JP6922632B2 - Panel and frame members - Google Patents

Description

Embodiments of the present disclosure relate to panels, especially light emitting panels.

Conventionally, as a technique in such a field, for example, there is one described in Patent Document 1 below. Patent Document 1 describes a linear light source, a light guide plate having a light emitting surface that emits light from the light source, a light diffusing plate arranged on the light emitting surface of the light guide plate, and a light emitting surface on the opposite side of the light guide plate. A surface light source device including a light reflector arranged on the back surface is disclosed. The light source, the light guide plate, the light reflector, and the light diffusing plate are located between a frame-shaped first frame member arranged on the periphery of the light emitting surface of the light guide plate and a second frame member arranged on the back surface side of the light guide plate. It is sandwiched between.

Japanese Unexamined Patent Publication No. 2004-213998

However, in the above-mentioned surface light source device, the first frame member has a frame plate portion extending along the light emitting surface of the light guide plate, and the frame plate portion projects from the light diffusing plate to the front side of the surface light source device. Therefore, the sense of unity of the entire planar light source device is impaired, and the appearance is poor.

The embodiment of the present disclosure has been made in view of the above points, and an object of the present disclosure is to provide a panel capable of achieving a sense of unity as a whole.

The panel according to the embodiment of the present disclosure is provided apart from the first plate-shaped member and the second plate-shaped member arranged from the front side to the back side along the uniaxial direction in a direction intersecting the uniaxial direction. A frame member that sandwiches the first plate-shaped member and supports the second plate-shaped member is provided, and the frame member has a first contact portion that abuts on a side end portion of the first plate-shaped member. It has at least a first fitting portion that is connected to the first contact portion and is fitted between the first plate-shaped member and the second plate-shaped member to a predetermined length, and is on the front side. The first plate-shaped member and the frame member are flush with each other.

In the panel of one embodiment of the present disclosure, it is preferable that the front side is provided with a decorative sheet that covers the first plate-shaped member and the frame member.

In the panel of one embodiment of the present disclosure, a third plate-shaped member arranged on the back side of the second plate-shaped member is further provided, and the frame member hits a side end portion of the third plate-shaped member. A second fitting portion that is in contact with the second contact portion and a second fitting portion that is connected to the second contact portion and is fitted between the second plate-shaped member and the third plate-shaped member to a predetermined length. It is preferable to have more.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the third plate-shaped member and the frame member are flush with each other on the back side.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the fitting length of the first fitting portion is shorter than the fitting length of the second fitting portion in the direction intersecting the uniaxial direction.

Further, in the panel of one embodiment of the present disclosure, the frame member extends from the first contact portion to the side opposite to the first fitting portion from the front side wall portion and the second contact portion. It further has a back side wall portion extending to the side opposite to the second fitting portion, and a main body portion connecting the front side wall portion and the back side wall portion, and on the front side, the front side wall portion and the front side wall portion are described. It is preferable that the first plate-shaped member is flush with the first plate-shaped member.

Further, in the panel of one embodiment of the present disclosure, a light source unit having a plurality of point-shaped light emitting elements and a wiring board on which these point-shaped light emitting elements are mounted is further provided, and the light source unit is the main body unit. It is preferable that the space is formed by the front side wall portion, the back side wall portion, the first contact portion, and the second contact portion.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the first plate-shaped member is a light diffusing plate, the second plate-shaped member is a light guide plate, and the third plate-shaped member is a light reflecting plate.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the first plate-shaped member is a light diffusing plate and the second plate-shaped member is a substrate on which a plurality of point-shaped light emitting elements are arranged on the surface.

The frame member according to the embodiment of the present disclosure includes a first plate portion and a second plate portion and a third plate that are bent in the same direction from both ends of the first plate portion and extend so as to face each other. A portion, a fourth plate portion and a fifth plate portion that are bent so as to approach each other from the extending ends of the second plate portion and the third plate portion, and the fourth plate portion and the said portion. A sixth plate portion and a seventh plate portion that are bent in the same direction as the second plate portion and the third plate portion from the end of the fifth plate portion and extend so as to face each other. It is characterized in that one of the sixth plate portion and the seventh plate portion is extended longer than the other.

Further, in the panel of one embodiment of the present disclosure, a light guide plate and a light reflector arranged from the front side to the back side along the uniaxial direction are provided in a direction intersecting the uniaxial direction, and the light guide plate and the light reflector are provided. It is preferable that the frame member has a frame member that supports the light reflector, and an accommodating portion for accommodating the light diffusing plate is provided on the front side of the frame member with respect to the light guide plate.

Further, in the panel of one embodiment of the present disclosure, the frame member supports the upper frame member that supports the light guide plate and the light reflector from above, and the light guide plate and the light reflector from below. It is preferable to have a lower frame member to be provided.

Further, in the panel of one embodiment of the present disclosure, at least one of the upper frame member and the lower frame member extends in a direction intersecting the uniaxial direction, and the light guide plate and the light reflector. Is preferably supported from the outside.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the upper frame member and the lower frame member are line-symmetric with respect to a direction intersecting the uniaxial direction.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the upper frame member and the lower frame member are asymmetric with respect to the direction intersecting the uniaxial direction.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the width of the lower frame member in the uniaxial direction is narrower than the width of the upper frame member in the uniaxial direction.

