Glass Blocks

Abstract

To provide a glass block having a light emitting function and light permeability which can be used as a luminaire suppressed in a bias in luminance, and as a lighting window.SOLUTION: In a glass block (1) having a pair of glass moldings (1a, 1b) having light permeability, opened at one-side faces, and formed into box shapes, and a light emitting device (10), the light emitting device (10) is accommodated and air-tightly sealed in an internal space (S) which is formed by joining open ends of the pair of glass moldings (1a, 1b) to each other, a pair of light supplying connection terminals (11, 12) for lighting the light emitting device (10) are arranged at a joining part (3) of the open ends, and in the light emitting device (10), light emitting diodes (15) which are aligned in a plane shape with prescribed intervals are connected to one another in parallel and in series by wiring (16), and arranged in a net shape.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a glass block with a light-emitting function that can be used as a building material, and in particular to a glass block that can be made to emit light by supplying power from an external source and that transmits light when not emitting light, making it usable as a window for illumination and daylighting. [Background technology]

[0002] Glass blocks, which have optical transparency, are advantageous in terms of mechanical strength, heat insulation, sound insulation, and design, which are necessary as building materials, and therefore have been used for example as natural lighting windows in building walls, verandas, and partition walls.

[0003] For example, as shown in Patent Document 1, a glass block equipped with light-emitting diodes that emit light from the internal space and from power supplied from the outside has light transmission and light-emitting functions, and can be used as a natural window and lighting. The light-emitting diode is inserted and fixed in a through-hole provided in one side wall of the glass block so as to communicate with the internal space. The light-emitting diode illuminates the internal space, and the light reflected and scattered by protrusions provided inside the glass block is guided to the outside.

[0004] The light-emitting diodes are molded into a bullet shape using a light-transmitting synthetic resin to protect the light-emitting part, making them a more directional light source than conventional light bulbs. In addition, since the light-emitting diodes are arranged in through holes provided in one side wall of the glass block, there are restrictions on the number of light-emitting diodes used and their arrangement in order to ensure the mechanical strength required for building materials. Therefore, glass blocks that utilize the reflected light and scattered light of the light-emitting diodes cannot radiate light uniformly, so the brightness is likely to be biased. In addition, the light that is directly guided from the light-emitting diodes to the outside is small, and the light is not fully utilized, so the brightness is likely to be insufficient.

[0005] Therefore, instead of the bullet-shaped light-emitting diode, it is conceivable to use a light-emitting diode with weak directivity that radiates light over a wide range, such as the spherical light-emitting diode of Patent Document 2 or the spherical resin-molded light-emitting diode of Patent Document 3. However, since the light is irradiated into the internal space of the glass block and reflected and scattered light is used, the brightness is likely to be biased. On the other hand, when the light is not emitted, the light passing through the glass block is scattered by the protrusions, so the brightness of the transmitted light is biased.

[0006] Also, as shown in Patent Document 4, for example, a glass block is known that includes a flat light-emitting unit, a solar cell, a storage means for storing the power generated by the solar cell, and a light emission control means for the flat light-emitting unit that uses the power stored in the storage means in its internal space. Since the flat light-emitting unit radiates light toward the entire front surface of the glass block, there is little bias in the brightness of the glass block when the flat light-emitting unit emits light. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2007-205124 A [Patent Document 2] Patent No. 3262174 [Patent Document 3] Patent No. 5372766 [Patent Document 4] JP 2001-115595 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the glass block of Patent Document 4, most of the light incident on the glass block from the outside is blocked by the solar cell, the power storage means, the light emission control means, and the flat light emitting section in the internal space, and cannot pass through the glass block. In addition, there is no description that these are formed from a material having light transmission. Therefore, it is difficult to use the glass block of Patent Document 4 as a window for natural lighting. In addition, if the solar cell, the power storage means, the light emission control means, and the flat light emitting section are made small so that light can pass through, the light will be separated into a light transmitting area and a light emitting area, and it is not possible to use the glass block as a window for lighting and natural lighting with little bias in brightness.

