JP2588317Y2 - Lighting equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device using an optical fiber.

[0002]

2. Description of the Related Art Conventionally, an illuminating device that controls flickering of an illuminating lamp such as an incandescent lamp or a fluorescent lamp has been generally used. However, an illuminating device using an optical fiber as an optical transmission path for transmitting light from a light source has been used. It has been put into practical use (Japanese Patent Application Laid-Open No. 60-162205).
issue).

[0003]

[Problems to be Solved by the Invention] However, when illuminating a plurality of illuminated locations with an illuminating device using an optical fiber,
The following problems have been pointed out. As described above, in the illumination device that illuminates a plurality of illumination locations, it is indispensable that all the illumination locations can be simultaneously illuminated, and also that only the necessary illumination locations can be illuminated. In the case of illuminating only the necessary illumination spots as described above, in the illumination device proposed in the above publication, it is necessary to provide light sources and optical fibers for a plurality of illumination spots and control blinking of each light source. is there.

However, high-intensity lamps such as mercury lamps and halogen lamps are often used as light sources, and since such lamps require a long time to turn on and off, it is difficult to control the blinking of each light source. .

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an illuminating device that uses an optical fiber and that can easily control blinking of a plurality of illuminating points.

[0006]

In order to achieve the above object, a first illumination device of the present invention uses an optical fiber as an optical transmission line for transmitting light from a light source, and illuminates a plurality of illumination locations. An apparatus comprising: a single light source; and a plurality of optical fiber bundles for receiving light emitted from the light source, and light emitting ends of the plurality of optical fiber bundles are arranged for each of the plurality of illumination locations. and, between the entrance end of the light source and the plurality of the optical fiber bundle, and shielding means for shielding light incident on the plurality of the optical fiber bundle from the light source for each optical fiber bundle, the plurality of Fingers that illuminate the lighting location at once
Indication and instructions to illuminate each lighting location individually.
Lighting instruction means, based on the instruction of the lighting instruction means,
Controlling the shielding means so that light enters the plurality of optical fiber bundles;
The gist is control means for executing shooting . In addition,
The second illuminating device transmits light from a light source through an optical fiber.
Used as an optical transmission path for transmission, illuminating multiple lighting locations
A lighting device, comprising: a single light source; and light emitted from the light source.
A plurality of optical fiber bundles for incidence;
The emission end of the light of the bundle is arranged for each of the plurality of illumination locations.
And the light source and the input end of each of the plurality of optical fiber bundles.
Between the light source and the plurality of optical fiber bundles.
Shielding means for shielding light incident on the optical fiber bundle for each optical fiber bundle
Wherein the plurality of optical fiber bundles are at the incident end.
The point is that the light incident area is different.
You. The first and second lighting devices of the present invention are as follows.
It is possible to take the like, the first aspect, the the present invention
In one illuminating device, the shielding hand stage, provided for each entrance end of said plurality of optical fiber bundles, switches the transmission and shielding of light by varying depending on the voltage applied to arrangement of the liquid crystal encapsulated and those having a liquid crystal shutter data, before
Control means based on an instruction from the lighting instruction means.
It can be also have a means to individually applied voltage to the liquid crystal shutter for each pre Symbol optical fiber bundle. Second
The aspect is the second lighting device of the present invention, wherein the shielding hand is provided.
A step is provided for each input end of the plurality of optical fiber bundles.
And the alignment state of the enclosed liquid crystal according to the applied voltage.
LCD shutter that switches between blocking and transmitting light by changing
And applying a voltage to the liquid crystal shutter for each of the optical fiber bundles.
And means for applying the voltage separately.
In a third aspect, the first and second lighting devices of the present invention are provided.
In the first and second aspects, the optical fiber is
From methacrylic resin that absorbs light in the infrared region during transmission
It can be formed. In addition, the fourth
The aspect is the first and second lighting devices of the present invention and the first and second lighting devices described above.
In a second aspect, between the light source and the optical fiber,
With a filter that blocks transmission of light in the infrared region
It can be.

[0007]

[Action] first lighting apparatus of the present invention that have a above-described configuration,
Light emitted from a single light source is incident on a plurality of optical fiber bundles, and light is emitted from an emission end of the optical fiber bundle arranged for each of the plurality of illumination locations to illuminate each illumination location. In illuminating each illumination location in this way, the shielding of light between the light source and the incident end of each of the plurality of optical fiber bundles is controlled by a control means.
Through the control of蔽手stage shielding by stage, it performed for each optical fiber bundle. In addition, the control means controls the light shielding means.
Is the instruction of the lighting instruction means, that is,
Instruction to illuminate or finger to illuminate each illumination location individually
It is performed based on the indication. A result of this, a plurality of lighting points
In the case of batch lighting, light is blocked.
All lighting spots are illuminated at once, and each lighting spot is
When individually illuminated , the illumination is not performed at the illumination location corresponding to the optical fiber bundle where the light is shielded, and the illumination is performed at the illumination location corresponding to the optical fiber bundle where the light is not shielded , The designated lighting location is illuminated.
At this time, it is not necessary to control the blinking of the light source. Also, the present invention
Of the plurality of optical fiber bundles at the entrance end
Since the light incident area is made different,
In illuminating each illuminated location in the same way as the 1 illuminator,
Transmits light with different amounts of light to each lighting location,
The illuminance at the location can be different. In this case , the first and second
In second aspect, in the first, second lighting device above SL,
A liquid crystal shutter is provided for each input end of the plurality of optical fiber bundles, and a voltage is individually applied to each liquid crystal shutter. Therefore, at the entrance end of the optical fiber bundle provided with the liquid crystal shutter to which the voltage was applied, the light from the light source was shielded by the liquid crystal shutter and did not enter, and the liquid crystal shutter to which no voltage was applied was provided. At the entrance end of the optical fiber bundle, light from the light source passes through the liquid crystal shutter and enters. Alternatively, at the input end of the optical fiber bundle provided with the liquid crystal shutter to which the voltage is applied, the light is transmitted through the liquid crystal shutter, and the light enters, and the incidence of the optical fiber bundle provided with the liquid crystal shutter to which the voltage is not applied is applied. At the end, the light is blocked by the liquid crystal shutter and does not enter. In the third mode,
Is an optical fiber that absorbs light in the infrared region during transmission.
By forming a capacitor acrylic resin, in the fourth aspect
Uses a filter that blocks transmission of light in the infrared region as a light source.
By installing between the optical fiber,
Does not emit light in the infrared region.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the above-described lighting device of the present invention is applied to a lighting device in a bathroom will be described.

