JP5215256B2 - Mirror with anti-fogging function - Google Patents

Description

  The present invention relates to a mirror with an anti-fogging function capable of preventing the mirror surface from being clouded by the heat radiation of the LED and illuminating the periphery of the mirror.

  Mirrors are often installed in places that handle hot water and water, such as washstands, drinking fountains, hand washing places, bathroom changing rooms, and bathrooms. In places where hot water or water is handled, there is a lot of moisture in the air, which can cause condensation and cloud the mirror, making it difficult to see the mirror.

  Conventionally, in order to prevent condensation, a method of raising the mirror surface temperature by installing a heater such as a heat ray on the back of the mirror has been adopted. However, such a method has a problem that it takes time to raise the temperature of the mirror surface, complicates the equipment, and the heater is expensive, resulting in high cost, high power consumption, and high running cost.

  In order to solve the above problem, Patent Document 1 proposes a method for increasing the temperature of the mirror surface by using heat radiation of the LED.

JP 2008-220493 A

  Patent Document 1 also aims to illuminate the mirror surface as the temperature of the mirror surface rises, so the LED light-emitting surface faces the mirror surface, the LED heat dissipation surface (side opposite to the light-emitting surface) faces the mirror back surface, A heat conductor is disposed on the heat radiation surface of the mirror, and the temperature of the back surface of the mirror is raised by heat transfer from the heat conductor. For this reason, the thermal conductivity was poor, the temperature raising efficiency of the mirror was not ridiculous, and the anti-fogging effect was not fully exhibited. In addition, since the LED is directly illuminated from the back of the mirror, there is a problem that this illumination portion cannot be used as a mirror.

  The object of the present invention is to provide a mirror with an anti-fogging function that efficiently uses the heat dissipation of the LED to raise the mirror surface temperature to prevent the mirror surface from being clouded, and if necessary, can also illuminate the surroundings of the mirror There is to do.

  The mirror with anti-fogging function of the present invention is a mirror with anti-fogging function in which an LED is attached to the rear surface of the mirror and the mirror surface is prevented from being clouded by the heat radiation of the LED. It is attached to the back of the mirror via a high thermal conductivity material.

  The mirror with the anti-fogging function of the present invention is a mirror with an anti-fogging function in which an LED is installed on the back of the mirror and prevents the mirror surface from being clouded by the heat radiation of the LED. The LED is attached to the high thermal conductive material with the light emitting surface oriented perpendicularly or substantially perpendicular to the back surface of the mirror with the LED facing the high thermal conductive material.

  In either case, a light guide plate is arranged on the outer peripheral side of the mirror from the back of the mirror, and the light from the LED is guided to the outer peripheral side of the mirror by the light guide plate so that the outer periphery of the mirror can be illuminated. You can also

  The mirror with anti-fogging function of the present invention is provided with a human sensor around the mirror or around it, so that the LED emits light when the human sensor detects the presence of a person, and the LED does not emit light when no human presence is detected. You can also

The mirror with the anti-fogging function of the present invention has the following effects.
(1) Since the heat dissipation surface of the LED is attached directly to the back surface of the mirror or via a high thermal conductive material, the heat dissipation from the LED can be efficiently transferred to the mirror surface, and the anti-fogging efficiency is good.
(2) Since the LED having a long life is used as a heat source, the anti-fogging effect of the mirror is maintained for a long period of time, and there is almost no trouble of replacing the LED, and maintenance and management become easy.
(3) Since an LED is used, the structure is simpler and smaller than the case where a heating wire is arranged on the back of the mirror, an inexpensive product can be easily manufactured, less power is consumed, and there is an energy saving effect. .
(4) Since the light of the LED can be guided from the back of the mirror to the outside of the mirror by the light guide plate, the mirror periphery can be illuminated in addition to preventing the mirror surface from being clouded.
(5) By providing a human sensor, it is possible to save labor for switch operation, to prevent waste of energy, and to save energy.

FIG. 3 is a perspective view of a mirror with an anti-fogging function in which an LED is directly attached to the back of the mirror with its heat dissipation surface facing the back of the mirror. The perspective view of the mirror with a cloudy stop function which attached the heat dissipation surface of LED toward the high heat conductive material of the back of a mirror. FIG. 3 is a perspective view of a mirror with an anti-fogging function in which an LED heat dissipating surface is attached to a high heat conductive material on the back of the mirror, a light emitting surface is turned sideways, and a light guide plate is disposed on the side of the light emitting surface. The AA arrow side view of FIG. The BB arrow side view of FIG.

(Embodiment 1)
One embodiment of a mirror with a cloudy stop function of the present invention will be described with reference to FIG.
FIG. 1 is a perspective view of the mirror 1 with a cloudy stop function of the present invention as viewed from the back side. In this embodiment, the shape of the mirror 1 is a rectangle, but the shape of the mirror 1 can be any shape such as a polygon, a circle, an ellipse, or a shape with curved lines.

