JP2001210106A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire that can set a light emitting area freely to some extent with a small number of light sources, and can prevent glare consuming less power without uneven brightness. SOLUTION: This luminaire comprises a slim light guide 1 which has light incident planes at both ends in its length direction, a light emitting front surface 1b in between with a rough back surface, and light source 2 directed to face the incident planes of the light guide 1. It can be embedded where it is used and fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture mounted and used in the vicinity of a portion to be illuminated, and more particularly to a lighting fixture mounted on a wall surface, a skirting board, a step of a stair, or the like to illuminate the area around a foot.

[0002]

2. Description of the Related Art FIG. 14 is an exploded perspective view showing a lighting device of a conventional foot lighting system, which illuminates a foot of a stair or a corridor. In the figure, 31 is a light source unit, 3
2 is a light source built-in portion, 33 is a cover body, 3 is wiring for supplying power to the light source 2, 34 is a parting edge member provided with a wiring space 35, and the light source unit 31 is attached.

As shown, a light source built-in portion 32 of a light source unit 31 has a plurality of light sources 2 such as LEDs arranged in a longitudinal direction in an opening 32a, and emits light like a linear light source. The cover body 33 is made of, for example, milky white acrylic, and makes the light from the light source 2 uniform. Then, the light source unit 31 is fitted and attached to the opening of the parting edge member 3 or the step side plate member, and the feet are illuminated by the uniform band-shaped radiation light from the light source 2 transmitted through the cover body 33 of the light source unit 31. You.

[0004]

In the above-mentioned conventional luminaire, it is necessary to arrange a plurality of light sources in order to radiate light like a linear light source and lengthen a light emitting portion. There is a problem that power consumption is high and productivity is low. Further, when the light emitting distance is increased, power consumption is further increased and productivity is further deteriorated, so that there is a problem that the light emitting distance cannot be increased. In addition, there is a problem that light emission unevenness occurs depending on the number of light sources. Further, there is a problem that the light source is illuminated because the irradiation direction is forward.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to freely set the light emitting area to a certain extent with a small number of light sources, to increase the light emitting distance or to make the shape according to the shape of the mounting place. It is an object of the present invention to obtain a lighting device which can be applied, has a wide application range, consumes little power, has less uneven light emission, and can prevent glare.

[0006]

According to the present invention, there is provided an illuminating apparatus which has an elongated surface having an entrance surface at both ends in a longitudinal direction, an exit surface between the entrance surfaces, and a rough surface on a back surface opposite to the exit surface. And a light source whose irradiation direction is arranged toward the incident surface of the light guide member, and is used by being embedded in a mounting portion.

Further, the light guide member has a shape bent between the incident surfaces.

Further, the light guide member is formed in a prismatic shape, and the light exit surface is formed as two adjacent surfaces of the prism.

Further, the light emitting member has a curved exit surface.

Further, a support hole for supporting the light source is provided on the incident surface of the light guide member.

Further, the light guide member is covered with a highly reflective sheet on a surface other than the entrance surface and the exit surface.

The light source uses an LED.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a perspective view of a lighting apparatus according to Embodiment 1 of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is a perspective view of a main part of FIG. 2, and FIGS. is there. 1 to 3, reference numeral 10 denotes a lighting device according to the present invention.
1 is an incident surface 1 on which light of the light source 2 is incident on both end surfaces in the longitudinal direction.
a, an elongated light guide member having an outgoing surface 1b between the incident surfaces 1a, 1a and a rough surface 1c on a back surface opposite to the outgoing surface 1b; 3, wiring for supplying power to the light source 2; Is a relay connector that is connected to the wiring and connects a plurality of lighting fixtures 10.