FIG. 1 is a perspective view showing an essential part of a lighting device 1 for a bathroom, which is an embodiment of the present invention, together with the interior of the bathroom. In the drawings, the optical fiber, which is a main part of the present invention, is illustrated as being transmitted through a wall surface or the like. As shown in the figure, a bathroom is provided with a bathtub 3, a washing place 5, and a mirror 7 for watching the appearance in the washing place.

On the ceiling of the bathroom, there is provided an overall bathroom illumination 10 for illuminating the entire interior of the bathroom in a planar manner, and a tub spot illumination 30 for illuminating the interior of the tub 3 from above.
A washing spot lighting 50 for irradiating the washing spot 5 from above is provided.

On the other hand, the mirror 7 is provided with in-mirror line lights 70A, 70B for irradiating a person who performs face washing, shaving, showering, etc. in front of the mirror 7 in a linear manner through slits in a pair of right and left curved mirrors. Are provided in two upper and lower stages. In addition,
The installation position of the upper-line mirror line illumination 70A is a position where the periphery of the face of a person who stands and takes a shower can be illuminated, and the installation position of the lower-mirror line illumination 70B is for a person who sits in a washing room and cleans his face. This is the position where the area around the face can be irradiated.

The overall bathroom lighting 10 is configured by loosening each optical fiber from a converging body 11 composed of a plurality of optical fibers, and laying the loosened optical fibers in parallel and in a plane along the ceiling. . The planar light-emitting end (light-emitting surface) laid on the ceiling is directed toward the bathroom floor, which is an illumination location. The configuration of the optical fiber portion and the state of illumination in such planar illumination will be described later.

The bathtub spot lighting 30 and the washing spot lighting 50 are convergent members 31 and 5 each composed of a plurality of optical fibers.
The end surfaces (light emitting ends) are aligned while the unit 1 is bound, and each end surface is illuminated with a bathtub 3 and a washing place 5.
It is configured to face. The configuration of the optical fiber portion in the bathtub spot lighting 30 and the washing spot lighting 50 and the state of lighting will be described later.

The upper and lower mirror line lights 70A and 70B are:
Converging bodies 71a, 7 each composed of a plurality of optical fibers
1b is divided into two parts on the way, and the optical fibers of the divided bundle are loosened, and the emission ends (the emission end rows 71aa, 71ab and the emission end rows 71ba, 71bb:
13) is inserted into a pair of left and right arc-shaped slits 7a and 7b formed on the back surface of the mirror 7 to sit around the face of a standing shower person or a washing place, which is the lighting location. It is configured to face around the face of the person to be washed. The positions where the slits 7a and 7b are formed are designed so that the upper and lower mirror line lights 70A and 70B can illuminate the above-described positions. The configuration of the optical fiber portion in the mirror line illumination 70A, 70B and the state of illumination will be described later.

Each of the converging bodies 11 and 3 of the optical fiber described above.
1, 51, 71a and 71b are respectively turned from the bathroom ceiling and the front of the mirror 7 to the outside of the bathroom, and are thereafter combined into one bundle, and the combined bundle of optical fibers is a light source for emitting light. It is connected to the device 81. In addition,
Connection between each of the converging bodies 11, 31, 51, 71a, 71b and the light source device 81 will be described later.

Each of the converging bodies 11, 31, 51, 71a,
The optical fiber constituting 71b is formed using methacrylic resin as a material.

In addition to these lights, an operation panel 100 for instructing all lights to be turned on / off is provided on the side wall of the bathroom near the washing room, and a bathtub spotlight 30 is provided on the side wall of the bathroom near the bathtub. A bathtub-side operation panel 110 for instructing turning on / off of some of the first lighting is embedded.

As shown in FIG. 2, the operation panel 100 includes an all-light switch 101 for turning on and off all the lights at once, an entire bathroom light 10, and a washing spot light 5.
0, ceiling light switch 102, washroom light switch 103, lower mirror light switch 104, upper mirror light switch 105, and bathtub for individually turning on and off the line lights 70A and 70B in the upper and lower mirrors and the spot light 30 in the bathtub, respectively. An illumination switch 106 is provided.

As shown in FIG. 3, the bathtub-side operation panel 110 has a ceiling lighting switch 111 for turning on / off the entire bathroom lighting 10, and a bathtub lighting for turning on / off the bathtub spotlighting 30. A switch 112 is provided. Each of the switches on each of these operation panels is connected to a blinking control device 120, which will be described later, and outputs an on / off signal of the corresponding lighting.

