JP2008078015A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire capable of obtaining easily desired light distribution characteristics while realizing thinness of the equipment. <P>SOLUTION: The luminaire is provided with an equipment main body 11 having a translucent part 11b at a surface crossing nearly at right angles an installation surface 11a, a reflector 12 having a cross-section shape to expand and gradually open toward the translucent part of the equipment main body; a point light source 13 which is arranged to locate at a focus of the reflector, a translucent body 14 which transmits light and controls the optical path. The lighting equipment radiates light from the light source near the reflector to go far away from the translucent part and controls the optical path so that the light gradually going far from the reflector may come gradually closer to the translucent part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lighting fixture that illuminates a wall surface, a ceiling surface, and the like.

  Conventionally, for example, there is a wall washer type lighting fixture that is installed on a ceiling surface and illuminates a vertical surface such as a wall surface.

  As this type of lighting fixture, a straight fluorescent lamp is used as a light source, and a lighting fixture with a reflecting mirror behind the lamp is installed in a long digging provided on the ceiling surface. What is known to perform so-called wall washer illumination over a wide vertical area is known (see, for example, Patent Document 1).

In addition, a lighting fixture in which a light source composed of a plurality of LEDs (light-emitting diodes) having different mounting angles and beam angles is attached to the irradiation opening of the fixture body is configured, and the embedded hole formed in the ceiling surface is viewed from below. There is also known one that is installed so as to be embedded and illuminates a wall surface (see, for example, Patent Document 2).
JP 2003-281910 A JP 2004-247147 A

  However, the device disclosed in Patent Document 1 uses a straight tube fluorescent lamp as a light source, so that the entire apparatus becomes large, and at present, further downsizing and thinning cannot be expected. .

  Further, in order to effectively emit the light beam of the straight tube fluorescent lamp, a light-transmitting opening for light emission is formed on the lower surface and the lower left surface.

  For this reason, light is radiated not only from the lower surface but also from the lower left surface. For example, when it is installed directly on a vertical wall surface, the fluorescent lamp enters the eyes and feels dazzling and uncomfortable.

  For this reason, this type of lighting fixture needs to be installed on a ceiling surface that has been subjected to special construction such as a long digging provided on the ceiling surface so that the lamp is not visible, and it is inferior in versatility. There is a problem, how to easily obtain a light distribution that does not become unpleasant.

  Moreover, although what is shown by patent document 2 uses LED as a light source, since the reflecting plate is abbreviate | omitted, the desired light distribution characteristic is changed by changing the attachment angle and beam angle of each LED. Therefore, there is a problem in that the structure is complicated and the mounting and arrangement of the LEDs are troublesome and the manufacturing cost is increased.

  An object of the present invention is to provide a lighting fixture capable of easily obtaining desired light distribution characteristics while reducing the thickness of the fixture.

  In order to achieve the above-mentioned object, the invention of the lighting apparatus according to claim 1 includes an instrument body having a translucent portion on a surface substantially orthogonal to the installation surface; and sequentially expanding toward the translucent portion of the instrument body. A reflector having a cross-sectional shape that is open; a point-like light source disposed substantially at the focal point of the reflector; and a translucent body that transmits light and controls the optical path; and reflects from the light source. The optical path is controlled so that light rays close to the body are radiated far from the translucent part and light rays that are sequentially farther from the reflector are sequentially brought closer to the translucent part.

  In the present invention, the instrument body is preferably composed of a metal having good thermal conductivity such as aluminum in order to increase the heat dissipation performance, but may be composed of other materials such as synthetic resin.

  The instrument body has a translucent part on a surface that is substantially orthogonal to the installation surface, but even if the entire surface that is substantially orthogonal is a translucent part, or part of it is a translucent part, the light beam is further transmitted. A part of the translucent part may be formed over the other surface to such an extent that it does not become dazzling when entering the eyes.

  The translucent part may be an open wide opening, an opening formed by a large number of through holes, or a translucent body such as a synthetic resin or glass, partially or entirely. It may be occluded.

  The shape of the appliance main body is preferably a long shape, but may be a rectangle, a polygon, a circle, or the like in accordance with a lighting application such as a wall surface.

  For example, the reflector preferably has a cross-sectional shape that forms a parabolic curve, but all cross-sectional shapes that expand and open sequentially toward the translucent part of the instrument body, such as a substantially parabolic curve including an ellipse, are allowed. Is done.