Further, in the panel of one embodiment of the present disclosure, it is preferable that a reinforcing member supported by the frame member is provided on the back side of the light reflector.

Further, in the panel of one embodiment of the present disclosure, it is preferable that at least one of the upper frame member and the lower frame member is in contact with and fixed to the wall to which the panel is fixed.

Further, in the panel of one embodiment of the present disclosure, it is preferable that at least one of the upper frame member and the lower frame member is fixed apart from the wall to which the panel is fixed.

Further, in the panel of one embodiment of the present disclosure, it is preferable that the upper frame member has a light source accommodating portion for accommodating a light source arranged at an end portion of the light guide plate.

The frame member according to the embodiment of the present disclosure includes a first plate-shaped member and a second plate-shaped member arranged so as to face each other from the front side to the back side along a uniaxial direction, and the first plate-shaped member. A first frame member is provided with a one-side end portion and a first frame member arranged so as to face one side end portion of the second plate-shaped member, and the first frame member extends along the uniaxial direction. The plate portion, the second plate portion configured to bend in the direction intersecting the uniaxial direction at the front end portion of the first plate portion, and the uniaxial portion at the back end portion of the first plate portion. A third plate portion configured to bend in a direction intersecting a direction, a fourth plate portion connected to the second plate portion and configured to bend toward the back side, and the fourth plate portion. The second plate portion, said, has at least a first fitting portion connected to the plate portion and fitted between the first plate-shaped member and the second plate-shaped member to a predetermined length. It is characterized in that at least a part of the first plate-shaped member is housed in the concave region formed by the fourth plate portion and the first fitting portion.

According to the present disclosure, it is possible to achieve a sense of unity as a whole.

It is sectional drawing which shows the panel of 1st Embodiment. It is a perspective view which shows the panel of 1st Embodiment. It is sectional drawing which shows the modification of the panel of 1st Embodiment. It is a partial cross-sectional view which shows the modification of the panel of 1st Embodiment. It is sectional drawing which shows the deformation example of a frame. It is sectional drawing which shows the deformation example of a frame. It is sectional drawing which shows the deformation example of a frame. It is sectional drawing which shows the deformation example of a frame. It is sectional drawing which shows the panel of 2nd Embodiment. It is sectional drawing which shows the modification of the panel of 2nd Embodiment. It is a front view which shows the construction example of a panel. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which shows the panel of 3rd Embodiment. It is sectional drawing which shows the panel of 4th Embodiment. It is sectional drawing which shows the panel of 5th Embodiment. It is sectional drawing which shows the panel of 6th Embodiment. It is sectional drawing which shows the panel of 7th Embodiment. It is sectional drawing which shows the panel of 8th Embodiment. It is sectional drawing which shows the panel of 9th Embodiment. It is sectional drawing which shows the panel of the tenth embodiment.

Hereinafter, embodiments of the panel according to the present disclosure will be described with reference to the drawings. In the following description, an example of a light emitting panel having a light source unit will be given, but it should be noted that the present disclosure applies to panels other than the light emitting panel.

Further, in the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted. Further, in the drawings, the dimensions and the like may be changed or exaggerated with respect to the actual object for the convenience of illustration and comprehension.

In addition, the terms used in the present specification that specify shapes, geometric conditions, and their degrees, for example, "orthogonal", are not limited to a strict meaning and can be expected to have the same function. It shall be interpreted including the range of. For example, it may intersect. Furthermore, unless otherwise specified herein, the terms "board", "film" and "sheet" are based solely on differences in designation and are not distinct from each other. For example, "board" is a concept that includes members that can be called sheets. Therefore, the "light guide plate" is not distinguished only by the difference in the name of the "light guide sheet".

<First Embodiment>
FIG. 1 is a cross-sectional view showing the panel of the first embodiment, and FIG. 2 is a perspective view showing the panel of the first embodiment. As an example of the panel of the present embodiment, the light emitting panel 1 that emits light will be described below. The light emitting panel 1 of the present embodiment is used for lighting for space production different from normal base lighting, and is retrofitted to the ceiling, wall, floor, partition for partitioning the space, etc. of the room, together with the base lighting. Produce a user-friendly light space.

The light emitting panel 1 has a structure having an edge light type surface light source device, and is attached to a wall W of a room by, for example, screwing. The light emitting panel 1 diffuses light from the front side (that is, the inside of the room) to the back side (that is, the wall W side) along the uniaxial direction (horizontal direction in the present embodiment) with the built-in light source unit 2. The three plate-shaped members arranged in the order of the plate 3, the light source plate 5, and the light reflector 4, and the light diffuser plate 3 and the light reflector 4 along the direction orthogonal to the uniaxial direction (that is, the vertical direction). For example, a pair of frame members (upper frame member 6 (corresponding to the first frame member in the present embodiment), lower frame member 7 (corresponding to the second frame member in the present embodiment) while sandwiching and supporting the light guide plate 5). ) And.

