JP2017212058A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire that is lighter than a conventional luminaire, and whose manufacturing cost is reduced.SOLUTION: A luminaire comprises a light source part, and a luminaire body for supporting the light source part. At least a portion of the luminaire body is formed from a foamed resin. The foamed resin comprises a surface region including a surface of the foamed resin, and an inside region located inside the surface region. The bulk density of the surface region is higher than the bulk density of the inside region.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lighting fixture.

  2. Description of the Related Art Conventionally, a so-called direct-attach type base illumination that is directly attached to a ceiling surface or the like has been provided. For example, a luminaire according to Patent Document 1 has a housing recess at a substantially central portion along the longitudinal direction, and a main body provided with side plate portions integrally formed on both sides in the width direction along the housing recess. A plurality of light emitting elements as a light source, a light source portion disposed so as to cover the opening side while securing a housing space in the housing recess, and lighting control of the plurality of light emitting elements disposed in the housing space And a lighting device.

  The main body of such a so-called “reverse Fuji type” lighting fixture has two substantially triangular or trapezoidal inclined surfaces along the longitudinal direction with the top portion on the lower side, and this inclined surface reflects light. It is generally a surface. In addition, it is designed to have a size that can cover and remove the dirt on the ceiling surface that has arisen because existing lighting fixtures have been installed for a long time.

  In this way, the main body portion of the base lighting that is directly attached to the ceiling surface has a size that can form a light reflecting surface that effectively reflects light from the light source portion, and can cover and hide dirt on the ceiling surface. It is necessary to form in size. On the other hand, in consideration of mechanical strength, flame retardancy, etc., a metal material such as a steel plate is generally used for the main body of the lighting fixture, and the problem that the main body becomes heavy, There was a problem of cost.

Utility Model Registration No. 3192309

  Therefore, the present invention provides a lighting fixture that is lighter than conventional lighting fixtures and has reduced manufacturing costs.

  According to one aspect of the present invention, the apparatus includes a light source part and an instrument main body that supports the light source part, and the instrument main body is at least partly formed of a foamed resin, and the foamed resin is made of the foamed resin. There is provided a luminaire having a surface area including a surface and an inner area inside the surface area, wherein the bulk density of the surface area is higher than the bulk density of the inner area.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which was lighter than the conventional lighting fixture and suppressed manufacturing cost can be provided.

It is a perspective view of the lighting fixture which concerns on Embodiment 1 of this invention. It is a perspective view of the lighting fixture which concerns on Embodiment 1 of this invention. It is sectional drawing of the lighting fixture which concerns on Embodiment 1 of this invention. It is manufacturing process sectional drawing of the lighting fixture which concerns on Embodiment 1 of this invention. It is another manufacturing process sectional drawing of the lighting fixture which concerns on Embodiment 1 of this invention. It is sectional drawing of the lighting fixture which concerns on the modification of Embodiment 1 of this invention. It is sectional drawing of the lighting fixture which concerns on Embodiment 2 of this invention. It is an expanded sectional view in the AA line of FIG. It is a perspective view of the lighting fixture which concerns on other embodiment of this invention. It is sectional drawing of the lighting fixture shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail. However, it should be noted that the drawings are schematic and dimensional ratios and the like are different from actual ones. Therefore, specific dimensional ratios and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings. The following embodiments are exemplifications for embodying the technical idea of the present invention, and the embodiments of the present invention are described below in terms of the material, shape, structure, arrangement, etc. of the components. It is not something specific. The embodiments of the present invention can be implemented with various modifications without departing from the scope of the invention.

(Embodiment 1)
FIG.1 and FIG.2 is a perspective view of the lighting fixture which concerns on Embodiment 1 of this invention. This lighting fixture is formed in a long shape and is mainly installed on the ceiling surface. Reference numeral 1 denotes an instrument body. Reference numeral 2 denotes a light source unit, which is attached to the recess 9 of the instrument body 1 by an attachment spring 6. FIG. 1 shows a state in which the light source unit 2 is attached to the instrument body 1, and FIG. 2 shows a state in which the light source unit 2 is removed from the instrument body 1.

FIG. 3 is a cross-sectional view of the lighting fixture according to Embodiment 1 of the present invention. Specifically, FIG. 3 is a cross-sectional view taken perpendicularly at a central portion in the longitudinal direction of the lighting fixture of FIG. 1 or FIG. The instrument main body 1 is formed in a long shape, and a rectangular recess 9 for accommodating the light source unit 2 extends in the longitudinal direction of the instrument main body 1 on the side opposite to the ceiling surface (lower side in the figure). Is formed. The width direction (left-right direction in the figure) of the instrument body 1 is an inverted Fuji type that is inclined toward the ceiling as it goes outward.
The concave portion 9 has a pair of side wall portions 10 and a bottom surface portion 11 that extend in the longitudinal direction of the instrument body and face each other. An opening of the recess 9 is formed by the opening end 8 which is the end of the side wall 10 opposite to the bottom surface 11. An attachment spring 6 for attaching the light source unit 2 is disposed in the recess 9.

The light source unit 2 includes a substrate 4 on which the light emitting element 5 is mounted, an attachment member 7 that holds the substrate 4, and a cover 3 that is attached to the attachment member 7 so as to cover the light emitting element 5. The light source unit 2 is attached to the instrument body 1 by fitting the attachment member 7 and the attachment spring 6 together.

The instrument body 1 is made of a foamed resin. Here, the foamed resin is a resin containing bubbles, and for example, foamed polystyrene, foamed polystyrene, foamed styrene, foamed polypropylene, foamed polyethylene or the like can be used. Foamed resin is easy to mold and cut, inexpensive and lightweight. Therefore, by using a foamed resin for the fixture main body 1, it is possible to realize a lighting fixture that is lighter than conventional lighting fixtures and has reduced manufacturing costs.

