JP2002107516A - Reflecting mirror and method for adjusting light distribution on reflecting mirror plane, method for forming reflecting mirror plane, and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide many kinds of reflecting mirrors which have different light distribution characteristics inexpensively. SOLUTION: A base coat layer 12 having ruggedness on the surface is formed by using the repellent phenomenon of a paint by applying a resin containing particles 13 on a base material 11 made of stainless steel, a ferro alloy or the like, coating an epoxy resin coating on a coating film after forming the coating film consisting of a silicone resin, or coating a silicone resin on a coating film consisting of a repellent powder coating. Aluminum, silver or the like are deposited on the rugged base coat layer 12 to make a reflective layer 14, and thus a reflecting mirror 10 is made. The light distribution characteristics of the reflecting mirror plane 14 are changed by changing the surface shape, formation area, formation region or the like of the base coat layer 12. Besides, various lighting fixtures 1 whose light distribution characteristics are different such as a fluorescent lamp, are provided by using this reflecting mirror 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflecting mirror, a method of adjusting the light distribution of a reflecting mirror surface, a method of forming a reflecting mirror surface, and a lighting apparatus. More specifically, the present invention relates to a method for forming a reflecting mirror and a reflecting mirror surface suitably used for lighting equipment such as a floodlight or a fluorescent lamp, and a method for adjusting light distribution on the reflecting mirror surface, and further utilizes a reflecting mirror obtained by the present invention. Lighting equipment.

[0002]

2. Description of the Related Art Lighting equipment such as floodlights and fluorescent lamps generally use a reflector in order to effectively use light from a light source. These lighting fixtures are often required to have several types of light distribution characteristics as a series. In addition, the light source generally used is not an ideal point light source, but the light-emitting part is irregular and has a certain size, so when used in combination with a simply designed spherical reflecting mirror, A light source pattern pattern (so-called color unevenness) appears on the surface, and it is difficult to obtain a preferable light distribution.

For example, in a so-called parabolic reflector, if a plurality of reflectors having light distribution characteristics are arranged and if the pattern of the light source is to be erased, the shape of the reflector is different for each light distribution characteristic. Or the physical properties of the mirror surface had to be changed. For this,
In general, the shape of the reflector is changed according to the light distribution characteristics, and the base itself made of iron, stainless steel, synthetic resin, etc. that forms the reflecting surface is processed with irregularities such as a hammer, a grain, a prism, etc. Thereafter, a reflection mirror surface (reflection film) is formed by vapor deposition of a metal such as silver or nickel.

[0004]

However, in order to mass-produce many types of reflectors having different surface shapes, molding using a mold is generally performed. Each time an expensive mold must be made. In particular, forming irregularities such as a hammer, a grain, and a prism on the surface of a mold requires a large amount of cost, which leads to an increase in the cost of lighting equipment.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide inexpensively various types of reflectors having different light distribution characteristics.

[0006]

The reflecting mirror according to the present invention comprises:
The reflective mirror surface is formed on a base coat film formed on a base material and having irregularities on the surface.

[0007] The reflecting mirror is characterized in that the base coat film having irregularities on the surface is made of a resin containing particles. At this time, it is preferable to use particles having a particle diameter that does not bury the particles in the base coat layer, and desirably, particles made of an inorganic or low volatile material are used.

[0008] In the present invention, the base coat film having irregularities on the surface can also be formed from a repellent paint.

Further, in these reflectors, the light distribution can be adjusted by the formation area and / or the formation region of the base coat layer.

The method for adjusting the light distribution of a reflecting mirror surface according to the present invention is a method for adjusting the light distribution of a reflecting mirror surface formed on a substrate, wherein the surface has irregularities between the substrate and the reflecting mirror surface. Light distribution is adjusted by interposing a base coat layer and changing the surface characteristics of the base coat layer.

At this time, the surface characteristics can be changed depending on the formation area and / or the formation region of the base coat layer.