The light source unit 2 has a plurality of point-shaped light emitting elements 21 arranged in a straight line and a wiring board 22 on which these point-shaped light emitting elements 21 are mounted, and is housed inside the upper frame member 6. For the point light emitting element 21, for example, a light emitting diode (LED) is used. FIG. 1 shows an example in which the light source unit 2 is arranged on the upper frame member 6 side, but the present invention is not limited to this, and the light source unit 2 may be arranged on the lower frame member 7 side. According to such a configuration, the brightness can be gradually changed on the side closer to the light source unit 2 and the side far from the light source unit 2. Further, the light source unit 2 may be arranged on both the upper frame member 6 side and the lower frame member 7. According to such a configuration, it is possible to realize brightness with high in-plane uniformity.

In the present embodiment, the light guide plate 5 corresponds to the "second plate-shaped member" described in the claims, exhibits a rectangular thin plate, and has a pair of main surfaces facing each other and a pair of main surfaces. It has four side end faces defined between the faces. The light guide plate 5 is arranged below the point-shaped light emitting element 21 so that one of the four side end faces faces the point-shaped light emitting element 21. The side end surface facing the point-shaped light emitting element 21 is an incoming light surface 5a into which the light emitted from the point-shaped light emitting element 21 is incident. The side end surface on the side opposite to the light entry surface 5a (that is, the side away from the point-shaped light emitting element 21) is the facing surface 5b facing the light entry surface 5a.

On the other hand, of the pair of main surfaces, the main surface facing the inside of the room (in other words, the main surface facing the front side) is the light emitting surface 5c, and the main surface opposite to the light emitting surface 5c (in other words, the main surface facing the front side). The main surface facing the back side) is the back side 5d. The light emitting surface 5c is orthogonal to the light entering surface 5a, and emits light incident from the point-shaped light emitting element 21 through the light entering surface 5a toward the light diffusing plate 3. The light guide plate 5 is made of a resin material such as an acrylic resin having high translucency.

In the present embodiment, the light reflector 4 corresponds to the "third plate-shaped member" described in the claims, and the light guide plate is provided so that a gap G1 is formed between the light reflector and the adjacent light guide plate 5. It is arranged away from the back surface 5d of 5. The light reflecting plate 4 has a plate-shaped member capable of diffuse reflection of white, a plate-shaped member made of a material having a high reflectance such as metal, and a thin film (for example, a metal thin film) made of a material having a high reflectance as a surface layer. It may be a plate-shaped member containing the mixture, may be formed by forming a dielectric multilayer film on the plate-shaped member, or a resin in which metal particles or white pigments are dispersed may be applied to the plate-shaped member. Or it may be formed by attaching a film containing these materials to a plate-shaped member.

In the present embodiment, the light diffusing plate 3 corresponds to the "first plate-shaped member" described in the claims, and the light guide plate is provided so that a gap G2 is formed between the light diffusing plate 3 and the adjacent light guide plate 5. It is arranged away from the light emitting surface 5c of 5. The light diffusing plate 3 can adopt various configurations capable of exerting a light diffusing function. For example, it diffuses into a resin plate-shaped member containing a diffusing material or a resin plate-shaped member serving as a base material. A member coated with a binder containing a material, a microlens array sheet in which a microlens array is formed on a resin plate-shaped member as a base material, or the like can be used.

The upper frame member 6 and the lower frame member 7 are formed of a metal material such as aluminum, and are arranged apart from each other at a predetermined distance along the vertical direction. The material of the upper frame member 6 and the lower frame member 7 is not limited to the metal material, but may be a resin material or the like. Since the upper frame member 6 and the lower frame member 7 are vertically symmetrical with respect to the center position of the light emitting panel 1 and have the same structure, only the upper frame member 6 will be described below.

As shown in FIG. 1, the upper frame member 6 is formed so that the cross section is a combination of an upper rectangular shape and a lower tubular shape. Specifically, the upper frame member 6 has a main body portion (first plate portion) 6a extending in the horizontal direction and the same direction (here, the same direction) from the front end portion and the back side end portion of the main body portion 6a. The front side wall portion (second plate portion) 6b and the back side wall portion (third plate portion) 6c, which are bent downward (downward) and extend so as to face each other, and the front side wall portion 6b from the extended end to the back side. The first contact portion (fourth plate portion) 6d that bends vertically to the side end portion of the light diffusing plate 3 and the back side wall portion 6c bends vertically to the front side from the extended end to reflect light. It has a second contact portion (fifth plate portion) 6e that comes into contact with the side end portion of the plate 4. Note that FIG. 1 shows an example in which the side end portion of the light diffusing plate 3 is in contact with the fourth plate portion 6d and the fifth plate portion 6e, but the present invention is not limited to this. A predetermined gap may exist between the side end portion and the fourth plate portion 6d and the fifth plate portion 6e.

The first contact portion 6d and the second contact portion 6e are designed to be close to each other, but are separated from each other by a predetermined distance without hitting each other. Then, a space S that opens downward is formed inside the upper frame member 6 by the main body portion 6a, the front side wall portion 6b, the back side wall portion 6c, the first contact portion 6d, and the second contact portion 6e. There is. The above-mentioned light source unit 2 is housed in the space S.

