JP3075532B2 - Luminous device - Google Patents

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 using a light emitting diode (LED) as a light source.
The present invention relates to a light emitting device that can efficiently obtain a uniform light emitting state as a whole with a small number of light emitting diodes, and is suitable for a signal light, a warning light, a guide light, and the like.

[0002]

2. Description of the Related Art A bar-shaped hand-held warning light is used for traffic control in road construction at night. As shown in FIG. 9, the warning light has a grip B attached to a lower part of a rod-shaped light emitting device A.
In the light emitting device A, a plurality of light emitting diodes C as light sources are housed in a transparent cylindrical cover case D.

In the light emitting device A, as shown in FIG. 10, a rod-shaped support member E having a triangular cross section is disposed at the center of a cylindrical cover case D. Each surface of the supporting member E has a plurality of light emitting diodes C
Are arranged at predetermined intervals along the longitudinal direction.

[0004]

In the light emitting device A described above, although the inner surface of the cover case D is provided with irregularities for irregularly reflecting light, light diffusion is not sufficient. Since the light emitted from each of the light emitting diodes C merely passes through the cover case D and looks like a dot, even if a large number of light emitting diodes C are built in, an overall uniform light emitting state can be obtained. However, there is a problem that visibility is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light emitting device which can efficiently obtain a uniform light emitting state as a whole with a small number of light emitting diodes.

[0006]

In order to achieve the above object, a light emitting device according to a first aspect of the present invention comprises a transparent cylindrical cover.
-Several light emitting diodes are built in the case as light sources.
Light-emitting device, and a bullet
Lights on wire support frame built-in as a support leg
Multiple diodes and conical mirrors are supported respectively.
Each of the light emitting diodes has a state in which the optical axes are substantially aligned.
And the conical mirror is
Light emitting diode at the top in front of the light emitting direction of the photodiode
Light-emitting diodes
Are arranged so as to reflect the projection light in the radiation direction.
It is characterized by having. The conical mirror has a light emitting device.
Irradiation that reflects the iodine light and irradiates the cover case
It is preferable to arrange the lights so that the lights partially overlap. This departure
In an optical device, each conical mirror has its own light emitting diode.
To reflect the light emitted from the
A uniform light emitting state is obtained for the body.

[0007] Further , the luminous device according to the second invention is the same as the luminous device.
Light-emitting device, with multiple
Light-emitting device with a built-in light-emitting diode
Inside the cover case as elastic support legs.
Stored wire support frame with light emitting diodes and cones
A plurality of cap-shaped lenses are supported, respectively,
Each light emitting diode is linear with the optical axis substantially aligned
And the conical cap-shaped lens is
Light emitting diode at the top in front of the light emitting direction of the photodiode
Light-emitting diodes
So that the light is refracted in the
It is characterized by being provided. The conical cap shape
The lens refracts the light emitted from the light emitting diode in the radiation direction.
It is preferable to arrange so that the irradiation light
Good. In this light emitter device, each conical cap shape
A lens refracts the light emitted from each light emitting diode in the radiation direction.
Therefore, a uniform light emission state can be obtained over the entire cover case.
You.

[0008] Furthermore, the luminous device according to the third aspect of the present invention,
Similar luminous device, transparent box or tube
Multiple light-emitting diodes inside the cover case
A light-emitting device incorporated therein, wherein each of said light-emitting diodes
Cards are linearly arranged with their optical axes substantially aligned.
In front of the light emitting direction of each light emitting diode,
A circular arc mirror that diffuses and reflects light
It is characterized by the following. In this light emitting device, a band-shaped circle
An arc mirror diffuses and reflects the light emitted from each light emitting diode.
As a result, uniform light emission on one side of the cover case as a whole
The state is obtained.

The luminous device according to the first to third inventions
A red light transmissive sheet is attached to the inner surface of the cover case.
It is preferred that

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A luminous device according to the present invention will be described below with reference to the drawings. FIG. 1 shows a light emitting device 1 according to the first embodiment. The luminous body device 1 is formed in an elongated cylindrical shape, and a resin grip 2 is connected to one end of the luminous body device 1 to form a hand-held warning light 3.

The luminous device 1 is, as shown in FIG.
A plurality of light emitting diodes 5 are incorporated as light sources in a cylindrical cover case 4 made of a transparent resin, and each of the light emitting diodes 5 is covered with the cover case 4 with the optical axis substantially aligned.
Are arranged at predetermined intervals in a straight line at the center. Soshi
In front of each light emitting diode 5, the light emitting direction is
Mirrors 6 that reflect light in the radial direction are provided.
And the apex of the conical mirror 6 and the light emitting diode
And is substantially coaxial with the arm 5.

The light emitting diodes 5 are red light emitting diodes, and the inner surface of the cover case 4 is provided with a red light so that a uniform red light emitting state can be obtained by emitting light from each of the light emitting diodes 5. The transparent sheet 7 is stretched (see FIG. 2). In the cover case 4, a support frame 8 made of wire is built in to support the conical mirrors 6 and the light emitting diodes 5 at the center.