The method of forming a reflecting mirror surface according to the present invention is a method of forming a reflecting mirror surface on a base material, the method comprising forming a base coat layer having irregularities on the surface on the base material. Thereafter, the reflecting mirror surface is formed on the base coat layer.

At this time, the base coat layer can be formed by applying a paint containing particles, or can be formed by utilizing the repelling phenomenon of the paint.

The lighting fixture of the present invention is a lighting fixture provided with a reflecting mirror surface, wherein the reflecting mirror surface is adjusted by the reflecting mirror surface according to the present invention or the light distribution adjusting method of the reflecting mirror surface according to the present invention. It is characterized by being either a reflecting mirror surface or a reflecting mirror surface formed by the reflecting mirror surface forming method according to the present invention.

[0015]

FIG. 1 is a schematic sectional view of a reflecting mirror 10 according to one embodiment of the present invention, and FIG. 2 is a schematic sectional view of a reflecting mirror 10 according to another embodiment of the present invention. FIG. 3
Is a sectional structural view of a reflecting mirror 10 according to still another embodiment of the present invention, and FIGS. 4 to 6 are reflecting mirrors 1 according to the present invention, respectively.
It is a schematic perspective view which shows the lighting fixture 1 using No. 0. Hereinafter, the present invention will be described in detail with reference to the drawings.

In a reflecting mirror 10 shown in FIG. 1, a base material 11 serving as a base of the reflecting mirror 10, a base coat layer 12 formed on the base material 11, and a reflecting layer 14 formed on the base coat layer 12 are combined. Have.

The substrate 11 is made of the same material as that conventionally used for various reflecting mirrors 10. For example, various metallic plate materials such as aluminum, iron, iron alloy, stainless steel, plastic, It is formed into a desired shape from glass, ceramic, or the like.

The base coat layer 12 functions as a base layer when forming the reflective layer 14, and a large number of irregularities are formed on the surface of the base coat layer 12. The base coat layer 12 is obtained, for example, by applying a paint containing the particles 13, and in the present invention, the base coat layer serving as a base layer instead of forming irregularities on the base material 11 itself. The light distribution characteristics of the reflective layer 14 formed on the surface of the base coat layer 12 are to be adjusted by forming irregularities such as a hammer, a grain, and a prism on the surface of the base 12.
In the present invention, the unevenness does not mean fine unevenness on the surface of the substrate 11 but means unevenness which is a large undulation appearing on the surface of the base coat layer 12.

Base coat layer 12 having irregularities on its surface
Is produced by applying a paint containing particles 13 on the base material 11, for example. The shape of the particles 13 used is preferably as spherical as possible, and those having no extreme protrusions are suitably used.

The larger the irregularities appearing on the surface of the base coat layer 12, the greater the optical effect.
It is preferable to use particles having as large a particle diameter as possible. On the other hand, when the particles 13 having a large thickness with respect to the thickness of the coating film are used, the particles 13 easily peel off from the coating film,
The coating itself becomes difficult and the base coat layer 12 cannot be formed. Further, the particles cannot be covered by the coating film, and the particles 1
When the surface of the reflective layer 3 itself appears, the smooth reflective layer 14 cannot be formed, and not only the useless diffuse reflection component increases, but also the reflectance of the reflective layer 14 (reflective mirror surface 15) decreases,
4 cannot be formed sufficiently, and may not function as the reflecting mirror 10. For this reason, the particle size is larger than the average coating thickness of the base coat layer 12 finally formed, and is 2 to 3 times the average coating thickness (generally applied to a thickness of 15 to 40 μm). In the range of about, specifically, 30 to 150 μm is used. Of course, irregularities can be formed on the surface of the base coat layer 12 without being buried in the coating film, while the surface of the particles 13 itself does not appear when the coating film is broken and the particles 13 do not fall off from the base coat layer 12. It is not limited to.

