Light guide plate type hall lanthanum

Abstract

To provide a thin type hall lanthanum which can be installed on a three-way frame and enables not only a person near a doorway of an elevator but also a person away from an elevator hall to confirm a lighting state and with which, when performing installation work, the work can be performed from the side of the hall.SOLUTION: A light guide plate type hall lanthanum comprises: an illumination cover 10 which consists of a resin composition having light diffusivity and of which at least two faces of a front face 11 and an adjacent side face 12 become illumination faces; a light guide plate 20 which is provided in a back face 13 of the illumination cover 10, in which one end 23 facing an illumination face Y of the side face 12 of the illumination cover 10 is an inclined face 24 and light guide printing for light guide is applied to the back face 22; and a light-emitting diode 30 disposed on the other end face 25 of the light guide plate 20. The light guide printing on the back face 22 of the light guide plate 20 is applied in such a manner that a light guide density becomes higher successively as it is separated from the light-emitting diode 30, and an angle formed by the one end face 23 of the light guide plate 20 with the illumination cover 10 ranges from 15 degrees to 75 degrees.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a light guide plate type hall lantern that can be installed on the corners of elevator landing jambs, pillars, etc. [Background technology]

[0002] On the wall of the elevator hall where the elevators operate, display devices called hall lanterns 101 as shown in Fig. 5 are installed on the upper wall 104 of the entrances and exits 103 of each elevator 102. When a hall button 106 installed on a side wall 105 is pressed, one of the hall lanterns 101 installed on each elevator 102 lights up or flashes (hereinafter simply referred to as "lighting up") to indicate which elevator 102 is coming first and to notify that the elevator 102 has arrived, and it is necessary to make everyone in the elevator hall 107 aware that the lantern is on. For this reason, when the hall lantern 101 is on, the part 109 protruding from the wall of the hall lantern 101 changes color to the color of the light source so that not only people in front of it but also people on the sides can see that the lantern is on.

[0003] As shown in Fig. 6, this type of hall lantern 101 has a structure in which a light-emitting diode (hereinafter referred to as "LED") 115 is disposed as a light source on the bottom surface 114 of a case 113 fitted into a mounting hole 112 opened in a wall surface 111, and an illumination cover 108 made of a protruding resin is used to cover the case 113. This ensures a predetermined distance between the illumination cover 108 and the LED 115, and the entire illumination cover 108 changes color to the color of the LED 115. However, since the LED 115 has high directivity and irradiates light forward, a person looking from the front can see that the illumination cover 108 has changed color due to the LED 115 and can confirm that the hall lantern 101 is on, but a person looking from the side cannot easily see the change in color of the part 109 of the illumination cover 108 protruding from the wall surface, making it difficult to confirm that the hall lantern 101 is on.

[0004] Furthermore, the hall lanterns 101 are installed on the upper wall 104 of the entrances 103 of each elevator 102, which is considerably higher than eye level, making it difficult for short people or children to see that the hall lanterns 101 are lit. Also, if they are installed in the center of the side wall, which is a low position, it becomes difficult to tell whether the sign refers to the left or right elevator 102. For this reason, there has been a demand for hall lanterns 101 that can be installed on the jambs 110 on the sides of the entrances 103 of each elevator 102.

[0005] In addition, conventional hall lanterns 101 are large because a certain distance must be ensured between the illumination cover 108 and the LED 115, and when installing or maintaining the hall lantern 101 (hereinafter referred to as "installation"), the work must be done from the elevator shaft side, which makes the work complicated and increases construction costs, so there has been a demand for a thin hall lantern 101 that can be installed from the hall 107 side.

[0006] Furthermore, since the LEDs 115 are separated from the illumination cover 108, the back of the illumination cover 108 becomes hollow, causing uneven lighting when the LEDs are not lit. In addition, since the LEDs 115 are highly directional and radiate light forward, simply separating the LEDs 115 from the illumination cover 108 limits the ability to correct uneven lighting when the LEDs are lit. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2004-182468 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a hall lantern that can be installed on three sides of the jamb so that it is at a height that can be easily seen by short people and children, and whose lit state can be seen not only by people near the elevator entrance / exit, but also by people over a wide area, such as those away from the elevator hall.

