JP6141107B2 - Thin luminaire and housing - Google Patents

Description

  The present invention relates to a thin luminaire using an LED as a light source, and in particular, is attached to a bottom plate lower surface (bottom surface) of a bathroom vanity or a hanging cupboard (hereinafter referred to as “storage body”) having a storage space, and below the storage body. The present invention relates to a thin illuminating device suitable for illuminating a lamp and a storage body including the thin illuminating device.

  Conventionally, as a storage body provided with a lighting fixture, a fluorescent lamp is attached to the bottom surface of a mirror cabinet (Patent Document 1), a fluorescent lamp is attached to the bottom surface of a hanging cabinet (Patent Document 2), a mirror There is known one in which an LED is attached to the bottom of a cabinet (Patent Document 3).

JP 2007-296041 A Japanese Patent Laid-Open No. 10-234494 JP 2001-78909 A

  The inventions described in Patent Documents 1 and 2 require a space for housing the fluorescent lamp on the bottom surface of the storage body, and therefore are difficult to mount when the space below the bottom surface is narrow. If a space for accommodating the fluorescent lamp is provided in the storage body, the storage body becomes a dead space correspondingly, and the volume of the storage body is reduced.

  The invention described in Patent Document 3 does not cause the above-mentioned problems of Patent Documents 1 and 2 (see the same document, paragraph number [0011] and FIG. 6). However, since many LEDs are mounted in a planar shape, In order to increase the irradiation area, a large number of LEDs are required, resulting in high costs.

  The problem to be solved by the present invention is that it does not take a large space for installation and can be installed even if the space below the bottom surface of the storage body is narrow, so there is no need to install it inside the storage body, and storage that has conventionally been a dead space An object of the present invention is to provide a thin illuminator that can effectively use the inside of the body and can illuminate the lower part of the bottom surface of the storage body with a small number of LEDs, and a storage body including the thin illuminator.

The thin illuminating device of the present invention is a illuminating device that can be attached to a storage body and can illuminate the lower part of the storage body. The provided light guide plate, the reflector, and the power circuit for the LED are accommodated in a thin main body case, the main body case is horizontally long, the light guide plate is disposed in the main body case, and outside the peripheral end surface of the light guide plate A light source unit is disposed on the light source unit, a power circuit is disposed outside the light source unit, the light guide plate, the light source unit, and the power circuit are arranged in a line in the main body case, and the reflective material is an end face of the light guide plate facing the LED. It is provided on any one or two or more of the peripheral end surface and the back surface. The reflective material can be a reflective sheet (including a film and a thin plate) or a reflective agent. In the case of the reflection sheet, it can be disposed on, attached to, or coated on the back surface or the end surface of the light guide plate. The thickness of the main body case is suitably about 10 to 20 mm.

Thin lighting fixture of the present invention, the power circuit to the power supply unit housed within the power supply case, it is also possible to place the power supply into the main body case as described above. The light source unit, the light guide plate, and the power supply unit are preferably thin enough to be accommodated in the main body case so that they are not protruded from the main body case.

  The thin illuminator of the present invention has an irradiation surface and side surfaces of a main body case opened, and a power supply unit, a light source unit, a light guide plate, a light source unit, and a power supply unit are accommodated in that order from the opening, It can also be arranged in a row. In this case, either one of the two power supply units may be a power supply case without a power supply circuit, and one of the two light source units may be a base without an LED.

  The thin illuminating device of the present invention may be provided with a wiring space in which a power cord, lead wires, and the like can be wired on the back side of the main body case and on the back side of the light guide plate or the reflective material.

  In the thin illuminating device of the present invention, a cord insertion opening for drawing out the power cord can be opened on any of the side surface, the upper surface, and the lower surface of the peripheral wall of the main body case. The cord insertion opening is opened to communicate with the continuous side and upper surface, and the side and lower surface, so that the power cord can be pulled out from any surface that communicates (changes the drawing direction and can be routed) Is desirable.

  The thin illuminating device of the present invention may be one in which a power supply circuit or / and a light source unit are waterproofed or / and moisture-proofed.