  Even if the reflector is made of a metal plate such as stainless steel or aluminum, for example, a synthetic resin material such as PBT (polybutylene terephthalate) is coated with a metal film such as aluminum, or coated with an aluminum foil or the like. A mirror surface may be used.

  The point light source is a semiconductor light emitting device having no filament, and for example, a light emitting diode or a semiconductor laser is allowed.

  Furthermore, not only a semiconductor light emitting element but also an incandescent light bulb such as a small light bulb or a halogen light bulb, and all light sources forming a point light source are allowed.

  The light-transmitting body that transmits light and controls the optical path may be formed of a thick plate material for refracting light, such as a synthetic resin such as a thick transparent acrylic resin or transparent glass, or a light source You may be comprised with the lens etc. which control light to a substantially linear direction.

  The invention of the lighting fixture according to claim 2 is a fixture main body having a translucent portion on a surface substantially orthogonal to the installation surface; and a reflection having a cross-sectional shape that is sequentially expanded and opened toward the translucent portion of the fixture main body. A point-like light source disposed substantially at the focal point of the reflector; and provided in the light-transmitting portion so that the light beam from the light source is reflected by the reflector and the reflected light beam is transmitted to control the optical path. A light beam that is close to the reflector from the light source and radiates away from the light-transmitting portion, and the light rays that are sequentially farther from the reflector are sequentially brought closer to the light-transmitting portion by the reflector and the light-transmitting member. The optical path is controlled to be as follows.

  According to a third aspect of the present invention, in the luminaire according to the second aspect, the translucent body is formed with a control unit having a different refractive index of light.

  The invention of the lighting fixture according to claim 4 is a fixture main body having a translucent portion on a surface substantially orthogonal to the installation surface; and a reflector having a substantially parabolic cross-sectional shape that opens toward the translucent portion of the fixture main body. A plurality of point-like light sources arranged to face the reflector that is sequentially expanded; and a transparent lens that transmits a light beam from the light source and controls the optical path in a substantially linear direction to emit the light toward the reflector. A light body that emits light rays close to the reflector from a plurality of light sources by the light-transmitting body and the reflector to the far side from the light-transmitting portion, and sequentially moves away from the reflector. The optical path is controlled so as to be close to the light transmitting part.

  According to a fifth aspect of the present invention, in the lighting apparatus according to the fourth aspect, the plurality of light sources have a large light amount of the light source that radiates far from the translucent part, and sequentially approach the translucent part. The amount of light emitted from the light source is gradually reduced to be small.

  A sixth aspect of the present invention is the lighting fixture according to any one of the first to fifth aspects, wherein the light source is formed of a light emitting diode.

  According to the first aspect of the present invention, the light source is constituted by a point-like light source, the light beam close to the reflector is emitted from the light source to the far side from the light transmitting part, and the light rays that are sequentially farther from the reflector are sequentially near the light transmitting part. The optical path was controlled so that

  For this reason, it becomes possible to employ | adopt small light sources, such as a light emitting diode, as a light source, and can provide the lighting fixture aiming at thickness reduction.

  The instrument body has a translucent part on a surface substantially perpendicular to the installation surface, and the reflector has a cross-sectional shape that is sequentially expanded and opened toward the translucent part of the instrument body. Since it has a simple configuration in which the light source is disposed substantially at the focal point of the reflector, it is possible to provide a lighting fixture that can easily obtain desired light distribution characteristics while reducing the thickness of the fixture.

  According to the second aspect of the present invention, the light source is constituted by a point light source, the light beam from the light source is reflected by the reflector, and the light beam transmitted from the light source is transmitted through the reflected light beam to control the optical path. Since it is configured to include a light body, it is possible to employ a small light source such as a light emitting diode as a light source, and further, it is not necessary to provide a light transmitting body such as a lens for controlling the optical path for each light source, The configuration of the light source portion can be simplified, and a lighting fixture capable of easily obtaining desired light distribution characteristics while further reducing the thickness of the fixture can be provided.

  According to the third aspect of the present invention, since the light transmitting member forms the control unit having a different refractive index of light, the light source emits a light beam close to the reflecting member from the light transmitting member to the far side, and gradually becomes farther from the reflecting member. It is possible to easily obtain a desired light distribution characteristic while reducing the thickness of the instrument by surely controlling the optical path so that the light beams are sequentially brought close to the translucent part.

  According to the invention of claim 4, the light source is composed of a plurality of point-like light sources, and the light transmitting body is formed of a lens that transmits the light from the light source and emits the light toward the reflector by controlling the optical path in a substantially linear direction. Therefore, the light path from the light source to the reflector is radiated far away from the translucent part, and the light path is sequentially controlled so that the light gradually distant from the reflector is sequentially near the translucent part. It is possible to easily obtain desired light distribution characteristics while reducing the thickness of the instrument.