[0009] Furthermore, an object of the present invention is to provide a thin hall lantern that can be installed from the hall side.

[0010] Furthermore, an object of the present invention is to provide a hall lantern which eliminates uneven lighting when lit and unlit and allows the lit state to be easily confirmed. [Means for solving the problem]

[0011] In order to achieve the above-mentioned object, the light-guiding plate type hall lantern of claim 1 of the present invention is a light-guiding plate type hall lantern that can be installed on the corners of the frames or pillars of an elevator landing, and is characterized in that it comprises: an illumination cover made of a resin composition having light-diffusing properties, at least two surfaces, the front and side, being illumination surfaces; a light-guiding plate that is disposed within the concave back surface of the illumination cover, one end surface facing the illumination surface of the side surface of the illumination cover being a slope, and the back surface being coated with light-guiding printing for guiding light; and a light-emitting diode disposed on the other end surface side opposite the one end surface of the light-guiding plate, the light-guiding printing being printed so that the light-guiding density increases successively the further away from the light-emitting diode.

[0012] In addition, the light guide plate type hall lantern of claim 2 of the present invention is characterized in that, in the light guide plate type hall lantern described in claim 1, the angle that the one end face of the light guide plate makes with the illumination cover in the horizontal cross-sectional shape is in the range of 15 degrees to 75 degrees.

[0013] The light-guiding plate type hall lantern according to claim 3 of the present invention is a light-guiding plate type hall lantern that can be installed on the corners of the frames or pillars of an elevator landing, and is characterized in that it comprises: an illumination cover made of a resin composition having light diffusing properties, and having three surfaces, namely the front surface, side surface, and convex rear surface, as illumination surfaces; a light-guiding plate that is disposed within the concave rear surface of the illumination cover, and has one end surface facing the illumination surface of the side surface of the illumination cover which is a semicircular end surface or a roof-shaped end surface, and has light-guiding printing applied to the rear surface for guiding light; and a light-emitting diode that is disposed on the other end surface side of the light-guiding plate that is located opposite to the one end surface, and the light-guiding printing is printed so that the light-guiding density increases successively the further away from the light-emitting diode.

[0014] Furthermore, the light guide plate type hall lantern according to claim 4 of the present invention is a light guide plate type hall lantern according to any one of claims 1 to 3, characterized in that the surface of one end face of the light guide plate is painted white. Effect of the Invention

[0015] The present invention provides the following advantages.

[0016] That is, the light guide plate type hall lantern of the present invention having the above-mentioned configuration has a light guide plate built into the concave back surface of the illumination cover and one end surface of the light guide plate is made into a slope, so that the illumination cover has two surfaces, the front surface and the side surface facing the slope of the light guide plate, which makes it possible to install it on the corners of the three-sided frame or pillars of an elevator hall. Therefore, it can be installed at a height where short people and children can easily see it.

[0017] Furthermore, since the light guide plate type hall lantern has two illumination surfaces, the front and the side, the lighting condition can be seen by people over a wide area, including those far from the elevator hall, as well as people near the elevator entrance.

[0018] In addition, the light guide plate type hall lantern has a light guide plate built into the concave back surface of the light-emitting cover, so there is no unevenness in the light when it is not lit, and the light guide printing on the back surface of the light guide plate is printed so that the light guide density increases the further away from the light-emitting diode, so that the surface of the light-emitting cover can be illuminated evenly and without unevenness when it is lit, and by making one end surface of the light guide plate a slope, the side surface of the opposing light-emitting cover can be illuminated evenly and without unevenness. Therefore, unevenness in the light when it is lit and when it is not lit can be eliminated, making it easy to check that it is lit.

[0019] In addition, since the light guide plate is installed inside the concave back surface of the illumination cover, the light guide plate type hall lantern can be made thin. Therefore, the light guide plate type hall lantern can be installed from the hall side, making the installation work easier and reducing construction costs.

[0020] Furthermore, if one end face of the light guide plate is shaped as a semicircular end face or a roof-shaped end face, the light rays from the LEDs can be refracted and irradiated toward the surface of the illumination cover by the light guide print printed on the back face of the light guide plate, and the refracted light rays can be further refracted by the semicircular end face or roof-shaped end face formed on one end face of the light guide plate and irradiated toward the side face and convex back face of the illumination cover. Therefore, the illumination cover can have the convex back face as an illumination surface in addition to the front and side faces.