  In the container of the present invention, the thin illuminating device is attached to the bottom surface of a container such as a hanging shelf and a three-sided mirror provided with a storage space inside with its irradiation surface facing down.

The thin illuminating device of the present invention has the following effects.
(1) Since the LED of the light source unit is arranged on the side of the light guide plate, the illuminator is thinner than when the LED is arranged on the back side of the light guide, and can be mounted in a limited space. is there.
(2) Since the LED light of the light source unit is incident on the light guide plate and the surface irradiation is less uneven, it is possible to irradiate a wide range with a small number of LEDs.
(3) Brightness is improved because there is a reflective material on the back side of the light guide plate. When the reflecting material is also provided on the end face of the light guide plate, the brightness is further improved.
(4) Since it is thinner than a conventional lighting device using a fluorescent lamp, even if it is attached to the bottom surface of the storage body, the protruding length is small and does not get in the way. Since it is not necessary to attach the inside of the storage body, the internal space of the storage body, which has conventionally been a dead space, can be used effectively.
(5) When a wiring space is provided in the main body case, it is easy to wire and route cords such as a power cord and a lead wire, and the wiring is not messed up and can be neatly wired in the main body case.
(6) Since the wiring space is provided on the back surface of the light guide plate or the reflective material, the codes do not come out on the front surface of the light guide plate or the reflective material, and do not interfere with the irradiation.
(7) When the cord insertion hole is opened to communicate with the side, top, or bottom of the peripheral wall of the main unit case, the power cord can be routed more easily and easily connected to an indoor power outlet. become.
(8) When the light guide plate, the light source unit, and the power supply circuit are arranged in a line in the main body case, the thickness can be further reduced.
(9) If the power supply circuit is accommodated in the power supply case to form a power supply unit and the power supply unit can be arranged in the main body case, the power supply circuit and the power supply circuit can be thinned.
(10) If the irradiation surface and the side surface of the main body case are opened, the power supply unit, the light source unit, the light guide plate, the light source unit, and the power supply unit can be accommodated in this order from the opening to the main body case. It is easy to accommodate and maintain.
(11) Since the two power supply units housed in the main body case can close the side opening of the main body case, the light source unit, the light guide plate, the reflecting material, etc. housed in the main body case do not fall out of the main body case.
(12) If the power supply circuit (power supply unit) or the light source unit is waterproofed and / or moisture-proofed, there is no risk of leakage even if it is used around water in a bathroom or kitchen.

The storage body of the present invention has the following effects.
(1) Since the said thin illuminating device is used, the internal space of the container which was conventionally a dead space can be used effectively.
(2) Since the thin luminaire is used, the effects (1) to (12) are obtained.

(A) is a perspective view which shows the usage example of the thin illuminating device of this invention, (b) is a sectional side view of (a), (c) is the a section enlarged view of (b). The disassembled perspective view which shows an example of the thin illuminating device of this invention. Sectional drawing which shows an example of the thin-type lighting fixture of this invention. Explanatory drawing of the power supply circuit of a thin illuminating device. (A) is explanatory drawing of the movable range of a power cord, (b) is explanatory drawing of a cord holder. (A) is a front view of the thin-type lighting fixture of this invention, (b) is a rear view of (a). (A) is a top view of the thin illuminating device shown to Fig.6 (a), (b) is a bottom view of Fig.6 (a), (c) is the left-right side view of Fig.6 (a). (A) is AA arrow sectional drawing in Fig.6 (a), (b) is arrow BB sectional drawing in FIG.6 (b). CC cross-section perspective view in FIG.