Further, the upper frame member 6 is connected to the first contact portion 6d and bent downward to be fitted in the gap G2 between the light diffusing plate 3 and the light guide plate 5 (sixth fitting portion (sixth). The second fitting portion (seventh plate portion) connected to the plate portion) 6f and the second contact portion 6e and bent downward into the gap G1 between the light reflecting plate 4 and the light guide plate 5. ) With 6 g. The first fitting portion 6f and the second fitting portion 6g face each other and extend to a predetermined length. As shown in FIG. 1, in the vertical direction, the fitting length of the first fitting portion 6f is shorter than the fitting length of the second fitting portion 6g. For example, when the light emitting panel 1 is arranged on the ceiling side, the direct light from the light source unit 2 reaching the room side can be limited by providing the first fitting portion 6f of the upper frame member 6, and glare is reduced. can. Further, by shortening the fitting length of the first fitting portion 6f, it is possible to increase the light emitting area of the panel. Further, for example, when the light emitting panel 1 is arranged on the floor side, the direct light from the light source unit 2 reaching the room side can be restricted by providing the first fitting portion 6f of the lower frame member 7. Glare can be reduced. Therefore, depending on the arrangement of the light emitting panel 1, even if the fitting length of the first fitting portion 6f is shorter than the fitting length of the second fitting portion 6g in both the upper frame member 6 and the lower frame member 7. Alternatively, in one of the upper frame member 6 and the lower frame member 7, the fitting length of the first fitting portion 6f may satisfy a shorter relationship than the fitting length of the second fitting portion 6g.

The upper end of the light diffusing plate 3 is in contact with the first contact portion 6d of the upper frame member 6, and the lower end thereof is in contact with the first contact portion 6d of the lower frame member 7. The upper frame member 6 and the lower frame member 7 are fixed to the first fitting portion 6f via a plurality of set screws 9. On the front side of the light emitting panel 1, the light diffusing plate 3, the upper frame member 6, and the lower frame member 7 are arranged so as to be flush with each other. More specifically, the main surface of the light diffusing plate 3 facing the front side is flush with the surface of the upper frame member 6 and the lower frame member 7 facing the front side (that is, the outer surface of the front side wall portion 6b). positioned. In this case, the fact that they are located on the same plane does not mean that the surfaces are completely at the same level, and it is allowed that there is a step that does not hinder the installation of the decorative sheet 8 described later. For example, the step between the main surface of the light diffusing plate 3 facing the front side and the surface of the upper frame member 6 and the lower frame member 7 facing the front side may be 1 mm or less, preferably 0.5 mm or less. It may be.

On the other hand, the light reflector 4 is in a state where its upper end is in contact with the second contact portion 6e of the upper frame member 6 and its lower end is in contact with the second contact portion 6e of the lower frame member 7. The upper frame member 6 and the lower frame member 7 are fixed to the second fitting portion 6g via a plurality of set screws 9. In the present embodiment, the light reflector 4 also plays a role of reinforcing these frame members while connecting the upper frame member 6 and the lower frame member 7 arranged apart from each other.

On the back side of the light emitting panel 1, the light reflecting plate 4, the upper frame member 6, and the lower frame member 7 are arranged so as to be flush with each other. More specifically, the main surface facing the back side of the light reflector 4 is flush with the surface facing the back side of the upper frame member 6 and the lower frame member 7 (that is, the outer surface of the back side wall portion 6c). positioned. In this case, being located on the same plane does not mean that the surfaces are completely at the same level, and it is allowed that there is a step that does not hinder the installation of the light emitting panel 1 on the wall. For example, the step between the main surface of the light reflector 4 facing the front side and the surface of the upper frame member 6 and the lower frame member 7 facing the front side may be 3 mm or less, preferably 1 mm or less. It may be more preferably 0.5 mm or less.

The light guide plate 5 located between the light diffusing plate 3 and the light reflecting plate 4 is sandwiched between the first fitting portion 6f and the second fitting portion 6g of the upper frame member 6 and the lower frame member 7. It is fixed by a set screw 9 penetrating the fitting portion 6f and a set screw 9 penetrating the second fitting portion 6g.

On the other hand, the light source unit 2 housed in the space S has a first contact portion 6d and a first contact portion 6d so that the wiring board 22 bridges the first fitting portion 6f and the second fitting portion 6g of the upper frame member 6. 2 It is supported by the contact portion 6e. Then, the point-shaped light emitting element 21 is arranged between the first fitting portion 6f and the second fitting portion 6g, and irradiates the light guide plate 5 located immediately below the first fitting portion 6f with light. FIG. 1 shows an example in which the side end faces of the light source unit 2 and the light guide plate 5 face each other, but the present invention is not limited to this, and light such as a lens or a prism is transmitted between the light source unit 2 and the light guide plate 5. By arranging the deflecting optical element, the light source unit 2 and the light guide plate 5 may be configured not to face each other.

