CN204879723U - Lighting device - Google Patents

Abstract

The utility model provides a lighting device, this lighting device can reach simply by the transparent glass who is set up on the structure of the regulation that has been settled, can protect this transparent glass's individual privacy again. The lighting device (1) provided so as to face transparent glass provided on a predetermined structure, comprises: the LED light source includes a light guide plate (20) facing the transparent glass, and an LED module (11) (light source) disposed opposite to an end surface of the light guide plate (20).

Description

lighting device

technical field

The utility model relates to a lighting device.

Background technique

Solid-state light-emitting elements such as light-emitting diodes (LED: Light Emitting Diode) are expected to be used as light sources for various products because of their small size, high efficiency, and long life.

For example, instead of lighting devices using light bulbs, various lighting devices using LEDs have been proposed. Among lighting devices using LEDs, a lighting device using a light guide plate for guiding light emitted from LEDs has been studied (Patent Document 1).

(Prior art literature)

(patent documents)

Patent Document 1: Japanese Unexamined Patent Publication No. 2014-78459

For example, in a house or a shop, it is more convenient to install a lighting function in a place where there is no lighting function originally.

However, once a building such as a residence or a store is built, it is relatively difficult to make the building structure have a lighting function. In other words, it is relatively difficult to provide a lighting function afterward in a structure that does not originally have a lighting function.

In addition, although glass such as glass windows is provided on the building structure, since the glass itself is transparent, the inside of the house can be seen from the outside, which affects personal privacy. Therefore, in order to protect personal privacy, the window glass is made into frosted glass, or the window glass is covered with blackout curtains, blackout curtains, blinds, etc.

However, if the glass of the window is used as frosted glass, although the inside of the house cannot be seen from the outside, the outside of the house cannot be seen from the inside of the house either. In addition, if the glass window is covered with a blocking curtain or the like, the opening and closing of the curtain must be performed, which is also troublesome.

Utility model content

In order to solve the above problems, the utility model aims to provide a lighting device that can be easily installed on the transparent glass that has been installed in a predetermined structure and can protect the privacy of the transparent glass.

In order to achieve the above object, one aspect of the lighting device according to the present invention is a lighting device which is arranged so as to face transparent glass installed in a predetermined structure, This lighting device includes: a light guide plate facing the transparent glass; and a light source disposed so as to face an end surface of the light guide plate.

The transparent glass may be freely openable and closable with respect to the predetermined structure.

The predetermined structure may be a window, and the transparent glass may be attached to a frame of the window.

The illuminating device may further include a power supply for supplying electric power for turning on the light source to the light source, and the power supply is supplied via contactless from a power supply unit provided in the predetermined structure. , to receive power.

It is also possible that a plurality of prisms are provided on one main surface of the light guide plate, and each of the plurality of prisms reflects the light emitted by the light source and incident from the end surface to the other main surface. side.

The main surface of the one side may face the transparent glass.

The lighting device related to the utility model can be easily installed on the transparent glass on the predetermined structure that has already been installed, and can also protect the personal privacy of the transparent glass.

Description of drawings

FIG. 1 is a perspective view of a lighting device according to the embodiment.

Fig. 2A is a cross-sectional view of the lighting device according to the embodiment at the line A-A of Fig. 1 .

Fig. 2B is a cross-sectional view of the lighting device according to the embodiment at the line B-B in Fig. 1 .

Fig. 3 is a diagram showing an example of installation of the lighting device according to the embodiment.

Fig. 4 is a diagram for explaining a power supply method of the lighting device according to the embodiment.

Fig. 5A is a cross-sectional view of a case where the lighting device according to the embodiment is installed on a window (window closed state).

Fig. 5B is a cross-sectional view in a case where the lighting device according to the embodiment is installed on a window (window open state).

Fig. 6A is a plan view (light-off state) when the lighting device according to the embodiment is installed on a window.

Fig. 6B is a plan view (lighted state) when the lighting device according to the embodiment is installed on a window.