The particles 13 are compatible with the paint for forming the coating film, and are not particularly limited as long as the formation of the coating film does not cause a practical problem. The particles 13
For example, particles 13 made of an inorganic material such as silicon dioxide or glass, or various plastics such as an acrylic resin or a polyester resin are used. At this time,
The solvent gas used for forming the base coat layer 12 is generated during the formation of the reflective layer 14, which may adversely affect the formation of the reflective layer 14. Therefore, in order to reduce this influence, an inorganic material such as silicon dioxide or glass is preferably used as the particles 13.

The resin containing the particles 13 and forming the coating film of the base coat layer 12 includes the particles 13
Are not particularly limited as long as they can uniformly mix and form a smooth surface having irregularities. Also,
A material having sufficient adhesion to the base material 11 and good bonding to the reflective layer 14 is preferably used. For example, a material obtained by adding a curing agent to an epoxy resin varnish as a main component,
In addition, various known resins for forming the base coat layer 12 which have been conventionally used at the time of forming the reflective layer 14, such as an acrylic resin, a polyimide resin, and a polyamide resin, may be used. In these resins, the reflective layer 1
In order to reduce the amount of solvent gas generated at the time of formation 4, a low-volatile coating material, for example, a low-diluting coating material (a coating material having a high viscosity) that uses a small amount of a solvent such as a thinner is preferably used.

Further, the amount of the particles to be mixed in the coating material for forming the base coat layer 12 is not particularly limited. In the present invention, the compounding amount of the particles 13 is appropriately adjusted according to the desired light distribution characteristics. And is generally added in an amount of about 5 to 50% by weight. Needless to say, the amount of particles that can be used may be larger or smaller than this range as long as desired light distribution characteristics are obtained.

In this way, the coating material in which the particles 13 are blended in the resin is applied onto the base material 11 and then dried by a method such as baking treatment to produce a base coat layer 12 having an uneven surface. . At this time, the film thickness of the base coat layer 12 is such that fine irregularities on the surface of the base material 11 are eliminated and foreign matters mixed in the paint are covered with the base coat layer 12.

In the present invention, the base coat layer 1
2 to adjust the surface shape, that is, the blending amount of the particles 13;
By adjusting the particle size distribution of the particles 13, the state of unevenness formed on the surface of the base coat layer 12 can be changed, and the light distribution characteristics of the reflecting mirror surface 15 can be adjusted. For example,
The light distribution characteristics can be made wide-angle by increasing the particle diameter of the particles 13 to be used or increasing the blending amount. Alternatively, the light distribution characteristics can also be made wide-angle by performing multiple coatings instead of one coating. As described above, the particle size, compounding amount, number of coating times, and the like are experimentally determined so that the desired optical characteristics of the reflecting mirror 10 can be obtained.
Can be obtained in a simple way.

Further, the base coat layer 12 having an uneven surface is usually formed on the entire surface of the smooth base material 11.
The region where the base coat layer 12 is formed can be formed only in a partial region of the base material 11 in order to adjust the light distribution characteristics. For example, by forming the base coat layer 12 only on the surface of the base material 11 located around the rear of the light source, the light emitted behind the light source can be reflected, and the emission amount at the central portion in the emission direction can be increased. Also, for example, by forming only in the front peripheral region of the base material 11 formed in a bowl shape, the reflection efficiency at the front peripheral portion of the reflecting mirror 10 can be increased, and the spread of emitted light can be suppressed. In this way, the optical characteristics of the reflecting mirror 10 can be easily adjusted by changing the formation region of the base coat layer 12 having the unevenness on the surface.

In the present invention, the base coat layer 12 having an uneven surface can also be formed by using a so-called repelling phenomenon of a paint. Here, the repelling phenomenon refers to a phenomenon in which a smooth coating film is not formed and an irregular surface is formed in an irregular shape. The polka dots are formed using the same principle as the polka dots, and are generally established as a method for bringing out the texture of the painted surface. As the base coat layer 12 utilizing such a repelling phenomenon, for example, an epoxy resin paint is applied after forming a coating film of a silicone resin, or a silicone coating film is formed on a coating film of a repellent powder coating. It can be obtained by painting a resin. Further, as disclosed in JP-A-2-269780, a paint in which an acrylic polycarboxylic acid resin and an epoxy compound are made into an aqueous emulsion may be applied to the substrate 11.