Reference numeral 5 denotes a case for accommodating the light guide member 1, the light source 2 and the wiring 3, and is provided with mounting plates 21 and 22 for mounting the light guide member 1 and the light source 2, respectively. Reference numeral 6 denotes a cover for covering the opening of the case 5, and an opening 6a is provided so that the emission surface 1b of the light guide member 1 is exposed. The light source 2 mainly uses an LED. 1 and 2, one light source 2 is provided at each end of the light guide member 1, but a plurality of light sources 2 are used depending on the size of the light guide member 1. In addition, the roughness is increased as the rough surface 1c of the light guide member 1 approaches the light source 2, and the surfaces other than the incident surface 1a and the output surface 1b of the light guide member 1 are covered with a highly reflective sheet, so that the reflection efficiency is improved. May be increased.

In this configuration, light from the light source 2 enters the light guide member 1 from the incident surface 1a of the light guide member 1, and the incident light is scattered between the exit surface 1b and the rough surface (scattering surface) 1c. It progresses while reflecting. At this time, the light that is totally reflected at the emission surface 1b, then scattered and reflected at the scattering surface 1c, and reflected at an angle smaller than the critical angle of total reflection with respect to the emission surface 1b is emitted from the emission surface 1b.
b. In this way, the light emitted from the light guide member 1 is made uniform throughout. Then, even if the light guide member 1 is lengthened or the width is changed without increasing the number of the light sources 2, unevenness does not occur in the brightness.

FIG. 4 is a perspective view showing a case where the lighting fixture 10 is embedded in a skirting board inside a building. In the figure, reference numeral 11 denotes a baseboard, which is provided with an opening 11a through which the light guide member 1 of the lighting fixture 10 is exposed, and which has a U-shaped cross section.
And a space for the relay connector 4 and the like.
A plurality of the lighting fixtures 10 are connected by the relay connector 4 and the back surface of the case 5 is fixed to a wall surface with a double-sided adhesive tape or the like.

FIG. 5 shows the lighting fixture 10 as the surrounding plate 1 of the stairs 14.
6 shows the case where the lighting fixture 10 is attached to the entrance frame 15 of the entrance, but FIG. 6 shows the case where the number of the light sources 2 is not changed according to the width of the enclosing plate 13 of the stairs 14 and the entrance frame 15. Each of the feet is illuminated by changing the length of 10 feet.

As described above, the light emitting area can be freely set to some extent according to the mounting location with a small number of light sources 2 to extend the light emitting distance, or the shape can be adjusted to the shape of the mounting location to widen the applicable range. , Power consumption can be reduced. In addition, the light emission unevenness is small, and the emission surface 1b of the light guide member 1 is small.
Since the light from the light source 2 is not direct light of the light source 2 but scattered light, it can be illuminated without dazzling.

Embodiment 2 FIG. 7 is a partially cutaway perspective view of a lighting fixture according to Embodiment 2 of the present invention, and FIG. 8 is an example of use of the lighting fixture. 7, FIG. 1 of the first embodiment,
The same or equivalent parts as in FIG. Reference numeral 25 denotes an incident surface 25 on which light from the light source 2 is incident on both end surfaces in the longitudinal direction, and an emission surface 25b between the incident surfaces 25a on both ends.
And an elongated light guide member 26 having a rough surface (not shown) on the back surface opposite to the emission surface 25b and a bent portion 25d.
a having a bent portion 27b and a case 2 having a bent portion 27b.
6 is a cover that covers the opening, and is provided with an opening 27a so that the emission surface 25b of the light guide member 25 is exposed.

In this configuration, as in the first embodiment, light from the light source 2 enters the light guide member 25 from the incident surface 25a of the light guide member 25, and exits from the exit surface 25b.

FIG. 8 is a perspective view showing a case where the lighting fixture 10 is buried in a corner of a wall inside a building. In the figure, reference numeral 12 denotes a wall surface, and a plurality of lighting fixtures 10 are connected by the relay connector 4, the back surface of the case 26 is attached to the wall surface with a double-sided adhesive tape or the like, and the feet are illuminated.

As described above, the light source 2 can be attached to a corner of a wall surface with a small number of light sources 2 and consume less power, emit less light, and illuminate without dazzling.