FIG. 7 shows another example of installation of the lighting device according to the embodiment.

Explanation of reference signs

1 lighting device

10 light source components

11LED module (light source)

20 light guide plate

20a end face

20b back (one side surface)

20c surface (face on the other side)

21 prisms

31 power supply

100 windows

110 window glass

Detailed ways

Embodiments of the present invention will be described below. Furthermore, the embodiments to be described below are all preferred specific examples of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions and connections of components, steps, and the order of steps shown in the following embodiments are all examples, and the intention is not to limit the present invention. Therefore, among the components in the following embodiments, the components not described in the independent claims showing the highest concept of the present invention will be described as arbitrary components.

In addition, each drawing is a schematic diagram and is not a strict illustration. Moreover, in each figure, the same code|symbol is attached|subjected to the structure which is substantially the same, and the overlapping description is abbreviate|omitted or simplified.

(implementation mode)

First, the configuration of the lighting device 1 according to the embodiment will be described with reference to FIGS. 1 , 2A, and 2B. FIG. 1 is a perspective view of a lighting device 1 according to the embodiment. FIG. 2A is a cross-sectional view of the lighting device 1 at the line A-A of FIG. 1 , and FIG. 2B is a cross-sectional view of the lighting device 1 at the line B-B of FIG. 1 .

As shown in FIG. 1 , FIG. 2A and FIG. 2B , the lighting device 1 includes: a light source assembly 10 , a light guide plate 20 , and a power supply assembly 30 . In the present embodiment, the lighting device 1 is installed so as to face transparent glass installed in a predetermined structure. For example, the lighting device 1 is installed so as to face transparent glass (window glass) attached to a window frame.

As shown in FIGS. 2A and 2B , the light source module 10 has an LED module 11 and a housing 12 for accommodating the LED module 11 .

The LED module 11 is a light source arranged to face the end surface 20 a of the light guide plate 20 . That is, the LED module 11 and the light guide plate 20 form an edge lighting structure.

The LED module 11 is, for example, a light emitting module that emits white light, and has a substrate 11a and one or more light emitting elements 11b mounted on the substrate 11a.

The substrate 11a is an elongated substrate, for example, a wiring substrate in which wiring is patterned. As the substrate 11a, a ceramic substrate, a resin substrate, or the like can be used.

The light emitting element 11b is, for example, a packaged surface mount (SMD: Surface Mount Device) type LED element, and includes a resin container (package), an LED chip (bare chip) arranged in the container, and a Sealing parts for sealing LED chips.

And, when the light-emitting element 11b is an SMD-type LED element that emits white light, for example, a blue LED chip that emits blue light when energized can be used as the LED chip; Silicone resin (phosphor-containing resin).

In this embodiment, the plurality of light emitting elements 11b are mounted at equal intervals along the longitudinal direction of the substrate 11a. Furthermore, each light emitting element 11 b is arranged on the substrate 11 a such that the main light emitting surface faces the end surface 20 a of the light guide plate 20 .

In addition, the light emitting element 11b itself may be an LED chip (bare chip), that is, an LED element. In this case, the LED module 11 has a COB (Chip On Board: Chip On Board) structure in which an LED chip (light emitting element 11 b ) is directly mounted on the substrate 11 a. For example, a flat mounting substrate is used as the substrate 11a, and by mounting one or more LED chips (light emitting elements 11b) on the mounting substrate, an LED module with a COB structure can be configured and used as the LED module 11.

And, in the case of using a COB structure LED module that emits white light, for example, a blue LED chip is used as the LED chip (light emitting element 11b), and the sealing member made of a silicone resin containing a yellow phosphor is used to seal the chip. A blue LED chip will do.

The light guide plate 20 is a plate-shaped optical component having a rectangular shape in plan view. The light guide plate 20 is a translucent member, and is made of a translucent resin material such as acrylic or polycarbonate, for example. The light guide plate 20 in this embodiment is formed of a transparent resin material with high transmittance that can see through to the other side.

