JPH1051035A - Two-color light-emitting element and two-color light-emitting sphere - Google Patents

Abstract

(57) Abstract: A two-color light-emitting element and a two-color light-emitting element having the same form as a normal one
A color luminous sphere is provided. A two-color light-emitting element includes two lead wires each having terminals of different polarities (terminals 11a and 12b and terminals 11b and 12a) of two LED elements 11 and 12 that emit light of different colors. (Electrodes) 13 and 14. The two-color light-emitting sphere 20 (see FIG. 2) is formed by enclosing the two-color light-emitting element 10 in a sphere 22 made of epoxy resin and drawing out two lead electrodes 23a and 23b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-color light emitting element having two lead wires and a two-color light emitting sphere having two electrodes.

[0002]

2. Description of the Related Art Conventionally, a two-color light emitting device as shown in the circuit diagram of FIG. This two-color light emitting element
As shown in Figure (a), light of different colors (for example, red and green)
The two LED elements 1 and 2 that emit light are connected to one of the terminals having the same polarity (in the figure, the plus-side terminals 1a and 2a).
a) is connected to one lead terminal 3, and the other terminals 1b and 2b of the same polarity are connected to independent lead terminals 4 and 5, respectively. When the two-color light-emitting element emits light by switching colors, by switching between relaying and disconnecting the power to the lead terminals 4 or 5 that are separately connected to terminals of the same polarity, the LED element 1 or Only one of the two can emit light.

FIG. 1 (b) is a view showing the appearance of a luminous bulb used when a two-color light-emitting element comprising the two LED elements 1 and 2 is put to practical use. The two-color light emitting sphere 6 shown in FIG. 2B is placed in a sphere 6a made of glass or synthetic resin.
(a) two LED elements 1 and 2 are sealed, and three lead wires 7, 8 and 9 connected to the three lead terminals 3, 4 and 5 are drawn out from the bottom thereof. I have. That is, in order to switch the emission color of the two-color light-emitting sphere 6, the lead wire 7 of FIG. 1B connected to the terminals 1a and 2a of the same polarity shown in FIG. Is connected to the positive side of the power supply, and the lead wires 8 and 9 of FIG. 1B are separately connected to the terminals 1b and 2b of the same polarity shown in FIG. In addition, by connecting / disconnecting the connection on the negative side of the power supply,
Light emission can be switched to red or green.

[0004]

By the way, generally, a luminous bulb, that is, a light bulb, is often configured to have a base having two electrodes. When the base is a base, two electrodes are constituted by a body (side part) of the base and a conductive member disposed on the bottom of the base via an insulating member.
Therefore, as described above, three lead wires (electrodes)
The luminous sphere having 7, 8 and 9 is generally a luminous sphere having an exceptional electrode configuration. On the socket side for mounting the luminous sphere having such an exceptional electrode configuration, the three electrode configuration of the luminous sphere 6 is provided. It is necessary to form a socket of an exceptional configuration having three electrode connections corresponding to the above. In recent years, a member such as a socket is usually mass-produced by molding using a mold. And such molds are unimaginably expensive.

[0005] Therefore, to prepare a socket having a three-pole configuration different from the commonly used socket having two electrodes for the two-color light emitting sphere,
An extremely heavy load is imposed at the manufacturing stage. In addition, the number of steps required to manage the type of parts must be increased in the parts distribution inventory stage. Such steps are the same in the sales management stage, and furthermore, unusual wiring must be configured at the site use stage. Must. Due to such complexity, the two-color light-emitting sphere is extremely inconvenient.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional circumstances,
An object of the present invention is to provide a two-color light emitting bulb that can be handled in the same manner as a normal light bulb.

[0007]

The structure of the two-color light emitting element and the two-color light emitting sphere according to the present invention will be described below. First, the two-color light-emitting device according to the first aspect of the present invention includes two LED devices that emit light of different colors, and the two LE devices.
2 in which terminals having different polarities of the D element are connected in common.
And two lead wires.

The two-color light-emitting sphere according to the second aspect of the present invention comprises two LED elements that emit light of different colors and terminals of the two LED elements having different polarities. And two LEs commonly connected to each other, and the two LEs
And a transparent sphere drawn out to the outside with the other ends of the two lead wires as electrodes, enclosing the D element.

