JPH11203926A - Surface light-emitting lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lighten a burden of the self-weight of a light-emitting element, by supporting both end parts of the light-emitting element by hard tube bodies. SOLUTION: A light-emitting element 21 and a light-transmitting hard tube body 22 surrounding an outer surface thereof are combined integrally with each other by fittings 22. The fittings 12 are made by molding a rubber-like, relatively soft, synthetic resin and the hard tube body 22 is loosely press-fitted into a cylindrical inner-surface hole 12a of each of the fittings 12. An end part of a light-emitting component 23 on the side of a lead wire 23a abuts on a bottom part of a tubular body 24 and a light-emitting surface 23b abuts on an end part of the light-emitting element 21. The light-emitting component 23 is immovably sandwiched between the bottom part of the tubular body 24 and the end part of the light-emitting element 21. Positional relation between the light-emitting element 21 and the hard tube body 22 is fixed by loosely press-fitting an outer surface of the tubular body 24 into a cylindrical wall body 12b projectingly provided on a middle part of each of the fittings 12 while the end part of the light-emitting element 21 is held by the hard tube body 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface light-emitting lamp suitable for use as a nightlight, an emergency light, or a gate light by projecting light onto an end of a translucent rod-shaped light-emitting body to emit light. .

[0002]

2. Description of the Related Art Conventionally, as a light emitting device using a light emitting element as a light source, as shown in FIG. A light-emitting element C having a light-emitting element C and a light-emitting element D attached to the end of the light-emitting element C is commercially available, and is known to continue to emit light for a long time with a small amount of power by a battery. On the other hand, in recent years, an ultra-high-brightness light-emitting element has been developed and can emit extremely bright light, so that applications for brighter light emission have been opened even if the length of the synthetic resin tube A is longer. .

[0003]

However, since the light-emitting element is made of a relatively soft synthetic resin that is wound around a reel and distributed, and is cut into a required length as a product, the light-emitting element is used. The rigidity of the material cannot be increased, and the material may be deformed by its own weight, so that it has been difficult to use the material for a product requiring a long light emitting surface.

[0004]

An object of the present invention is to provide a light-emitting element made of a translucent synthetic resin bar, a light-transmitting hard cylinder surrounding the outer periphery of the light-emitting element, and a light-emitting element. The light-emitting element is provided at both ends, and the both ends of the light-emitting element are supported by the hard cylinder. Further, it is preferable that the light-emitting element and the hard cylinder are connected to each other via an attachment for attaching the light-emitting element and the rigid cylinder to a member to be attached. Further, it is preferable that the light emitting elements arranged at both ends of the light emitting element are connected to each other by an electric wire arranged on the inner surface of the hard cylinder.

[0005]

According to a first aspect of the present invention, both ends of the light emitting element are supported by a rigid cylinder in a predetermined posture, so that the load of the light emitting element on its own weight is reduced. Claim 2 The light emitting element and the hard cylinder are mutually connected and integrated by a fixture. Claim 3 The light-emitting elements provided at both ends of the light-emitting element are connected by an electric wire that is routed the shortest distance through the inside of the hard cylinder. The wire is protected from external forces by a rigid cylinder,
Electric wires are not visible due to surface emission.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes one type of a surface-emitting lamp, specifically, a so-called gate light which is installed outside the entrance and illuminates the vicinity of an entrance of a house. Gate light 1 according to this embodiment
Reference numeral 0 denotes a pair of upper and lower upper and lower attachments 12 attached to an outer wall 11 of the house.
The lamp body 20 is supported between 2 and 12.

As shown in FIG. 2, the lamp body 20 includes a rod-shaped light emitting element 21 extending vertically and a light-transmitting hard cylinder surrounding its outer surface, that is, a cylindrical protective cover 22 made of glass. And both are integrally connected by the attachment 12. The protective cover 22 is obtained by cutting a commercially available glass tube into a predetermined length. The light emitting element 21 is obtained by cutting a commercial product of a milky white translucent synthetic resin rope having a diameter of about 7 mm into a predetermined length, which is cut into a length corresponding to the lamp body 20 for use. The attachment 12 is made by molding a relatively soft rubber-like synthetic resin, and the protective cover 22 is loosely pressed into the cylindrical inner surface hole 12 a of the attachment 12.
Light emitting elements 23 are attached to both ends of the light emitting element 21.

The light emitting element 23 is sandwiched between the end of the light emitting element 21 and the bottom of the cylindrical body 24 fitted to the end. The cylindrical body 24 is made of metal and has an outer diameter of about 8
It has a cup shape with a length of about 15 mm and a length of about 15 mm, and is provided with hard chrome plating. The through hole 2 is provided at the bottom of the cylindrical body 24.
4a is opened, a lead wire 23a of the light emitting element 23 is drawn out through the through hole 24a, and the bottom of the light emitting element 23 is directly supported on the bottom of the cylindrical body 24. The opening that opens at the other end of the tubular body 24 is formed to be slightly smaller than the outer diameter of the light emitting element 21, and the end of the light emitting element 21 is lightly pressed into the opening.