As shown in FIG. 4, a light source device 81 includes a halogen lamp 84 that emits light when supplied with power from a ballast 83, and a parabolic reflecting mirror 85 that regulates the direction of emission of light from the halogen lamp 84. And the halogen lamp 84
And a base 87 for fixing the end of the bundle of optical fibers (the end on the incident end side) in the traveling direction of the light passing through the lens 86. The light radiated from the halogen lamp 84 is converged through a lens 86, and then proceeds toward an optical fiber fixed to a base 87.

In this base 87, as shown in FIG.
In addition to the fixed converging bodies 11, 31, 51, 71a, and 71b, a shutter mechanism for individually blocking the incident end of each converging body and permitting / prohibiting light incidence on the optical fiber in each converging body. 90 (described later) is provided in contact with the end face of the incident end of each converging body. In FIG. 5 which is an exploded perspective view, the shutter mechanism 90 is drawn apart from the end face of the incident end of each converging body.

As shown in FIG. 5, each converging member 11, 3
The optical fibers 1, 51, 71a, and 71b are formed by bundling the incident ends of the respective optical fibers for each converging body and fixed in a circular shape with resin. In other words, the incident end of each convergent unit is 5
It is divided into equal parts and bundled in a fan shape to form the entrance end cell. And in this state, it is fixedly arranged in the base 87 by a binding band (not shown).

The shutter mechanism 90 has five equally divided shutter cells 91 to 95. The shutter cell 91 is in close contact with the entrance end cell of the converging body 51, and the shutter cell 92 is in close contact with the entrance end cell of the converging body 71a. The shutter cell 93 is closely attached to the incident end cell of the converging body 71b, the shutter cell 94 is closely adhered to the incident end cell of the converging body 31, and the shutter cell 95 is closely assembled to the incident end cell of the converging body 11. . In addition, the boundary that separates the shutter cells is formed of a material that does not transmit light, and is in close contact with the boundary of the resin that distinguishes the incident end cell of each converging body.

The shutter cells 91 to 95 are so-called liquid crystal shutters (TN type: twisted nematic) for transmitting and blocking light (open arrow X in the figure) transmitted through the lens 86, and have the following configuration. . Since each shutter cell has the same configuration, only the shutter cell 95 will be described.

As shown in FIG. 6, the shutter cell 95
Cell frame 95a for forming TN crystal molecule enclosed space
And a pair of liquid crystal alignment films 95b,
95c, a pair of transparent electrode plates 95d and 95e to which a voltage is externally applied, and a pair of transparent glasses 95f and 95g. A 90-degree polarizing glass 95h is provided outside the transparent glass 95f. Then, after the TN crystal molecules are sealed in a space surrounded by the cell frame 95a and the pair of liquid crystal alignment films 95b and 95c, the above-mentioned transparent electrodes and the like are closely fixed to complete the shutter cell 95. For the sake of illustration, the thicknesses of the transparent electrode plates 95d and 95e, the transparent glasses 95f and 95g, and the polarizing glass 95h are ignored.

The shutter cell 95 having such a configuration
Changes the arrangement of TN crystal molecules in accordance with the state of application of a predetermined voltage to the pair of transparent electrode plates 95d and 95e, and switches between shielding and transmission of light. Note that the transparent electrode plates 95d, 9
The lead wire attached to 5e is connected to a blinking control device 120 described later.

Next, an electrical configuration centering on the flicker control device 120 will be described with reference to the block diagram of FIG. The blinking control device 120 controls the lighting of each of the above-mentioned lights based on various switch operations on the operation panel 100 and the bathtub side operation panel 110.
And a relay circuit using a relay or the like. Then, the lighting of the bathroom entire lighting 10 and the like is controlled as follows.

Operation panel 100, bath-side operation panel 11
When the switch 0, for example, the all-light switch 101 is pressed, the overall bathroom light 10
In order to turn on all the lights including the spotlight 30 and the bathtub spot light 30, all of the shutter cells 91 to 95 are in a light transmitting state. Specifically, if a certain illumination is in a non-lighting state, the corresponding shutter cell is set to a transmission state, and if all the illuminations are in a non-lighting state, all the shutter cells are set to a transmission state. Further, when the washing place lighting switch 103 is pressed, the shutter cell 91 corresponding to the converging body 51 of this lighting is set to a light transmitting state so that only the washing place spot lighting 50 is turned on based on the operation of the switch, and other light is transmitted. The shutter cell is set in a light shielding state.

When the shutter cell is in a light transmitting state in this manner, the light transmitted through the lens 86 (open arrow X in FIG. 5) reaches the entrance end cells of each converging body, and the entrance end cells And enters the fiber from the respective input ends of the optical fiber, and is transmitted through the optical fiber to the output end.
As a result, the corresponding illumination is turned on, and the illumination location where the emission end is arranged is illuminated. Conversely, if the shutter cell is in a light blocking state, the light transmitted through the lens 86 is blocked by the shutter cell and does not reach the entrance end cell of each converging body, so that the corresponding illumination is turned off. In other words, while each switch is not pressed, an instruction to turn off the light, that is, an instruction to block light by each shutter cell is issued.

The switches on each operation panel are as follows:
When the same switch is continuously pressed, an off signal is output. For this reason, when switches for respective lights, such as the ceiling lighting switch 102, are sequentially pressed, the shutter cells corresponding to the pressed switches are in a light transmitting state, and the corresponding lights are sequentially turned on. That is, a plurality of lights are turned on in an arbitrary combination. Further, after the same switch is continuously pressed, an instruction to turn off the light, that is, an instruction to block light by each shutter cell is issued.

Next, the configuration of the optical fiber portion and the state of illumination in each of the above illuminations will be sequentially described. A. Details of Planar Lighting (Whole Bathroom Lighting 10) FIG. 8 shows an optical fiber converging body 11 for realizing planar lighting.
FIG. 9 is a front view, an end view on the incident end side, and an end view on the emission end side when the irradiation unit is viewed from the ceiling installation surface. FIG. 9 is a cross-sectional view taken along line AA in FIG.