[0009] Moreover, the glass blocks of Patent Documents 1 and 4 are susceptible to condensation in the internal space when the temperature difference between the internal space and the outside air decreases due to a drop in the temperature of the outside air. The condensation not only prevents light from passing through, but also corrodes built-in components such as light-emitting diodes, resulting in problems with reliability and durability.

[0010] An object of the present invention is to provide a glass block having a light-emitting function and light transmittance that can be used as a window for lighting and daylighting with little bias in brightness. [Means for solving the problem]

[0011] The glass block of the present invention according to claim 1 includes a pair of glass moldings each formed in a box shape having optical transparency and one open side, and a light emitting device, The light emitting device is formed in a mesh shape by connecting a plurality of light emitting elements arranged in a plane at a predetermined interval in parallel and in series by a plurality of wirings formed on a light-transmitting panel material, and sandwiching the outer periphery of the panel material. the light emitting device is accommodated and hermetically sealed in an internal space formed by joining open ends of the pair of glass molded bodies, and a pair of connection terminals for supplying power to cause the light emitting device to emit light are provided at the joint between the open ends; The internal space is partitioned by the panel material and communicates with the panel material through ventilation holes. It is characterized by the following.

[0012] According to the above configuration, the light emitting device formed by a plurality of light emitting elements arranged in a plane at a predetermined interval is made to emit light, thereby reducing the unevenness of brightness. Furthermore, since the light incident on the glass block from the outside can pass through the plurality of meshes of the light emitting device formed in a mesh shape, the glass block can be used as a daylighting window with less unevenness of brightness. Furthermore, since the light emitting device is hermetically sealed in the internal space of the glass block, it is possible to prevent failure due to rainwater, and it is easy to use it as a building material. Furthermore, since the plurality of light emitting elements of the light emitting device are connected in parallel and in series, even if some of the light emitting elements have a disconnection failure, the non-failed light emitting elements can be made to emit light, thereby improving the durability as a lighting device. In addition, since multiple wirings are formed in the light-transmitting panel material and the internal space partitioned by the panel material is connected by air vents provided in the panel member to make the air pressure uniform, it is possible to prevent the light-emitting element from shaking without impeding the light-collection, and to prevent the light-emitting device from breaking down due to vibration, thereby improving reliability and durability. Furthermore, since the internal space of the glass block is partitioned by the panel material of the light-emitting device, it is possible to improve the mechanical strength, heat insulation, and sound insulation of the glass block.

[0013] The glass block of the invention according to claim 2 is characterized in that, in the invention according to claim 1, the internal space is under negative pressure relative to the outside air. According to the above-mentioned configuration, atmospheric pressure acts on the glass block so that the pair of glass molded bodies are in close contact with each other, thereby increasing the bonding strength of the pair of glass molded bodies and improving the durability of the airtight seal. In addition, since there is little air in the internal space and the moisture contained in this air is also low, condensation is difficult to occur, which prevents condensation in the internal space and prevents breakdown of the light emitting device, improving reliability and durability.

[0014]

[0015]

[0016]

[0017] Claim 3 The glass block of the invention is 1 or 2 In the invention, the pair of connection terminals extend in opposite directions from the light emitting device. According to the above-mentioned configuration, the area of ​​the window for illumination and daylighting can be easily increased by arranging a plurality of glass blocks and connecting them in series. Effect of the Invention

[0018] The glass block of the present invention has a light-emitting function and optical transparency, and can be used as a window for illumination and daylighting with little bias in brightness. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of a glass block according to first and second embodiments of the present invention. [Diagram 2] 1 is a partial perspective view of a glass block according to a first embodiment, seen from the front side. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 2 is an explanatory diagram of light passing through a glass block. [Diagram 5] FIG. 2 is an explanatory diagram of a state in which the light emitting device is illuminated. [Figure 6] 3 is an enlarged view of a main part of the light-emitting element of FIG. 2. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] 7 is a view corresponding to FIG. 6 and showing a modified example of the light emitting device. [Figure 9] 9 is a cross-sectional view taken along line IX-IX in FIG. 8. [Figure 10] FIG. 11 is a partial perspective view of a glass block according to a second embodiment, as viewed from the front side. [Figure 11] 11 is a cross-sectional view taken along line XI-XI in FIG. 10 for explaining light passing through the glass block. [Figure 12] FIG. 2 is an explanatory diagram of a state in which the light emitting device is illuminated. [Figure 13] 11 is an enlarged view of a main part of the light-emitting element of FIG. 10. [Figure 14] 14 is a cross-sectional view taken along line XIV-XIV in FIG. 13. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, the mode for carrying out the present invention will be described based on examples. EXAMPLES