  According to the invention of claim 5, the plurality of light sources increase the light amount of the light source that radiates far from the light transmitting portion, and sequentially decrease the light amount of the light source that radiates so as to be closer to the light transmitting portion. The light path from the light source to the reflector is radiated far away from the translucent part, and the light path is further controlled more securely so that the light rays that are sequentially farther from the reflector are sequentially closer to the translucent part. The desired light distribution characteristics can be easily obtained while reducing the thickness of the instrument.

  According to the sixth aspect of the present invention, since the light source is composed of a light emitting diode, it is possible to provide a lighting apparatus that is further reduced in thickness.

  Hereinafter, embodiments of the lighting apparatus according to the present invention will be described.

  1 to 3 show a lighting apparatus according to a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view, FIG. 2 is a front sectional view taken along line AA of FIG. 1, and FIG. It is a longitudinal cross-sectional view which shows the state which installed in the ceiling surface.

  The lighting fixture of the present embodiment is configured as a wall washer type lighting fixture used in a store or the like.

  As shown in FIGS. 1 to 2, the lighting fixture 10 includes a fixture main body 11, a reflector 12, a light source 13, and a translucent body 14.

  Hereinafter, as illustrated in FIG. 3, the lighting fixture 10 is installed on the ceiling surface X, the light source 13 is on, and the reflector 12 is on the bottom.

  The instrument main body 11 has a function of a heat sink, is a metal having good thermal conductivity such as aluminum, is configured to have a long and long shape with a substantially T-shaped cross section, and a flat upper surface. Then, the installation surface 11a is formed, and one side (right side in FIG. 1) is opened to form the light transmitting portion 11b.

  A light source arrangement portion 11c is formed on the back side of the installation surface 11a, and a light emitting diode 13 (hereinafter referred to as “LED”) as a light source is arranged.

  The LED 13 is a point light source, and is composed of one or a plurality of white LEDs in the present embodiment. Each LED is mounted on the wiring board 13a and is composed of a metal having good thermal conductivity such as aluminum. Together with the fixture main body 11 made of the heat radiating plate, it is firmly fixed and fixed to the light source arrangement portion 11c by fixing means such as screws.

  The six LEDs 13 are arranged at equal intervals in the longitudinal direction of the long instrument body 11 to constitute a line-shaped module (FIG. 2). The six LEDs are arranged at the same angle.

  A plurality of heat dissipating fins 11e are formed on the other side wall portion 11d of the instrument main body 11 so as to protrude integrally outward.

  The reflector 12 is made of an opaque synthetic resin such as PBT (polybutylene terephthalate), and a reflecting surface 12a having a cross-sectional shape having a parabolic curve is integrally formed on the upper surface thereof at the time of resin molding, and the reflecting surface 12a is made of aluminum. The metal film is coated to finish the mirror surface.

The reflector 12 is accommodated in the instrument body 11 with the reflecting surface 12a facing upward. The central portion of the LED 13 which is a point light source is positioned substantially at the focal point f of the reflector 12, and the reflecting surface 12 a having a parabolic curved cross section is directed toward the light transmitting portion 11 b of the instrument body 11. It is installed so that it is opened and opened sequentially.
In the present embodiment, the reflecting surface 12a is formed to be slightly inclined toward the open end so as to narrow gradually.

  The lower surface portion 12b of the reflector 12 is formed so as to be flush with the lower end surface of the side wall portion 11d of the instrument main body 1 so as to also serve as a cover case serving as a decorative name plate on the lower surface of the instrument main body 11.

  The translucent body 14 is made of a thick synthetic resin such as colorless and transparent polycarbonate, and is formed into a long L-shaped cross section, and the open portion of the inverted L-shaped portion is a translucent portion 11b of the instrument body 11. The light-transmitting part is attached so that it is positioned so as to oppose the light-transmitting part.

  In other words, the inverted L-shaped tip portion 14a of the translucent body 14 is in contact with the upper edge of the translucent portion 11b of the instrument body 11, and the groove 14b is formed at the lower end portion to form the open portion of the reflector 12. The protrusion 12d is fitted and fixed.

  The translucent body 14 is formed so that the tip end portion 14a thereof is flush with the installation surface 11a of the instrument main body 11 and the lower end portion thereof is flush with the lower surface portion 12c of the reflector 12. 11 It is configured so that the upper and side cover cases are also used.