The sphere has a surface formed in a ground glass shape, for example, as described in claim 3. Further, for example, the surface is formed as an irregular diamond-cut surface. Also, for example, fine particles of substantially the same quality as a sphere are adhered to the surface. In addition, for example, the light diffusion member is covered on the surface. Further, for example, as set forth in claim 7, two electrodes are provided on the bottom, the other ends of the lead wires are connected to the electrodes, respectively, and the two ends are fixed to the bottom of the sphere and detachably formed on an external socket. Base.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a diagram schematically illustrating a circuit configuration of a two-color light emitting element according to an embodiment. As shown in the figure, the two-color light-emitting element 10 connects two LED elements 11 and 12 that emit light of different colors to terminals having different polarities (a plus terminal 11 of the LED element 11).
a, the negative terminal 12b of the LED element 12, and LE
It has two lead wires (electrodes) 13 and 14 to which the minus terminal 11b of the D element 11 and the plus terminal 12a) of the LED element 12 are connected in common.

In order to cause the two-color light-emitting element 10 to emit light by switching colors, the polarity of a power supply connected to the two electrodes 13 and 14 of the two-color light-emitting element 10 is switched between positive and negative using an appropriate switch. Just need. As a result, one of the two LED elements 11 or 12 can emit light.

FIG. 1B is a diagram showing an application example of the above configuration, and shows an example in which two types of LED elements 11 and 12 are arranged in a plural number (four in the example shown). . This two-color light emitting element 10 'is formed by connecting the same type of LED elements 11 (or 12) in series, and connecting the series connected LED elements 11 (or 12).
The other LED element 12 (or 11) is connected in parallel with a different polarity in parallel with the one connected in series. Two lead wires 13 and 14 are respectively drawn from these parallel connection parts.
In the example shown in FIG. 2B, one of the parallel connection portions and the lead wire 13 are connected via the resistor 15.

As described above, the resistor 15 may be arranged in the two-color light emitting element 10 ', and the resistor 15 shown in FIG.
As shown in the color light emitting element 10, no resistor is arranged inside,
When connecting to an external power supply, an appropriate resistor may be interposed. Although a resistor is attached to such a light emitting element, in the following description, the resistor will be described without particular reference to avoid complication.

FIG. 2 shows the two-color light emitting element 10 (or 1).
0 ', hereinafter the same) is a diagram showing an example of a two-color luminescent sphere formed by using (a), a plan view thereof, (b) a sectional side view thereof, and (c) of FIG. Is a bottom view thereof. FIG.
As shown in (b) and (c), the two-color light-emitting sphere 20 is a sphere 22 made of epoxy resin having a flange 21 integrally formed at the bottom.
And two lead wires 23 a and 23, one end of which is embedded in the sphere 22 and the other end of which is pulled out of the sphere 22.
b and the two lead wires 23 embedded in the spherical body 22.
a and an LED chip 24 connected to one end of 23b. The two-color light emitting element 10 described above is provided on the LED chip 24.

The two-color light-emitting sphere 20 has two lead wires 2
By simply switching the polarity of the power supply connected to 3a and 23b between positive and negative using an appropriate switch, two emission colors are switched. Note that the diameter of the sphere 22 of the two-color light-emitting sphere 20 Ψ
Is about 3mm to 5mm for ordinary ones and 1 for large ones
When it is configured to be about 0 mm, it is easy to handle.

FIG. 3 illustrates four modified examples of the two-color light emitting sphere. FIGS. 7A and 7D are side sectional views, and FIGS. 7B and 7C are external side views. Figures (a) to (d)
Two-color light emitting spheres 20a, 20b, 20c and 20d shown in FIG.
Are spherical bodies 22 (22a, 22a) made of epoxy resin.
b, 22c, 22d), two lead wires 23a and 23b having one end embedded in the sphere 22 and the other end drawn out of the sphere, and one end of the two lead wires 23a and 23b. 2 and embedded in the spherical body 22 as shown in FIG. 2 (in FIGS. 2 (b) and 2 (c), the LED chips 24 are not visible because they are external side views). Have been. These two-color luminous spheres 20a-
As described above, the switching of the emission color of 20d only requires switching the polarity of the power supply connected to the two lead wires 23a and 23b between positive and negative using an appropriate switch.