As shown in FIG. 8, an optical fiber converging body 1
Reference numeral 1 denotes a plurality of optical fibers that are bundled in a fan shape (a shape of a circle divided into five equal parts) on the incident end side, and form a plane that is linearly arranged in a line in a predetermined range on the emission end side. Thus, it is fixed with resin. Moreover, each optical fiber forming the converging body 11 has a scratch 12 formed on one surface of a portion forming the plane. 8 and 9.
As shown in the figure, the optical fiber is formed for each optical fiber, extends in the length direction of the optical fiber, and has a core C
Reach one. Further, the end face on the emission side of the converging body 11 has:
The reflective resin is applied, and the light is not emitted from the end face on the emission side.

When the light transmitted through the shutter cell 95 is incident on the incident end cell of the converging body 11 of the optical fiber, this light travels in the core C1 in the direction of the incident end, and reaches the plane portion. In this plane portion, the light traveling in the core C1 is irregularly reflected on the surface of the scratch 12 formed in the plane portion,
It reaches the boundary portion between the core C1 and the clad C2 on the surface side where there is no flaw. At this time, when the angle of incidence of the light on the boundary becomes smaller than the critical angle, the light leaks out of the boundary (outside the surface without damage) as shown by the dashed line in FIG.
As described above, since the reflection surface is coated on the end surface on the emission side, the light reaching the end surface is reflected by the reflection resin without leaking from the flat surface portion,
The light returns to the plane portion side, and light leaks from the plane portion. As a result, the converging body 11 of the optical fiber having the above configuration
In this case, light is irradiated from the entire surface of the portion formed in the planar shape on the side where no flaw is formed.

The overall bathroom lighting 10 is installed on the ceiling of the bathroom with the flat surface of the converging body 11 facing the flawless outside into the bathroom. Therefore, the bathroom is entirely illuminated by the light radiated in a plane toward the bathroom floor via the bathroom overall lighting 10.

B. Details of spot-shaped illumination (bath tub spot illumination 30, washing spot illumination 50) FIG. 10 is a front view of optical fiber converging bodies 31 and 51 for realizing spot-shaped illumination, an end view on an incident end side, and an emission end side. FIG. As shown in the figure, the converging bodies 31 and 51 of the optical fibers bundle a plurality of optical fibers into a fan shape (a shape divided into five equal parts of a circle) on the incident end side and into a cylindrical shape on the exit end side. It is bundled and fixed with resin.

As described above, one of the converging bodies 31 and 51 of the optical fiber thus formed is disposed with its end face on the output end side facing the bathtub 3 and the washing place 5 below the ceiling.

It should be noted that such an optical fiber converging body 31,
The light emitted from 51 normally irradiates one point in the form of a spot. However, in actuality, each of the condensing bodies 31 and 51 is configured so that the bathtub 3 and the washing place 5 can be irradiated in a wider range. The single fiber of the optical fiber is subjected to the following processing at the emission end.

That is, as shown in FIG. 11, the output end of a single line of each optical fiber constituting the converging bodies 31 and 51 is clockwise with respect to the length direction of the optical fiber (x direction in the figure).
It is cut at an angle of 0 degrees. This cut surface is in a relatively rough state that does not lead to optical polishing. The light that has traveled inside the core C1 to the end of the optical fiber is reflected by the cut surface, and the angle of incidence from the core C1 to the boundary between the core C1 and the clad C2 becomes less than the critical angle, and leaks out of the core C1.

When macroscopically viewing light traveling in the core C1 of the optical fiber, this light is assumed to be one light that travels straight in the length direction of the optical fiber as shown by a two-dot chain line in FIG. This light can escape from the core C1 in a direction at an angle of 60 degrees to the length. This indicates that the light emitted from the optical fiber cut at an angle of 30 degrees is the strongest in the direction at an angle of 60 degrees with respect to the length direction. Therefore, the optical fiber cut at an angle of 30 degrees is irradiated with light over a direction that is centered on a direction that is at an angle of 60 degrees with respect to the length direction and that extends from that direction.

FIG. 12 is a graph showing the results of experimentally measuring the brightness of light emitted from the cut surface at an angle of 30 degrees. In the graph shown in the figure, the length direction of the optical fiber is set to an angle of 0 degree, the clockwise direction is set to a positive angle direction (the cut surface is at an angle of 30 degrees), and the direction showing the strongest brightness is 100%. It is drawn as brightness. As can be seen from the figure, the brightness of the emitted light is the strongest of 100 [%] in the direction of 60 degrees, and the brightness is 50 [%] or more from approximately 15 degrees to 90 degrees. That is,
The converging bodies 31 and 51 of the optical fiber having the cut surface at an angle of 30 degrees have a length of 15 with respect to the longitudinal direction of the optical fiber.
Irradiating light in a direction extending from 90 degrees to 90 degrees is experimentally proved.

Therefore, the converging body 3 of such an optical fiber
The light emitted from the light sources 1 and 51 usually has a wide range from one spot, and irradiates the bathtub 3 and the washing place 5 in a wide range.

The cut surface of the end face of the optical fiber on the emission side is at an angle of 60 degrees with respect to the length direction of the optical fiber, but is not limited to this, and is reflected by the cut surface. Any angle may be used as long as the light is incident from the core C1 to the cladding C2 at an incident angle equal to or less than the critical angle.

