JP4007976B2 - Lighting equipment - Google Patents

Description

  The present invention relates to a novel lighting device that emits soft light through a glass body having a natural stone-like geometric pattern.

  The following Patent Document 1 discloses a glass article in which a plurality of glass grains are heated and softened and fused, and the outer peripheral portion of the glass grains is needle-like β-wollastonite crystals. This uses a granulated material, a granule, a small sphere, a small piece, and a mulled stick formed from a glass obtained by melting a batch of a special blend that is likely to produce crystals of β-wollastonite as glass particles. The heating temperature is maintained at about 1150 ° C. for about 5 minutes.

Patent Document 2 below discloses a crystallized glass material in which a plurality of glass particles are heated and softened and fused, and the outer peripheral portion of the glass particles is a crystal made of Na ₂ O · 2CaO · 3SiO _2. ing. This uses glass grains formed from a molten glass of a batch having a special composition that is likely to produce crystals of Na ₂ O · 2CaO · 3SiO ₂ . The heating temperature is 800-950 ° C.
Japanese Patent Publication No.55-29018 JP-A-6-72741

  The above-mentioned conventional techniques relate to glass materials having natural stone-like aesthetics, and all of them form glass grains from glass obtained by melting a batch of a special blend and use them as raw materials. Therefore, considerable energy, labor, and cost are required to obtain the raw material glass particles. On the other hand, a large amount of soda-lime glass represented by glass bottles is currently on the market, and reuse as a resource is an issue.

  Further, a glass panel produced by firing and softening and fusing glass grains has a low impact strength, and it is dangerous because fragments are scattered when cracked. Furthermore, there is a problem that the attachment method when attaching to a thing is limited and the application is narrow.

  The first object of the present invention is to develop a technology for recycling these soda-lime glass that has been discarded and collected into a glass cullet that can be used as a luminaire. The second object of the present invention is to expand the application of a glass body having a natural stone-like geometric pattern so that it can be used for a lighting fixture.

(Configuration 1) The present invention includes a light source including a framed glass panel in which a plurality of glass particles filled in a metal frame are fired and a glass body in which the glass particles are integrated is formed in the metal frame. It is an illuminating device which is attached to a portion of a box-shaped illuminating device main body that diverges light, and the light diverges through the glass body.

(Configuration 2) In the present invention, a plurality of glass particles filled in a cylindrical metal frame are fired, and a glass body in which the glass particles are integrated in the metal frame is opened on one side of the metal frame. An illuminator characterized in that an end portion is closed, a light source is provided in the metal frame, and light is transmitted through the glass body to diverge.

The expansion coefficient of the metal frame (about 187 × 10 ⁻⁷ / ° C. in the case of stainless steel) is larger than the expansion coefficient of glass (about 85 × 10 ⁻⁷ / ° C.). Not only does the glass body come out of the metal frame, but also compressive stress is generated in the glass body, the impact strength is increased, and even if it breaks, the fragments do not scatter and most of it is inside the metal frame Stays safe. Further, since the outer periphery is made of metal, it can be drilled, attached with screws, or attached by welding, so various attachment methods are possible. The material of the metal frame is not particularly limited as long as it can withstand the firing temperature, but, for example, a material that oxidizes at a high temperature, such as steel, has a scale and needs to be removed. Those having no occurrence of are preferred. In addition, the aesthetics can be enhanced by plating or painting the metal frame after firing.

  The light emitted from the light source is transmitted through a glass body having a natural stone-like geometric pattern to radiate soft light, creating a unique atmosphere.

(Configuration 3) The present invention, in the structure 1 or 2 of the lighting fixture, wherein the glass particles are Si0 ₂ to 70~73mass%, 12~14mass% of Na ₂ O, 10~12mass% of CaO, _Al 2 O ₃ is a composition containing 1.5 to 3.0 mass%, and is heated and fired at a temperature of 880 ° C. to 960 ° C. for 1 to 2 hours to soften and fuse glass grains to form a glass body. It is a lighting fixture.

(Structure 4) Moreover, this invention is an illuminating device characterized by the said glass grain being a soda-lime glass cullet in the illuminating device of the said structures 1-3.