As shown in FIG. 3, the conical mirror 6 is made of a synthetic resin in which a mirror surface is plated on a conical surface 6A, and a fitting hole 6C is formed in the center of the bottom surface 6B. ing. As shown in FIG. 4, on the conical surface 6A of the conical mirror 6, three holding claws 6D are arranged at equal intervals in the circumferential direction and protrude along the axis.
The light-emitting diode 5 is held at the tips of the three holding claws 6 </ b> D in a state where the light emitting direction is directed to the apex of the conical mirror 6. The conical mirror 6 is
It is a size that is not inscribed in the
Reflects light.

The support frame 8 has a rectangular shape surrounding a pair of conical mirrors 6 and light-emitting diodes 5, and is formed in a continuous shape. A portion of the conical mirror 6 facing the bottom surface 6A has a conical shape. A support projection 8A that fits into the fitting hole 6C of the mirror 6 and supports the conical mirror 6 is provided in a protruding manner. The support frame 8 is supported on the inner surface of the cover case 4 via a plurality of elastic support legs 8B.

The lead wire 5A of each of the light emitting diodes 5 is appropriately wound around the support frame 8 using the support frame 8 as a guide member, and is connected to a battery (not shown) disposed in the grip 2 via a switch. They are connected in parallel. Each light emitting diode 5 is turned on when the switch is turned on.

In the light emitting device 1 of the first embodiment configured as described above, when a switch (not shown) is turned on, each light emitting diode 5 turns on. The light emitted from each light emitting diode 5 is reflected in the radial direction by the conical surface 6A of each conical mirror 6, as shown in FIG.
The light is applied to the cover case 4 via the red light transmitting sheet 7. That is, in the example shown in FIG. 5, the light from the light emitting diodes 5 radially reflected by the respective conical mirrors 6 uniformly emits a red light from the entire cover case 4, resulting in good visibility. Is obtained. Then, the light emitted from each light emitting diode 5 is irradiated on the cover case by the conical mirror 6 so as to partially overlap.
The whole is in a light emitting state, and better visibility is obtained.

Next, a light emitting device according to a second embodiment will be described. This light-emitting device is configured substantially the same as the light-emitting device 1 of the first embodiment shown in FIG. 1, and therefore, in the following description, the same components are denoted by the same reference numerals. Detailed description is omitted.

As shown in FIG. 6, the light emitting device 9 of the second embodiment includes a plurality of light emitting diodes 5 in a cover case 4.
Is a light-emitting device built in as a light source. Each light-emitting diode 5 is linearly arranged at the center of the cover case 4 with the optical axis substantially aligned. In front of the light direction, a conical cap-shaped lens 10 for refracting the projected light in the radiation direction is disposed so as to be substantially coincident with the optical axis of the light emitting diode. A red light transmitting sheet 7 is stretched on the inner surface of the cover case 4, and a support frame 8 is built in the cover case 4.

The conical cap-shaped lens 10 is a conical cap-shaped lens in which a plurality of micro lenses are formed on the inner surface by a transparent resin. 8A is supported by the support frame 8. Also, the conical cap-shaped lens 10 supports the light emitting diode 5 at the center with the light emitting direction directed to the vertex side by sandwiching the light emitting diode 5 between three holding claws 10B formed on the inner surface thereof. are doing.

In the light emitting device 9 of the second embodiment configured as described above, when a switch (not shown) is turned on, each light emitting diode 5 turns on. Then, the light emitted from each light emitting diode 5 is refracted in the radiation direction by each conical cap-shaped lens 10 as shown in FIG. 7 and irradiates the cover case 4 via the red light transmitting sheet 7. That is, in the example shown in FIG. 7, the entire cover case 4 uniformly emits red light by the light emitted from each light emitting diode 5 radially refracted by each conical cap-shaped lens 10. Property is obtained.

Next, a light emitting device according to a third embodiment will be described. As shown in FIG. 8, the light emitting device 1 of the third embodiment
Reference numeral 1 denotes a light emitting device in which a plurality of light emitting diodes 5 are incorporated as light sources in a box-shaped cover case 12 made of a transparent synthetic resin. Each light-emitting diode 5 is fixed at a predetermined interval to a support bar 13 disposed inside the cover case 12 along the longitudinal direction of the cover case 12, so that the light-emitting diodes 5 are linearly arranged with the optical axes aligned in parallel. I have. In front of each light emitting diode 5 in the light projection direction, a belt-shaped circular mirror 14 for diffusing the light and reflecting the light toward the front side of the cover case 12 is provided.

In the light emitting device 11 of the third embodiment configured as described above, each light emitting diode 5 turns on when a switch (not shown) is turned on. Then, as shown in FIG. 8, the light emitted from each light emitting diode 5 is diffused and reflected toward the front side of the cover case 12 by the belt-shaped arc mirror 14. That is, in the example shown in FIG. 8, the light emitted from each light-emitting diode 5 that is diffused and reflected by the belt-shaped
The entire front surface of the device is uniformly illuminated in red, so that good visibility can be obtained.

In the light emitting device 1 of the first embodiment and the light emitting device 9 of the second embodiment, the cylindrical cover case 4 can be changed to a conical cylindrical cover case. In this case, a pylon can be used by attaching a base member for installation.