  Note that both end portions of the instrument body 11 are closed with end plates 11f and 11f made of opaque synthetic resin (FIG. 2).

  Thereby, the instrument main body 11 which has the translucent part 11b which provided the translucent body 14 in the surface substantially orthogonal to the installation surface 11a is comprised.

  In the inverted L-shaped connecting portion of the translucent body 14, the inner surface is formed in a shape that is inclined to the upper right in FIG. 1 and has a substantially trapezoidal cross section, and the refractive index of the transmitted light is different from that of the other portions. The control unit 14c is integrally formed.

  The reflector 12, the translucent body 14, and the end plates 11f and 11f are fixed to the instrument body 11 using fixing means such as screws or a heat resistant adhesive such as silicone resin.

  Note that a power line (not shown) is connected to each of the LEDs 13 configured as described above, and the power line is led out through the instrument body 11 and connected to a separately configured power supply unit (not shown).

  According to the above, in the instrument main body 11 having a long shape, which is about 300 mm in the present embodiment and having the light transmitting portion 11b on the surface substantially orthogonal to the installation surface 11a, A small and thin lighting fixture 10 having a horizontally long box shape in which the reflectors 12 and the like are housed is configured.

  As shown in FIG. 3, the lighting fixture 10 configured as described above is provided with a separate attachment such as a screw in a state where the installation surface 11 a of the fixture body 11 is in contact with the ceiling surface on one end side of the ceiling surface X. It is installed directly by fixing by.

  Thereby, the translucent part 11b of the instrument body 11 opens in a direction substantially parallel to the ceiling surface and toward the wide ceiling surface, and the lower surface of the reflector 12 serving also as a cover case on the lower surface of the instrument body 11 is provided. The lower surface portion 12c faces, and the LED 13 and the light transmitting portion 11b that are light sources are not visible from below.

  In addition, when installing on a ceiling surface, since the desired light distribution characteristic shown below is already set as an instrument, it installs without performing the operation | work which adjusts the installation angle, such as an LED module.

  The light distribution characteristics of the lighting fixture configured as described above will be described with reference to FIG.

  When power is supplied to each LED 13 from a separate power supply unit to the lighting fixture 10 via a power supply line, the LED 13 that is a point light source emits light, and light rays are emitted in one direction, mainly downward in this embodiment. Radiated.

  The light beam emitted from the LED 13 is reflected by the reflecting surface 12 a of the reflector 12, passes through the light transmitting body 14, and is emitted from the light transmitting portion 11 b of the instrument body 11 toward the wide ceiling surface X.

  That is, the light beam group a close to the reflector 12 is reflected by the inner part of the reflecting surface 12a having a parabolic curve and is refracted by the control unit 14c having a substantially trapezoidal shape. Radiated from the portion 11b toward the far side.

  Further, the light beam group b far from the reflector 12 is reflected on the open end side of the reflecting surface 12a, is refracted by the translucent body 14 including the control unit 14c, and is emitted toward the side near the translucent part 11b. The

  At this time, the light beam traveling toward the installation surface 11a is refracted by the control unit 14c and emitted to a portion closer to the light transmitting unit 11b.

  Further, the light beam group c located at a substantially intermediate distance from the reflector 12 is reflected by a substantially intermediate portion of the reflecting surface 12a, and is mainly refracted by the control unit 14c of the translucent body 14 so as to be closer to the translucent part 11b. Radiated toward the middle part of the distance.

  Thereby, the light beams emitted from the respective LEDs 13 radiate the light beam group a close to the reflector 12 away from the light transmitting portion 11b by the reflector 12 and the light transmitting body 14, and the light beam groups sequentially distant from the reflector 12. Desired light distribution characteristics in which the optical path is controlled so that b and c are sequentially close to the light transmitting portion 11b are configured.

  This light distribution characteristic has a cross-sectional shape in which a translucent part 11b is provided on a surface substantially orthogonal to the installation surface 11a of the instrument body 11, and the reflector 12 is sequentially expanded and opened toward the translucent part of the instrument body. With a simple configuration in which each LED 13 is positioned at the focal point f of the reflector, it is possible to easily obtain desired light distribution characteristics while reducing the thickness of the instrument.

  Due to this light distribution characteristic, when used as wall washer illumination, it is possible to accurately illuminate a necessary illumination area such as a place where it is used and a necessary place.