A soda-lime glass cullet is softened and fused by heating at 880 ° C. to 960 ° C. for 1 to 2 hours to obtain a smooth glass body having a geometric pattern without bubbles. The composition of the majority of soda-lime glass bottles to be recovered from the market, Si0 ₂ is 70~73mass%, Na ₂ O is 12~14mass%, CaO is 10~12mass%, _Al 2 _{O 3} is 1.5-3 Since it is 0.0 mass%, the composition of soda-lime glass cullet is the same. Therefore, the glass body in the present invention can use 100% soda lime glass cullet (glass cullet obtained by crushing discarded and collected soda lime glass) as a raw material glass particle, and it is easy to manufacture a lighting device with excellent aesthetics at low cost. And contribute to glass recycling.

Crystals produced by the sintering temperature from the composition of soda-lime glass is Debitoraito _{(Na 2 O · 3CaO · 6SiO} 2). A devitrite is generated from the cullet grain boundary to the inner side of about 0.5 mm and is milky white. The inside of the glass grain remains transparent and amorphous, thereby providing a geometric pattern having translucency. This glass body has a natural texture like natural stone and can be subjected to surface treatment such as polishing.

  880 degreeC-960 degreeC is suitable for the heat processing temperature of the glass grain in this invention. When the temperature is 880 ° C. or lower, the melted glass has a high viscosity and sufficient fluidity cannot be obtained, so that a smooth surface cannot be obtained, and glass particles do not completely adhere to each other. However, there is a disadvantage that the formation of devitrite crystals is not sufficient and a clear geometric pattern cannot be obtained. When the temperature is 960 ° C. or higher, the cullet is completely fused, and the interface that triggers crystal generation is lost, which causes a disadvantage that a geometric pattern cannot be formed.

(Structure 5) Moreover, this invention is a lighting fixture characterized by the thing with the particle size of 3-15 mm of the said glass grain being 90 mass% or more in the lighting fixture of the said configurations 1-4.

  If the glass particles have a small particle size of 3 mm or less, the ratio of crystallization in the particles becomes high and white turbidity occurs. For this reason, transparency is lost, translucency is lowered, and a geometric pattern is not formed. When the size is larger than 15 mm, voids are easily generated between the glass grains. Further, since the glass cullet is composed of almost 15 mm or less glass particles, it is reasonable that the particle size of the glass particles is 3 to 15 mm from the viewpoint of using the glass cullet.

(Configuration 6) The present invention provides the framed glass panel according to any one of the configurations 1 to 5, wherein two or more types of glass cullet having different colors are mixed. It is.

  When different cullet is used in combination, a pattern utilizing the characteristics can be formed on the glass body. The simplest and most effective design method is a method in which a colored cullet is mixed and fired based on flint glass (colorless and transparent glass) cullet. The flint glass is dotted with colored cullet, and by changing the particle size and addition rate of the colored cullet, a beautiful glass body with translucency with various speckled patterns can be obtained. In particular, in the case of glass bottles, since many kinds of colored glass bottles are distributed in the market, it is desirable to use these cullet from the viewpoint of recycling.

(Structure 7) Moreover, this invention is the lighting fixture in any one of the said structures 1-5. WHEREIN: The said glass body is the 1st layer produced | generated from flint glass cullet, and colored glass cullet or colored glass cullet, and flint glass And a second layer produced from a mixture of cullet.

  When the glass body is formed thick, if it is formed only with a colored cullet, the light absorption is large and sufficient translucency cannot be obtained. In this case, a glass body having good translucency can be obtained by making the colored glass layer substantially thin by forming a two-layer structure of flint glass + colored glass.

(Structure 8) The present invention also provides the lighting device according to any one of 1 to 7, wherein the plurality of glass particles include amorphous glass particles having a composition that does not crystallize at 880 ° C to 960 ° C. It is.

When glass grains that do not produce crystals at 880 ° C. to 960 ° C. are used in combination, only that portion becomes a highly transparent and glossy glass, and a glass body that exhibits a unique aesthetic feeling can be obtained. However, an important point as a characteristic value of the glass used in combination is to approximate the expansion coefficient of soda-lime glass as much as possible. If the difference in expansion coefficient is large, tensile stress is generated at the particle welding interface, which causes cracks and breakage. Incidentally, many soda-lime glasses distributed in the market are about 85 × 10 ⁻⁷ cm / ° C.