[0021] In addition, if a white coating is applied to the surface of one end face of the light guide plate, the white coating has light-blocking properties, making it possible to adjust the amount of irradiation onto the side faces and convex rear face of the illuminated cover, thereby preventing uneven light from occurring on the side faces and convex rear face. [Brief description of the drawings]

[0022] [Figure 1] 1 is a perspective view of a light guide plate type hall lantern according to the present invention; FIG. [Diagram 2] 2 is a cross-sectional explanatory diagram of the light guide plate type hall lantern of FIG. 1 cut in the horizontal direction. FIG. [Diagram 3] FIG. 3 is an enlarged cross-sectional explanatory view of a portion circled in FIG. 2. [Figure 4] 4 is an enlarged cross-sectional explanatory view of one end face of the light guide plate in FIG. 3, the end face having a different shape. [Diagram 5] FIG. 1 is an explanatory diagram showing the installation state of a conventional hall lantern. [Figure 6] FIG. 1 is a cross-sectional view of a conventional hall lantern. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings.

[0024] FIG. 1 is a perspective view of a light guide plate type hall lantern according to the present invention, FIG. 2 is a cross-sectional explanatory diagram of the light guide plate type hall lantern of FIG. 1 cut horizontally at position AA and viewed in the direction of the arrow, FIG. 3 is an enlarged cross-sectional explanatory diagram of a portion B circled in FIG. 2, and FIG. 4 is an enlarged cross-sectional explanatory diagram when one end face of the light guide plate in FIG. 3 is an end face with a different shape.

[0025] As shown in Figures 1 and 2, the light guide plate type hall lantern 1 of the present invention comprises an illumination cover 10, a light guide plate 20, and a light emitting diode (LED) 30, and is disposed within a space surrounded by a bent plate 40, a sandwiching plate 41, and an upper plate 42.

[0026] The light-illuminating cover 10 has three light-illuminating surfaces: the light-illuminating surface X of the front surface 11, the light-illuminating surface Y of the side surface 12 adjacent to the front surface 11, and the light-illuminating surface Z of the convex back surface 14 located on the opposite side of the front surface 11 and adjacent to the side surface 12. The concave back surface 13 constitutes the back surface together with the convex back surface 14 configured in a stepped manner, and the back surface is integrally molded with the front surface 11 and the side surface 12. A partition plate 43 for the purpose of blocking light is sandwiched in the vertical center, and the upper light-illuminating cover 10A and the lower light-illuminating cover 10B are joined together. As the material for the light-illuminating cover 10, a milky acrylic resin having light-diffusing properties is preferably used. As the milky acrylic resin, a commercially available one can be used, for example, CLAREX Diffusion Light-Guiding Acrylic (DR-4) by Nitto Resin Industrial Co., Ltd. In addition, when the partition plate 43 is not inserted, a light-shielding paint may be applied to the joint interface between the upper illumination cover 10A and the lower illumination cover 10B, and the two (10A, 10B) may be directly joined together.

[0027] The light guide plate 20 is disposed inside the concave back surface 13 of the illumination cover 10 and is molded from a transparent acrylic plate 21. The back surface 22 of the light guide plate 20 is printed with light guide ink made of a material with high light reflectance. The light guide print is printed so that the light guide density increases in the direction away from the LED 30 described below. The shape of the light guide print may be any shape, such as a dot shape, a star shape, or a square shape.

[0028] One end surface 23 of the light guide plate 20 facing the side surface 12 of the light-illuminating cover 10 is an inclined surface 24, and as shown in Fig. 3, the angle α between the light-illuminating cover 10 and the inclined surface 24, which is one end surface 23 of the light guide plate 20, in the horizontal cross-sectional shape is preferably in the range of 15 degrees to 75 degrees, and more preferably in the range of 30 degrees to 60 degrees. If the angle α is 15 degrees or less, the part of the side surface 12 of the light-illuminating cover 10 corresponding to the inclined surface 24 of the light guide plate 20 becomes brighter than the other parts of the side surface 12 of the light-illuminating cover 10, causing stripes on the side surface 12 of the light-illuminating cover 10 and resulting in light unevenness, and if the angle α is 75 degrees or more, the part of the surface 11 of the light-illuminating cover 10 corresponding to the inclined surface 24 of the light guide plate 20 becomes brighter than the other parts of the surface 11 of the light-illuminating cover 10, causing stripes on the surface 11 of the light-illuminating cover 10 and resulting in light unevenness.

