JP2007095474A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire capable of generating an antistatic effect on all the surfaces of a shade only by forming an antistatic layer on one-side surface of the shade, and of restraining degradation of luminaire efficiency. <P>SOLUTION: Since the antistatic layer 50 having a back face effect is arranged on a surface on the side (in the arrow A direction) facing to a luminaire body 11, an antistatic effect is generated not only on the surface on the luminaire body 11 side but also on the front side of a base material 41 opposite to the luminaire body 11 side. Since an antireflection layer 60 having a low refraction index is formed on the front side opposite to the side of the antistatic layer 50, the transmission factor of the base material 41 of the shade 40 can be improved. Thereby, even if light emitted from an annular fluorescent lamp 1 is partially lost by the antistatic layer 50, degradation of the luminaire efficiency can be restrained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lighting fixture having a shade.

  2. Description of the Related Art Conventionally, for example, a so-called sealed type is known as a kind of lighting fixture provided on a ceiling of a general house, in which a lower surface portion opposite to the ceiling side of the fixture body is covered with a shade made of plastic resin. In addition, a so-called open type is known that is not sealed as described above, but is simply provided so that the instrument body and the light source cannot be seen from below.

  A shade made of such a general plastic resin is formed by extrusion molding or pressure molding from a resin sheet having translucency, and usually has a charging property if no processing is performed on the surface thereof. Met. Thus, when it has electrification property, the dust etc. in the air will adhere to a shade, and there existed a subject that maintenance must also be performed frequently while the external appearance property fell.

As a method for solving this, a technique of forming an antistatic layer on the surface of the shade is known (for example, see Patent Document 1).
JP 2002-170412 A

  However, the prior art described in Patent Document 1 discloses that an antistatic layer may be provided on the light source side, but if it is a simple antistatic layer, the surface opposite to the light source side is charged. Since the prevention property cannot be imparted, the problem caused by the charging property of the shade cannot be solved.

  In addition, if the antistatic layer is simply provided on the light source side, the irradiation light from the light source will be lost by the antistatic layer. There was a problem that efficiency would decrease.

  The present invention has been made in view of the above, and it is possible to produce an antistatic effect on the entire surface of the shade simply by providing an antistatic layer on one side of the shade, and to suppress a decrease in the efficiency of the appliance. The purpose is to provide equipment.

  The lighting fixture according to claim 1 is a fixture main body on which a light source can be disposed; a plastic shade mounted so as to cover a lower surface side of the fixture main body; and a back surface formed on a surface of the shade on the fixture main body side. An antistatic layer having an effect; and an antireflection layer having a low refractive index formed on the surface of the shade opposite to the device body side.

  The lighting fixture according to claim 2 is characterized in that, in the lighting fixture according to claim 1, the antireflection layer has a high contact angle to moisture and oil and has water repellency and oil repellency.

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.

  The light source may be in any form such as a fluorescent lamp, LED, incandescent light bulb, and the configuration, structure and light emission principle are not particularly limited as long as it has a light emitting action. Also, the shape is not particularly limited. For example, as long as it is a fluorescent lamp, it may have a straight tube shape, an annular shape or a polygonal shape, or may have a single tube structure or a multiple tube structure.

  The base material of the seed is formed of an acrylic resin, a styrene resin, a polyethylene resin, or the like, and the material constituting the base material is not particularly limited. Further, it is preferable that the thickness is up to about 3 mm. The reason is that if the thickness exceeds 3 mm, the antistatic back effect described later cannot be sufficiently obtained, and the transmittance of the shade itself is lowered.

  In addition, the shade has a so-called sealed shape (an opening surface and a bottom portion opposed to the opening surface, and when the opening surface side is mounted so as to cover the lower surface side of the device main body, the lower surface side and the bottom portion of the device main body Any form such as a form in which a space portion is formed or a so-called open form may be used.

  The antistatic layer produces an antistatic effect (so-called back effect) on the side opposite to the shade surface on which the antistatic layer is provided. The composition is not particularly limited, but a polymer type quaternary ammonium salt compound is preferred. The reason is that it is effective in terms of durability and back effect. The thickness of the layer is preferably 0.01 μm to 20 μm. The reason is that if it is 0.01 μm or less, a sufficient back surface effect cannot be obtained, and if it is 20 μm or more, the transmittance is lowered.

  The antireflection layer is a layer in which a compound having a high transmittance and a low refractive index is formed. It is preferable to use a solvent-soluble fluororesin having a high contact angle to moisture and oil and having a low refractive index. The reason for this is that, in addition to the effect of the antireflection layer, it can also have water repellency and oil repellency. The layer thickness is preferably 0.01 μm to 1.5 μm. The reason is that if it is 0.01 μm or less, a sufficient effect as an antireflection layer cannot be obtained, and if it is 1.5 μm or more, the insulating property becomes too high and the back effect of the antistatic layer is obtained. Because it disappears.