[0021] As shown in Figs. 1 to 3, the glass block 1 with a square front surface is formed by bonding open ends of a pair of glass moldings 1a, 1b, each of which is light-transmitting and formed in a box shape with one square side open, with, for example, a modified silicone adhesive 2. A light-emitting device 10 is accommodated in the internal space S of the glass block 1 thus formed. The front surface of the glass block 1 is not limited to a square, and may be any shape that can be used as a building material, such as a rectangle. In the following description, the glass molding 1a side of the glass block 1 is referred to as the front surface, the glass molding 1b side is referred to as the back surface, and the four surfaces between the front surface and the back surface are referred to as side surfaces.

[0022] A groove 4 is formed around the glass block 1 on the four side surfaces of the glass block 1, which constitutes a joint 3 where the open ends of a pair of glass moldings 1a, 1b are joined together, and a sealant 5, for example an epoxy resin, is disposed so as to fill this groove 4. The internal space S of the glass block 1 is hermetically sealed by the adhesive 2 and the sealant 5.

[0023] The internal space S of the glass block 1 is under negative pressure relative to the outside air. When the pair of glass moldings 1a, 1b are joined to house the light emitting device 10, the internal space S is under negative pressure by joining them in a reduced pressure atmosphere of, for example, about 0.6 atm, and the negative pressure is maintained because they are hermetically sealed. In a normal atmospheric pressure atmosphere, the atmospheric pressure P acts so that the pair of glass moldings 1a, 1b are in close contact with each other, so that the airtightness is further improved. In addition, since there is little air trapped in the internal space S, the moisture contained therein is also little, so that condensation, in which the moisture in the internal space S condenses, is unlikely to occur even when the pair is cooled by a drop in the outside air temperature. It is preferable to join the pair of glass moldings 1a, 1b in a reduced pressure dry air atmosphere.

[0024] A pair of connection terminals 11, 12 for supplying power to make the light emitting device 10 emit light are provided at a joint 3 between the open ends of a pair of glass moldings 1a, 1b, and are exposed to the outside of the glass block 1 through an adhesive 2 and a sealant 5. Therefore, by arranging a plurality of glass blocks 1, one connection terminal 11 and the other connection terminal 12 can be easily connected in series or in parallel, and the area of ​​the window for illumination and daylighting can be expanded.

[0025] The light emitting device 10 is formed in a mesh shape by connecting a plurality of double-sided light emitting elements 14, which are arranged in a plane parallel to the front surface at a predetermined interval, in parallel and in series by a plurality of wirings 16. Here, 50 light emitting elements 14 are connected in parallel and in series by nine wirings 16. The predetermined interval is appropriately set according to, for example, the number of light emitting elements 14 set to satisfy the brightness required for the light emitting device 10. The light emitting elements 14 are molded into a spherical shape using optically transparent synthetic resin 22 (e.g., epoxy resin, silicone resin) with a light emitting portion 15 (described later) at the center.

[0026] The wiring 16 is a lead frame formed, for example, by punching a silver-plated copper alloy sheet by press working. The connection terminals 11, 12 are also formed, for example, by punching a silver-plated copper alloy sheet by press working. The multiple light-emitting elements 14 at both ends of the series direction of the mesh-like light-emitting device 10 are connected in parallel by the connection terminals 11, 12. The portions of the connection terminals 11, 12 that extend in the form of tabs in opposite directions from the light-emitting device 10 are exposed to the outside of the glass block 1.