Further, on the front side of the light emitting panel 1, a decorative sheet 8 for covering the light diffusing plate 3, the upper frame member 6, and the lower frame member 7 is provided. As shown in FIG. 1, the decorative sheet 8 extends from the outer surface of the front side wall portion 6b of the upper frame member 6 to the main surface facing the front side of the light diffusing plate 3, and further, the front side wall portion 6b of the lower frame member 7. It is pasted on the entire surface up to the outer surface of.

The decorative sheet 8 exerts a design effect and may or may not have light transmission. Then, in order to obtain a sense of unity with the surroundings, it is preferable that the decorative sheet 8 has the same design as the wallpaper of the wall W. Here, having the same design means that the materials may be different as long as they have the same pattern and color. As the decorative sheet 8, a paper-based decorative sheet, a resin-based decorative sheet (for example, a marble-like sheet, a wood grain-like decorative sheet, a mirror-like decorative sheet) or the like can be used.

According to the light emitting panel 1 configured as described above, the light diffusing plate 3, the upper frame member 6, and the lower frame member 7 are arranged so as to be flush with each other on the front side, as in the conventional case. There is no feeling of protrusion due to the protrusion of the frame member, and even if the decorative sheet 8 is not provided, a sense of unity of the entire light emitting panel 1 can be achieved. Further, since the set screw 9 used for fixing the light diffusing plate 3 can screw the entire screw into the inside of the light diffusing plate 3, the screwed portion is not conspicuous and the light diffusing plate 3 There is little effect on the appearance.

Further, since the light guide plate 5 is fixed by the set screw 9 penetrating the first fitting portion 6f on the front side and the set screw 9 penetrating the second fitting portion 6g on the back side, the light guide plate 5 can be easily positioned. Further, since the light diffusing plate 3, the upper frame member 6, and the decorative sheet 8 covering the lower frame member 7 are provided on the front side of the light emitting panel 1, the overall sense of unity can be further enhanced.

Further, in the vertical direction, the fitting length of the first fitting portion 6f of the upper frame member 6 and the lower frame member 7 is shorter than the fitting length of the second fitting portion 6g, so that the upper frame member 6 and the lower frame member 7 The area of the light emitting surface 5c of the light guide plate 5 can be secured as large as possible while maintaining the effect of reinforcing the above.

The fitting length of the first fitting portion 6f is preferably set in consideration of the following. That is, if the fitting length of the first fitting portion 6f is too large, the area of the light emitting surface 5c becomes small. On the other hand, if the fitting length is too small, the point-shaped light emitting element 21 can be directly viewed, and it becomes difficult to secure a place for fixing with the set screw 9. Therefore, it is preferable to set the fitting length of the first fitting portion 6f in consideration of the fact that the point-shaped light emitting element 21 cannot be directly viewed and a large area of the light emitting surface 5c can be secured.

Further, as described above, since the light reflecting plate 4 also plays a role of reinforcing the upper frame member 6 and the lower frame member 7, it is preferable that the thickness thereof is the light diffusing plate 3 or more. In other words, the second abutting portion 6e that abuts the upper end portion of the light reflecting plate 4 in the upper frame member 6 and the lower frame member 7 has a length in the horizontal direction that is equal to that of the upper end portion of the light diffusing plate 3. Same as or larger than the first contact portion 6d to be abutted.

Various modifications can be considered for the light emitting panel 1 according to the present embodiment.
For example, as shown in FIG. 3, the decorative sheet 8 may be bent and extended to the back side so as to cover the ceiling surface of the upper frame member 6 and the bottom surface of the lower frame member 7. That is, the decorative sheet 8 includes a first portion 8a that covers the outer surface of the front side wall portion 6b and the main surface facing the front side of the light diffusing plate 3, and a second portion 8b that covers the main body portion 6a of the upper frame member 6. It is configured to have a third portion 8c that covers the main body portion 6a of the lower frame member 7. By doing so, even if the main body portion 6a of the upper frame member 6 and the lower frame member 7 is conspicuous, it is hidden by the second portion 8b and the third portion 8c of the decorative sheet 8, so that it is unified with the surroundings. You can feel it.

Further, as shown in FIG. 4, the light source portion 2 may be attached to the lower surface of the main portion 6a of the upper frame member 6 with an adhesive or the like.

Further, regarding the structures of the upper frame member and the lower frame member, in addition to the contents described above, various modifications can be considered. For example, in the upper frame member 6A shown in FIG. 5A, the fitting length of the first fitting portion 6f is the same as the fitting length of the second fitting portion 6g.

Further, in the upper frame member 6B shown in FIG. 5B, the first fitting portion 6f and the second fitting portion 6g extend in the vertical direction, respectively, and the second contact portion 6e with the second fitting portion 6g. It is formed diagonally with respect to the second fitting portion 6g so that the forming angle α becomes an obtuse angle. Similarly, the first contact portion 6d is also formed obliquely with respect to the first fitting portion 6f so that the angle formed with the first fitting portion 6f is an obtuse angle.