C. Line-shaped lighting (mirror line lighting 70)
A, 70B) Details FIG. 13 is a front view, an end view on the incident end side, and an end view on the emission end side of optical fiber converging bodies 71a, 71b for realizing linear illumination. As shown in the figure, the converging bodies 71a and 71b of optical fibers bundle a plurality of optical fibers into a fan shape (a five-part shape of a circle) on the input end side and reach the output end. The bundle is divided into two, and the optical fibers of the further divided bundle are fixed with resin so that each single line is arranged in two rows in a straight line on the emission end side. Thus, a pair of emission end rows 71aa, 71ab or emission end rows 71ba, 71 are provided on the emission end side of the converging bodies 71a, 71b of the optical fibers.
bb is formed.

The output end rows 71aa and 71ab or the output end rows 71ba and 71bb are connected to the mirror 7 as described above.
Are inserted into the slits 7a and 7b. FIG. 14 is a longitudinal sectional view along the slit 7a of the mirror 7 in which the emission end rows 71aa and 71ba are fitted into the slit 7a, and FIG. 15 is a transverse sectional view of the mirror 7. As shown in these figures, each of the emission end rows 71aa, 71ab or the emission end rows 71ba, 71bb of the respective converging bodies 71a, 71b extends from the surface of the mirror 7 beyond the coating film 7c coated on the back surface of the mirror 7. In a state where it is inserted to a position where it does not protrude, it is fixed with an adhesive or a not-shown stopper. Also, as shown in FIG.
Each of the optical fibers of each of the converging bodies 71a and 71b is inclined by a predetermined angle θ toward the center with respect to the thickness direction of the mirror 7 so that the slit 7
a and 7b, respectively, and as described above,
The upper mirror line illumination 70A illuminates the area around the face of the person standing and taking a shower, which is a lighting location, and the lower mirror line illumination 70B, illuminates the face while sitting in the washing area. The area around the face is illuminated.

The output end rows 71aa, 71ab
Alternatively, in the emission end rows 71ba and 71bb, each single line of the optical fiber is actually arranged in two rows in a straight line as described above, but in FIG. 1, for convenience of illustration, it is arranged in one row in a straight line. The state is shown. By the way, since the single line of the optical fiber has a thickness of several hundred μm, the slits 7a and 7b are clearly shown in the figure, but actually, a bather standing or sitting in front of the mirror 7 is shown. It is not noticeable to the bather, and the bather only has the impression that light leaks from inside the mirror.

By the way, as described in the details of the spot-shaped illumination, the optical fiber whose exit end is cut at an angle of 30 degrees is converted into the mirror-line illumination 70A, 70B of the linear illumination.
May be configured to be used for the converging bodies 71a and 71b. That is, as shown in FIG. 16, an optical fiber having an emission end cut at an angle of 30 degrees may be fitted perpendicularly to the thickness direction of the mirror 7. In this case, each converging body 71
The cut surfaces S of the optical fibers in the output end rows 71aa and 71ab or the output end rows 71ba and 71bb of the light emitting end portions a and 71b are arranged so as to face outward.

The direction in which light is emitted from each optical fiber is wide, centered on the direction of 60 degrees opposite to the cut surface S with respect to the axial direction.
Even if a, 71ab or the emission end rows 71ba, 71bb are fitted vertically in the thickness direction of the mirror 7, the light is emitted in the direction toward the bather standing or sitting in front of the mirror 7. According to such a configuration, the width of the slits 7a, 7b is
5, the slits 7a and 7b are more invisible to a bather.

Further, with this configuration, the line-shaped irradiation range can be made a wider range, so that a bather standing or sitting in front of the mirror 7 can be irradiated in a wider range. Becomes possible.

Next, the characteristics of each optical fiber constituting each converging body as an optical transmission line described above will be described.
As described above, each optical fiber is formed of methacrylic resin, and methacrylic resin absorbs a considerable amount of light in the infrared and ultraviolet regions. In particular, regarding ultraviolet rays, 250 [nm] and 360 [n]
m] is well absorbed. Further, regarding infrared light, the temperature of the atmosphere of the light emitted from the light source device 81 is approximately 60 degrees, whereas the temperature of the atmosphere on the emission end side of the optical fiber is approximately 37 degrees Celsius. It is experimentally proved that light in the infrared wavelength region is absorbed.

In the illumination device 1 of the present embodiment configured as described above, the light emitted from the halogen lamp 84, which is the only light source, is transmitted through the shutter mechanism 90 to each of the converging bodies 11, 3.
1, 51, 71a, and 71b. Then, light is emitted from the emission end of each of the converging bodies arranged for each of a plurality of illumination locations, such as a bathroom floor, a bathtub 3, and a washing place 5, to illuminate each illumination location.

In illuminating each of the illuminated spots, the shutter cells 91 to 95 of the shutter mechanism 90 are switched between the light shielding state and the light transmitting state based on the operation of the switches on the operation panel 100 and the bathtub-side operation panel 110. Switch to crab. Therefore, by switching the light blocking state or the light transmitting state in each of the shutter cells 91 to 95 of the shutter mechanism 90, each of the converging bodies 11, 31, 51, and 7 is switched.
1a and 71b are controlled so as to illuminate light at a lighting location designated by a switch of each panel.
Lighting is not performed at lighting locations where lighting is not instructed.

As a result, according to the lighting device 1 of the present embodiment, the blinking control of the halogen lamp 84 is not performed,
A plurality of lighting locations, such as a bathroom floor, a bathtub 3, and a washing place 5, can be turned on or off in any combination. That is, it is possible to extremely easily control the flickering of a plurality of lighting locations such as the bathroom floor, the bathtub 3 and the washing place 5. In addition, with a simple operation of pressing a combination of switches, a plurality of illumination locations can be turned on or off in any combination.