Examples of the powder coating include those obtained by adding a curing agent to an acrylic resin or a polyester resin, and further mixing a powder such as a pigment. The term “powder” as used herein means a powder having a finer particle diameter than the above-mentioned particle diameter, and is approximately 1 μm or less, preferably several hundred nm or less.

The thickness of the base coat layer 12 utilizing such a repelling phenomenon is determined by the conventional base coat layer 12.
Generally, the thickness is about 15 to 40 μm (average film thickness).

The formation of a coating film having irregularities on the surface in this manner has been conventionally used, for example, for adjusting the texture of the surface of a building, or is a technique for matte coating. An object of the present invention is to apply such a coating method to form good unevenness in order to adjust light distribution characteristics.

In the reflecting mirror 10 of the present invention, a reflecting layer 14 is formed on the uneven base coat layer 12. The reflection layer 14 can be formed in the same manner as a conventional reflection layer. For example, as shown in FIG. 1, a reflective layer 14 formed by depositing a metal such as aluminum or silver is formed on the base coat layer 12, and a multilayer enhanced reflection film 16 is formed by vapor deposition in order to increase the reflection efficiency. A reflecting mirror surface 15 can be obtained. As the multi-layered reflective film 16, for example, a low refractive index layer 16a made of a low refractive index material typified by silicon dioxide and a high refractive index layer 16b made of a high refractive index material typified by titanium oxide are used. Those which are alternately stacked are mentioned.

As shown in FIG. 2, a reflective layer 14 formed by evaporating aluminum, silver or the like is formed on the base coat layer 12, and a clear layer 17 coated with a transparent resin is formed thereon. In addition to smoothing, the reflection layer 14 can be protected.

Further, in the reflecting mirror 10 shown in FIG. 3, a reflecting layer 14 formed by applying a resin layer having a relatively high reflectivity, for example, a melamine / polyester resin, instead of a metal deposition film, is used as the reflecting layer 14. Is formed.

The reflecting mirror 1 on which these reflecting layers 14 are formed
0 is a floodlight as shown in FIG. 4 or a ceiling recessed light as shown in FIG.
Alternatively, it is used for various lighting fixtures 1 such as a reflector plate of a fluorescent lamp as shown in FIG. 6, and after forming a base coat layer 12 having an uneven surface on the basis of the reflecting layer 14 depending on the use purpose of the lighting fixture 1. May be formed.

[0035]

EXAMPLES Next, various reflecting mirrors according to examples of the present invention were manufactured according to Table 1, and their light distribution characteristics and instruments (reflecting mirrors) were prepared.
Efficiency, maximum luminous intensity, main beam efficiency, beam range (Io /
2, Io / 10 Io / 20) are shown in Table 2. In addition, aluminum was formed into a film on the base coat layer or the base material for the reflective layer. Further, as a comparative example, one using a stainless steel substrate having no irregularities formed thereon (Comparative Example 1) and one using a substrate having irregularities formed on the surface thereof (Comparative Example 2) were used.

[0036]

[Table 1]

[0037]

[Table 2]

As can be seen from Table 2, in the reflecting mirror of this embodiment, the same isolation and main beam efficiency as those of the conventional example were obtained. Although the wide angle was narrower than that of the conventional reflector, it was much more manufacturable than the conventional reflector.

[0039]

The reflecting mirror according to the present invention has a reflecting mirror surface formed on a base coat film which is formed on a base material and has irregularities on the surface. Thus, base coat layers having different irregularities can be easily produced. Further, the light distribution characteristics can be easily adjusted by changing the formation area and / or the formation region of the base coat layer. As a result, various types of reflecting mirrors having different optical characteristics can be provided at very low cost.