  According to the present invention, since the antistatic layer having the back effect is disposed on the surface on the side opposite to the lower side of the instrument body, not only on the instrument body surface but also on the surface side opposite to the instrument body side. Can also produce an antistatic effect. Further, since the antistatic layer is provided on the side of the instrument body, the appearance is not deteriorated by the antistatic layer, and the degree of freedom in design is not limited. In addition, since the antistatic layer is not formed on the surface opposite to the device body side that is normally exposed to the outside, the antistatic layer is unlikely to peel off due to external factors, and the antistatic property may be reduced. Can be suppressed.

  Furthermore, since the antireflective layer having a low refractive index is formed on the surface side of the shade opposite to the main body, the transmittance of the shade is improved. That is, even if the irradiation light from the light source is lost by the antistatic layer, the transmittance of the shade is increased, so that a decrease in the instrument efficiency is suppressed.

  Furthermore, since the antistatic layer and the antireflection layer are formed on different surfaces of the shade, the operation of forming each layer on the substrate of the shade is easy, and productivity does not decrease.

  Further, when the antireflection layer has water repellency and oil repellency, it is more preferable because the antifouling property is further enhanced in addition to the antistatic effect.

  The lighting fixture according to claim 3 is the lighting fixture according to claim 2, wherein an antireflection layer having water repellency and oil repellency is further formed on the surface of the antistatic layer on the side of the main body. .

  According to the present invention, since an antireflection layer having water repellency and oil repellency is also formed on the apparatus main body side, antistatic property and water repellency and oil repellency are imparted over the entire surface of the shade, The antifouling property can be remarkably improved. Thereby, while being able to suppress that designability falls, the burden of maintenance, such as washing | cleaning, can be reduced with respect to a user, for example.

  The lighting fixture according to claim 4 is the lighting fixture according to any one of claims 1 to 3, wherein the shade has a multilayer structure including a first plastic substrate and a second plastic substrate, and the antistatic layer is It is characterized by being used as an adhesive between the first plastic substrate and the second plastic substrate.

  According to the present invention, since the antistatic layer is provided between the first and second plastic base materials forming the shade, even if it is used for a long time, it is possible to prevent the deterioration of the function due to external factors. The weather resistance of the antistatic layer is improved.

  According to the first aspect of the present invention, since the antistatic layer having the back surface effect is disposed on the surface on the side opposite to the lower side of the instrument body, not only the instrument body surface but also the side opposite to the instrument body side is provided. An antistatic effect can also be produced on the surface side. Moreover, since the low-refractive-index antireflection layer is formed on the surface side of the shade opposite to the instrument body side, the instrument efficiency is prevented from decreasing.

  According to the second aspect of the present invention, in addition to the effect of the first aspect, the antifouling property is further enhanced on the opposite surface of the shade on the side of the instrument body in addition to the antistatic effect, so that the maintainability is improved. .

  According to invention of Claim 3, in addition to the effect of Claim 1 or 2, since antistatic property, water repellency, and oil repellency are provided over the whole surface of shade, antifouling property is remarkably improved. Can be improved.

  According to the invention described in claim 4, in addition to the effect described in claim 1, even if it is used for a long time, the antistatic function can be prevented from being deteriorated due to an external factor. Will improve.

  An embodiment of the present invention will be described with reference to the drawings. Drawing 1 is a sectional view showing the lighting fixture of a first embodiment.

  In the figure, the luminaire 10 includes an annular fluorescent lamp 1, which is a light source, a luminaire main body 11, a lighting device 25, a shade 40, and the like.

  The annular fluorescent lamp 1 has an annular glass bulb 2 formed to have a tube outer diameter of 25.5 mm or less, for example, 19 mm, and a discharge medium containing a rare gas and mercury is enclosed in the glass bulb 2. A phosphor film is formed on the inner wall surface of the glass bulb 2, electrodes are arranged on both ends of the glass bulb 2, and a base 3 is arranged across both ends of the glass bulb 2. The base 3 is provided with a plurality of base pins (not shown) that are electrically connected to the electrodes so as to project obliquely outward from the annular virtual axis of the glass bulb 2.

  The instrument body 11 is circular and thin in appearance, and is attached to the lower surface of the top plate 12 having substantially the same shape. The upper surface of the top plate 12 serves as an attachment surface 12a to the ceiling surface 27 described later. A circular opening 13 is formed in the vertical direction in the center of the instrument body 11, and a storage part 15 having an annular storage space 14 is formed around the opening 13. A reflecting plate 16 is formed on the surface side facing the top plate 12 and on the lower surface side of the instrument body 11 via the storage portion 15.