[0027] The pair of connection terminals 11, 12 are provided with one or more reference holes 11a, 12a for positioning the light emitting device 10 relative to the glass molding 1a, for example. Similarly, one or more reference holes 16a are provided in the wiring 16 at the center in the series direction. The connection terminals 11, 12 and the portion of the wiring 16 having the reference hole 16a are fixed by an adhesive 2 in a state where they are sandwiched between the open ends of the pair of glass moldings 1a, 1b at the joint 3.

[0028] 4, most of the light incident on the glass block 1 from the front passes through the mesh of the mesh-like light-emitting device 10 (the portion between the multiple wirings 16 where there are no light-emitting elements 14) as in light ray I1, to reach the rear surface and pass through the glass block 1. Since the mesh is formed over the entire light-emitting device 10, it is possible to reduce bias in the brightness of the light passing through the glass block 1. Light also passes through the glass block 1 in the opposite direction (from the rear surface to the front) as in light ray I2.

[0029] 5, when the light emitting device 10 is made to emit light by supplying power via the connection terminals 11 and 12, the plurality of light emitting elements 14 radiate light toward the front side of the light emitting device 10 as in the group of light rays Ef and toward the rear side of the light emitting device 10 as in the group of light rays Eb. Since the plurality of light emitting elements 14 arranged in a plane are made to emit light, it is possible to reduce unevenness in the brightness of the light emitting device 10.

[0030] 6 and 7, the light emitting section 15 of the dual-side emission type light emitting element 14 is a dual-side emission type InGaN-based blue light emitting diode formed by laminating an n-type semiconductor layer 15b, a light emitting layer 15c, and a p-type semiconductor layer 15d on the front side of a transparent sapphire base 15a. The light emitting element 14 emits light to the front side of the sapphire base 15a as shown by the group of rays Ef, and also emits light to the back side as shown by the group of rays Eb.

[0031] In order not to block the light radiated to the back side of the sapphire base 15a, the outer edge portion of the back side of the sapphire base 15a is adhered to one end (tip) of a pair of finger electrodes 19, 20 by an insulating adhesive 18 containing, for example, epoxy resin. A positive electrode 15e connected to the p-type semiconductor layer 15d and a negative electrode 15f connected to the n-type semiconductor layer 15b are connected to the corresponding finger electrodes 19, 20 by gold wires 21a, 21b having a diameter of, for example, 0.1 mm.

[0032] The finger electrodes 19 and 20 are formed, for example, by punching a silver-plated copper alloy sheet by press working. The tip of the finger electrode 19 is formed, for example, in a U-shape. The tip of the finger electrode 20 is formed, for example, in a T-shape.

[0033] The light-emitting element 14, including the tips of the pair of finger electrodes 19, 20 and the gold wires 21a, 21b, is molded into a spherical shape with the light-emitting portion 15 at the center by optically transparent synthetic resin 22. The light-emitting portion 15 is protected by the synthetic resin 22. By mixing, for example, a phosphor into this synthetic resin 22, it is possible to convert part of the blue light emitted by the light-emitting portion 15 into yellow light, and to cause the light-emitting element 14 to emit white light by combining the blue light and the yellow light.

[0034] Furthermore, the light emitted from the light-emitting section 15 is incident on the interface between the synthetic resin 22 and the air at a substantially right angle, so reflection is suppressed and most of the light is emitted outside the synthetic resin 22. Therefore, more light is emitted outside the synthetic resin 22 than, for example, a conventional light-emitting diode molded into a bullet shape, and the light emitted from the light-emitting element 14 can be fully utilized, while the light directionality is weakened, so that unevenness in the brightness of the light-emitting device 10 can be reduced.

[0035] The other end (base end) of each pair of finger electrodes 19, 20 that is not molded is connected to the corresponding wiring 16 or the corresponding connection terminals 11, 12, respectively, by, for example, a conductive paste 23. Although not shown in the figure, the finger electrodes 19, 20 may be formed integrally with the wiring 16.