On the other hand, in the upper frame member 6C shown in FIG. 5C, the first fitting portion 6f and the second fitting portion 6g extend in the vertical direction, respectively, and the second contact portion 6e with the second fitting portion 6g. It is formed obliquely with respect to the second fitting portion 6g so that the forming angle α becomes an acute angle. Similarly, the first contact portion 6d is also formed obliquely with respect to the first fitting portion 6f so that the angle formed with the first fitting portion 6f is an acute angle.

Further, in the upper frame member 6D shown in FIG. 6A, the front side wall portion 6b and the back side wall portion 6c are not provided, and the first contact portion 6d and the second contact portion 6e are with the main body portion 6a. It is thickly formed so as to be directly connected. In such a case, the light source portion 2 may be attached to the lower surface of the main body portion 6a with an adhesive or the like.

Further, in the upper frame member 6E shown in FIG. 6B, between the first fitting portion 6f and the second fitting portion 6g, a first protruding portion 6h protruding from the first contact portion 6d to the back side and a first protruding portion 6h. A second protruding portion 6i protruding from the second contact portion 6e on the front side is provided. The distance between the first protruding portion 6h and the second protruding portion 6i is larger than the width of the point-shaped light emitting element 21. By doing so, the area supporting the wiring board 22 of the light source unit 2 becomes large, and the point-shaped light emitting element 21 is arranged between the first projecting portion 6h and the second projecting portion 6i. Positioning of the light emitting element 21 can be easily performed.

Further, in the upper frame member 6F shown in FIG. 7A, an opening 6j is provided in the front side wall portion 6b. The size of the opening 6j is set so that the light source unit 2 can be smoothly inserted and removed. In this way, the insertion work and the removal work of the light source unit 2 can be easily performed through the opening 6j.

Further, in the upper frame member 6G shown in FIG. 7B, an opening 6k is provided in the back side wall portion 6c in addition to the opening portion 6j provided in the front side wall portion 6b. In this way, the wiring cable of the light source unit 2 and the like can be easily taken out to the outside.

Further, in the upper frame member 6H shown in FIG. 8A, the first fitting portion 6f is provided with a first protruding portion 6m projecting to the back side. Correspondingly, the second fitting portion 6g is provided with a second protruding portion 6n that protrudes to the front side. In such a case, the first protruding portion 6m is engaged with the groove portion 5e formed on the light emitting surface 5c side of the light guide plate 5, and the second protruding portion 6n is engaged with the groove portion 5f formed on the back surface 5d side. The light guide plate 5 can be easily fixed without using the set screw 9.

Further, in the upper frame member 6J shown in FIG. 8B, an opening 6p is provided in the main body portion 6a. One large opening may be formed, or a plurality of small openings may be formed. In this way, the effect of escaping the heat generated by the light source unit 2 is achieved.

<Second Embodiment>
FIG. 9 is a cross-sectional view showing the panel of the second embodiment. The light emitting panel 1A of the present embodiment is different from the first embodiment in a structure having a direct type surface light source device. Since other configurations are the same as those in the first embodiment, duplicate description will be omitted.

Specifically, on the back side of the light diffusing plate 3, a substrate 11 on which a plurality of point-shaped light emitting elements 10 are arranged is arranged. The substrate 11 corresponds to the "second plate-shaped member" described in the claims. Although not shown, the substrate 11 may be, for example, a plate obtained by laminating a wiring board on which a point-shaped light emitting element 10 is mounted and an insulating substrate made of a hard resin, or a plate on which the point-shaped light emitting element 10 is mounted. It may be a plate formed by laminating a wiring board and an aluminum plate with an insulating layer interposed therebetween. The substrate 11 is fixed to the upper frame member 6 and the second fitting portion 6g of the lower frame member 7 by adhesion or screwing, respectively. The plurality of point-shaped light emitting elements 10 are regularly arranged over the entire surface of the main surface of the substrate 11, and directly irradiate the light diffusing plate 3 with light.

According to the light emitting panel 1A of the present embodiment, the same effects as those of the first embodiment can be obtained. Further, in the present embodiment, the light reflector 4 may be further provided as in the first embodiment described above (see FIG. 10). By doing so, it is possible to reflect the light incident from the point-shaped light emitting element 10 and further enhance the effect of reinforcing the upper frame member 6 and the lower frame member 7.

Hereinafter, a construction example of the light emitting panel of the present disclosure will be described with reference to FIGS. 11 and 12.
As described above, the light emitting panel 1 can be attached to the wall W, the ceiling C, and the floor F of the room, but in this construction example, an example of being attached to the wall W will be described. More specifically, the light emitting panel 1 is fixed to the wall W near the ceiling C, and the non-light emitting panel 12 is attached to the wall W below the wall W.

The non-light emitting panel 12 has a thin plate-shaped board 13 and a decorative sheet 14 attached to the board 13. The board 13 is arranged below the light emitting panel 1 so as to form a gap with the light emitting panel 1, and extends to a position away from the floor F (that is, a position higher than the floor F). As the board 13, a resin plate, a wooden plate, a plate made of a cement-based material such as concrete or mortar, a gypsum board, an inorganic non-metal plate made of calcium silicate or the like, a metal plate made of aluminum or the like can be used. .. Further, the board 13 preferably has flame resistance and fire resistance.