Further, the lighting device 1 of the present embodiment has the following effects. The lighting device 1 includes a bathroom lighting 10
Irradiates the entire bathroom, and the tub spotlight 30 and the washing spotlight 50 provide a bathtub 3 and a washing place 5.
Are illuminated in the form of spots, and line lights 70A and 70B
Irradiates a person standing or sitting in front of the mirror 7 in a line shape. Each illumination for performing such irradiation does not require replacement of electric lamps in the bathroom, which is conventionally required, unless all optical fibers are cut off. However, when all optical fibers are cut,
Since it does not occur unless there is a natural disaster such as an earthquake, according to the lighting device 1 of the present embodiment, maintenance free in the bathroom can be achieved.

Further, in the case of the bathroom overall lighting 10, it is only necessary to lay an optical fiber along the ceiling, and in the case of the bathtub spot lighting 30 and the washing place spot lighting 50, only the emission end faces the bathroom. Well, mirror line lighting 70
A, 70B, the optical fibers arranged in two rows
The lighting device 1 of the present embodiment can reduce the installation space of the lighting in the bathroom since it is only necessary to bury the lighting device in the slit on the back surface.

Further, since the optical fiber constituting the converging body of each illumination is made of methacrylic resin, a considerable amount of light in the infrared region and the ultraviolet region is absorbed during light transmission. As a result, it does not irritate the skin of a bathing person who has been taking a bath and the skin temperature has been activated higher than daily life.
It can emit skin-friendly light. In addition, since the light in the infrared region is absorbed, it is possible to avoid raising the skin temperature of a bather who takes this light by means other than hot water.

Moreover, in addition to the overall lighting of the bathroom by the bathroom overall lighting 10, the spot illumination of the bathtub 3 and the washing place 5 by the bathtub spotlight 30, the washing place spotlight 50, and the front of the mirror 7 by the in-mirror line lights 70A and 70B. Line irradiation. As a result, according to the lighting device 1 of the present embodiment, the bather can sufficiently bathe in the skin-friendly light.

Next, another embodiment of the present invention (second embodiment)
Will be described. In the description, the same reference numerals are used for the same components as those in the above-described embodiment (first embodiment).

A lighting device 1 according to a second embodiment of the present invention.
Compared to the first embodiment, the light source device 81 is different from the light source device 81 in that an optical fiber generated from quartz glass instead of methacrylic resin is used as an optical fiber of each converging body in each lighting such as the bathroom entire lighting 10. As shown in FIG. 17, a heat cut filter 88 for cutting a wavelength in an infrared region is provided between a halogen lamp 84 and a lens 86, and the other configuration is the same.

Even in the lighting device 1 of the second embodiment,
Similarly to the above-described embodiment, a plurality of lighting locations such as a bathroom floor, a bathtub 3, and a washing place 5 can be turned on in any combination without performing the blinking control of the halogen lamp 84,
Of course, it can be turned off.

In the lighting device 1 of the second embodiment,
Although the light in the infrared region cannot be cut by the optical fiber itself, the light in the infrared region can be cut by the heat cut filter 88 of the light source device 81. Since the light in the infrared region is not emitted from the emission end side, it is possible to emit light that is gentle to the skin of the bather who takes this light, and to reduce the skin temperature of the bather,
It is possible to avoid raising the temperature by means other than hot water.

In the second embodiment, the heat cut filter 88 may be configured to cut light in the ultraviolet region in addition to light in the infrared region. The same effects as those of the first embodiment can be obtained.

Although some embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments at all, and may be implemented in various modes without departing from the gist of the present invention. Of course, it can be implemented.

For example, in the above embodiment, each converging body 11,
When the optical fibers are bundled for each of 31, 51, 71a, and 71b to form the incident end cell and each shutter cell, as shown in FIG.
Although the fan shape is divided into equally divided sectors, each incident end cell and each shutter cell may be divided into unequally divided sectors. With this configuration, the amount of light emitted to each illumination location can be changed for each illumination location, so that the added value can be improved through diversification of illumination. Moreover,
It is not limited to the fan type, for example, as shown in FIG.
What is necessary is just to form each incident end cell, and form each shutter cell according to this shape. This makes it possible to simplify the manufacturing process through simplification of the transparent electrode plate and the like of each shutter cell. Even if each incident end cell has a shape as shown in FIG. 18, the area of each incident end cell can be equally divided or unequally divided.

Further, in forming each shutter cell into a sector shape divided into five equal parts, as shown in FIG.
a, a pair of liquid crystal alignment films 95b and 95c, a pair of transparent glasses 95f and 95g, and a polarizing glass 95h are also fan-shaped. However, a thin cylindrical cell frame without division, and a pair of disk-shaped liquid crystal alignments Using a film, a pair of disc-shaped transparent glasses, and a disc-shaped polarizing glass, a fan-shaped transparent electrode plate (divided into five equal parts) between the transparent glass on both sides of the cell frame and the liquid crystal alignment film ( 5 pairs) may be arranged at equal intervals. In other words, each shutter cell may be formed as a fan-shaped transparent electrode plate divided into five equal parts. In this case, since only the transparent electrode plates need to have a fan-shaped shape, the manufacturing process can be simplified through the simplification of the configuration of the shutter mechanism, which is an aggregate of shutter cells.