The heat radiating surface of the LED 2 is directly attached to the back surface of the mirror 1. In the figure, the LEDs 2 are attached to six locations on the back surface of the mirror 1, but the number and positions of the LEDs 2 can be installed at one or more arbitrary locations on the back surface of the mirror 1. Desirably, it is good to arrange | position so that each LED2 can thermally radiate heat uniformly with respect to the whole mirror.

The LED 2 can be of any light emission amount (heat generation amount), but a power LED is suitable in view of the heat dissipation effect.

The LED 2 in FIG. 1 is directly attached to the back surface of the mirror 1 (hereinafter referred to as “mirror back surface”), the heat radiation surface is directed to the mirror back surface, and the light emitting surface is opposite to the mirror back surface (the front side in FIG. 1). It is attached toward.

There are various methods for attaching the LED 2 to the back of the mirror, such as an adhesive method using an adhesive or double-sided tape, a fixing method using an attachment jig such as an L-shaped bracket, and a method of incorporating the LED 2 into the back in the manufacturing process of the mirror 1. Can be adopted. When using the bonding method, it is desirable to use an adhesive or a double-sided tape containing a high thermal conductive material such as aluminum, copper or Lahima (registered trademark) in order to efficiently propagate the heat radiation from the LED 2 to the back of the mirror. .

In FIG. 1, a lighting fixture 3 is installed above the mirror 1. A plurality of LEDs 2 are arranged in a horizontal row (in the width direction of the mirror) in the illuminating device 3, and the mirror surface can be illuminated from above by the light emission of these LEDs 2. If possible, the illuminator 3 is not limited to the LED 2, and a thin fluorescent lamp, another electric lamp, or the like can be used. The illuminator 3 can be disposed with the light emitting surface facing the mirror surface (the back side in FIG. 1), or can be disposed downward. In either case, the mirror surface side can be illuminated.

The LED 2 installed on the back of the mirror is connected to a power source 4, and if the LED 2 of the lighting fixture 3 is also connected to the same power source 4, one power source 4 can be shared.

A human sensor 5 is connected to the power source 4, and the human sensor 5 switches ON / OFF of the power source 4. Of course, the human sensor 5 may not be installed, and the switch may be manually turned on / off.

(Usage example of Embodiment 1)
In the mirror 1 of FIG. 1, when a person stands in front of it, the human sensor 5 detects the person and turns on the power supply 4, and the six LEDs 2 installed on the back surface of the mirror emit light to dissipate heat. The back surface of the mirror is heated by the heat radiation, the temperature of the mirror 1 gradually rises from the back of the mirror, the temperature of the mirror surface also rises, prevents condensation of moisture in the air and prevents clouding of the mirror surface. Can do. At the same time, the LED 2 of the illuminator 3 also emits light to illuminate the mirror surface.

(Embodiment 2)
2nd Embodiment of the mirror with a cloudy stop function of this invention is described based on FIG.
The present embodiment is a case where the LED 2 of the first embodiment is attached to the rear surface of the mirror via a high thermal conductive material, and the basic structure and usage are the same as those of the first embodiment.

  FIG. 2 is a perspective view of the mirror 1 with the anti-fogging function of the present invention as viewed from the back side. A block-like high heat conductive material 6 is attached to the back surface of the mirror 1, and the LED 2 is attached to the high heat conductive material 6. The LED 2 is attached to the high heat conductive material 6 with its heat dissipation surface facing the back of the mirror (the back side of the paper in FIG. 2) and the light emitting surface facing the opposite surface (the front side of the paper in FIG. 2).

In order to efficiently propagate the heat radiation from the LED 2 to the mirror 1, aluminum, copper, or lahima is used as the high thermal conductive material 6. The high thermal conductive material 6 can be in various shapes such as a block shape, a thin plate shape having a large surface area, a sheet shape, and a tape shape. As long as the high thermal conductivity material 6 has a high thermal conductivity, it can be used even if it is other than aluminum, copper or lahima, and other metals may be used. Lahima is usually in powder form, so it can be contained in resin blocks, applied to the surface of blocks made of resin, aluminum, copper, etc. Can be used by attaching to the surface of a block made of resin or the like, or in various modes.

In FIG. 2, the shape of the high heat conductive material 6 is a hexahedral block-shaped hexahedron. However, the shape is not limited to this shape, and other arbitrary shapes such as a circular shape and a star shape may be used. Thickness and surface area are desirable.

A method of attaching the high heat conductive material 6 to the back of the mirror, a method of fixing the LED 2 to the high heat conductive material 6, an adhesive method using an adhesive or a double-sided tape, a bolt fixing method using a jig such as an L-shaped bracket, Various methods such as a method of incorporating from the manufacturing process can be employed. When the bonding method is used, it is desirable to use a highly heat conductive adhesive and double-sided tape in order to efficiently transmit the heat radiation from the LED 2 to the back of the mirror.

(Embodiment 3)
3rd Embodiment of the mirror with a cloudy stop function of this invention is described based on FIG.
The embodiment of FIG. 3 is an embodiment for explaining a case where the LED 2 is mounted on the back surface of the mirror so that the light emitting surface of the LED 2 is substantially perpendicular (including vertical) to the back surface of the mirror. The method of use is the same as in the first and second embodiments.