Furthermore, the light guide plate 20 is, for example, a thin light guide sheet having flexibility. Accordingly, it is possible to easily bond the light guide plate 20 and the transparent glass together. In addition, the light guide plate 20 may be hard or film-like.

As shown in FIGS. 2A and 2B , the light guide plate 20 has an end surface 20 a opposite to the LED module 11 . Furthermore, as shown in FIG. 2B , the light guide plate 20 has two opposing main surfaces, one main surface is the back surface 20 b, and the other main surface is the front surface 20 c.

The surface 20c of the light guide plate 20 is a main light emitting surface (pseudo light emitting surface), and most of the light traveling in the light guide plate 20 is emitted to the outside from the main light emitting surface. In addition, the light traveling in the light guide plate 20 is also emitted to the outside from the back surface 20b. In addition, the light traveling in the light guide plate 20 is also emitted to the outside from the end surface (lower end) opposite to the end surface 20a.

As shown in FIG. 2B , a plurality of prisms 21 are provided on the back surface 20 b of the light guide plate 20 . Each of the plurality of prisms 21 can reflect light emitted from the LED module 11 and incident from the end surface 20 a toward the surface 20 c so that the light can be extracted to the outside of the light guide plate 20 . Accordingly, planar pseudo-light emission appears on the surface 20 c of the light guide plate 20 . The prism 21 in this embodiment is a minute concave portion processed into a predetermined shape, but it may also be a convex portion. The plurality of prisms 21 are arranged in a matrix, for example.

The light guide plate 20 configured as described above is arranged to face, for example, window glass (transparent glass). In the present embodiment, the light guide plate 20 is arranged so that the back surface 20b provided with the prism 21 faces the window glass, but it may be arranged so that the front surface 20c faces the window glass.

The power supply unit 30 is a power supply box, and, as shown in FIGS. 2A and 2B , has a power supply 31 and a housing 32 for accommodating the power supply 31 .

The power supply 31 is, for example, a power supply circuit (circuit unit) composed of a circuit board and circuit components mounted on the circuit board, and converts electric power received by the power supply unit 30 into predetermined power. In addition, a dimming circuit, a booster circuit, and the like may be appropriately selected and incorporated into the power supply 31 .

In this embodiment, the power supply 31 receives electric power from the outside of the lighting device 1 through contactless power supply. For example, electric power is received by non-contact power supply from a power supply unit (not shown) installed on a predetermined structure on which the lighting device 1 is mounted.

And the power supply 31 supplies the electric power for lighting the LED module 11 (light emitting element 11b) to the LED module 11 (light emitting element 11b). Specifically, the power supply 31 converts the electric power received from the outside of the power supply unit 30 into electric power for lighting the LED module 11 , and supplies the electric power to the LED module 11 .

For example, the power supply 31 receives AC power, converts it into DC power, and supplies the DC power to the LED module 11 . In addition, the power supply 31 can also receive direct current. In this case, the power supply 31 receives DC power, converts it into predetermined DC power, and supplies the converted DC power to the LED module 11 .

In addition, the power supply 31 and the LED module 11 are electrically connected by, for example, lead wires (not shown), and electric power is supplied from the power supply 31 to the LED module 11 through the lead wires.

Next, an installation example of the lighting device 1 will be described with reference to FIG. 3 . FIG. 3 shows an installation example of the lighting device 1 according to the embodiment.

As shown in FIG. 3 , the lighting device 1 is installed, for example, on a window 100 installed in a building such as a house or a shop. More specifically, the window 100 is installed in a room such as a living room of a house, a bathroom, or the like.

The window 100 includes: a window glass 110 , a window frame 120 , and a fixing frame 130 . The window glass 110 is attached to the window frame 120 . Specifically, the window glass 110 has a rectangular plate shape, is fitted into a rectangular ring-shaped fixing frame 130 , and is attached to the window frame 120 in a fixed state. The window frame 120 is a predetermined structure and is fixed to a wall of a building or the like.