(Embodiment)
An example of an embodiment of a thin luminaire 1 of the present invention will be described with reference to the drawings. The thin illuminating device 1 of the present invention can be used for various applications. Here, a case where the thin illuminating device 1 is used by being attached to the bottom surface of the vanity as shown in FIGS. 1A and 1B will be described as an example. . The bathroom vanity shown in FIGS. 1 (a) and 1 (b) is provided with a mirror cabinet B above the vanity (bathroom) main body A, and is stored on the back side of the three-sided mirror C of the mirror cabinet B. Part D is provided. Normally, the trihedral mirror C has a lower end E protruding downward from the bottom surface of the storage portion D as shown in FIG. 1 (c), and a finger can be locked to the back surface of the lower end E. It can be opened by pulling forward. As shown in FIGS. 1B and 1C, the thin illuminating device 1 of the present invention is attached downward to the bottom surface of the storage portion D so as to illuminate the washstand.

[Outline of thin lighting equipment]
An example of the thin luminaire 1 of the present invention is shown in FIG. This figure is an exploded perspective view. A thin illuminator 1 shown in FIG. 2 includes a light source unit 4 in which one or two or more LEDs 2 are arranged in a vertical row on a base (LED case) 3, a light guide plate 5 disposed in the emission direction of the LEDs 2, and a light guide plate 5 includes a reflector 6 disposed on the back surface side of the power source 5, a power supply unit 8 equipped with a power supply circuit 10 for supplying power to the LED 2 in a power supply case 7, and a main body case 9. The light source unit 4, the light guide plate 5, the reflector 6, and the power supply unit 8 are accommodated in the main body case 9 as shown in FIG. 3. In FIG. 3, the light guide plate 5 is disposed at the center in the longitudinal direction of the main body case 9, the light source unit 4 is disposed on both outer sides thereof, and the power supply unit 8 is disposed (set) in a row and on the same surface.

[Light source unit]
The light source unit 4 is a unit in which an LED module in which a plurality of LEDs 2 are mounted on an elongated mounting board is accommodated and fixed vertically in a U-shaped LED case 3 in plan view.

  Many LEDs 2 that are not modularized can be arranged and used. The LED 2 can be an existing one or a new one. In the illustrated embodiment, an aluminum C channel is used for the LED case 3. The LED case 3 can be made of other materials and shapes.

  The light source unit 4 can be waterproofed (including moisture proof, the same applies hereinafter). In this case, in addition to applying a waterproofing agent (moisture-proofing agent) to the surface of the mounting substrate and the LED 2, waterproofing treatment is performed by filling a potting material (filling material) in the LED case 3 in which the mounting substrate and the LED 2 are accommodated. You can also. Various potting materials can be used. For example, “KE-109E-A / B” manufactured by Shin-Etsu Chemical Co., Ltd. can be used. Since this potting material is colorless and transparent, even if it fills the surface side of the LED module 4, LED light is hardly attenuated.

  As shown in FIG. 3, the light source unit 4 is disposed on both outer sides of the light guide plate 5. In this case, the LED 2 is disposed so that the emission direction of the LED 2 faces the side surface (short side surface) 5 a (FIG. 2) of the light guide plate 5.

[Light guide plate]
The light guide plate 5 is a horizontally long plate that fits in the main body case 9. Both ends of the light guide plate 5 in the longitudinal direction are sandwiched between two opposing sandwiching pieces 3a and 3b (FIGS. 3 and 9) of the LED case 3 of the light source unit 4, and face the LED 2 (FIG. 3). The light emitted from the light (hereinafter referred to as “LED light”) enters the light guide plate 5 from both side surfaces 5 a of the light guide plate 5. The light guide plate 5 diffuses (reflects) the incident LED light, and an existing one or a newly developed one can be used. The light guide plate 5 shown in FIG. 2 has unevenness on the entire back surface.

  On the upper surface 5b and the lower surface 5c (both long side surfaces: FIG. 2) of the light guide 5, a reflective sheet (tape-shaped one) 11 (FIG. 2) for reflecting LED light is attached. . For the reflection sheet 11, for example, Luminer (registered trademark; the same applies hereinafter) manufactured by Toray Industries, Inc. can be used. A reflective agent may be applied (coated) on the upper and lower end surfaces of the light guide plate 5 instead of the reflective sheet 11. The reflective sheet 11 and the reflective agent may not be provided when unnecessary.