  FIG. 3 is a perspective view of the mirror 1 with a cloudy stop function of the present invention as seen from the back side. A block-like high heat conductive material 6 is attached to the back surface of the mirror 1, and an LED 2 is attached to the side surface of the high heat conductive material 6. The light emitting surface of the LED 2 is substantially perpendicular (including vertical) to the back of the mirror and faces the outer periphery of the mirror 1, and the heat dissipation surface of the LED 2 is substantially perpendicular to the back of the mirror and is the center of the mirror 1. Facing the direction. Specifically, the LED 2 attached to the three high heat conductive materials 6 on the right side of FIG. 3 has the light emitting surface facing the right side and the heat radiation surface facing the left side, and is attached to the three high heat conductive materials 6 on the left side. The LED 2 has a light emitting surface facing left and a heat radiating surface facing right. The two LEDs 2 arranged at the top of FIG. 3 may be mounted on the upper side surface of the high thermal conductive material 6 so that the light emitting surface is in the upward direction, and arranged at the bottom of FIG. The two LEDs 2 may be mounted on the lower surface of the high thermal conductive material 6 so that the light emitting surface faces downward. In short, if the LED 2 is mounted so that the heat radiating surface of the LED 2 is in contact with the high thermal conductive material 6 and the light emitting surface of the LED 2 is emitted to the outside of the mirror 1, the light direction of the LED 2 is any one of up, down, left, and right. It doesn't matter. By emitting light from the LED 2 toward the outer periphery of the mirror 1, the periphery of the mirror 1 is illuminated brightly, making it easy to use the mirror even in a dark place.

  The high thermal conductive material 6 can have the same material, shape, structure, and size as the high thermal conductive material 6 of the second embodiment. The arrangement, number and mounting method of the high heat conductive material 6 in FIG. 3, the method for mounting the LED 2 on the high heat conductive material 6, the tape used for the mounting, the material of the adhesive, the performance, etc. can be arbitrarily selected, Embodiment 2 You can also do the same.

  In FIG. 3, the light guide plates 7 a and 7 b are installed on the side of the light emitting surface of the LED 2 on the back side of the mirror. The light guide plates 7a and 7b are used to efficiently propagate the light emitted from the LED 2 and illuminate the periphery of the mirror 1. As the light guide plates 7a and 7b, a general-purpose light guide plate can be used, or a novel light guide plate newly invented can be used.

  As shown in the side view of FIG. 4, the light guide plates 7a and 7b of FIG. Can be arranged. In this case, a reflection sheet can be provided on the front surface 8a (FIG. 4) and the back surface 8b (FIG. 4) of the light guide plate 7a so that light can propagate efficiently.

  As shown in the side view of FIG. 5, the light guide plates 7a and 7b in FIG. 3 have the light emitting surface of the LED 2 lateral to the light guide plates 7a and 7b so that the light from the LED 2 is diffused and propagated on the back side of the light guide plate 7b. The light guide plates 7a and 7b can be disposed so as to be located outside the back surface. The back surface 9 of the light guide plates 7a and 7b has a wave shape that can increase the light scattering efficiency and increase the propagation area. The shape of the back surface 9 may be other shapes as long as the light scattering efficiency can be increased and the propagation area can be increased.

  The mirror with anti-fogging function of the present invention is not limited to a bathroom in the bathroom or a wash basin. It can be used for mirrors installed in various places. Moreover, it can replace with a mirror and can also apply to a normal glass window and a glass door.

1 Mirror with anti-fogging function 2 LED
3 Lighting fixture 4 Power supply 5 Human sensor 6 High thermal conductivity material 7a Light guide plate (right side)
7b Light guide plate (left side)
8a Front surface of light guide plate 8b Rear surface of light guide plate 9 Back surface of light guide plate

Claims (4)

  In a mirror with an anti-fogging function that installs an LED on the back of the mirror and prevents the mirror surface from being clouded by the heat dissipation of the LED, the LED's heat dissipation surface is directed directly to the back of the mirror or via a high thermal conductive material on the back of the mirror. Mirror with anti-fogging feature characterized by being attached.   An LED is installed on the back of the mirror, and in the mirror with anti-fogging function that prevents the mirror surface from being clouded by the heat radiation of the LED, a high heat conductive material is attached to the back of the mirror, and the light emitting surface of the LED is directed toward the high heat conductive material. A mirror with an anti-fogging function, wherein the LED is attached to the high thermal conductivity material so as to be perpendicular or substantially perpendicular to the rear surface of the mirror.   3. A mirror with anti-fogging function according to claim 1 or 2, wherein a light guide plate is disposed from the back of the mirror to the outer periphery of the mirror, and the light from the LED is guided to the outer periphery of the mirror by the light guide plate. A mirror with anti-fogging function, characterized in that the outer periphery of the mirror can be illuminated. 4. A mirror with anti-fogging function according to any one of claims 1 to 3, wherein a human sensor is provided in or around the mirror, and when the human sensor detects the presence of a person, the LED emits light and the presence of the person Mirror with anti-fogging function, characterized in that LED does not emit light if no light is detected.

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