  Moreover, the illumination state can irradiate the light of LED with a small amount of light to a necessary illumination area of a wide ceiling without waste, and uniform wall washer illumination without uneven illuminance and uneven color can be performed.

  The LED 13 that is the light source can be covered with the reflector 12 and the instrument body, and the LED 13 that is the light source and the translucent portion 11b are installed from the lower side so that the light does not feel dazzling.

  On the other hand, the heat generated from each LED 13 at the time of lighting is transmitted from the LED substrate 13a to the fixture body 11 made of aluminum and radiated to the outside. At this time, since the plurality of heat dissipating fins 11e are integrally formed on the side wall portion 11d of the instrument main body 11, the heat dissipating area is widened and heat is more effectively dissipated.

  In addition, the lighting fixture 10 of a present Example can also be installed in the vertical wall surface Y as shown in FIG. 6 of Example 2 mentioned later, and can also perform wall washer illumination to a wall surface.

  In this case, the instrument body 11 is installed directly on the wall surface Y so that the translucent part 11b of the instrument body 11 faces downward.

  Thereby, similarly to the installation on the ceiling surface X, the vertical wall surface Y can be effectively illuminated.

  Also in this case, the luminaire 10 is thinned and is installed in a state in which the LED 13 and the translucent portion 11b that are light sources cannot be seen from below, so that glare is not felt.

  Thereby, the luminaire 10 can be directly attached to the ceiling surface X and the wall surface Y without any special work such as digging, and can be freely installed.

  According to this embodiment, a light source can be comprised by LED13 which is a point light source, and the small and thin lighting fixture can be provided.

  Furthermore, since the light transmitting portion 11b is not provided with a light transmitting body composed of a lens or the like for controlling the optical path of each LED, but the light transmitting portion 11b is provided with a single light transmitting body 14, thereby simplifying the configuration of the light source portion. Therefore, it is possible to further reduce the size and thickness.

  A translucent portion 11b is provided on a surface substantially orthogonal to the installation surface 11a of the instrument main body 11, and a cross-sectional shape is formed in which the reflector 12 is sequentially expanded and opened toward the translucent portion of the instrument main body. With a simple configuration positioned at the focal point f, desired light distribution characteristics can be easily obtained while thinning the instrument.

  In addition, since the overall fixture is thinned, it is possible to provide a small lighting fixture that is free from installation space problems and design restrictions.

  Further, a light ray that is close to the reflector 12 is emitted from the LED 13 to the far side from the translucent part 11b by the reflector 12 and the translucent body 14 that transmits the reflected light ray and controls the optical path, and the light ray that gradually becomes farther from the reflector 12 Since the light path is controlled so as to be close to the light-transmitting portion 11b in sequence, the light distribution is controlled by the fixture itself. When used as wall washer lighting, Lighting can be performed. Moreover, the illumination state can provide uniform wall washer illumination, etc. without illuminance unevenness and color unevenness.

  Moreover, when installing on a ceiling, a wall surface, etc., the operation | work which adjusts an installation angle can also become unnecessary and can also make installation work easy.

  The instrument body 11 has a translucent portion 11b on a surface substantially orthogonal to the installation surface 11a, and the reflector 12 has a cross-sectional shape that is sequentially expanded and opened toward the translucent portion 11b of the instrument body 11. Since the LED 13 is arranged substantially at the focal point f of the reflector 12, the LED can be covered with the reflector 12 and the instrument body 11, and glare can be prevented.

  For this reason, the installation place of the lighting fixture 10 is not restrict | limited to the ceiling surface etc. which gave special construction, It can install in a free position and can provide the lighting fixture excellent in versatility. Moreover, it can be directly attached to the ceiling or wall surface.

  In particular, in accordance with the downsizing and thinning of the instrument itself as described above, even a small space that could not be installed conventionally can be installed, and versatility can be further increased.

Moreover, since LED13 which is a point-like light source was set as the structure arrange | positioned substantially in the focus f of the reflector 12, the reflector 12 can be located in the light emission part front surface of LED13, and LED of a light quantity with few The amount of light can be used without loss, and the indirect light reflected by the reflecting plate can be obtained, so that uniform wall washer illumination without illuminance unevenness and color unevenness can be further provided.
In the present embodiment, the reflecting surface 12a is formed to be slightly inclined toward the open end and conversely narrow so that the portion close to the light transmitting portion 11b of the lighting fixture is mainly supplemented together with the control portion 14c. Further, it is possible to provide uniform wall washer illumination and the like free from illuminance unevenness and color unevenness.