[0029] The LEDs 30 serving as light sources are arranged in a row on the substrate and disposed on one end face 23 of the light guide plate 20 and the other end face 25 opposite thereto. The LEDs 30 may be disposed inside a cut-out portion of the light guide plate 20.

[0030] The bent plate 40 is L-shaped and is fixed to the wall of the mounting hole with anchor bolts 44 on the outside of the back surface. The above-mentioned illumination cover 10, light guide plate 20, LEDs 30, and a wiring board (not shown) are arranged on the inside, and a clamping plate 41 is arranged to cover these, with an upper plate 42 placed on top.

[0031] Although the shape of one end face 23 of light guide plate 20 is inclined face 24, the shape of one end face 23 may be semicircular end face 26 having a semicircular horizontal cross-sectional shape as shown in FIG. 4(1), or roof-shaped end face 27 having a roof-shaped horizontal cross-sectional shape as shown in FIG. 4(2).

[0032] Furthermore, regardless of whether the one end face 23 of the light guide plate 20 is the inclined face 24, the semicircular end face 26, or the roof-like end face 27, a white paint having light-shielding properties may be applied to the surface of the one end face 23. In this case, the white paint may be applied after a sandblasting treatment in advance to improve the adhesion of the paint.

[0033] With the above-mentioned configuration, the light guide plate type hall lantern 1 of the present invention has a light guide plate 20 installed inside the concave back surface 13 of the light-illuminating cover 10, and one end surface 23 of the light guide plate 20 is made into a slope 24, so that the light rays from the LEDs 30 are refracted toward the surface 11 of the light-illuminating cover 10 by the light-guiding printing printed on the back surface 22 of the light guide plate 20 and irradiated, and at the same time, the refracted light rays are further refracted by the slope 24 formed on one end surface 23 of the light guide plate 20 and irradiated toward the side surface 12 of the light-illuminating cover 10. Therefore, the illuminated cover 10 can have two illuminated surfaces: the illuminated surface X on the front surface 11 and the illuminated surface Y on the side surface 12 opposite the inclined surface 24, which is one end surface 23 of the light guide plate 20. This allows the cover to be installed on the corners of the frames or pillars of an elevator landing, and can be installed at a height that allows it to be easily seen by short people, children, etc.

[0034] Furthermore, the illuminated surface of the illuminated cover 10 is two surfaces, the illuminated surface X on the front surface 11 and the illuminated surface Y on the adjacent side surface 12, so that the lighting status can be easily confirmed not only by people near the elevator entrance, but also by people over a wide range, including those away from the elevator hall or on the side away from the elevator hall.

[0035] In addition, the light-guiding printing on the back surface 22 of the light-guiding plate 20 is printed so that the light-guiding density increases with increasing distance from the LED 30, so that it is possible to eliminate uneven light on the surface 11 of the light-illuminating cover 10 and create a uniformly illuminated surface X. Furthermore, when one end surface 23 of light guide plate 20 is made to be an inclined surface 24, the angle α between light-illuminating cover 10 and one end surface 23 of light guide plate 20 in the horizontal cross-sectional shape as shown in FIG. 3 is set in the range of 15 degrees to 75 degrees, and more preferably in the range of 30 degrees to 60 degrees, thereby making it possible to eliminate light unevenness on front surface 11 and side surface 12 of light-illuminating cover 10 and to achieve uniform illuminated surfaces X and Y. Therefore, it is possible to eliminate unevenness in the light when the lamp is turned on, and it is possible to easily check the lighting state.

