WO2012121126A1

WO2012121126A1 - Led illumination device

Info

Publication number: WO2012121126A1
Application number: PCT/JP2012/055317
Authority: WO
Inventors: 生村山; 田中　英之; 賢治三田
Original assignee: 興和株式会社
Priority date: 2011-03-09
Filing date: 2012-03-02
Publication date: 2012-09-13
Also published as: JP5864536B2; JPWO2012121126A1

Abstract

Provided is an LED illumination device comprising an LED light source (34) and a light guiding plate (32), and serving both as an illumination appliance and as a mirror device. The LED illumination device is provided with: a light emitting unit (21) comprising at least an LED light source (34) and a light guiding plate (32); and a mirror (20) which is coupled via an upper frame (16) to a lower frame (17) including the light emitting unit (21), so as to be capable of opening and closing, such that, when in a closed position relative to the lower frame (17), the mirror faces the light emitting unit (21) and reflects downward the illumination light from the light emitting unit (21), and, on the other hand, when in an open position relative to the light emitting unit (21), the mirror serves as a mirror.

Description

LED lighting device

The present invention relates to an LED illumination device, and more particularly to an LED illumination device having an LED light source and a light guide plate.

In recent years, the popularity of LEDs has been remarkably increasing due to the characteristics of LED light sources, such as low-cost, power-saving drive and generally long life, and the condition of increased LED emission brightness. The light source of the illuminating device or the light emitting device that has been implemented with a sphere or the like is replaced with an LED.

In particular, as the light emission brightness of LEDs increases, desk lamps and the like that have previously adopted fluorescent lamps and incandescent lamps have adopted LEDs. In the following Patent Document 1, a configuration in which a mirror is combined with an LED lighting device that emits light from the light emitting surface of a light guide plate is disclosed. The device of this Patent Document 1 is not a simple lighting device, but a woman can make up, It is considered that it can be used as an illuminated mirror (hereinafter referred to as a mirror) used when a man is shaving.

JP 2010-282806 A

The conventional LED lighting device as shown in the above-mentioned Patent Document 1 has a problem that it uses many hinges, has a complicated structure, lacks durability, and tends to be expensive to manufacture.

An object of the present invention is to provide an LED lighting device that can be configured simply and inexpensively and can be conveniently used as a mirror.

In order to solve the above-mentioned problems, in the present invention, in an LED lighting device having an LED light source and a light guide plate, the light emitting unit including at least the LED light source and the light guide plate, and the light emitting unit can be opened and closed. A mirror unit that reflects the illumination light of the light emitting unit facing the light emitting unit when it is in a closed position with respect to the light emitting unit and functions as a mirror when it is in an open position with respect to the light emitting unit The structure which has was adopted.

According to the above configuration, when the mirror unit that can be opened and closed with respect to the light emitting unit is closed with respect to the light emitting unit, it functions as a reflecting member that reflects the illumination light of the light emitting unit, while it is open to the light emitting unit. Sometimes it can function as a reflecting member of a mirror, and it is possible to easily and inexpensively provide an LED lighting device having a different added value from a single-function product such as a lighting fixture or a mirror with a small number of parts. .

Further, when the mirror unit is closed with respect to the light emitting unit, the mirror unit functions as a reflecting member of the light emitting unit, that is, the mirror unit is configured to function as a part of the light emitting unit, so that sufficient illumination is provided. Efficiency can be ensured.

Furthermore, when the mirror unit is opened with respect to the light emitting unit and the device is used as a mirror, the surface emitting illumination of the light emitting unit is positioned near the mirror unit, and the user is faced in applications such as makeup, nail care, and grooming. This makes it easy to work on fine makeup and shaving.

It is the perspective view which showed the external appearance of the LED lighting apparatus which employ | adopted this invention. It is the perspective view which showed the external appearance of the LED lighting apparatus which employ | adopted this invention. It is explanatory drawing which showed the internal structure and operation | movement of the LED lighting apparatus which employ | adopted this invention. It is explanatory drawing which showed the internal structure and operation | movement of the LED lighting apparatus which employ | adopted this invention.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.

1 to 4 show an example of the configuration of an LED lighting device employing the present invention. The exterior parts constituting the housings of each part of the LED lighting device shown in FIGS. 1 to 4 are formed by integral molding of plastic parts, for example.

FIG. 1 and FIG. 2 show the appearance of an LED lighting device employing the present invention. The LED lighting device of this embodiment is configured to be used as a mirror such as a cosmetic mirror. 1 and 2, the main body portion of the LED lighting device includes an upper frame 16, a lower frame 17, and a movable coupling portion 18 that couples the upper frame 16 and the lower frame 17 so as to be freely opened and closed.