  The state is different depending on which one is used. For example, if many soda-lime glass cullets are used, transparent irregular areas are formed in the milky white pattern. Conversely, if many non-crystalline glass cullets that are not crystallized are used, a milky white island is formed in the transparent glass. The pattern is dotted. In any case, it is attractive in terms of design, and the effect is enhanced by combination with colored glass.

(Configuration 9) The present invention is also directed to the lighting device of Configuration 1 or 2, wherein the glass body forms a first layer with soda-lime glass cullet and is not crystallized at 880 ° C. to 960 ° C. The second layer is formed of the conductive glass particles, and is heated at 880 ° C. to 960 ° C. for 1 to 2 hours to soften and fuse the cullet or glass particles. At least a part of the illuminating device is characterized in that the outer peripheral portion is crystallized and the inside is amorphous, and the glass particles of the second layer are amorphous.

  By using non-crystallized colored glass cullet that does not crystallize flint soda / lime glass cullet in the second layer in the first layer, the crystallized milky white first layer is hardly crystallized around the cullet A transparent second-layer glass panel having a two-layer structure is obtained. Since it has an amorphous layer, it is a glass body that is remarkably excellent in light transmission, although it is thick and strong. In addition, since it has a unique aesthetic, diversification of design can be expected.

  The glass body in the lighting device of the present invention does not need to be formed by melting a glass having a special composition as a glass particle of a raw material, and 100% soda-lime glass cullet can be used, so it is extremely easy to manufacture at low cost. In addition to being able to do so, it will promote demand for glass cullet and contribute to recycling. Moreover, various aesthetics can be acquired or translucency can be improved by using together a colored cullet and the glass grain which does not crystallize, or making it 2 layer structure.

  Furthermore, the glass body according to the present invention has high impact strength and is strong, and even if it breaks, most of the fragments remain in the metal frame and are not scattered. Moreover, since it has a metal frame, it can be easily attached to a lighting fixture body or the like. In addition, since each cullet particle is covered with a compressed layer of devitrite, the thermal shock strength is greatly improved. The thermal shock strength of ordinary soda lime is around 80 ° C., whereas this glass panel is not broken even when the difference is 200 ° C. or more. That is, even if it is heated by a light source and rainwater is applied, it can be said that damage due to thermal shock does not occur.

  In the illuminator of the present invention, the light emitted from the light source passes through the glass body having a natural stone-like geometric pattern and diverges as soft light, so that it is possible to produce an unprecedented unique atmosphere.

  Hereinafter, the present invention will be described in detail with reference to the drawings relating to the embodiments. 1 is a cross-sectional view of the luminaire 1, FIG. 2 is a front view of the luminaire 1, FIG. 3 is a cross-sectional view of the luminaire 10, FIG. 4 is a plan view of a glass panel 12 with a frame, and FIG. Explanatory drawing of the method of forming the body 3, FIG. 6 is explanatory drawing of the manufacturing method of a glass panel with a frame.

  1 and 2 includes a cylindrical metal frame 2, a glass body 3, a back plate 4 (iron plate), a light source 5 (light bulb), and the like. The metal frame 2 is a stainless steel cylinder, and both ends are open. A glass body 3 is formed by closing the front end face. A light source 5 is attached to the back plate 4 and is attached with screws 6 so as to close the end face on the back side of the metal frame 2, whereby the light source 5 is provided inside the metal frame 2.

  In order to form the glass body 3 on the metal frame 2, as shown in FIG. 5, the metal frame 2 is set on the bottom frame 8 (iron plate), and glass particles 7 (flint) having a particle diameter of 3 to 7 mm are set therein. Fill the glass cullet with a proper amount and level it almost uniformly. This is put into a heating furnace and heated to 930 ° C. at a temperature rising rate of 200 ° C./hour. After maintaining at 930 ° C. for 2 hours, it is cooled to room temperature at a cooling rate of 100 ° C./hour. Thereby, the glass body 3 which has translucency and has a beautiful stone-like geometric pattern was formed. In addition, it is desirable to apply a release agent in advance to the inside of the metal frame 2. This can prevent the glass from cracking near the boundary between the metal frame and the glass. The release agent is a substance that prevents adhesion between glass and metal, such as carion, boron nitride, and alumina.

  When the light source 5 is turned on, the light emitted from the light source passes through the glass body 3 having a natural stone-like geometric pattern and diverges as soft light, so that an unprecedented unique atmosphere can be produced. Further, the glass body 3 having a natural stone-like geometric pattern appears to emit light, and the lighting device itself can be made beautiful.