[0036] 8 and 9, the light emitting element 14 of the light emitting device 10 may be molded with the finger electrodes 19, 20 and the plurality of wirings 16 when the light emitting element 14 is molded into a sphere with the light emitting portion 15 at the center by the optically transparent synthetic resin 22. When the wirings 16 are formed of a thin lead frame or a thin wire, the wirings 16 can be covered and hardened with the synthetic resin 22 to prevent bending. In addition, the wirings 16, the finger electrodes 19, 20, and their connection portions can be prevented from being oxidized or corroded by preventing contact with air. The spaces between the plurality of wirings 16 may also be molded so as to be filled with the optically transparent synthetic resin 22. EXAMPLES

[0037] An example will be described in which the light emitting device 10 of the glass block 1 in the embodiment 1 is modified. The same parts as those in the embodiment 1 are given the same reference numerals as those in the embodiment 1, and the description thereof will be omitted. As shown in Figures 10 to 12, a light emitting device 30 is housed in and hermetically sealed in an internal space S of a glass block 1 formed by joining the open ends of a pair of glass moldings 1a, 1b, and the internal space S is at negative pressure relative to the outside air.

[0038] The light emitting device 30 has a square panel material 31 having optical transparency, a plurality of light emitting elements 34, and a plurality of wirings 36, and the four sides of the panel material 31 are fixed at joints 3 by an adhesive 2. The panel material 31 is a glass substrate 31b covered on one side with a transparent sheet 31a made of, for example, polyethylene naphthalate, and a plurality of wirings 36 are formed on the transparent sheet 31a. The plurality of light emitting elements 34 each have a light emitting portion 35 and a reflecting cup 33 for emitting light to one side. The panel material 31 is provided with one or more ventilation holes 31c penetrating the panel material 31 in order to make the air pressure in the internal space S uniform.

[0039] The light emitting device 30 is formed in a mesh shape by connecting a plurality of light emitting elements 34, which are arranged in a plane at a predetermined interval on a transparent sheet 31a of a panel material 31, in parallel and in series by a plurality of wirings 36. Since the panel material 31 is optically transparent, light passes through the portions (mesh) between the plurality of wirings 36 where there are no light emitting elements 14, for example, as light rays I1 and I2. Furthermore, since the plurality of wirings 36 are formed in the panel material 31, the light emitting elements 34 are unlikely to swing even if external vibrations are transmitted. Furthermore, since the internal space S of the glass block 1 is partitioned into the front side and the back side by the panel material 31 of the light emitting device 30, the mechanical strength, heat insulation, and sound insulation of the glass block 1 are improved.

[0040] The multiple light-emitting elements 34 at both ends of the light-emitting device 30 in the series direction are connected in parallel by the connection terminals 11, 12, and the tab-like portions of the connection terminals 11, 12 extending in opposite directions are exposed to the outside of the glass block 1. The glass substrate 31b has been removed from these tab-like extending portions. When the light-emitting device 30 is made to emit light by supplying power via the connection terminals 11, 12, light is emitted from one side of the light-emitting device 30 toward, for example, the front side of the glass block 1, as shown by the group of rays Ef.

[0041] 13 and 14, the reflector cup 33 has a rectangular parallelepiped body 33a made of, for example, synthetic resin, a truncated cone-shaped recess that tapers in diameter as it gets deeper from one side of the body, and a pair of finger electrodes 39, 40. The portion of the reflector cup 33 that corresponds to the side surface of the truncated cone-shaped recess serves as a reflector surface 33b. For example, a metal reflector film may be formed on the reflector surface 33b.

[0042] One end of each of the pair of finger electrodes 39, 40 is exposed in the respective truncated cone-shaped recesses. The other ends of each of the pair of finger electrodes 39, 40 extend in opposite directions from opposite side surfaces of the reflective cup 33, and are connected and fixed to the corresponding wiring 36 or the corresponding connection terminals 11, 12 by conductive paste 43. The reflective cup 33 may be fixed to the panel material 31 by, for example, an adhesive.

[0043] The light emitting section 35 is formed by laminating an n-type semiconductor layer 35b, a light emitting layer 35c, and a p-type semiconductor layer 35d on the front surface side of a transparent sapphire base 35a, for example. In the recess of the reflector cup 33, the back surface of the sapphire base 35a of the light emitting section 35 is fixed to one end of a finger electrode 39 by an insulating adhesive 38 containing, for example, epoxy resin. A positive electrode 35e connected to the p-type semiconductor layer 35d and a negative electrode 35f connected to the n-type semiconductor layer 35b are connected to the corresponding finger electrodes 39, 40 by gold wires 41a, 41b having a diameter of, for example, 0.1 mm.