  In addition, a pair of sockets 18 are disposed on the reflecting plate 16 corresponding to the positions where the two annular fluorescent lamps 1 are disposed. The socket 18 protrudes perpendicularly from the reflecting plate 16 to form a socket portion (not shown) into which a cap pin is inserted and electrically connected, and is fitted to the outer periphery of the cap 3. A substantially C-shaped holder portion 20 to be held is formed.

  In addition, a pair of lamp holders 21 is disposed on the reflecting plate 16 at positions symmetrical to the position of the socket 18 corresponding to the positions where the two annular fluorescent lamps 1 are disposed. The lamp holder 21 protrudes perpendicularly from the reflector 16 and is formed with a substantially C-shaped holder portion 22 that fits and holds the outer periphery of the glass bulb 2. Note that a baby ball (not shown) is provided on the reflecting plate 16 so as to project in a vertical direction with respect to the ceiling surface 27.

  A lighting device (inverter lighting device) 25 having an inverter circuit is disposed in the storage space 14 of the storage portion 15 of the instrument body 11. An adapter 26 is electrically connected to the power input side of the lighting device 25 by an electric wire or the like, and each socket 18 is electrically connected to the output side by an electric wire or the like. The adapter 26 is formed in a disk shape with a small height, and is integrally fixed to the instrument body 11 via a coupling part (not shown) on the lower side in the opening 13 of the instrument body 11, along the coupling part. It is connected to the power input side of the lighting device 25 by an electric wire or the like that is wired. The adapter 26 is electrically connected to the hook ceiling installed on the ceiling surface 27 and mechanically supported when the appliance is attached.

  A shade 40 is attached to the instrument body 11 so as to cover the lower surface side and the side of the instrument body 11. The shade 40 is made of milky white having an acrylic resin having translucency and diffusibility as a base material 41, and is formed in a thin shape that gently protrudes. And while the bottom part 31 is formed with a large circular arc surface below, the attachment edge part 30 attached to an instrument main body is formed in a peripheral part, and the opening surface 31 is formed inside this attachment edge part 30. .

  The surface configuration of the base 41 of the shade 40 will be described with reference to FIG. FIG. 2 is a partially enlarged cross-sectional view in which a main part of the shade 40 is enlarged.

  The base 41 of the seed 40 is made of an acrylic resin having a thickness of about 2 mm. And the antistatic layer 50 is formed in the one surface side of the base material 41, and the antireflection layer 60 is formed in the other surface side.

  The antistatic layer 50 is formed on the base 41 of the shade 40 on the side facing the lower surface side of the instrument body 11 (direction A in FIG. 2). The antistatic layer 50 also causes an antistatic effect (so-called back effect) on the surface side of the base material 41 opposite to the surface side of the base material 41 on which the antistatic layer 50 is provided. is there. Further, the composition is mainly a polymer type quaternary ammonium salt compound, and the film thickness is 1 μm.

  The antireflection layer 60 is on the surface of the base 41 of the shade 40 opposite to the antistatic layer 50. The antireflection layer 60 is a layer in which a compound having a high transmittance and a low refractive index is formed. Further, the composition thereof is a solvent-soluble fluororesin or the like, which has, for example, a cyclic perfluoroether as a main component and a functional group such as a carboxyl group in the molecule. Thereby, in addition to the antireflection effect, the layer has a water repellency and oil repellency with a high contact angle to moisture and oil. Furthermore, the film thickness is 0.1 μm.

  In addition, as a method of forming the antistatic layer 50 and the antireflection layer 60 on each surface of the base material 41 of the shade 40, for example, printing, spraying, a spin coater, a dip method, or the like may be used. Furthermore, in order to improve the adhesiveness of each layer, the surface treatment of the base material 41, a primer treatment, etc. may be given.

  The operation of this embodiment will be described.

  The instrument body 11 is supported by the ceiling surface 27 via an adapter 26 connected to a hook ceiling 28 installed on the ceiling surface 27, and the instrument body 11 side and the hook ceiling 28 side are connected to each other. Electrically connected, and power is supplied to the lighting device 15 of the storage unit 14.

  Two annular fluorescent lamps 1 having different lamp diameters are disposed on the reflector 16 of the instrument body 11, and a base pin protruding from the base 3 is inserted and connected to the socket 18. The glass bulb 2 is held by the lamp holder 21. Then, a shade 29 is mounted on the instrument main body 11 so as to cover the annular fluorescent lamp 1, the adapter 26, a baby ball (not shown), and the like, and a space 32 is formed by the reflector 16 of the instrument main body 11 and the bottom 31 of the shade 29. . Thereafter, the lighting control of the annular fluorescent lamps 1 and 1 is performed by operating a remote control device or a wall switch, for example.