  3 is provided with a light source 15 (fluorescent lamp) in a main body 11 formed in a box shape with a thin iron plate. A glass panel 12 with a frame is fitted into the open end face of the main body 11 and fixed with screws 16. The framed glass panel 12 is formed by forming a glass body 14 having a thickness substantially the same as the metal frame height in a rectangular metal frame 13, and as shown in FIG. 6, two metal frames 13 on the bottom mold 8, 13 were stacked and filled with a suitable amount of glass particles 7 (flint glass cullet) having a particle size of 3 to 7 mm, and were almost uniformly leveled, fired in a heating furnace, and then gradually cooled. Since the glass cullet has voids, the volume becomes about half after firing. Therefore, after firing, it almost fits in the lower metal frame, and the upper metal frame remains empty. An empty metal frame can be used for the next firing.

  When the light source 15 is turned on, the light emitted from the light source passes through the glass body 14 having a natural stone-like geometric pattern and diverges as soft light, so that an unprecedented unique atmosphere can be produced. In addition, the glass body 14 having a natural stone-like geometric pattern appears to emit light, and the lighting device itself can be seen beautifully.

  As described above, the glass body of the above-described embodiment is a glass body formed by using colored cullet and non-crystallized glass particles together, or a two-layered glass body, thereby providing various beautiful lighting effects. The lighting fixture which has can be obtained.

1 is a cross-sectional view of a lighting tool 1. 1 is a front view of a lighting tool 1. FIG. 1 is a cross-sectional view of a lighting tool 10. FIG. It is a top view of the glass panel 12 with a frame. It is explanatory drawing of the method of forming the glass body 3 in the metal frame 2. FIG. It is explanatory drawing of the manufacturing method of a glass panel with a frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating tool 2 Metal frame 3 Glass body 4 Back plate 5 Light source 6 Screw 7 Glass grain 8 Bottom frame 10 Illuminating tool 11 Main body 12 Glass panel with frame 13 Metal frame 14 Glass body 15 Light source 16 Screw

Claims (9)

  The light of the box-shaped illuminator main body containing a light source including a framed glass panel formed by baking a plurality of glass particles filled in a metal frame and forming a glass body in which the glass particles are integrated in the metal frame A luminaire that is mounted on a portion that diverges light and radiates light through the glass body.   A plurality of glass particles filled in a cylindrical metal frame are fired, and a glass body in which the glass particles are integrated is formed in the metal frame so as to close one open end of the metal frame. An illuminator characterized in that a light source is provided in the metal frame, and light passes through the glass body and diverges. A lighting fixture according to claim 1 or 2, wherein the glass particles are Si0 ₂ to 70~73mass%, Na ₂ O and 12~14mass%, 10~12mass% of CaO, the _Al 2 _{O 3 1.5~3.0mass} %, And is heated and fired at a temperature of 880 ° C. to 960 ° C. for 1 to 2 hours to soften and fuse glass grains to form a glass body.   The lighting fixture according to any one of claims 1 to 3, wherein the glass particles are soda-lime glass cullet.   The lighting fixture according to any one of claims 1 to 4, wherein the glass particles having a particle size of 3 to 15 mm are 90 mass% or more. 6. The lighting device according to claim 1, wherein the glass particles are a mixture of two or more types of glass cullet having different colors.   The lighting device according to any one of claims 1 to 5, wherein the glass body is a first layer generated from a flint glass cullet and a second layer formed from a colored glass cullet or a mixture of a colored glass cullet and a flint glass cullet. And a lighting fixture characterized by comprising:   The lighting fixture according to claim 1, wherein the plurality of glass grains include amorphous glass grains having a composition that does not crystallize at 880 ° C. to 960 ° C.   The lighting device according to claim 1 or 2, wherein the glass body forms a first layer with soda-lime glass cullet, and the second layer with amorphous glass particles having a composition that does not crystallize at 880 ° C to 960 ° C. It is formed by heating at 880 ° C. to 960 ° C. for 1 to 2 hours to soften and melt the cullet or glass particles, and at least a part of the cullet of the first layer is An illuminating device characterized in that an outer peripheral portion is crystallized and an inside thereof is amorphous, and a glass grain of the second layer is amorphous.

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