Embodiment 3 FIG. FIG. 9 is a partially cutaway perspective view of a lighting fixture showing Embodiment 3 of the present invention, and FIG. 10 is an example of use of the lighting fixture. In FIG. 9, the same or equivalent parts as those in FIGS. 1 and 2 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 9, reference numeral 41 denotes an incident surface 41a on which light of the light source 2 is incident on both end surfaces in the longitudinal direction, two exit surfaces 41b, 41b adjacent between the incident surfaces 41a at both ends, and opposing the exit surface 41b. Two rough surfaces 41 on the back side
c, 41c, and 23 are light guide members 4
1, a case for accommodating the light source 2 and the wiring 3; and 24, a cover for covering an opening of the case 23, provided with an opening 24a so as to expose an emission surface 41b of the light guiding member 41; A gap for the wiring 3 is provided below the case 41 and between the case 23.

In this configuration, light from the light source 2 enters the light guide member 41 from the incident surface 41a of the light guide member 41,
The incident light travels while being scattered and reflected between the two emission surfaces 41b, 41b and the rough surfaces (scattering surfaces) 41c, 41c, is totally reflected by the emission surfaces 41b, 41b, and then is diffused.
c, the light reflected at an angle smaller than the critical angle of total reflection with respect to the emission surfaces 41b, 41b is emitted from the emission surfaces 41b, 41b.
The light exits from 41b.

FIG. 10 is a perspective view showing a case where the lighting fixture 10 is buried in a corner of a wall surface inside a building. The lighting device 10 has a rear surface attached to a wall surface 12 with a double-sided adhesive tape or the like, and a foot of a corner portion of the wall surface is illuminated.

As described above, it can be used vertically at a corner of a building, consumes little power, has little unevenness in light emission, and can illuminate without dazzling. In the present embodiment, the case of the two emission surfaces 41a is shown, but the two emission surfaces 41a may be curved emission surfaces when the shape of the corner of the wall surface is a curved surface.

Embodiment 4 FIG. 11 is a perspective view of a main part of a light guide member of a lighting fixture according to Embodiment 4 of the present invention.
Is an example of use of a lighting fixture. In FIG. 11, reference numeral 51 denotes an incident surface 51a at both end surfaces in the longitudinal direction, an exit surface 51b having an arc-shaped cross section between the entrance surfaces 51a, and a cross-section having a rough surface 51c on the back side facing the exit surface 51b. It is a columnar light guide member. Other configurations are the same as those in the first embodiment, and a description thereof will be omitted.

In this configuration, light from the light source 2 enters the light guide member 51 from the incident surface 51a of the light guide member 51,
The light exits from the exit surface 51b.

FIG. 12 shows a lighting device 10 with a handrail 17 of a staircase.
FIG. 3 is a perspective view showing a case where the handrails 17 and stairs are illuminated.

As described above, the emission surface 51b can be formed in a shape corresponding to the shape of the object to be mounted, so that power consumption is small, light emission unevenness is small, and illumination can be performed without dazzling.

Embodiment 5 FIG. 13 is a perspective view of a main part of a lighting fixture according to Embodiment 3 of the present invention. In the figure, the same or equivalent parts as those in FIG. 2 of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Reference numeral 61 denotes an elongated surface having an incident surface 61a on both end surfaces in the longitudinal direction where light of the light source 2 is incident, an output surface 61b between the incident surfaces 61a at both ends, and a rough surface 61c on a back surface opposed to the output surface 61b. Light guide member,
Reference numeral 61d denotes a light source supporting portion that supports the light source 2, and 62 denotes a case in which the light guide member 61 that supports the light source 2 and the wiring 3 are accommodated and an opening 62a is provided.

In this configuration, the case 6
2 and the rough surface 61c of the light guide member 61.
With double-sided tape.

As described above, the lighting fixture 1 is omitted by omitting the case.
0, and the number of parts can be reduced.