The window glass 110 can be freely opened and closed relative to the window frame 120 . For example, the window glass 110 is attached to the window frame 120 in a state of being fixed to the fixed frame 130 , and the window glass 110 can be opened and closed by moving the window glass 110 together with the fixed frame 130 .

The window glass 110 is transparent glass that is transparent to visible light, and has a high transmittance such that the other party can be seen through. Therefore, the user inside the house can see the scenery outside the house through the window glass 110 .

The lighting device 1 is arranged to face the window glass 110 . Specifically, the lighting device 1 is installed such that the light guide plate 20 faces the window glass 110 . For example, the back surface 20 b of the light guide plate 20 is attached to the surface of the window glass 110 .

At this time, if the size of the window glass 110 is inconsistent with the size of the light guide plate 20 , the size of the light guide plate 20 may be processed according to the size of the window glass 110 . For example, a larger-sized light guide plate 20 may be prepared in advance, and it may be cut according to the size of the window glass 110 during actual installation. In this way, it can be easily matched to the size of the window glass 110 by simply processing the light guide plate 20 .

Here, referring to FIG. 3 , the power supply method of the lighting device 1 according to the embodiment will be described using FIG. 4 , FIG. 5A and FIG. 5B . FIG. 4 is a diagram for explaining a power supply method of the lighting device 1 according to the embodiment. 5A and 5B are cross-sectional views when the lighting device 1 according to the embodiment is installed on a window 100 , FIG. 5A shows a state where the window 100 is closed, and FIG. 5B shows a state where the window 100 is open.

As shown in FIGS. 3 and 4 , a power supply unit 200 (power supply unit) for supplying predetermined power to the lighting device 1 is provided on the window 100 . The power supply assembly 200 is a power supply box, and has a power supply circuit 210 and a housing 220 for accommodating the power supply circuit 210 . The power supply assembly 200 can be used as an external device of the lighting device 1 or included in the lighting device 1 .

The power supply unit 200 is configured to perform contactless power supply to the power source 31 of the power supply unit 30 . For example, the power supply circuit 210 in the power supply unit 200 receives AC power from an AC power source such as a commercial power supply, and supplies the AC power to the power supply unit 30 (power supply 31 ) through non-contact transmission.

Moreover, the power supply assembly 200 and the power supply assembly 30 are provided separately. Therefore, by changing one of the power supply unit 200 and the power supply unit 30, both can be brought close to or separated from each other.

In this embodiment, the power supply assembly 30 is installed on the window glass 110 or the fixed frame 130 which can be opened and closed, and the power supply assembly 200 is installed on the structure which cannot be opened and closed, that is, the window frame 120 . In this way, when the window glass 110 is opened and closed, the power supply assembly 30 also moves along with the window glass 110 or the fixed frame 130 . Therefore, the power supply unit 200 (casing 220 ) can approach or move away from the power supply unit 30 (casing 32 ) in accordance with the opening and closing of the window glass 110 .

For example, as shown in FIG. 5A , when window glass 110 is closed (window closed state), power supply unit 200 and power supply unit 30 are in the closest state. In this case, in the present embodiment, the power supply unit 200 (casing 220 ) and the power supply unit 30 (casing 32 ) are either almost in contact with each other, or close to each other with only a slight gap. In this state, contactless power supply can be performed from the power supply unit 200 to the power supply unit 30 .

Furthermore, as shown in FIG. 5B , when the window glass 110 is opened (window open state), the power supply unit 200 and the power supply unit 30 are separated. For example, as the opening of the window glass 110 increases gradually, the power supply assembly 200 is gradually separated from the power supply assembly 30 .

Thus, in this embodiment, as a method of feeding power from the power feeding unit 200 to the power unit 30 , contactless power feeding is employed. Accordingly, even when the power supply unit 200 is installed on the window frame 120 and the power supply unit 30 is installed on the window glass 110 , the window glass 110 can be opened and closed, and power can be supplied to the lighting device 1 .