In particular, FIG. 2 shows a state in which the movable coupling portion 18 is opened. The movable coupling portion 18 is a member such as a cover having a semi-cylindrical structure, for example, and is swingably coupled to the upper frame 16 and the lower frame 17. ing. The

circles

24 a and 24 b at the edge of the movable coupling portion 18 in FIG. 2 schematically illustrate the support shafts (positions) of the upper frame 16, the lower frame 17, and a coupling member such as a hinge that couples the movable coupling portion 18. It is shown.

The upper frame 16 can be locked at an arbitrary angle in an open state as shown in FIG. 2, for example, a friction member (not shown) is provided at an arbitrary portion of the connecting portion between the upper frame 16 or the lower frame 17 and the movable connecting portion 18. Placed in. Although the maximum angle of the upper frame 16 and the lower frame 17 when the upper frame 16 is opened is arbitrary, for example, if it is configured to be able to open to almost 180 °, the range of uses of the lighting device is widened. .

When the upper frame 16 is closed as shown in FIG. 1, the movable coupling portion 18 is folded so as to cover a bulge portion 22 that protrudes from the rear upper surface of the lower frame 17. Inside the bulge part 22, for example, a power supply part and an array member of an LED light source 34 to be described later are disposed.

Mirrors 20 are provided on the lower surface of the upper frame 16 as shown in FIG. The upper frame 16 and the mirror 20 constitute a mirror part (mirror part) of the present apparatus as a mirror tool.

The mirror 20 is disposed so as to face the light emitting portion 21 on the upper surface of the lower frame 17 when the upper frame 16 is folded (see FIG. 3), and functions as a reflecting member of the light emitting portion 21 and opens the upper frame 16. When the device is used, it constitutes a reflection part which is a main member when the device is used as a mirror.

That is, the mirror part including the upper frame 16 and the mirror 20 is pivotally supported so as to be openable and closable with respect to the light emitting part 21, and faces the upper surface of the light emitting part 21 when in the closed position with respect to the light emitting part 21. When the illumination light of the light emitting unit is reflected in the lower surface direction opposite to the light emitting unit 21, the mirror functions as a mirror of the mirror when in the position opened with respect to the light emitting unit 21.

When the mirror 20 and the upper frame 16 are opened, the light emitting unit 21 (the diffusion plate 31 on the upper surface thereof) illuminates the face of the user who makes up makeup (or shaving, etc.) from the lower front, It is also exposed on the lower surface, and particularly when this apparatus is used as an illumination stand, the light emitting portion 21 (a diffuser plate 33 described later) that faces the lower surface of the lower frame 17 functions as a light emitting surface.

3 and 4 show a cross-sectional structure in the vicinity of the light-emitting portion 21 provided in the lower frame 17 in a state substantially corresponding to FIGS. 1 and 2 respectively.

As shown in FIGS. 3 and 4, the light emitting unit 21 of the present embodiment introduces the light from the LED light source 34 from the side as indicated by the arrow 35, guides the illumination light in the vertical direction, and from the upper and lower surfaces thereof. A light guide plate 32 configured to irradiate illumination light is included.

As is well known, grooves or frustoconical dots are formed on the upper or lower surface of the light guide plate 32 so that the illumination light guide as described above can be efficiently performed.

The LED light source 34 is arranged in the lower frame 17 (or bulge portion 22) along one or more (the number is arbitrary) along the edge of the light guide plate 32. In addition, you may arrange | position the LED light source 34 along the other edge of the light-guide plate 32 not only in the position shown in figure. In that case, you may arrange | position along the some edge of the light-guide plate 32. FIG.

The

diffusion plates

31 and 33 for diffusing the illumination light and irradiating the illumination light in the vertical direction in the figure are respectively arranged on the upper and lower portions of the light guide plate 32. The diffusing

plates

31 and 33 are made of a member capable of obtaining desired illumination light diffusion characteristics, such as a milky white resin plate.

The portions of the LED light source 34, the light guide plate 32, and the

diffusion plates

31 and 33 are disposed in the lower frame 17 (not shown in FIGS. 3 and 4), and the portions of the

diffusion plates

31 and 33 are exposed on the upper and lower surfaces of the lower frame 17. . However, a protective member (not shown) may be disposed (or pasted) on the outer surfaces of the

diffusion plates

31 and 33 in order to protect the

diffusion plates

31 and 33. Further, each of the

diffusion plates

31 and 33 is not limited to one, but may be configured by stacking a plurality of diffusion plates.