[0036] Furthermore, since the light guide plate 20 is provided inside the concave rear surface 13 of the light-illuminating cover 10, there is no gap between the surface 11 of the light-illuminating cover 10 and the light guide plate 20, which makes it possible to eliminate uneven light on the surface 11 when the light is not lit, and makes it possible to clearly distinguish between when the light is lit and when it is not lit.

[0037] In addition, the light guide plate 20 is provided inside the concave back surface 13 of the illumination cover 10 and disposed inside the bent plate 40, making it possible to make the light guide plate type hall lantern 1 thin. Therefore, when installing the light guide plate type hall lantern 1 in the mounting hole of the three-sided frame, it is possible to work from the hall side, making the work easier and reducing construction costs.

[0038] By forming one end surface 23 of the light guide plate 20 into a semicircular end surface 26 or a roof-shaped end surface 27, the light rays from the LED 30 are refracted and irradiated toward the surface 11 of the light-illuminating cover 10 by the light-guiding printing printed on the back surface 22 of the light guide plate 20, and at the same time, the refracted light rays are further refracted by the semicircular end surface 26 or roof-shaped end surface 27 formed on one end surface 23 of the light guide plate 20 and irradiated toward the side surface 12 of the light-illuminating cover 10 and the convex back surface 14 adjacent to the side surface 12. Therefore, in addition to illuminated surface X and illuminated surface Y, the convex back surface 14 of the illuminated cover 10 can also be made into illuminated surface Z, and the three illuminated surfaces make it possible to inform people using the elevator over a wide area.

[0039] Furthermore, regardless of whether one end face 23 of light guide plate 20 is an inclined face 24, a semicircular end face 26, or a roof-shaped end face 27, if the surface of one end face 23 of light guide plate 20 is painted white, the white paint has light-blocking properties, so that when the amount of irradiation onto side face 12 and convex rear face 14 of illuminated cover 10 is large, it is possible to adjust the amount of irradiation, and it becomes possible to prevent uneven light from occurring on illuminated surface Y and illuminated surface Z.

[0040] 1. Light guide plate type hall lantern 10,10A,10B Illuminated cover 11 Surface 12 Illumination cover side 13 Illumination cover concave back 14 Illumination cover convex rear 20 Light guide plate 21 Transparent acrylic plate 22 Back side of light guide plate 23 One end face 24 Slope 25 Other end face 26 Semicircular end face 27 Roof-shaped end face 30 Light Emitting Diode (LED) 40 Bent Plate 41 Clamping plate 42 Upper Plate 43 Partition 44 Anchor bolt X,Y,Z illumination surface

Claims

1. A light guide plate type hall lantern that can be installed on the corners of the frames or pillars of an elevator hall, an illumination cover made of a resin composition having light diffusibility, at least two surfaces, a front surface and a side surface, being illumination surfaces; a light guide plate provided inside the concave back surface of the illumination cover, having an inclined end surface facing the illumination surface of the side surface of the illumination cover, and having a light guide printing applied to the back surface for guiding light; a light emitting diode disposed on another end surface side of the light guide plate opposite to the one end surface, A light guide plate type hall lantern, characterized in that the light guide print is printed so that the light guide density increases successively as it moves away from the light emitting diode.

2. 2. The light guide plate type hall lantern according to claim 1, A light guide plate type hall lantern, wherein the angle that the one end face of the light guide plate forms with the illumination cover in a horizontal cross section is in the range of 15 degrees to 75 degrees.

3. A light guide plate type hall lantern that can be installed on the corners of the frames or pillars of an elevator hall, an illumination cover made of a resin composition having light diffusibility, the illumination cover having three surfaces, a front surface, a side surface, and a convex rear surface, which are illumination surfaces; a light guide plate provided inside the concave back surface of the illumination cover, the one end surface facing the illumination surface of the side surface of the illumination cover being a semicircular end surface or a roof-shaped end surface, and the back surface being provided with a light guide printing for guiding light; a light emitting diode disposed on another end surface side of the light guide plate opposite to the one end surface, A light guide plate type hall lantern, characterized in that the light guide print is printed so that the light guide density increases successively as it moves away from the light emitting diode.

4. In the light guide plate type hall lantern according to any one of claims 1 to 3, A light guide plate type hall lantern, characterized in that a surface of the one end face of the light guide plate is painted white.

Images