That is, by adopting the contactless power supply, even when the lighting device 1 is installed on the window 100 , the user can open and close the window 100 in the same manner as conventionally without having to worry about the power cord.

In addition, the method of feeding power to the power supply 31 is not limited to contactless power feeding, and a power cord or the like may be used.

Hereinafter, an operation example of the lighting device 1 will be described with reference to FIGS. 6A and 6B . FIG. 6A and FIG. 6B are the same as FIG. 3 , showing the case where the lighting device 1 according to the embodiment is installed on the window 100. FIG. lighting status.

As shown in FIG. 6A , when the lighting device 1 is in an off state (light off state), since the LED module 11 does not emit light, no light enters the light guide plate 20 . Therefore, the light guide plate 20 does not perform simulated light emission.

Therefore, in this case, even if the lighting device 1 is installed on the window 100, since only the light guide plate 20 (transparent plate) is bonded, the transparent state can be maintained. 110 and light guide plate 20 to see the scenery outside the house.

In addition, as shown in FIG. 6B , when the lighting device 1 is turned on (lighted state), since the light emitted from the LED module 11 enters the light guide plate 20 , the light guide plate 20 emits pseudo light.

Therefore, in this case, the window 100 (window glass 110) looks like a translucent panel that emits light, thereby obtaining the effect of a light-diffusing panel. According to this, since the inside of the house cannot be seen from the outside, it is possible to protect the privacy of individuals inside the house. That is, the lighting device 1 can be used as a shade curtain, a shade, a blind, or the like.

Furthermore, in FIG. 6B , the light emitted from the lighting device 1 can be used as illumination light. That is, the window glass 110 can be provided with an illumination function afterwards.

In addition, the lighting device 1 can also be installed by the method shown in FIG. 7 . FIG. 7 shows another installation example of the lighting device 1 according to the embodiment.

In FIG. 7 , the fixing frame 130 for fixing the window glass 110 is a lattice frame, and a plurality of window glasses 110 are fixed in the fixing frame 130 . In FIG. 7 , four sheets of window glass 110 are fixed to a fixing frame 130 .

In this case, a plurality of lighting devices 1 are provided corresponding to each window glass 110 . However, in FIG. 7 , the power supply assembly 30 is only present in one lighting apparatus 1 among the plurality of lighting apparatuses 1, and the other lighting apparatus 1 does not have the power supply assembly 30. In this other lighting apparatus 1, for example, the Lead wires (not shown) are connected from the lighting device 1 having the power supply unit 30 to supply power.

Furthermore, a lighting device 1 having a power supply assembly 30 may also be configured for each of a plurality of window glass 110 , in this case, the number of power supply assemblies 200 needs to be the same as that of the lighting device 1 .

As described above, the lighting device 1 in this embodiment includes the light guide plate 20 facing transparent glass such as the window glass 110 , and the light source (LED module 11 ) disposed opposite to the end surface of the light guide plate 20 .

According to this, simply by installing the lighting device 1 on transparent glass such as the window glass 110, the lighting device 1 can be used as a blind or the like that covers the transparent glass. That is, when the lighting device 1 is turned on, the light guide plate 20 performs pseudo-light emission, so that the privacy protection of the transparent glass can be easily performed.

In addition, in the off state of the lighting device 1 , the user can see the scenery on the opposite side of the transparent glass (window glass 110 ) through the transparent light guide plate 20 as in the case where the lighting device 1 is not installed.

In addition, since the light guide plate 20 that is easy to process is used as an optical member facing the transparent glass in the lighting device 1, the light guide plate 20 can be easily adjusted to the size of the transparent glass. That is, it is possible to realize a lighting device that is not limited by the size of the transparent glass. For example, when the lighting device 1 is installed on the window 100 (window glass 110), the size of the light guide plate 20 can be easily adjusted according to the size of the window frame.

In this way, according to the lighting device 1 of the present embodiment, it is possible to easily attach to the transparent glass already installed on a predetermined structure, and it is possible to protect the personal privacy of the transparent glass.