[0034]

The lighting device according to the present invention is an elongated light guide member having an entrance surface on both end surfaces in the longitudinal direction, an exit surface between the entrance surfaces, and a rough surface on a back surface opposite to the exit surface. And a light source whose irradiation direction is arranged toward the incident surface of the light guide member, and is used by being buried in the mounting portion. The range of application can be widened by increasing the distance or by adopting a shape that matches the shape of the mounting location, reducing power consumption.
Further, light emission unevenness is small, and glare can be prevented.

Further, since the light guide member has a shape bent between the incident surfaces, it can be used at a corner of a building.

Further, since the light guide member has a prismatic shape and the light exit surface is two surfaces adjacent to the prism, it can be used vertically at a corner of a building.

Further, since the light emitting surface of the light guide member is a curved surface, it can be used for a curved mounting portion.

Further, since the support hole for supporting the light source is provided on the incident surface of the light guide member, the number of parts can be reduced.

Further, since the surfaces other than the entrance surface and the exit surface of the light guide member are covered with the high reflection sheet, the exit efficiency is good and the power consumption can be reduced.

Further, since the light source uses an LED, the light source can be made compact and power consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lighting fixture according to Embodiment 1 of the present invention.

FIG. 2 is an exploded perspective view of the lighting fixture showing the first embodiment of the present invention.

FIG. 3 is a perspective view of a main part of FIG. 2;

FIG. 4 is a perspective view showing an example of use of the lighting fixture according to the first embodiment of the present invention.

FIG. 5 is a perspective view showing a usage example of the lighting fixture according to the first embodiment of the present invention.

FIG. 6 is a perspective view showing a usage example of the lighting fixture according to the first embodiment of the present invention.

FIG. 7 is a partially cutaway perspective view of a lighting fixture according to Embodiment 2 of the present invention.

FIG. 8 is a perspective view showing an example of use of the lighting fixture according to Embodiment 2 of the present invention.

FIG. 9 is a partially cutaway perspective view of a lighting fixture according to Embodiment 3 of the present invention.

FIG. 10 is a perspective view showing a usage example of the lighting fixture according to Embodiment 3 of the present invention.

FIG. 11 is a partially cutaway perspective view of a lighting fixture according to Embodiment 4 of the present invention.

FIG. 12 is a perspective view showing a usage example of the lighting fixture according to Embodiment 4 of the present invention.

FIG. 13 is an exploded perspective view of a main part of a lighting fixture showing Embodiment 51 of the present invention.

FIG. 14 is an exploded perspective view of a conventional lighting fixture.

[Explanation of symbols]

1, 25, 41, 51, 61 Light guide member, 1a, 25
a, 41a, 51a, 61a Incident surface, 1b, 25b,
41b, 51b, 61b Outgoing surface, 1c, 25c, 41
c, 51c, 61c Rough surface, 2, light source, 10 lighting fixture, 61d light source support hole.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // F21Y 101: 02 F21S 1/00 D

Claims (7)

[Claims] 1. An elongated light guide member having an entrance surface at both end surfaces in a longitudinal direction, an exit surface between the entrance surfaces, and a rough surface on a back surface opposite to the exit surface, and the irradiation direction is the light guide. And a light source disposed toward the incident surface of the member, wherein the lighting device is used by being embedded in a mounting portion. 2. The lighting device according to claim 1, wherein the light guide member has a shape bent between the incident surfaces. 3. The light guide member according to claim 1, wherein the light guide member has a prism shape, and the light exit surface is two surfaces adjacent to the prism.
The lighting fixture as described. 4. The luminaire according to claim 1, wherein the light-emitting member has a curved exit surface. 5. The lighting apparatus according to claim 1, wherein a support hole for supporting a light source is provided on an incident surface of the light guide member. 6. The lighting device according to claim 1, wherein a surface other than the incident surface and the exit surface of the light guide member is covered with a high reflection sheet. 7. The lighting apparatus according to claim 1, wherein the light source uses an LED.