 20, 30 Base 25 Lighting circuit 26 Voltage drop circuit 27 Rectifier circuit 40 Lighting 41, 51, 52 Light emitting member 42 air bubble 45 light emitting diode element

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F21Y 101: 02 F21S 1/02 G 5/00 Q

Claims (4)

[Claims] 1. An illuminating lamp using a light emitting diode, which comprises a light emitting member formed of a transparent plastic in which air bubbles are enclosed, and a light emitting diode for illuminating the light emitting member. 2. The illuminating lamp using the light emitting diode according to claim 1, wherein the light emitting member includes a base for supplying power to the light emitting diode. 3. An illumination lamp using a light emitting diode according to claim 1, wherein a plurality of the light emitting diodes having different colors are used. 4. An illumination using a light emitting diode according to claim 1, further comprising a reflector plate that reflects the illumination light emitted from the light emitting diode toward the light emitting member. light.