Furthermore, in the lighting device 1 according to the present embodiment, contactless power feeding is adopted as a method of feeding power from the power feeding unit 200 to the power unit 30 .

Accordingly, even if the transparent glass on which the illuminating device 1 is installed is freely openable like the window glass 110 , the user can open and close the transparent glass as usual without having to worry about a power line for power supply.

Furthermore, in the lighting device 1 of the present embodiment, a plurality of prisms 21 are provided on the back surface 20 b of the light guide plate 20 .

Accordingly, the light of the LED module 11 incident from the end surface 20 a of the light guide plate 20 can be easily taken out of the light guide plate 20 from the surface 20 c of the light guide plate 20 by the plurality of prisms 21 .

(other modified examples, etc.)

As mentioned above, the lighting device which concerns on this invention was demonstrated based on embodiment, However, this invention is not limited by said embodiment.

For example, in the above-described embodiment, the lighting device 1 is provided on the window glass 110 provided on the window 100 , but it may be a transparent glass in which the lighting device 1 is provided in a structure other than the window 100 . Specifically, the lighting device 1 may be installed on transparent glass such as a shop window or a glass cabinet. In addition, the position where the lighting device 1 is installed is not limited by the transparent glass that separates the inside and outside of the house, and may be installed on the transparent glass that separates rooms and the like in the house.

In addition, in the above-mentioned embodiment, the LED module 11 is a B-Y type LED module that emits white light by combining the blue LED chip and the yellow phosphor, but it is not limited thereto. For example, the LED module 11 may be configured to emit white light using a blue LED chip, a red phosphor, and a green phosphor. Furthermore, the LED module 11 may be configured to emit white light by using LED chips that emit blue light, red light, and green light.

In addition, in the above-mentioned embodiment, although the light emitted from the LED module 11 is white light having a constant color temperature, it is not limited thereto. For example, it may be configured such that the light source module 10 (LED module 11 ) emits different luminescent colors by using a plurality of light emitting elements that emit different luminous colors. In this case, the combination of different light colors may be a combination of white light with different color temperatures, a combination of red and blue colored lights with different central wavelengths, or a combination of white light and colored light. Accordingly, various lighting effects can be demonstrated by performing light adjustment and color adjustment.

Furthermore, in the above-mentioned embodiment, although an LED chip is used as the light source of the light source module 10, it is not limited thereto. For example, as the light source of the light source unit 10 , semiconductor light emitting elements such as semiconductor lasers, light emitting elements such as organic EL (Electro Luminescence) or inorganic EL, and other solid state light emitting elements may be used.

In addition, embodiments obtained by various modifications performed by those skilled in the art with respect to the above-mentioned embodiments and modifications, or modifications to the constituent elements in the above-mentioned embodiments and modifications without departing from the gist of the present invention Embodiments realized by any combination of functions and functions are included in the present invention.

Claims (6)

1. A lighting device, characterized in that, The lighting device is arranged so as to face transparent glass installed in a predetermined structure, The lighting unit has: a light guide plate facing the transparent glass; and The light source is disposed opposite to the end surface of the light guide plate. 2. The lighting device according to claim 1, characterized in that, The transparent glass can be freely opened and closed with respect to the predetermined structure. 3. The lighting device according to claim 2, characterized in that, said prescribed structure is a window, The transparent glass is installed in the window frame of the window. 4. The lighting device according to claim 2, characterized in that, The lighting device further includes a power supply for supplying power for lighting the light source to the light source, The power supply receives electric power through contactless power supply from a power supply unit provided in the predetermined structure. 5. The lighting device according to any one of claims 1 to 4, characterized in that, A plurality of prisms are provided on the main surface of one side of the light guide plate, Each of the plurality of prisms reflects light emitted from the light source and incident from the end surface to the other main surface side. 6. The lighting device according to claim 5, characterized in that, The main surface of the one side faces the transparent glass.