  Further, the LED 13 can be covered with the reflector 12 and the instrument body 11, and the LED itself, and further the LED lighting wiring board 13a can be covered, and can be protected from dust and the like.

  Moreover, unlike the conventional case, it is not necessary to obtain different light distribution characteristics by changing the mounting angle and beam angle of each LED, the structure is simplified and does not become complicated, and the mounting and mounting of the LED is easy and manufactured. There is no fear that the cost will increase, and a lighting apparatus that is advantageous in terms of cost can be provided.

  Moreover, effective heat dissipation is performed by the radiation fins 11e, and the temperature rise of each LED 13 is suppressed, so that it is possible to prevent a decrease in luminous efficiency and a decrease in luminous flux, resulting in a light color shift. The display can be illuminated with a desired color rendering effect. At the same time, since the temperature rise of the LED 13 is suppressed, as a result, more power can be input to the LED, and brighter illumination can be performed.

  Since the reflector 12 and the translucent body 14 are also used as a cover case, only the instrument body 11 can be made of expensive aluminum, and the others can be made of relatively inexpensive synthetic resin, which is inexpensive. Luminaires can be provided.

  In the present embodiment, each LED 13 is configured with a white LED, but may be configured with an LED that emits light in red (R), green (G), blue (B), or the like, depending on the use of the lighting fixture. Or these may be mixed and used.

  The reflector 12 is formed by integrally forming the reflecting surface 12a at the time of resin molding and coating the reflecting surface 12a with a metal film of aluminum to finish it in a mirror surface state. Alternatively, heat may be transmitted from the wiring board 13a to the die-cast reflector.

  Furthermore, you may comprise the reflector 12 by pressing a metal plate, such as stainless steel and aluminum.

  The surface of the inner surface portion of the LED wiring board 13a or the instrument body 11 may be processed into a mirror surface to reflect light leaking to the wiring board side or the like to further reduce the light loss.

  The reflector 12 and the translucent body 14 are fixed to the instrument main body 11 by fixing means such as screws or heat resistance such as silicone resin by using an adhesive. The repair may be easily performed.

  Although the power supply unit is configured separately, it may be configured integrally with the instrument body 11.

  4-7 shows the lighting fixture of 2nd Embodiment of this invention, FIG. 4 is a longitudinal cross-sectional view, FIG. 5 is sectional drawing of the front view which follows the BB line of FIG. 4, FIG. FIG. 7 is a front sectional view showing a modification.

  4 to 7, the same parts as those in FIGS. 1 to 3 of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The lighting fixture of the present embodiment is configured as a wall washer type lighting fixture 10 used in a store or the like as in the first embodiment, and is installed on a vertical wall surface Y. A plurality of LEDs 13 that are point light sources are provided. The lens 14 'is arranged in a vertical and horizontal matrix so as to face the reflector 12 that is sequentially expanded, and a light transmitting body for controlling the optical path is provided on the front surface of the LED. Controlling in a substantially linear direction and radiating toward the reflector 12, among the light rays radiated from the plurality of LEDs by the reflector, the light rays close to the reflector 12 are radiated far from the light transmitting portion 11 b, and the reflector 12. The optical path is controlled so that light beams that are sequentially farther from the light source sequentially become closer to the light transmitting portion 11b, and the desired light distribution characteristic can be easily obtained while reducing the thickness of the instrument.

  Hereinafter, as illustrated in FIG. 6, the lighting apparatus 10 is installed on the vertical wall surface Y, the light source 13 is on, and the translucent portion 11 b is on the bottom.

  The instrument body 11 is configured as a long box made of a metal having good thermal conductivity, such as aluminum, on one side serving as the installation surface 11a, and the other surface made of the same metal or opaque synthetic resin. As in the first embodiment, the lighting fixture 10 is formed in a horizontally long box shape and is small and thin.

  A light transmitting portion 11b is formed by opening a surface substantially orthogonal to the installation surface 11a, that is, a lower surface of the box. The light transmitting part may be closed with glass or a synthetic resin such as transparent polycarbonate.

  The reflector 12 is made of a metal plate such as stainless steel, and is positioned so that a reflecting surface 12a having a parabolic curved cross section is gradually expanded and opened toward the light transmitting portion 11b of the instrument body 11. Store and install.

  The plurality of LEDs 13 serving as point light sources are arranged on one side of the instrument body 11, that is, on the back side of the installation surface 11a made of a metal having good thermal conductivity such as aluminum via the wiring board 13a.