In addition, each of the converging bodies 11, 31, 51, 71
In configuring a cell shutter mechanism for switching between blocking and transmission of light to the entrance end cell for each of the a and 71b, the invention is not limited to the liquid crystal shutter cell as described above. For example, as shown in FIG. 19, five shielding members 191 to 195 made of an opaque member are combined with each of the converging bodies 11, 31, 51,
Each of the shielding members is slidably provided between a shielding position (shielding member 192) overlapping the incident end cell of each of the incident end cells 71a and 71b and a transmitting position (shielding members 191 and 193 to 195) not interfering with each incident end cell. A shutter mechanism may be constituted by a slide actuator (not shown). Further, the shutter mechanism can be configured by a car cell that controls the amount of transmitted light in accordance with the applied voltage.

Furthermore, although the scratch 12 formed on each optical fiber in the bathroom lighting 10 is formed along the length of the optical fiber, irregular scratches may be formed by sandpaper or the like. At this time, if there is a difference in the degree of flaw formation, the amount of light emitted from the side without flaws differs depending on the degree of flaw formation, so that the bathroom can be illuminated with different illuminance.

In each of the above-described embodiments, an example in which the present invention is applied to a lighting device in a bathroom has been described. However, any lighting system capable of illuminating a plurality of lighting locations simultaneously or any of the lighting locations can be used. , Can be applied to anything. For example, as shown in FIG. 20, slits formed on the back surface of the mirror 209 are provided with linear illuminations 209a and 209b such as in-mirror line illuminations 70A and 70B.
A vanity unit having a spot-like light 225 such as a bathtub spot light 30 at the upper left end of the mirror 9 and laying planar lights 231 and 233 such as the bathroom whole light 10 on the left and right sides of a mirror 209. 200 is also applicable. Further, as shown in FIG. 21, a slit formed in the front wall surface of the main cooking table 320 is provided with a line-shaped illumination 323 such as an intra-mirror line illumination 70A, 70B.
Planar lighting 335, like bathroom lighting 10, on the front wall
Can be applied to the sink unit 300 provided with spot-shaped lights 315 and 345 such as bathtub spot lights 30 on the lower surface of the storage shelf 303 of the range table 310 and the upper end of the outlet of the faucet 341.

[0068]

As described above, according to the invention], the first Ru engagement to the present invention
1, the second lighting device, incident light emitted from a single light source into a plurality of optical fiber bundles, and emits light from the exit end of the optical fiber bundle disposed in each of a plurality of lighting points, Illuminate each lighting spot. Thus the light irradiation of each illumination spot
At this time , light is blocked for each optical fiber bundle between the light source and the incident end of each of the plurality of optical fiber bundles so as to prevent light from being incident on the optical fiber bundle . So
Then, in the first lighting device according to the present invention, such light
When shielding multiple lighting locations at once
Is not performed for each optical fiber bundle.
If lighting is to be performed separately, the lighting
For each fiber optic bundle at
This is not performed for each optical fiber bundle at the illuminated spot.
As a result, according to the first lighting device of the present invention, only
Without having to control the blinking of multiple light sources,
Lighting of bright spots at once or lighting of each lighting spot individually
can do. In addition, each lighting location is individually illuminated.
In this case, a plurality of lighting locations can be turned on and off in an arbitrary combination without performing the blinking control of the light source, and the blinking control of each of the plurality of lighting locations becomes easy . According to the second lighting device of the present invention,
Multiple lighting locations can be assigned without controlling the blinking of the light source.
It can be turned on or off in any combination
And facilitates the flashing control of multiple lighting locations.
In addition, the incident area of light at the entrance ends of
So that each lighting location can be
Easily illuminate, diversify lighting and increase its added value
Can be In addition , the first and second lighting devices
According to the first, second aspect, since switching the transmission and shielding of light by the liquid crystal shutter through a separate voltage applied to the liquid crystal shutter provided on each incident end of the optical fiber bundle of multiple, voltage to the liquid crystal shutter With simple control of application, it does not control the blinking of the light source and collectively illuminates each illumination location
And individual lighting of each lighting, or young flashing of each illumination箇offices of several
Properly can and this performing illumination of each illumination spot at different illuminance. Furthermore, according to the lighting devices of the third and fourth aspects,
Light from the infrared region is not emitted from each lighting location.
If the spot is to illuminate a bathing person in the bathroom
In this case, the skin of the person bathing may be exposed to thermal stimuli other than hot water.
Without giving it, light that is kind to the skin can be emitted.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a lighting device 1 according to a first embodiment in which the present invention is applied to a lighting device in a bathroom.

FIG. 2 is an explanatory diagram for explaining an operation panel 100 in the lighting device 1 of the first embodiment.

FIG. 3 is an explanatory diagram for explaining a bathtub-side operation panel 110 in the lighting device 1;

FIG. 4 is a schematic configuration diagram showing a configuration of a light source device 81 together with a ballast 83.

FIG. 5 shows each converging body 1 housed and fixed in a base 87.
FIG. 4 is an explanatory diagram for explaining a relationship between 1, 31, 51, 71a, and 71b and a shutter mechanism 90 that shields and transmits light to an incident end of each converging body.

FIG. 6 shows a shutter cell 95 constituting the shutter mechanism 90.
FIG. 2 is an exploded perspective view for explaining the configuration of FIG.

FIG. 7 is a block diagram for explaining an electrical configuration centering on a flicker control device 120 for turning on / off each light of the lighting device 1.

FIG. 8 is a front view, an end view on the incident end side, and an end view on the emission end side when the irradiation unit of the converging body 11 of the optical fiber for realizing planar illumination by the bathroom entire illumination 10 is viewed from the ceiling installation surface. .

FIG. 9 is a sectional view taken along line AA in FIG. 8;

10 is a front view, an end view on an incident end side, and an end view on an emission end side of optical fiber converging bodies 31 and 51 for realizing spot-like illumination by a bathtub spot illumination 30 and a washing spot illumination 50. FIG.