The decorative sheet 14 is attached to the main surface of the board 13 facing the front side. The decorative sheet 14 may have the same material, color, and pattern as the decorative sheet 8 of the light emitting panel 1, or may be different, but it is preferable that the decorative sheet 14 is the same as the decorative sheet 8 in order to achieve a sense of unity as a whole. Further, in the vertical direction, it is preferable that the decorative sheet 8 of the light emitting panel 1 and the decorative sheet 14 of the non-light emitting panel 12 are flush with each other.

Hereinafter, the third to tenth embodiments will be described. The features shown in the first to tenth embodiments can be used in any combination, if possible.

<Third Embodiment>
FIG. 13 is a cross-sectional view showing the panel of the third embodiment. As shown in FIG. 13, at least a light guide plate 5 and a light reflecting plate 4 are arranged between the first fitting portion 6f and the second fitting portion 6g of the upper frame member 6. The lower frame member 7 may have the same arrangement. Further, instead of the light reflector of FIG. 1, a reinforcing member 19 may be arranged on the wall W side. In the third embodiment, it may be a laminated body in which the facing surfaces of the light guide plate 5 and the light reflecting plate 4 are in contact with each other and integrated.

Note that FIG. 13 shows an example in which the light guide plate 5 and the light reflector 4 are fixed apart from the fitting portion by screws 9 at at least one of the upper frame member 6 and the lower frame member 7. However, at least one of the upper frame member 6 and the lower frame member 7 may be sandwiched and fixed by the facing fitting portions.

<Fourth Embodiment>
FIG. 14 is a cross-sectional view showing the panel of the fourth embodiment. As shown in FIG. 14, the back side of the upper frame member 6 extends vertically from above. For example, the back side of the upper frame member 6 is not provided with the second fitting portion 6g as shown in FIG. 13, and only the back side wall portion 6c extends downward. A light guide plate 5 and a light reflecting plate 4 are arranged between the back side wall portion 6c and the first fitting portion 6f. The lower frame member 7 may have the same configuration.

In the configuration shown in FIG. 14, the accommodating portion for accommodating the light diffusing plate 3 in the space defined by the first contact portion 6d and the first fitting portion 6f of the upper frame member 6 and the lower frame member 7, respectively. It is formed.

In the present embodiment, the back side wall portion 6c of the panel 1 can be fixed to the wall portion W in a wide area.

<Fifth Embodiment>
FIG. 15 is a cross-sectional view showing the panel of the fifth embodiment. As shown in FIG. 15, the upper frame member 6 has the same configuration as that of FIG. That is, the second fitting portion 6g is longer than the first fitting portion 6f. With this configuration, it is possible to achieve both reduction of glare due to direct light and large area of the light emitting surface.

On the other hand, regarding the lower frame member 7, the first fitting portion 6f and the second fitting portion 6g may have the same length, and as shown in FIG. 15, the first fitting portion 6f is more than the second fitting portion 6g. May be longer. The lengths of the first fitting portion 6f and the second fitting portion 6g of the lower frame member 7 may be larger than the lengths of the first fitting portion 6f and the second fitting portion 6g of the upper frame member 6. According to such a configuration, the lower frame member 7 can stably support the first to third plate-like bodies, and the fitting length of the upper frame member 6 can be reduced. Therefore, the upper region that emits bright light can be enlarged.

<Sixth Embodiment>
FIG. 16 is a cross-sectional view showing the panel of the sixth embodiment. As shown in FIG. 16, at least one of the upper frame member 6 and the lower frame member 7 is not in contact with the wall W, and is fixed away from the wall surface of the wall W by, for example, a fixing member 6q or the like. Is also good.

<7th Embodiment>
FIG. 17 is a cross-sectional view showing the panel of the seventh embodiment. As shown in FIG. 17, the decorative sheet 8 does not have to cover the upper surface portion of the upper frame member 6. FIG. 17 typically assumes that the light emitting panel 1 is arranged on the ceiling side. In this case, the lower end of the lower frame member 7 is in the user's field of view, while the upper end of the upper frame member 6 is hard to be in the user's field of view. The upper surface portion of the upper frame member 6 on the light source side is not covered with the decorative sheet 8, but the bottom surface portion of the lower frame member 7 on the non-light source side may be covered with the decorative sheet 8.

<8th Embodiment>
FIG. 18 is a cross-sectional view showing the panel of the eighth embodiment. As shown in FIG. 18, the upper frame member 6 and the lower frame member 7 may be vertically asymmetrical. Since the upper frame member 6 needs to accommodate and fix the wiring board 22 provided with the point-shaped light emitting element 21, it has the same configuration as that of FIG. 1, but the lower frame member 7 has a light source portion and the like. Since it is not necessary to accommodate it, it is sufficient to have at least a bottom plate. If necessary, a partition portion, a light reflector support portion, or the like may be provided as desired.