  That is, the LED 13A is disposed at the position of the wiring board 13a facing the upper part of the reflector 12 that is sequentially expanded, the LED 13B is disposed at a position facing the intermediate part, and the LED 13C is disposed at a position facing the lower part in the vertical direction. Six LEDs 13 </ b> A, 13 </ b> B, and 13 </ b> C are arranged horizontally along the longitudinal direction of the long instrument body 11.

  As a result, as shown in FIG. 5, a total of 18 LEDs are arranged at substantially equal intervals in a matrix of three rows A, B, and C in rows and six columns. Note that the arrangement angles of the 18 LEDs are all the same.

  The translucent body 14 is configured by providing a narrow-angle lens 14 ′ in front of each of the 18 LEDs.

  When the lighting fixture 10 configured as above is turned on, as shown in FIG. 6, the light emitted from each LED is transmitted through the narrow-angle lens 14 ′ and refracted in a substantially horizontal linear direction, and is controlled. Radiated toward the reflector 12.

  Thereby, the light ray group a close to the reflector 12 radiated from each LED 13A in the upper row A is reflected by the portion above the reflecting surface 12a having a parabolic curved cross section, and is far from the light transmitting portion 11b. Radiated toward

  In addition, the light ray group b far from the reflector 12 emitted from each LED 13C in the lower row C is reflected on the open end side of the reflecting surface 12a and is emitted toward the side closer to the light transmitting part 11b.

  Further, a light beam group c located at a substantially intermediate distance from the reflector 12 radiated from each LED 13B in the intermediate row B is reflected by a substantially intermediate portion of the reflecting surface 12a, and is closer to the far side and far from the light transmitting portion 11b. Is emitted toward the substantially middle part of the.

  Thereby, among the light rays radiated from the respective LEDs by the lens 14 ′ and the reflector 12, a light ray group “a” close to the reflector 12 is emitted far away from the light transmitting portion 11 b, and the light ray group “b” gradually distant from the reflector 12. , C are sequentially arranged in the vicinity of the light transmitting portion 11b, so that a desired light distribution characteristic in which the optical path is controlled is configured.

  This light distribution characteristic has a cross-sectional shape in which a translucent part 11b is provided on a surface substantially orthogonal to the installation surface 11a of the instrument body 11, and the reflector 12 is sequentially expanded and opened toward the translucent part of the instrument body. The desired light distribution characteristics can be easily obtained while reducing the thickness of the instrument with a simple configuration that provides a lens that transmits the light from the LED 13 and emits the light toward the reflector by controlling the optical path in a substantially linear direction. Can do.

  Thereby, the lighting fixture 10 which has a light distribution characteristic substantially the same as Example 1 mentioned above is comprised, and when using it as wall washer lighting, the exact illumination with respect to required illumination areas, such as a place to be used and a required place, etc. Can be done. Moreover, the illumination state can perform uniform wall washer illumination without illuminance unevenness, color unevenness, and the like on a necessary illumination area of a wide wall surface.

  According to the present embodiment, since each LED as a light source is arranged in a matrix, it is possible to adjust the irradiation angle and light quantity of the LED for each row, and set more reliable light distribution characteristics. Therefore, it is possible to accurately illuminate a necessary illumination area, and it is possible to perform uniform wall washer illumination without uneven illuminance and uneven color.

  Further, adjustment may be made by changing the light amount for each of A, B, and C rows. For example, the light amount of the A row is large, the light amount of the B row is medium, the light amount of the C row is small, that is, the light amount of the LED that illuminates a portion that is far from the installation position of the instrument to the irradiation surface is large. By sequentially reducing the amount of light emitted from the light source so as to be close to the light portion, the irradiated surface can be illuminated more uniformly.

  Furthermore, according to the present embodiment, since each LED is provided in a matrix shape, various color rendering properties can be obtained by combining LEDs emitting red (R), green (G), and blue (B). It is also possible to perform wall washer illumination.

  For example, as shown in FIG. 7, a red light emitting LED 13R is arranged in the A row, a green light emitting LED 13G is arranged in the B row, and a blue light emitting LED 13B ′ is arranged in the C row so that the light quantity of the LEDs in each row can be adjusted manually or automatically. .

  For example, normally, the amount of light of each LED is the same, white light is emitted, and the wall surface is illuminated in white.

  When it is desired to perform warm illumination in winter or the like, the light amount is adjusted to increase the light amount of the red light emitting LEDs 13R in the A row. As a result, it is possible to illuminate a reddish and warm portion in a portion where the distance from the installation position of the instrument to the irradiation surface is far from the wall surface.