Then, the two-color light emitting sphere 20a shown in FIG.
Is a ground glass-like shape processing 25 on the surface of the spherical body 22a.
Is applied by etching or molding. Therefore, the light emitted from the two-color light-emitting element 10 is refracted in a random direction at the interface with the air oriented in a random direction on the surface of the sphere 22a shaped like ground glass, and is emitted to the outside and remains. The parts are reflected internally in random directions. At the interface of the surface of the sphere 22a in the reflection direction which faces in a random direction, it is repeated that a part is refracted in a random direction and radiated to the outside, and the remaining part is randomly reflected to the inside. Thereby, the directional light emission of the LED element 11 or 12 constituting the two-color light emitting element 10 mounted on the LED chip 24 originally has a strong radiation angle in the whole spherical direction excluding the bottom direction of the sphere 22a. To be radiated.

Next, a two-color light emitting sphere 20b shown in FIG.
The irregular diamond cut surface 26 is engraved or molded on the entire surface of the sphere 22b. Also in this case, the two-color light emitting element 1
The light emitted from 0 is repeatedly reflected irregularly in and out at the randomly oriented interface of the irregular diamond-cut surface 26 on the surface of the sphere 22b. Light emission is diffused and emitted in all spherical directions except the bottom direction of the sphere 22b.

Further, a two-color light emitting sphere 20c shown in FIG.
Is formed by applying innumerable fine particles 27 of substantially the same quality as the sphere 22c over the entire surface of the sphere 22c with a resinous adhesive or the like.
Also in this case, the light emission of the two-color light emitting element 10 is irregularly reflected at the irregular interface of the fine particles 27 on the surface of the sphere 22c, and
Light is emitted in all spherical directions except the bottom direction of 2c.

The two-color luminous bulb 20d shown in FIG.
Is formed by attaching a cap member 28 having light diffusing properties to the entire surface of the spherical body 22d. The light diffusing property of the cap member 28 may be formed in any manner. For example, FIG.
It may be processed into a surface structure as shown in (b) or (c).
Also in this case, the light emitted from the two-color light emitting element 10 is diffused by the light diffusivity of the cap member 28 attached to the sphere 22d, and the light is emitted in the entire spherical direction except for the bottom direction of the sphere 22d.

FIG. 4 is a view showing another embodiment of the two-color light emitting sphere. 3A, 3B, and 3C show the two-color luminescent sphere 20 shown in FIG. 2 or the two-color luminescent spheres 20a, 20b, 20c, and 20d shown in FIGS. 3A to 3D. 3 shows an example in which a base (base) for inserting a socket is fixed to the bottom of the base. Two-color luminous sphere 20 (or 20a, 20b, 20
The diameter φ1 of c, 20d) is about 3 to 5 mm.

FIG. 2A shows an example of a normal screw-in type base 31, and FIG. 1B is attached to a socket by engaging bosses 32-1 and 32-2 just below the body and twisting. An example of a possible base 32 is shown. In each case, the body 31a or 32a of the base forms one electrode, and the conductive member 31c or 32c protruding from the center of the insulating member 31b or 32b below the base forms the other electrode.

FIG. 1C shows an example of a base 33 having a shape generally used for a glow lamp of a fluorescent lamp. The body of the base 33 need not be metal. That is, it may be a synthetic resin or ceramics. Two terminals 33a and 33c protruding from the insulating member 33b below the base 33 also serve as an engagement boss between the two electrodes and the socket.

FIG. 2D shows an example of the socket. Although only one socket 34 is shown in FIG. 3D, the base 3 shown in FIGS. 3A, 3B and 3C is actually shown.
1. Although not particularly shown, the structure inside the socket is different depending on the base 32 or the base 33. From the lower part of the socket 34, two lead wires 35 and 36 corresponding to two electrodes of a base and a base to be inserted thereinto are provided.
Has been pulled out. These two lead wires 35 and 36 are connected to a power supply via an appropriate conductive member such as a wiring.

As described above, the two-color light-emitting sphere 20 (or 20
a, 20b, 20c, 20d) are bases (bases) composed of two electrodes which are no different from ordinary bulbs
Can be fixed.