  The light guide plate 5 is accommodated in the main body case 9 as shown in FIGS. 3 and 6 so that the front surface (smooth surface) is exposed to the front opening 12 (FIG. 2) of the main body case 9. The LED light diffused in the light plate 5 is irradiated from the front of the light guide plate 5.

[Reflective material]
The reflecting material 6 is accommodated in the accommodating space 13 of the main body case 9 so as to overlap the back surface of the light guide plate 5. The reflecting material 6 shown in FIG. 2 is obtained by sticking a Toray Co., Ltd. Luminer (reflective sheet) to a horizontal rectangular thin plate made of aluminum, but the reflecting material 6 may be a thin plate coated with a reflective agent.

[Body case]
The main body case 9 shown in FIG. 2 is horizontally long, and includes a back plate 14, an upper plate 15 on its upper edge, a lower plate 16 on the lower edge, a front opening 12 between both plates, and side surfaces on both sides in the longitudinal direction. The storage space 13 is provided inside the back plate 14, the upper plate 15, and the lower plate 16. The upper plate 15 includes a U-shaped groove facing downward in a side view, and the lower plate 16 includes a U-shaped groove facing upward in a side view.

  In the housing space 13, one light guide plate 5 shown in FIG. 2 and one reflecting material 6 stacked on the back surface thereof are housed, and the light source unit 4 is housed on both outer sides of the light guide plate 5. A space that can accommodate the power supply unit 8 is provided on both outer sides of the unit 4. The upper edges of the light guide plate 5 and the reflector 6 that are stacked, the upper edges of the two light source units 4 and the power supply unit 8 are in the downward groove of the upper plate 15, and the lower edges of the upper plate 15 are upward of the lower plate 16. The upper edge portion is held by the upper plate 15 and the lower edge portion is held by the lower plate 16 by this insertion, and is arranged in the accommodating space 13. Each of the upper edge portion and the lower edge portion can be put into and out of the groove of the upper plate 15 and the groove of the lower plate 16 from the side opening 17 of the main body case 9. In the illustrated embodiment, the main body case 9 is made of aluminum, but may be made of other materials, for example, resin.

  In this embodiment, as shown in FIG. 3, when the light guide plate 5, the reflector 6, the light source unit 4, and the power supply unit 8 are accommodated in the accommodation space 13 of the main body case 9, the reflector 6, the light source unit 4, A wiring space S (FIGS. 3 and 9) is formed between the back side of the power supply unit 8 and the back plate 14 of the main body case 9. The wiring space S has a space (space) in which the wiring cord (lead wire) 18 and the power cord 19 (both in FIG. 4) can be wired.

  When the thickness X (FIG. 3) of the main body case 9 is about 10 to 15 mm and attached to the bottom surface of the storage part D of the mirror cabinet B as shown in FIGS. 1 (a) to 1 (c), the case 9 is stored as shown in FIG. It is desirable to hide behind the lower end E of the three-way mirror C projecting downward from the bottom of the part D.

[Power supply unit]
The power supply unit 8 includes a power supply circuit 10 (FIG. 3) for converting an AC100V power supply into a DC voltage (usually 10 to 14V) necessary for driving the LED2 and supplying the voltage to the LED2. The power supply circuit 10 is accommodated in the accommodating space in the power supply case 7. As an example, a power supply unit 8 shown in FIG. 4 has a power supply circuit 10 in which a power supply component 20 such as a choke coil, a resistor, an LED illumination driving IC, and a capacitor is mounted on the surface of a printed circuit board P. . A small electrolytic capacitor is used for the LED illumination driving IC. As a result, the product can be reduced in size and can be adapted to PSE (Electrical Appliance and Material Safety Law). As the LED illumination driving IC, for example, LC5200 series (for example, LC5202S) manufactured by Sanken Electric Co., Ltd. can be used.

  A power cord 19 (FIG. 4) is connected to the printed circuit board P. The power cord 19 is drawn into the wiring space S through the cord holder 21 (FIG. 5B) set on the back plate 14 and the upper plate 15 of the main body case 9, and the printed circuit board P (FIG. 4). It is connected to the. The cord holder 21 is made of resin to ensure insulation.