Further, in FIG. 18, as an example in which the upper frame member 6 and the lower frame member 7 are vertically asymmetrical, the thickness of the lower frame member 7 is made smaller than the thickness of the upper frame member 6 to form a dot shape. The thickness of the light emitting portion of the light emitting panel 1 can be reduced by, for example, reducing the thickness of the light diffusing plate 3 while securing a space for accommodating the wiring board 22 provided with the light emitting element 21. Although FIG. 18 shows an example in which the thickness of the light diffusing plate 3 is made thinner than that of FIG. 1, the thickness of the light guide plate 5 and the light reflecting plate 4 is reduced so that the thickness of the panel is reduced. You may.

<9th embodiment>
FIG. 19 is a cross-sectional view showing the panel of the ninth embodiment. While having the first frame member, it may not have the second frame member, and as shown in FIG. 19, for example, the lower frame member may not be provided. In that case, for example, a fixing member 6r such as a screw for fixing the light diffusing plate 3, the light guide plate 5, the light reflecting plate 4 or the like to the wall W by screwing the set screw 9 may be provided below the panel 1. Alternatively, instead of the fixing member 6r such as a screw, an adhesive member that fixes the diffusion plate 3 and the light guide plate 5 and the light guide plate 5 and the reflector 4 with an adhesive force may be used.

<10th Embodiment>
FIG. 20 is a cross-sectional view showing the panel of the tenth embodiment. As shown in FIG. 20, the light diffusing plate 3 which is the first plate-shaped member and at least the front side (light emitting surface side) of the upper frame member 6 do not have to be flush with each other. In the example shown in FIG. 20, a spacer member 23 is provided between the light diffusing plate 3 and the decorative sheet 8. The position on the front side of the spacer member 23 may be substantially flush with the position on the front side of the upper frame member 6. The spacer member 23 preferably has translucency. According to such a configuration, it is possible to suppress the amount of light from the light emitting surface from being reduced by the spacer member 23. When the spacer member 23 has poor translucency and is, for example, non-transmissive, a plurality of spacer members 23 can be provided at positions that do not interfere with light emission, for example, at a peripheral portion of a light emitting surface.

Although the embodiments of the present disclosure have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs are designed without departing from the spirit of the present invention described in the claims. You can make changes. For example, the present invention also applies to the combinations of the above-described embodiments and modifications. Further, the upper frame member and the lower frame member can also be used as a frame for a photo frame, a window, a door, or the like.

1,1A Light emitting panel 2 Light source 3 Light diffuser 4 Light reflector 5 Light reflector 5a Light input surface 5b Opposing surface 5c Light emitting surface 5d Back surface 6, 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6J Upper frame member 6a Main part 6b Front side wall part 6c Back side wall part 6d First contact part 6e Second contact part 6f First fitting part 6g Second fitting part 7, 7A, 7B, 7C, 7D, 7E, 7F, 7G, 7H, 7J Lower frame member 8,14 Decorative sheet 9 Set screw 10,21 Point-shaped light emitting element 11 Board 12 Non-light emitting panel 13 Board 22 Wiring board G1, G2 Gap S Space W Wall

Claims (8)

A first plate-shaped member made of a light diffusing plate and a second plate-shaped member made of a light guide plate arranged from the front side to the back side along the uniaxial direction, and
A frame member provided apart from the direction intersecting the uniaxial direction, sandwiching the first plate-shaped member and supporting the second plate-shaped member, and
A light source portion arranged at the side end portion of the second plate-shaped member and supported by the frame member, and a light source portion.
With
The frame member includes a first contact portion that contacts the side end portion of the first plate-shaped member, a first contact portion, and the first plate-shaped member and the second plate-shaped member that are connected to the first contact portion. has a first fitting portion from fitting entrance to the front and has a fitting length that the light source unit can not direct view between the at least,
A panel characterized in that the first plate-shaped member and the frame member are flush with each other on the front side. The panel according to claim 1, wherein a decorative sheet for covering the first plate-shaped member and the frame member is provided on the front side. A third plate-shaped member arranged on the back side of the second plate-shaped member is further provided.
The frame member includes a second contact portion that contacts the side end portion of the third plate-shaped member, a second contact portion that is connected to the second contact portion, and the second plate-shaped member and the third plate-shaped member. The panel according to claim 1 or 2, further comprising a second fitting portion fitted between the two fitting portions to a predetermined length. The panel according to claim 3, wherein the third plate-shaped member and the frame member are flush with each other on the back side. The panel according to claim 3 or 4, wherein the fitting length of the first fitting portion is shorter than the fitting length of the second fitting portion in a direction intersecting the uniaxial direction. The frame member extends from the first contact portion to the side opposite to the first fitting portion and from the second contact portion to the side opposite to the second fitting portion. Further having a back side wall portion, and a main body portion connecting the front side wall portion and the back side wall portion.
The panel according to any one of claims 3 to 5, wherein the front side wall portion and the first plate-shaped member are flush with each other on the front side. The light source unit may have a wiring board on which a plurality of point-like light emitting device with these point-like light-emitting elements are mounted,
The panel according to claim 6, wherein the light source portion is housed in a space formed by the main body portion, the front side wall portion, the back side wall portion, the first contact portion, and the second contact portion. Panel according to prior SL any one of claims 3-7 third plate member is a light reflecting plate.

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