  In such a usage pattern, according to the present embodiment, since the antistatic layer 50 having the back effect is disposed on the surface on the side facing the instrument body 11, not only the surface on the instrument body 11 side but also the instrument body 11. The antistatic effect can be produced also on the surface side of the base material 41 opposite to the side. Therefore, antistatic properties can be easily imparted to the entire surface of the shade 40. In addition, since the antistatic layer 50 may be only on one side of the shade 40, the cost can be suppressed even when antistatic properties are imparted to the entire surface of the shade 40. Further, since the antistatic layer is provided on the side of the instrument body 11, the appearance (designability) of the shade 40 is not deteriorated by the antistatic layer 50, and the design freedom is not limited. In addition, since the antistatic layer 50 is not formed on the surface side opposite to the device body 11 side that is normally exposed to the outside, the antistatic layer is hardly peeled off due to external factors, and the antistatic property is reduced. It is possible to suppress the risk of the occurrence.

  Furthermore, since the antireflective layer 60 having a low refractive index is formed on the surface opposite to the antistatic layer 50, the transmittance of the base material 41 of the shade 40 is improved. For this reason, even if the irradiation light from the annular fluorescent lamp 1 is lost by the antistatic layer 50, the transmittance of the shade 40 is high, so that a decrease in instrument efficiency is suppressed. In addition, since the antireflection layer 60 has water repellency and oil repellency, the antifouling property is further enhanced in addition to the antistatic effect, so that the appearance can be further prevented from being deteriorated and the maintainability can be improved. In addition, since the antistatic layer 50 and the antireflection layer 60 are formed on different surfaces of the shade, the operation of forming each layer on the base material 41 of the shade 40 is easy, and productivity does not decrease.

  In the first embodiment, as shown in FIG. 3, an antireflection layer 60 may be further formed on the surface of the antistatic layer 50 on the instrument body 11 side. When formed in this manner, antistatic property, water repellency and oil repellency are imparted over the entire surface of the shade 40, so that the antifouling property can be remarkably improved.

  Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a partially enlarged sectional view showing a main part of the shade 70 of the second embodiment. In addition, about the same structure as 1st embodiment, the description is abbreviate | omitted using the same code | symbol.

  The seed 70 has a multilayer structure including a first base material 71 made of an acrylic resin and a second base material 72 made of an acrylic resin. The antistatic layer 80 is also used as an adhesive between the first base material 71 and the second base material 72. The antistatic layer 80 has a back effect as in the first embodiment.

  And the antireflection layer 60 can also be provided in the surface side of the shade 70 comprised as mentioned above. The effect by this is as substantially the same as 1st embodiment.

  According to this embodiment, since the antistatic layer 80 having the back effect is provided between the first and second base materials 71 and 72 that form the shade 70, the antistatic property is easily imparted to the entire surface of the shade 70. be able to. In addition, even when the shade 70 is used for a long period of time, weather resistance is improved because the antistatic layer 80 can prevent functional deterioration due to external factors.

  Although not shown in the drawings, as another application example of the above-described embodiment, for example, a substance having an ultraviolet absorbing function can be provided on or in the antistatic layer. According to this, the antistatic layer can be effectively protected from the ultraviolet rays from the annular fluorescent lamp 1 or the like. Moreover, you may provide the substance which has an insect repellent effect on an antistatic layer or in an antistatic layer. According to this, it is possible to prevent insects from entering the space 32 of the lighting device 1.

  Moreover, each said embodiment is an example, Comprising: If it has the effect of this invention, the composition of each member, the formation method, etc. will not be limited.

Sectional drawing which shows the lighting fixture of 1st embodiment The partially expanded sectional view which expanded the principal part of the shade of 1st embodiment. The partially expanded sectional view which expanded the principal part of the shade which is an application example of 1st embodiment. The partially expanded sectional view which expanded the principal part of the shade of 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Lighting fixture, 11 ... Appliance main body, 40, 70 ... Sade, 50 ... Antistatic layer, 60 ... Antireflection layer

Claims (4)

An instrument body in which a light source can be disposed;
A plastic shade attached to cover the lower surface of the device body;
An antistatic layer having a back effect formed on the surface of the device body side of the shade;
An anti-reflective layer having a low refractive index formed on the surface opposite to the device body side of the shade;
The lighting fixture characterized by comprising.   The lighting apparatus according to claim 1, wherein the antireflection layer has a high contact angle to moisture and oil and has water repellency and oil repellency.   The lighting apparatus according to claim 2, wherein an antireflection layer having water repellency and oil repellency is further formed on the surface of the antistatic layer on the apparatus body side.   The seed is a multilayer structure composed of a first plastic substrate and a second plastic substrate, and the antistatic layer is used as an adhesive between the first plastic substrate and the second plastic substrate. The lighting fixture according to any one of claims 1 to 3, wherein

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