In the state where the upper frame 16 is closed as shown in FIG. 3, the illumination light irradiated upward from the light guide plate 32 to the diffusion plate 31 is reflected by the mirror 20 of the upper frame 16, and again the diffusion plate 31 to the light guide plate 32. The light is guided downward (arrow 36) through the diffusion plate 33.

On the other hand, as shown in FIG. 4, when the upper frame 16 and the movable coupling portion 18 are rotated around the coupling members (24a, 24b) and the upper frame 16 is opened, the illumination light is lowered from the light guide plate 32 to the diffusion plate 33. Irradiation is performed not only from (36) but also from the light guide plate 32 to the diffusion plate 31 (40).

The illumination light (40) irradiated upward is auxiliary illumination light for assisting the user's work for makeup (or shaving, etc.), and it is not necessary to make the amount of light so large, as shown in FIG. The upper and lower light distribution ratios when the frame 16 is opened are, for example, about 40:60 in the upper (40) and lower (36), for example, the upper (40) illumination light quantity is lower than the lower (36) illumination light quantity. It is preferable to make it small.

For this purpose, the transmittance of the upper and

lower diffusion plates

31 and 33 is determined including the difference in the amount of light emitted to the upper and lower surfaces of the light guide plate 32. For example, if the transmittance of the upper and

lower diffusion plates

31 and 33 is set to about 10% and 70 to 80%, respectively, a light distribution ratio of, for example, about 40:60 is obtained at the upper side (40) and the lower side (36), respectively. Can do.

As described above, in the LED lighting device according to the present embodiment, the upper frame 16 is folded as shown in FIGS. 1 and 3, that is, when the device is used as a lighting stand, the light emitting surface is opposite to increase the luminous efficiency. A reflector (mirror 20) is disposed on the side surface.

As described above, the main part of the light emitting unit 21 is mainly configured by the laminated structure including the diffusion plate 31, the light guide plate 32, and the diffusion plate 33, and the LED light source 34.

When the upper frame 16 is closed as shown in FIGS. 1 and 3, it can be used as an LED lighting stand, and the mirror 20 on the lower surface of the upper frame 16 faces the upper surface of the light emitting unit 21, thereby illuminating the illumination light of the light emitting unit 21. Since it reflects downward, good illumination efficiency can be obtained.

On the other hand, when used as an LED lighting stand with a mirror as shown in FIGS. 2 and 4, the upper frame 16 and the mirror 20 are rotated with respect to the lower frame 17 housing the light emitting unit 21 and its power supply unit. It is configured to move and open.

In this state, the diffuser plate 31, the light guide plate 32, and the diffuser plate 33 of the light emitting unit 21 are in a double-sided light emission state due to the separation of the upper frame 16 and the mirror 20. The lower part and the vicinity of the upper mirror 20 can be illuminated simultaneously.

The structure around the light emitting unit at the upper part of the LED lighting device is as described above, but the lower structure can be configured as shown in FIGS. 1 and 2 so that it can be used as a lighting stand and mirror.

When closed as described above, the upper frame 16 and the mirror 20 that constitute a part of the lighting device need to be arranged at a height that can match the height of the eye of the person who uses the mirror. is there. Also, in order to use as a lighting stand for illuminating the lower surface with illumination light, the upper frame 16 to lower frame 17 configured as described above must be arranged at a certain height from the lower part of the apparatus.

Therefore, in this embodiment, as shown in FIGS. 1 and 2, the portions of the upper frame 16 to the lower frame 17 including the mirror 20 and the light emitting portion 21 configured as described above are arranged on the base 10 by the support columns 15. It is.

The support column 15 that supports the upper frame 16 to the lower frame 17 including the mirror 20 and the light emitting unit 21 adjusts the height from the base or the attitude to the base so that the illumination angle and the attitude of the mirror 20 can be adjusted. Configure as you can. For example, the support column 15 is formed of a flexible member such as a flexible tube or a telescopic member such as a radio antenna (all of which are not shown) or a part of the support column 15 by using a length or angle of the support column 15. Make the structure adjustable.

The support column 15 is fixed on the base 10 through the support portion 11.

Switches

12 and 13 are arranged in the support portion 11. The

switches

12 and 13 can be configured as a power switch that controls on / off of an LED light source that is an illumination light source, or a switch that performs luminance switching or the like.

A power cable 14 for supplying power from an AC adapter or a commercial AC power source to an internal circuit is attached to the rear portion of the support unit 11. The power cable 14 can be attached either by direct connection or by a structure that is attached via a connector.