  When performing cool lighting such as in summer, the amount of light emitted from the blue light emitting LED 13B 'in row C is increased, and the portion where the distance from the installation position of the device to the irradiation surface is close to the wall surface is bluish. Use proper lighting.

  In the fresh green season, the amount of light emitted from the green light-emitting LEDs 13G in the B row can be increased so that a substantially middle portion of the wall surface has a greenish illumination.

  Further, in the above, LEDs that emit light in red (R), green (G), and blue (B) are arranged for each of the A, B, and C3 rows, and illumination that gives color rendering properties in the vertical direction of the wall surface is performed. However, the LED that emits light in red (R), green (G), and blue (B) is arranged for each of the six rows so as to perform illumination with color rendering in the horizontal direction of the wall surface. Also good.

  In addition, LEDs that emit red (R), green (G), and blue (B) light are randomly arranged so that the color of the entire wall changes, and the entire wall surface has color rendering properties in both the horizontal and vertical directions. You may make it perform the illumination provided.

  In addition, the lighting fixture of a present Example can also be installed and used for the ceiling surface X similarly to FIG. 3 of Example 1, and there can exist an effect similar to the above.

  As described above, other configurations, operations, effects, and modifications of the present embodiment are the same as those of the first embodiment.

  The lighting fixtures of the above embodiments are configured as wall washer type lighting fixtures used in stores and the like, but may be configured as wall washer type lighting fixtures for various indoor and outdoor use such as home use, facility use, and business use. . Furthermore, you may make it comprise the horizont light etc. which irradiate a horizont surface in a stage, a studio, etc.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

The longitudinal cross-sectional view which shows the lighting fixture of 1st Embodiment of this invention. Sectional drawing of the front view which similarly follows the AA line of FIG. Similarly, the longitudinal cross-sectional view which shows the state which installed the lighting fixture in the ceiling surface. The longitudinal cross-sectional view which shows the lighting fixture of 2nd Embodiment of this invention. Sectional drawing of the front view which similarly follows the BB line of FIG. Similarly, the longitudinal cross-sectional view which shows the state which installed the lighting fixture in the wall surface. Sectional drawing of the front view which similarly shows the modification of a lighting fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Appliance main body 11a Installation surface 11b Translucent part 12 Reflector 13 Light source 14 Translucent member f Focus

Claims (6)

An instrument body having a translucent portion on a surface substantially orthogonal to the installation surface;
A reflector having a cross-sectional shape that expands and opens sequentially toward the translucent part of the instrument body;
A point-like light source disposed substantially at the focal point of the reflector;
A translucent material that transmits light and controls the optical path;
Characterized in that the light path from the light source to the reflector is radiated from the translucent part to the distance, and the light path is controlled so that the light rays that are sequentially farther from the reflector are sequentially near the translucent part. Lighting equipment to do. An instrument body having a translucent portion on a surface substantially orthogonal to the installation surface;
A reflector having a cross-sectional shape that expands and opens sequentially toward the translucent part of the instrument body;
A point-like light source disposed substantially at the focal point of the reflector;
A translucent body provided in the translucent section so as to reflect the light beam from the light source by the reflector and transmit the reflected light beam to control the optical path;
With the reflector and translucent body, the light path from the light source to the reflector is radiated away from the translucent part, and the optical path is controlled so that the light rays that are sequentially farther from the reflector are sequentially closer to the translucent part. A luminaire characterized by that. The lighting device according to claim 2, wherein the translucent body includes a control unit having a different light refractive index. An instrument body having a translucent portion on a surface substantially orthogonal to the installation surface;
A reflector having a substantially parabolic cross-sectional shape that opens toward the translucent part of the instrument body;
A plurality of point-like light sources arranged opposite to the reflectors that are sequentially expanded;
A translucent body comprising a lens that transmits light rays from the light source and emits the light path toward the reflector by controlling the optical path in a substantially linear direction;
Among the light rays emitted from the plurality of light sources by the light transmitting body and the reflector, the light rays that are close to the reflector are radiated far from the light transmitting portion, and the light rays that are sequentially farther from the reflector are sequentially emitted from the light transmitting portion. A lighting apparatus characterized in that the optical path is controlled to be close. The plurality of light sources are configured to increase the light amount of the light source radiating far from the light transmitting portion and sequentially decrease the light amount of the light source radiated so as to be closer to the light transmitting portion. The lighting fixture according to claim 4. The lighting apparatus according to claim 1, wherein the light source includes a light emitting diode.

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