[0044] With the light emitting section 35 housed in the truncated cone-shaped recess and connected to the finger electrodes 39, 40, the recess is filled with an optically transparent embedding synthetic resin 37 to protect the light emitting section 35. If the light emitting section 35 is, for example, an InGaN-based blue light emitting diode, for example, a phosphor may be mixed into the embedding synthetic resin 37 to convert part of the blue light emitted by the light emitting section 35 into yellow light, and the blue light and yellow light may be combined to cause the light emitting element 34 to emit white light.

[0045] The light emitted by the light-emitting unit 35, including the light reflected by the reflecting surface 33b of the reflecting cup 33, is emitted towards the front surface of the sapphire base 35a as shown by the group of rays Ef. The light-emitting device 30 is formed by arranging a plurality of light-emitting elements 34 having reflecting cups 33 in a plane so that light is emitted towards the same side, and can therefore be used as lighting that illuminates the front side by emitting light towards the front side of the glass block 1, for example. By housing the light-emitting device 30 in the glass block 1 in the reverse direction, it can also be used as lighting that illuminates the back side of the glass block 1.

[0046] The operation and effects of the glass block 1 of the above-mentioned first and second embodiments will be described. The glass block 1 has a pair of glass moldings 1a, 1b each formed in a box shape having optical transparency and one open side, and light emitting devices 10, 30. The light emitting devices 10, 30 are housed and hermetically sealed in an internal space S formed by joining the open ends of the pair of glass moldings 1a, 1b. A pair of connection terminals 11, 12 for supplying power to make the light emitting devices 10, 30 emit light are provided at a joint 3 between the open ends. The light emitting devices 10, 30 are formed in a mesh shape by connecting a plurality of light emitting elements 14, 34 arranged in a plane at a predetermined interval and connected in parallel and in series by a plurality of wirings 16, 36.

[0047] By emitting light from the light-emitting device 10, 30 formed of a plurality of light-emitting elements 14, 34 arranged in a plane at a predetermined interval, it is possible to reduce the unevenness of brightness. Furthermore, since the light incident on the glass block 1 from the outside can pass through the plurality of meshes of the mesh-like light-emitting devices 10, 30, the glass block 1 can be used as a daylighting window with little unevenness of brightness. Furthermore, since the light-emitting devices 10, 30 are hermetically sealed in the internal space S of the glass block 1, it is possible to prevent failure due to rainwater, and it is easy to use it as a building material. Furthermore, since the plurality of light-emitting elements 14, 34 of the light-emitting device 10, 30 are connected in parallel and in series, even if some of the plurality of light-emitting elements 14, 34 are broken, the non-failed light-emitting elements can be made to emit light, and the durability as a lighting device can be improved.

[0048] The internal space S of the glass block 1 is at a negative pressure relative to the outside air. Therefore, atmospheric pressure P acts on the glass block 1 so that the pair of glass moldings 1a, 1b are in close contact with each other, thereby increasing the bonding strength of the pair of glass moldings 1a, 1b and improving the durability of the airtight seal. In addition, the internal space S contains little air and little moisture, making it difficult for condensation to occur, which prevents condensation in the internal space S and prevents breakdowns in the light emitting devices 10, 30, improving reliability and durability.

[0049] The light emitting element 14 has a light emitting section 15 molded into a spherical shape using optically transparent synthetic resin 22. Therefore, the light emitting section 15 is protected by the spherical synthetic resin 22. The light emitted by the light emitting section 15 is less likely to be reflected at the interface between the spherical synthetic resin 22 and the air, and is emitted outside the spherical synthetic resin 22, weakening its directivity. Since the light emitting device 10 is formed by arranging such light emitting elements 14 in a plane, it is possible to reduce unevenness in brightness when the light emitting device 10 is made to emit light.