The method of adjusting the light distribution of a reflecting mirror surface according to the present invention is a method of adjusting the light distribution of a reflecting mirror surface formed on a substrate, wherein the surface has irregularities between the substrate and the reflecting mirror surface. Light distribution is adjusted by interposing a base coat layer and changing the surface characteristics, formation area, and formation formation area of the base coat layer, so that light distribution can be easily performed by changing the surface of the base coat layer. Adjustments can be made. As a result, various types of reflectors having different light distribution characteristics can be easily and inexpensively manufactured.

The method for forming a reflecting mirror surface of the present invention is a method for forming a reflecting mirror surface on a substrate, comprising forming a base coat layer having irregularities on the surface on the substrate, The reflective mirror surface is formed on the base coat layer. As a result, reflecting mirror surfaces having different light distribution characteristics can be easily formed.

As described above, according to the present invention, since reflecting mirrors having different light distribution characteristics can be manufactured easily and inexpensively, various kinds of lighting equipment such as fluorescent lamps and floodlights can be provided at low cost by using the reflecting mirrors. can do.

[Brief description of the drawings]

FIG. 1 is a schematic sectional structural view of a reflecting mirror according to an embodiment of the present invention.

FIG. 2 is a schematic sectional structural view of a reflecting mirror according to another embodiment of the present invention.

FIG. 3 is a schematic sectional structural view of a reflecting mirror according to still another embodiment of the present invention.

FIG. 4 is a perspective view of a lighting fixture according to the embodiment of the present invention using the above reflector.

FIG. 5 is a perspective view of a lighting device according to another embodiment of the present invention.

FIG. 6 is a perspective view of a lighting device according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Reflecting mirror 11 Base material 12 Base coat layer with unevenness on the surface 13 Particles 14 Reflecting layer 15 Reflecting mirror surface 16 Multi-layered reflective film 17 Clear layer

Claims (12)

[Claims] 1. A reflecting mirror, wherein a reflecting mirror surface is formed on a base coat film formed on a base material and having irregularities on the surface. 2. The reflecting mirror according to claim 1, wherein the base coat film having irregularities on the surface is made of a resin containing particles. 3. The particle size of the particles is such that the particles are not buried in the base coat layer.
Reflector as described. 4. The reflecting mirror according to claim 2, wherein said particles are made of an inorganic or low volatile material. 5. The reflector according to claim 1, wherein the base coat film having irregularities on the surface is made of a repellent paint. 6. The reflector according to claim 1, wherein light distribution is adjusted by an area and / or an area in which the base coat layer is formed. 7. A method for adjusting the light distribution of a reflecting mirror surface formed on a base material, wherein a base coat layer having irregularities on the surface is interposed between the base material and the reflecting mirror surface. A light distribution adjustment method for a reflecting mirror surface, wherein light distribution is adjusted by changing surface characteristics. 8. The method according to claim 7, wherein the surface characteristics are changed according to the formation area and / or the formation area of the base coat layer. 9. A reflecting mirror surface forming method for forming a reflecting mirror surface on a base material, comprising: forming a base coat layer having irregularities on the surface on the base material; and forming the reflecting mirror surface on the base coat layer. A method of forming a reflective mirror surface. 10. The method according to claim 9, wherein the base coat layer is formed by applying a paint containing particles. 11. The method according to claim 9, wherein the base coat layer is formed by using a repelling phenomenon of a paint. 12. An illuminator provided with a reflecting mirror surface, wherein the reflecting mirror surface is the reflecting mirror surface according to any one of claims 1 to 6, or the light distribution of the reflecting mirror surface according to claim 7 or 8. A lighting apparatus, which is one of a reflecting mirror surface adjusted by a light distribution method by an adjusting method and a reflecting mirror surface formed by a reflecting mirror surface forming method according to any one of claims 9 to 11.