Although the shape of the base 10 is arbitrary, it can be configured by weight distribution so that the whole does not easily fall down, or a structure in which a magnet or a suction cup is arranged on the lower surface and coupled to the support plane can be used. . Although depending on the thickness of the base 10, it is possible to provide an illumination stand specialized for makeup, nail care, and grooming by providing a recess 19 for storing small items.

As described above, in the LED illumination device according to the present embodiment, the upper frame 16 and the mirror 20 do not function as a simple mirror, and the mirror 20 illuminates the lower surface when it is closed. It functions as a reflecting member that reflects light, that is, the upper frame 16 and the mirror 20 are configured to function as a part of the light emitting section. Thereby, it is possible to ensure sufficient illumination efficiency as an illumination stand that mainly illuminates the lower part of the upper frame 16 (which does not necessarily mean the vertically lower part depending on the posture of the upper frame 16).

Since the upper frame 16 and the mirror 20 share part of the light emitting part of the illumination stand (mainly for downward illumination), the number of parts can be reduced, and the LED illumination device (also used as a mirror) can be reduced. It can be configured simply and inexpensively, and by switching the upper frame 16 and the mirror 20, it is possible to easily switch the function of a lighting stand (mainly for downward lighting) or a mirror. Can provide users with attractive products with different added values.

In the LED lighting device of the present embodiment, the surface emitting illumination (light emitting unit 21) is positioned near the mirror (mirror 20) when the upper frame 16 and the mirror 20 are opened. In applications such as nail care and grooming, the user can easily understand the unevenness of the face, and operations such as fine makeup and shaving are extremely easy. Also, the apparatus of this embodiment is a stand-type lighting fixture / mirror. Unlike compact mirrors, both hands can be used, ensuring good workability.

In the above description, the upper frame 16 and the lower frame 17 are pivotally supported by the movable coupling portion 18 so that the mirror portion, that is, the upper frame 16 including the mirror 20 can be opened and closed with respect to the lower frame 17 including the light emitting portion 21. The structure of the upper frame 16 and the lower frame 17 corresponding to the movable coupling portion 18 is arbitrary, and the mirror portion, that is, the upper frame 16 including the mirror 20 includes the light emitting portion 21. Any structure that can be opened and closed with respect to 17 can be used.

For example, the mirror unit, that is, the upper frame 16 including the mirror 20 is detachable with respect to the lower frame 17 including the light emitting unit 21, and the upper frame 16 is arranged in a plurality of postures (for example, the upper frame). The same effect as described above can be expected even in a structure that can be mounted in a posture in which 16 is open with respect to the lower frame 17 and a posture in which the upper frame 16 is closed with respect to the lower frame 17. For example, when the upper frame 16 is attached to the lower frame 17 and closed, the illumination light of the light emitting portion 21 is reflected facing the light emitting portion 21 of the lower frame 17 as described above, and the upper frame 16 is removed from the lower frame 17. If the structure functions as a mirror when it is open to the light emitting part 21 of the lower frame 17 (separated from the light emitting part 21 of the lower frame 17 at an arbitrary angle or distance), the structure is the same as described above. The effect can be expected.

The structure of the LED lighting device of the present invention can be suitably applied to a product that also functions as a lighting fixture and a mirror.

DESCRIPTION OF SYMBOLS 10

Base

12, 13 Switch 14 Power cable 15 Support | pillar 16 Upper frame 17 Lower frame 18 Movable coupling part 19 Recessed part 20 Mirror 21 Light emitting part 22 Bulge part 31 Diffusion plate 32 Light guide plate 33 Diffusion plate 34 LED light source

Claims

In an LED lighting device having an LED light source and a light guide plate,
A light emitting unit including at least the LED light source and the light guide plate;
The light emitting unit can be opened and closed. When the light emitting unit is in a closed position, the light emitted from the light emitting unit is reflected toward the light emitting unit and opened to the light emitting unit. An LED illumination device having a mirror portion that functions as a mirror when in a closed position.
The LED illumination device according to claim 1, wherein a diffusion plate that diffuses illumination light and emits illumination light by surface emission is provided on an irradiation surface of the light guide plate of the light emitting unit.
The part including the mirror part and the light emitting part is disposed on a base, and means for adjusting the height of the part including the mirror part and the light emitting part from the base or the posture with respect to the base is provided. The LED lighting device according to claim 1, wherein:
4. The mirror unit according to claim 1, wherein the mirror unit is pivotally supported with respect to the light emitting unit so that the mirror unit can be opened and closed with respect to the light emitting unit. LED illuminating device of description.