[0050] The light emitting device 10 may be integrated by molding the light emitting parts 15 of the plurality of light emitting elements 14 into a spherical shape with the optically transparent synthetic resin 22, and molding the plurality of wirings 16 with the optically transparent synthetic resin 22. In this case, it is possible to reduce the unevenness of the brightness of the light emitting elements 14 whose light emitting parts 15 are molded into a spherical shape, and it is also possible to protect the plurality of light emitting parts 15 and the plurality of wirings 16 from the air in the internal space S, and to reinforce the connection between the light emitting elements 14 and the wirings 16 with the synthetic resin 22. Therefore, it is possible to prevent the light emitting device 10 from breaking down, and to improve the reliability and durability. In addition, since it is reinforced with the synthetic resin 22, it is possible to form the plurality of wirings 16 thin to increase the amount of light passing through the mesh.

[0051] The light emitting device 30 is formed by connecting a plurality of light emitting elements 34 to a plurality of wirings 36 formed on a light-transmitting panel material 31. In this case, since the plurality of wirings 36 are formed on the light-transmitting panel material 31, it is possible to prevent the light emitting elements 34 from swinging without impeding the transmission of light, and it is possible to prevent the light emitting device 30 from breaking down due to vibration and improve its reliability and durability. Moreover, since the internal space S of the glass block 1 is partitioned by the panel material 31 of the light emitting device 30, it is possible to improve the mechanical strength, heat insulation, and sound insulation of the glass block 1.

[0052] A pair of connection terminals 11, 12 extend in opposite directions from the light emitting devices 10, 30. Therefore, by arranging a plurality of glass blocks 1 and connecting them in series or parallel, the area of ​​the window for illumination and daylighting can be easily expanded.

[0053] In Example 1, the same effect as above can be obtained by housing a light emitting device in which spherical light emitting diodes are arranged in a plane in the internal space S of the glass block 1, instead of the spherically molded light emitting elements 14. Also, in Example 2, a light emitting device can be formed in which spherically molded light emitting elements 14 or spherical light emitting diodes are arranged in a plane on the panel material 31, instead of the light emitting elements 34. In addition, a person skilled in the art can implement the present invention in various forms by adding various modifications to the above embodiments without departing from the spirit of the present invention, and the present invention includes such modifications. [Explanation of symbols]

[0054] 1: Glass block 1a, 1b: Glass molded body 2: Adhesive 3:Joint part 4:Groove 5: Sealing material 10,30: Light emitting device 11,12: Connection terminal 14,34: Light emitting element 15,35: Light emitting part 15a, 35a: Sapphire base 15b, 35b: n-type semiconductor layer 15c, 35c: Light-emitting layer 15d, 35d: p-type semiconductor layer 15e, 35e: positive electrode 15f, 35f: negative electrode 16,36: Wiring 18,38: Insulating adhesive 19, 20, 39, 40: Finger electrodes 21a, 21b, 41a, 41b: Gold wire 22: Synthetic resin 23: Conductive paste 31: Panel material 31a: Transparent resin sheet 31b: Glass substrate 31c: Ventilation hole 33: Reflective cup 33a: Main body 33b: Reflective surface 37: Embedded synthetic resin S:Internal space

Claims

1. A glass block including a pair of glass moldings each formed in a box shape having optical transparency and one open side, and a light emitting device, The light emitting device is formed in a mesh shape by connecting a plurality of light emitting elements arranged in a plane at a predetermined interval in parallel and in series by a plurality of wirings formed on a panel material having optical transparency, the light emitting device is accommodated in an internal space formed by joining open ends of the pair of glass molded bodies to each other so as to sandwich an outer periphery of the panel material, and the light emitting device is hermetically sealed in the internal space; a pair of connection terminals for supplying power to cause the light emitting device to emit light are provided at the joint between the open ends; The glass block is characterized in that the internal space is partitioned by the panel material and communicates with each other through ventilation holes provided in the panel material.

2. 2. The glass block according to claim 1, wherein the internal space is at a negative pressure relative to the outside air.

3. A glass block as described in claim 1 or 2, characterized in that the pair of connection terminals extend in opposite directions from the light-emitting device.

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