Thus, the end of the light emitting element 23 on the lead wire side is in contact with the bottom of the cylindrical body, and the light emitting surface 23b is in contact with the end of the light emitting element 21. Therefore, the light emitting element 23
Is fixedly held between the bottom of the tubular body 24 and the end of the light emitting element 21. The end of the light emitting element 21 thus treated is attached to the outer surface of the cylindrical body 24 by the mounting fixture 12.
Is loosely pressed into a cylindrical wall 12b protruding from the center of the light emitting element, the positional relationship between the light emitting element 21 and the protective cover 22 is determined, and the light emitting element 21 is held by the protective cover 22.

Note that the light emitting element 23 is
The means for supporting at the end of is not limited to those described above. For example, as shown in FIG.
It is also possible to fit the light emitting element 21 on a cylindrical wall 12b formed on the fixture 12. In the figure, reference numeral 25 denotes a light-shielding tape wound around the outer surface of the end of the element 21.

The surface emitting lamp 10 configured as described above is lit when the upper and lower light emitting elements 23, 23 are connected to a power supply 30 and energized by a lighting switch 31,
Turns off when shut off. The upper and lower light emitting elements 23 are connected to each other by an electric wire 32 disposed inside the protective cover 22.
And any connection in series or parallel is possible. Further, since the light emitting element 23 itself is a semiconductor and has a rectifying function, the light emitting element 23 can be turned on by any of the AC and DC currents. FIG. 2 shows an example in which two light emitting elements 23 are connected in series, and FIG. 4 shows an example in which they are connected in parallel.

Further, as shown in FIG. 5, the light emitted from the light emitting element 23 is converged as a whole in the axial direction. The light emitted from the light emitting surface 23b of the light emitting element 23 includes light a traveling in the optical axis direction, light b slightly deviating from the optical axis direction, and light c largely deviating from the optical axis direction. Also,
Even if the light travels in the direction of the optical axis, some of the light d and e may diffusely deviate from the direction of the optical axis due to irregular reflection while traveling through the translucent material of the light emitting element 21. Among them, the light c and d are The light-emitting element 2 is blocked by the light-shielding cover 25.
Only the light a that travels in the axial direction and the light b that slightly deviates from the optical axis direction travel to the position off the light shielding cover 25, and are converged into a light beam traveling in the axial direction. A part e of the light that has turned into a light flux exits from the outer surface of the light emitting element 21 to the outside due to irregular reflection, and the light emitting element 2
1 is caused to emit light.

[0013]

According to the first aspect of the present invention, since the light emitting element is used as the light source, the power consumption is small and it is economical. In addition, the light color can be changed depending on the type of the light emitting element and the commercial value is enhanced. be able to. Further, the light emitting element is made of a lightweight synthetic resin and is supported by the protective cover, so that the light emitting element is not easily deformed, and is lightweight and easy to manufacture and handle. In addition, if the electric wires connecting the light emitting elements arranged at both ends of the light emitting element are passed through the inside of the hard cylinder, the wiring becomes simple, and the electric wires are covered by the hard cylinder. According to the second aspect of the present invention, the structure of the surface light emitting lamp can be simplified without requiring any special coupling for connecting the light emitting element and the hard cylinder. According to the third aspect of the present invention, since the electric wiring is inside the insulator, it is not affected by the weather and the insulating coating is simple, so that the manufacturing cost is low. In addition, the number of wirings is reduced as compared with the case where the electric wires are separately taken out, so that it is not necessary to perform wiring in the surface light emitting body at work on site, and the work becomes easy. And so on.

[Brief description of the drawings]

FIG. 1 is a side view of a gate light which is an example of a surface light emitter.

FIG. 2 is a sectional view taken along the line II-II.

FIG. 3 is a sectional view corresponding to FIG. 2, showing another embodiment.

FIG. 4 is a circuit diagram showing an electric lighting circuit.

FIG. 5 is a principle diagram showing a light emission principle.

FIG. 6 is a sectional view of a conventional light emitting device.

[Explanation of symbols]

10 ··· Surface emitting lamp (gate lamp) 11 ··· Outer wall of house 12 ··· Mounting tool 12a ··· Cylindrical inner surface hole 12b ··· Cylindrical wall body 20 ··· Light Body 21: Light emitting element 22: Hard cylinder (protective cover) 23: Light emitting element 23a: Lead wire 23b: Light emitting surface 24: Cylindrical body 24a: · Through hole 25 · · · · Light shielding cover (light shielding tape) 30 · · · Power supply 31 · · · Lighting switch 32 · · · Electric wire

Claims (3)

[Claims] 1. A light-emitting element made of a translucent synthetic resin bar, a light-transmitting hard cylinder surrounding the outer periphery of the light-emitting element, and light-emitting elements disposed at both ends of the light-emitting element. A surface-emitting lamp comprising a light-emitting element, wherein both ends of the light-emitting element are supported by the hard cylinder. 2. A surface-emitting lamp according to claim 1, wherein said light-emitting element and said hard cylinder are connected via an attachment for attaching said light-emitting element and said hard cylinder to a member to be attached. 3. The surface-emitting lamp according to claim 1, wherein the light-emitting elements disposed at both ends of the light-emitting element are connected to each other by electric wires disposed on the inner surface of the hard cylinder.