[0024]

As described above, according to the light emitting device of the first aspect, each conical mirror disposed in front of each light emitting diode in the light emitting direction emits light from each light emitting diode in the light emitting direction. , It is possible to efficiently obtain an overall uniform light emitting state with a small number of light emitting diodes,
Good visibility is obtained.

According to the light emitting device of the second aspect, each of the conical cap-shaped lenses disposed in front of each light emitting diode in the light emitting direction refracts the light emitted from each light emitting diode in the radiation direction. In addition, a uniform light emitting state can be efficiently obtained with a small number of light emitting diodes, and good visibility can be obtained.

Further, according to the light emitting device of the third aspect, the belt-shaped arc mirror disposed in front of each light emitting diode in the light emitting direction diffuses and reflects the light emitted from the light emitting diode. A uniform light emitting state can be efficiently obtained with a small number of light emitting diodes, and good visibility can be obtained.

In the luminous device according to the first to third aspects of the present invention, when a red light transmitting sheet is provided on the inner surface of the cover case, the light from each of the light emitting diodes emits a uniform red light. A light emitting state can be obtained, and good visibility can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing a warning light to which a light emitting device according to a first embodiment of the present invention is applied, with a part of the light emitting device cut away.

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

FIG. 3 is a side view showing a connection structure between the conical mirror and the light emitting diode shown in FIG. 1;

FIG. 4 is a view taken in the direction of the arrow IV in FIG. 3;

FIG. 5 is a cross-sectional view showing a light emitting area from a light emitting diode in the light emitting device of the first embodiment.

FIG. 6 is a partially cutaway front view showing the internal structure of the light emitting device of the second embodiment.

FIG. 7 is a partial cross-sectional view showing a light emitting region from a light emitting diode in the light emitting device of the second embodiment.

FIG. 8 is a longitudinal sectional view showing the internal structure of the light emitting device of the third embodiment.

FIG. 9 is a front view showing the entire structure of a warning light to which a conventional light emitting device is applied.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

[Explanation of symbols]

 1: luminous body device 2: grip 3: warning light 4: cover case 5: light emitting diode 5A: lead wire 6: conical mirror 6A: conical surface 6B: bottom surface 6C: fitting hole 6D: pinching nail 7: red light transmission Sheet 8: Support frame 8A: Support projection 8B: Elastic support leg 9: Light-emitting device 10: Conical cap-shaped lens 10A: Fitting hole 10B: Clamping claw 11: Light-emitting device 12: Cover case 13: Support bar 14: Belt Arc mirror

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 63-44310 (JP, U) Japanese Utility Model Sho 61-190157 (JP, U) Japanese Utility Model Sho 61-183005 (JP, U) Japanese Utility Model Sho 62- 78770 (JP, U) Japanese Utility Model 4-763 (JP, U) Japanese Utility Model 2-49007 (JP, U) Japanese Utility Model 4-68301 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) F21V 13/00 F21L 4/00

Claims (6)

(57) [Claims] 1. A method according to claim 1, wherein a plurality of light emitting elements are provided in a transparent cylindrical cover case.
A light emitting device with a built-in photodiode as a light source
There is a built-in elastic support leg inside the cover case.
Light-emitting diodes and cone-shaped
Each of the light emitting diodes is supported
Cards are linearly arranged with their optical axes substantially aligned.
The conical mirror is not inscribed in the cover case
The size of each light emitting diode
With the vertex almost aligned with the optical axis of the light-emitting diode
The light emitted from the light emitting diode is reflected in the radiation direction.
Light-emitting device, wherein the light-emitting devices are arranged as described above . 2. The light-emitting diode of claim 2, wherein said conical mirror is
The irradiation light that reflects the projection light and irradiates the cover case partially overlaps.
2. The arrangement according to claim 1, wherein
On-board luminous device. 3. A plurality of light emitting dies in a transparent cover case.
An illuminator device with an ode built in as a light source.
And built-in elastic support legs inside the cover case
Light-emitting diode and conical cap on wire support frame
A plurality of lens-shaped lenses are supported, and each of the light emitting
Iodes are arranged linearly with their optical axes almost aligned.
Wherein the conical cap-shaped lens has a cover case.
The size of the light emitting diode
The vertex is approximately the same as the optical axis of the light-emitting diode in the forward direction.
The light emitting diodes emit light in the emission direction.
A light-emitting device, which is provided so as to be refracted and irradiated . 4. The light emitting die according to claim 1, wherein said conical cap-shaped lens is a light emitting die.
The irradiation light that refracts the light of the Aether
The light emitting device according to claim 3, wherein the light emitting device is arranged so as to partially overlap . 5. A transparent box-shaped or cylindrical cover case.
Multiple light-emitting diodes in the
Light emitting device, wherein each of the light emitting diodes has an optical axis.
Are arranged in a straight line with approximately matching
In front of the light emitting direction of the diode, the light is diffused and
A luminous body device comprising a belt-shaped arc mirror to be radiated . 6. An inner surface of the cover case has a red light transmitting surface.
2. An excess sheet is provided.
The light-emitting device according to any one of claims 5 to 10 .