  As shown in FIG. 5B, the cord holder 21 can be attached to the longitudinal corners of the back plate 14 and the upper plate 15 of the main body case 9. The cord holder 21 has openings 22 on both the back surface side and the side surface (end surface) side of the upper plate 15 of the main body case 9, and the power cord 19 can be pulled out (routed) from any opening 22. It is as.

  A connector can be used instead of the cord holder 21 and attached to the back plate 14 or the upper plate 15 of the main body case 9 so that the power cord 19 can be attached to and detached from it.

  Applying a waterproofing agent to the surfaces of the power supply component 20 and the printed circuit board P or coating them with a waterproofing agent to perform waterproofing is suitable for use around water.

[Power supply case]
The power supply unit 8 supplies power to the light source unit 4. As shown in FIGS. 2 and 3, the light guide plate 5 and the reflective material 6 accommodated in the accommodation space 13 of the main body case 9 and the outside thereof are provided. The light source unit 4 disposed in the space is also provided with a function of a cover for preventing the light source unit 4 from falling out (not falling off) from the accommodating space 13. Therefore, as shown in FIG. 2, the power supply case 7 of the power supply unit 8 is formed in a thin box shape having the same thickness as the main body case 9 and is slid from the side opening 17 at both ends in the longitudinal direction of the main body case 9. The side opening 17 can be closed by being inserted into the inside 13.

  Two support pieces 25 (FIG. 4) project from the side surface (inner surface) of the power supply case 7 on the light source unit 4 side. As shown in FIG. 5A, the support piece 25 is inserted into the back side of the LED case 3 of the light source unit 4 when the power supply case 7 is accommodated in the accommodation space 13 of the main body case 9. Can be supported from the back side.

  A flange 26 is provided on the side surface (outer surface) opposite to the support piece 25 of the power supply case 7. When the power supply unit 8 is inserted into the housing space 13 of the main body case 9, the flange 26 is addressed to both end surfaces in the longitudinal direction of the main body case 9 so that the side opening 17 of the housing space 13 can be closed. .

  As shown in FIG. 3, the power supply case 7 is provided with two concave spaces 27, and a stop hole 28 is opened in a bottom plate in the concave space 27, such as screws and screws inserted into the concave space 27. The fixing tool 30 is inserted until it is inserted from the stop hole 28 through the insertion hole 29 of the back plate 14 of the case body 9, and the fixing tool 30 is screwed into the bottom plate of the storage part D of the mirror cabinet B as shown in FIG. Thus, the power supply unit 8 can be attached to the container D. With this attachment, the thin luminaire 1 of the present invention is attached to the housing D. The concave space 27 is closed with a lid 31 (FIG. 3) so that the fixing tool 30 can be hidden.

  In this embodiment, the power supply case 7 is made of resin, but the power supply case 7 may be made of metal. When it is made of metal, it is desirable to subject the surface to insulation treatment (for example, treatment for coating an insulation material).

  In the embodiment shown in FIG. 2, the power supply unit 8 is provided on both sides of the light source unit 4, but in the present invention, one is not the power supply unit 8, but only the power supply case 7 without the power supply circuit 10. The power supply case 7 in this case serves as a cover for closing the side opening 17 of the main body case 9.

  The external appearance of the thin luminaire 1 of the present invention is shown in FIGS. The left and right sides of the side view appear the same. 6A is a cross-sectional view taken along the line AA in FIG. 8A, and a cross-sectional view taken along the line BB in FIG. 6B is shown in FIG. The cross section taken along the line CC is as shown in FIG.

  The thin lighting device 1 of the present invention can be used for various purposes in addition to being attached to a vanity. For example, below a hanging cupboard having a storage space (such as a clog box provided at a front door or a kitchen storage provided in a kitchen). It can be used as a foot lamp or hand lamp. The thin luminaire 1 of the present invention can be used as direct illumination, but is also suitable for use as indirect illumination. Moreover, although the said embodiment demonstrated as an example the case where the thin illuminating device 1 is attached downward, an attachment direction can be suitably changed according to a use.