FIG. 11 is an explanatory diagram showing a single-wire output end side of an optical fiber.

FIG. 12 is a graph showing the brightness of light emitted from an optical fiber having a cut surface at an angle of 30 degrees with respect to the length direction.

FIG. 13 shows optical fiber converging bodies 71a and 71b for realizing linear illumination by in-mirror line illuminations 70A and 70B.
, A front view on the incident end side, and an end view on the emission end side.

FIG. 14 shows a converging body 71 of the line lights 70A and 70B in the mirror.
FIGS. 7A and 7B are longitudinal sectional views along the slit of the mirror 7 at the emission ends of 71b.

FIG. 15 shows a converging body 71 of the line lights 70A and 70B in the mirror.
FIGS. 7A and 7B are cross-sectional views of the mirror 7 at the emission ends of 71a and 71b.

FIG. 16 is a modified example of the in-mirror line illuminations 70A and 70B, and is a mirror 7 at the exit end of the optical fiber converging bodies 71a and 71b having a cut surface at an angle of 30 degrees with respect to the axial direction.
FIG.

FIG. 17 is a schematic configuration diagram showing a configuration of a light source device 81 according to a second embodiment of the present invention.

FIG. 18 shows each of the converging bodies 11, 31, 51, 71a, 71b.
FIG. 9 is an explanatory diagram for describing a modification of the shape of the incident end cell.

FIG. 19 shows each of the converging bodies 11, 31, 51, 71a, 71b.
FIG. 9 is an explanatory diagram for describing a modified example of a shutter cell that blocks and transmits light for each incident end cell.

FIG. 20 is a schematic configuration diagram of a vanity unit 200 which is another application point of the illumination device 1 of the present embodiment.

FIG. 21 is a schematic configuration diagram of a sink unit 300 which is another application point of the illumination device 1 of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lighting device 3 ... Bathtub 5 ... Washing place 7 ... Mirror 10 ... Bathroom whole lighting 11 ... Converging body 30 ... Bathtub spot lighting 31 ... Converging body 50 ... Washing place spot lighting 51 ... Converging body 81 ... Light source device 84 ... Halogen lamp 87 ... Base 90 Shutter mechanism 91 Shutter cell 92 Shutter cell 93 Shutter cell 94 Shutter cell 95 Shutter cell 100 Operation panel 101 Full lighting switch 102 Ceiling lighting switch 103 Washing area lighting switch 104 Lower mirror lighting switch 105: Upper mirror illumination switch 106: Bathtub illumination switch 110: Bathtub side operation panel 111: Ceiling illumination switch 112: Bathtub illumination switch 120: Flashing control device 191: Shielding member 192: Shielding member 193: Shielding member 194: Shielding member 195 Shielding member 70A ... Illumination 70B… Mirror line illumination 71a… Converging body 71b… Converging body 95a… Cell frame 95b… Liquid crystal alignment film 95c… Liquid crystal alignment film 95d… Transparent electrode plate 95e… Transparent electrode plate 95f… Transparent glass 95g… Transparent glass 95h… Polarized light Glass C1: Core C2: Clad

Claims (6)

(57) [Scope of request for utility model registration] An illumination device that uses an optical fiber as an optical transmission path for transmitting light from a light source and illuminates a plurality of illumination locations, comprising: a single light source; and a plurality of light sources that emit light emitted from the light source. An optical fiber bundle, and an emission end of light of the plurality of optical fiber bundles is arranged for each of the plurality of illumination locations, and between the light source and an entrance end of each of the plurality of optical fiber bundles, and shielding means for shielding light incident on the plurality of the optical fiber bundle from the light source for each optical fiber bundle, and an instruction for collectively illuminating the plurality of illumination positions, each lighting
Lighting instruction means for issuing an instruction to individually illuminate parts
If, controls said blocking unit based on an instruction of the illumination command means
Controlling the incidence of light on the plurality of optical fiber bundles.
Lighting device characterized in that it comprises a control means. 2. The illumination device according to claim 1, wherein the shielding means is provided for each of the incident ends of the plurality of optical fiber bundles, and changes an alignment state of the enclosed liquid crystal according to an applied voltage. hand a liquid crystal shutter motor to switch the transmission and shielding of light, before Symbol control means for applying individual voltages to the liquid crystal shutter for each pre Symbol optical fiber bundle in accordance with an instruction from the illumination instruction section by A lighting device having a step . 3. An optical fiber for transmitting light from a light source.
Lighting device used as a transmission line to illuminate multiple lighting locations
And A single light source, A plurality of optical fiber bundles for receiving the light emitted from the light source.
e, The light emitting ends of the plurality of optical fiber bundles are respectively
Light source and the plurality of optical fibers.
Between the light source and the plurality of light sources;
Light incident on each optical fiber bundle is blocked for each optical fiber bundle.
Shielding hand to cover With steps and The plurality of optical fiber bundles have a light incident surface at the incident end.
Lighting device characterized by different products
Place. 4. The lighting device according to claim 3, wherein The shielding means, Provided for each input end of the plurality of optical fiber bundles and enclosed
Change the alignment state of the applied liquid crystal according to the applied voltage.
A liquid crystal shutter that switches between blocking and transmitting light with and The voltage is individually applied to the liquid crystal shutter for each of the optical fiber bundles.
A lighting device, comprising: means for applying. 5. The method according to claim 1, wherein:
A lighting device, wherein the optical fiber comprises: From methacrylic resin that absorbs light in the infrared region during transmission
The lighting device that is being formed. 6. The method according to claim 1, wherein
A lighting device, wherein between the light source and the optical fiber, An illumination device equipped with a filter that blocks transmission of light in the infrared region
Lighting device.