The foamed resin of the instrument body 1 has a surface region 1a including the surface thereof and an internal region 1b located inside the surface region. When the foamed resin in the surface region 1a is compared with the foamed resin in the inner region 1b inside, the bulk density of the surface region 1a is higher than the bulk density of the inner region 1b. The bulk density is the weight (g / l) per unit volume of the foamed resin. The higher the bulk density, the heavier and harder the molded product, and the lower the bulk density, the lighter and softer the molded product. Moreover, you may form the surface area | region 1a so that it may not have a bubble.

The lower the bulk density of the foamed resin of the entire instrument body 1, the lighter the instrument body 1 becomes. However, it is preferable that the surface of the instrument body 1 has a certain degree of strength because, for example, a person's hand touches the surface of the lighting instrument when carrying it or attaching it. Therefore, the bulk density of the surface region 1a is formed higher than the bulk density of the internal region 1b.

Thus, as a method of making the bulk density of the foamed resin in the surface region 1a of the instrument main body 1 higher than the bulk density of the foamed resin in the inner region 1b inside, for example, the surface of the instrument main body 1 is externally applied. There is a method of plastic deformation by pressing or heat compressing. FIG. 4 is a cross-sectional view of the manufacturing process of the instrument body 1. First, a foamed resin (equipment main body 1) molded into a long inverted Fuji shape having a recess 9 is prepared (FIG. 4A). Next, this instrument main body 1 is installed in a metal mold | die, pressed from the up-down direction, and heat-compressed (FIG.4 (b)). Thereafter, when the instrument main body 1 is taken out from the mold, the instrument main body 1 is formed with a surface region 1a having a relatively higher bulk density than the inner region 1b (FIG. 4C). Moreover, the process of FIG.4 (b) can also be replaced with the process of heating and compressing the surface of the instrument main body 1 using a roller like FIG.

In addition, it adjusts so that the bulk density of the foamed resin of the outermost surface (exposed surface) on the surface side of the instrument body 1 may be the highest, and the bulk density may be gradually decreased from the surface region 1a toward the inner region 1b. 1 may be formed.

In the first embodiment, the entire instrument body 1 is made of foamed resin. However, as shown in FIG. 6, for example, the periphery of the recess 9 to which the light source unit 2 is attached is made of a metal such as a stronger steel plate. Alternatively, a cono-shaped metal portion may be formed, and only a region having a reflection surface formed on a side surface of the metal portion may be formed of a foamed resin.

(Embodiment 2)
FIG. 7 is a cross-sectional view of a lighting fixture according to Embodiment 2 of the present invention. Unlike the lighting fixture of the first embodiment, the lighting fixture according to the second embodiment has a plate-shaped foamed resin formed in an inverted Fuji shape to form the fixture body 1. Since the other structure is the same structure as the lighting fixture which concerns on Embodiment 1, description here is abbreviate | omitted. 8 is a cross-sectional view taken along line AA in FIG. In FIG. 8, the front surface region 1a including the surface of the plate-like foamed resin that forms the light reflection surface from the light source unit, the back surface region 1c including the back surface opposite to the front surface region, and the front surface region 1a and the back surface region 1c are sandwiched. It has an internal region 1b. Here, the bulk density of the surface region 1a and the back surface region 1c is higher than the bulk density of the internal region 1b. However, the instrument main body 1 should just raise the bulk density of the foamed resin of the surface side surface area | region 1a finally exposed outside, and is the surface which finally exposes outside and forms the reflective surface of the instrument main body 1 What is necessary is just to make the bulk density of the area | region 1a higher than the internal area | region 1b. In this case, the bulk density of the back surface region 1c and the bulk density of the internal region 1b may be equal.

(Other embodiments)
In the lighting fixtures according to Embodiments 1 and 2, the fixture body 1 has been described as a reverse Fuji type lighting fixture, but the lighting fixture according to the present invention is not limited to the reverse Fuji type lighting fixture. For example, as a lighting fixture according to another embodiment, as shown in FIGS. 9 and 10, it can be applied to a lighting fixture with a reflective shade. FIG. 9 is a perspective view of the lighting apparatus. FIG. 10 is a cross-sectional view in which a central portion in the longitudinal direction of the lighting fixture of FIG. 9 is cut vertically. For example, the plate-like foamed resin described in the lighting fixture according to Embodiment 2 of the present invention can be applied to the entire fixture body 1 or the reflective shade portion of the lighting fixture.

DESCRIPTION OF SYMBOLS 1 ... Instrument body 1a ... Front surface area 1b ... Internal area 1c ... Back surface area 2 ... Light source part 3 ... Cover 4 ... Substrate 5 ... Light emitting element 6 ... Mounting spring 7 ... Mounting member 8 ... Open end 9 ... Recess 10 ... Side wall 11 ... Bottom surface

Claims (3)

A light source unit;
An instrument body that supports the light source unit;
With
The instrument body is at least partly formed of foamed resin,
The foamed resin is
A surface region including the surface of the foamed resin;
An internal region inside the surface region;
Have
The lighting device is characterized in that a bulk density of the surface region is higher than a bulk density of the internal region. The lighting apparatus according to claim 1, wherein a bulk density of the foamed resin gradually decreases from the surface region to the inner region. A light source unit;
An instrument body that supports the light source unit,
The instrument body is partly formed of a plate-like foamed resin,
The plate-like foamed resin is
A surface region including the surface of the plate-like foamed resin;
A back surface region including a back surface facing the front surface region;
An internal region sandwiched between the front surface region and the back surface region;
Have
The luminaire characterized by the fact that the bulk density of the surface area and the back area is higher than the bulk density of the internal area.

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