1 Thin luminaire 2 LED
3 LED case 3a, 3b Nipping piece 4 Light source unit 5 Light guide plate 5a Side surface (short side surface) of light guide plate
5b (light guide plate) upper surface 5c (light guide plate) lower surface 6 reflector 7 power supply case 8 power supply unit 9 main body case 10 power supply circuit 11 reflective sheet 12 front opening 13 accommodation space 14 (main body case) Back plate 15 (main body case) upper plate 16 (main body case) lower plate 17 (main body case) side opening 18 wiring cord (lead wire)
DESCRIPTION OF SYMBOLS 19 Power cord 20 Power supply component 21 Cord holder 22 Opening portion (of the cord holder) 25 Support piece 27 (of the power case) Recessed space 28 (of the power case) Locking hole 29 (of the main case) Insertion hole 30 Fixing tool 31 Lid A Dressing table body B Mirror cabinet C Three-sided mirror D Storage part E Lower end part P Printed circuit board S Wiring space

Claims (12)

In a lighting fixture that can be attached to a storage body and can illuminate the lower part of the storage body,
A light source unit equipped with one or two or more LEDs on the base, a light guide plate provided in the direction of the emission direction of the LED light, a reflector, and a power circuit for the LED are housed in a thin main body case,
The main body case is horizontally long,
A light guide plate is disposed in the main body case,
A light source unit is disposed outside the peripheral end surface of the light guide plate,
A power circuit is disposed outside the light source unit,
The light guide plate, the light source unit, and the power circuit are arranged in a row in the main body case,
The reflective material is provided on one or two or more surfaces of the peripheral end surface other than the end surface facing the LED and the back surface of the light guide plate .
A thin luminaire characterized by that. The thin illuminating device according to claim 1,
The reflective material is a reflective sheet (including a film and a thin plate) or a reflective agent.
A thin luminaire characterized by that. The thin illuminating device according to claim 1 or 2 ,
The power supply circuit is housed in a power supply case to make a power supply unit.
The power supply unit is disposed in the main body case,
A thin luminaire characterized by that. The thin illuminating device according to claim 3 ,
The light source unit, the light guide plate, and the power supply unit are thin enough to be accommodated in the main body case, so that they are not protruded outside the main body case.
A thin luminaire characterized by that. In the thin illuminating device according to claim 3 or 4 ,
The irradiation surface and side surfaces of the main body case are opened,
A power supply unit, a light source unit, a light guide plate, a light source unit, and a power supply unit are accommodated in the order from the opening and arranged in a row in the main body case.
A thin luminaire characterized by that. The thin illuminating device according to claim 5 ,
One of the two power supply units is only a power supply case without a power supply circuit.
A thin luminaire characterized by that. The thin illuminating device according to claim 5 ,
Either one of the two light source units is only a base without an LED.
A thin luminaire characterized by that. The thin illuminator according to any one of claims 1 to 7 ,
On the back side of the main body case and on the back side of the light guide plate or the reflective material, a wiring space for wiring a power cord, lead wires, etc. was provided.
A thin luminaire characterized by that. The thin illuminating device according to any one of claims 1 to 8 ,
A cord insertion opening for pulling out the power cord was opened on either the side, top, or bottom of the peripheral wall of the main body case.
A thin luminaire characterized by that. The thin illuminator according to claim 9 ,
The cord insertion opening is opened to communicate with the continuous side and upper surface, side and lower surface, and can be pulled out from any surface that communicates the power cord.
A thin luminaire characterized by that. The thin illuminating device according to any one of claims 1 to 10 ,
The power supply circuit or / and the light source unit has been subjected to waterproofing treatment and / or moisture-proofing treatment,
A thin luminaire characterized by that. The thin illuminator according to any one of claims 1 to 11 is attached to a bottom surface of a storage body such as a hanging shelf or a three-sided mirror having a storage space inside, with its irradiation surface facing down.
A storage body characterized by that.

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