FIGS. 5 (a), 5 (b) and 5 (c) show the above-mentioned FIGS.
(b), (c) the two-color luminous sphere 20 (or 20a, 20b, 20
c, 20d) shows an example using a slightly larger diameter (shown as a two-color light emitting sphere 20 'in FIG. 5). The diameter φ2 in this case is about 10 mm.

In any of the above cases, the luminescent color can be switched only by switching the polarity of the power supply to the two-color luminescent bulb with a switch or the like.

[0028]

As described above, according to the present invention,
Since the electrodes having different polarities of the two LED elements that emit light of different colors are connected to each other to form electrodes, the switching of the emission color can be realized only by inverting the polarity of the bipolar power supply. Neither the configuration for connecting to the wiring nor the method of attaching to the wiring is the same as a normal light emitting element or a light bulb, and thereby it is possible to provide a two-color light-emitting element and a two-color light-emitting bulb that are easy to handle. Become.

[Brief description of the drawings]

FIG. 1A is a diagram schematically illustrating a circuit configuration of a two-color light emitting element according to an embodiment, and FIG. 1B is a diagram illustrating an application example thereof.

FIGS. 2A and 2B are diagrams illustrating an example of a two-color light-emitting sphere formed using a two-color light-emitting element according to an embodiment, where FIG. 2A is a plan view, FIG. It is a bottom view.

FIG. 3 is a view showing four modified examples of a two-color light emitting sphere, wherein (a) and (d) are side sectional views, and (b) and (c) are external side views.

FIGS. 4 (a), (b), and (c) are diagrams showing three examples in which a base (base) for inserting a socket is fixed to the bottom of a two-color light emitting sphere, and (d) is an example of a socket. FIG.

5 (a), 5 (b) and 5 (c) are diagrams showing an example in which a large-diameter luminescent sphere of FIG. 4 is used.

6 (a) is a circuit diagram showing a configuration of a conventional two-color light emitting element, and FIG. 6 (b) is a diagram showing an appearance of a light emitting sphere enclosing the two-color light emitting element.

[Explanation of symbols]

 1, 2 LED element 1a, 2a Positive terminal 1b, 2b Negative terminal 3, 4, 5 Lead terminal 6 Two-color luminous bulb 6a Sphere 7, 8, 9 Lead wire (electrode) 10, 10 'Two-color luminous element 11 , 12 LED element 11a, 12a Positive terminal 11b, 12b Negative terminal 13, 14 Lead wire (electrode) 15 Resistance 20, 20a, 20b, 20c, 20d Two-color light emitting bulb 21 Flange 22, 22a, 22b, 22c, 22d Spheres 23a, 23b Lead wire 24 LED chip 25 Ground glass-like processed surface 26 Irregular diamond cut surface 27 Fine particles 28 Light diffusing cap member 31 Screw-in base 31a, 32a Body (electrode) 31b, 32b, 33b Insulating member 31c , 32c conductive member (electrode) 32 plug-in base 32-1, 32-2 engaging boss 3 base 33a, 33c terminal 34 socket 35, 36 lead wire

Claims (7)

[Claims] 1. An LED device comprising: two LED elements that emit light of different colors; and two lead wires each having one end of each of the two LED elements having different polarities connected to one end. A two-color light emitting device characterized by the above-mentioned. 2. Two LED elements which emit light of different colors, two lead wires each having one end of each of the two LED elements having different polarities connected to one end, and A two-color light emitting sphere comprising: a transparent sphere enclosing an LED element and drawn out to the outside using the other ends of the two lead wires as electrodes. 3. The two-color luminous sphere according to claim 2, wherein the sphere has a frosted glass surface. 4. The two-color luminous sphere according to claim 2, wherein the sphere has an irregular diamond-cut surface. 5. The two-color luminous sphere according to claim 2, wherein said sphere has fine particles substantially the same as said sphere adhered to the surface thereof. 6. The two-color luminous sphere according to claim 2, wherein the sphere has a surface covered with a light diffusing member. 7. The base has two electrodes on the bottom thereof, the other ends of the lead wires are connected to the electrodes, and the base is fixed to the bottom of the sphere and detachably formed on an external socket. Claims 2 and 3 characterized by comprising:
The two-color light-emitting sphere according to 4, 5, or 6.