JP2017111866A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of enhancing strength of a light source unit.SOLUTION: A lighting fixture 10 includes a fixture body 12 and a light source unit 13. The fixture body 12 has an opening 23 on its bottom surface. The light source unit 13 includes a frame body 30, a shade 31, a reflection body 32 and a light source. The frame body 30 is attached to a peripheral portion at an opening 23 side of the fixture body 12, and has a pair of wall portions 43 erected so as to face each other inside. The shade 31 includes: a pair of first plate portions 47 being individually disposed outside the pair of wall portions 43 and supported at frame body 30 sides; and a shade portion 46 being provided at upper sides of the pair of first plate portions 47 and covering an upper side of the opening 23 of the fixture body 12. The reflection body 32 includes a pair of second plate portions 52 being disposed outside the pair of first plate portions 47 and provided at the frame body 30 sides, and is housed in the fixture body 12. The light source is provided on the reflection body 32 and emits light to an upper surface side of the shade 31.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a lighting fixture in which a light source unit is mounted on a fixture body.

  2. Description of the Related Art Conventionally, for example, there is a lighting fixture in which a light source unit is inserted and attached to an appliance body installed on a ceiling, for example, through an opening provided on the lower surface of the appliance body.

  The light source unit includes a frame attached to the peripheral portion on the opening side of the instrument body, a shade attached to the inside of the frame, a reflector provided on the frame so as to cover the upper surface side of the shade, and the A light source attached to the reflector is integrally provided, and the light source is attached to the instrument body by an attachment spring attached to the frame.

  In the light source unit integrated in this way, a load on the frame body and the like attached to the instrument main body is increased, and the frame body and the like are easily deformed.

JP 2014-232713 A

  The problem to be solved by the present invention is to provide a lighting fixture capable of increasing the strength of the light source unit.

  The lighting fixture of the embodiment includes a fixture main body and a light source unit. The instrument body has an opening on the lower surface. The light source unit includes a frame, a shade, a reflector, and a light source. The frame has a pair of wall portions that are attached to the peripheral portion on the opening side of the instrument main body and are erected so as to face each other. The shades are disposed on the outer sides of the pair of wall portions and supported on the frame body side, and are provided above the pair of first plate portions and above the opening of the instrument body. Has a shade part covering. The reflector has a pair of second plate portions that are disposed outside the pair of first plate portions and provided on the frame body side, and is accommodated in the instrument body. The light source is provided on the reflector and irradiates light on the upper surface side of the shade.

  According to the present invention, the strength of the light source unit can be expected to be increased by supporting the shade and the reflector with a predetermined structure on the frame body side.

It is sectional drawing of a part of 1st direction of the lighting fixture which shows one Embodiment. It is sectional drawing of a part of 2nd direction of a lighting fixture same as the above. It is sectional drawing of the 1st direction of a lighting fixture same as the above. It is sectional drawing of the 2nd direction of a lighting fixture same as the above. It is a disassembled perspective view of the fixture main body and light source unit of a lighting fixture same as the above. It is a disassembled perspective view of the light source unit of a lighting fixture same as the above.

  Hereinafter, an embodiment will be described with reference to FIGS. 1 to 6.

  As shown in FIGS. 3 to 5, the lighting fixture 10 is, for example, a ceiling embedded in an embedding port 11a (see FIGS. 1 and 2) formed in a ceiling surface 11 (see FIGS. 1 and 2). Recessed lighting fixture.

  The lighting fixture 10 includes a fixture main body 12 installed on the ceiling surface 11, and a light source unit 13 that is detachably attached to the fixture main body 12. A power supply device 14, a control device 15, and a terminal block 16 are attached to the instrument body 12.

  The instrument body 12 is formed in a quadrangular box shape, and the top plate 20, a pair of side plates 21 facing each other in the first direction a along one side of the top plate 20, and the first direction a. It has a pair of side plates 22 facing each other in the second direction b perpendicular to each other. A square-shaped opening 23 is formed on the lower surface of the instrument main body 12, and an accommodating portion 24 for accommodating the light source unit 13 is formed inside the instrument main body 12.

  The top plate 20 is formed with a mounting hole 25 for mounting on a bolt suspended from a ceiling structure above the ceiling surface 11, and a wiring hole for drawing a power line or the like into the instrument body 12. . A power supply device 14, a control device 15, and a terminal block 16 are attached to the lower surface of the top plate 20.

  A flange portion 26 that protrudes substantially U-shaped and comes into contact with the ceiling surface 11 around the embedding port 11a protrudes from the periphery of the lower ends of the side plates 21 and 22.

  Inside the pair of side plates 21, a plurality of spring support members 27 for attaching the light source unit 13 are attached.

  Next, FIGS. 1 to 6 show the configuration of the light source unit 13.

  The light source unit 13 includes a frame 30, a shade 31, a reflector 32, a light source 33, a mounting spring 34, and the like, and is unitized as a unit.

  The frame body 30 is formed in a quadrangular frame shape having a quadrangular opening 36 at the center, and is attached to the lower side of the side plates 21 and 22 of the instrument body 12. That is, the frame 30 is attached to the peripheral portion on the opening side of the instrument body 12.

  The frame 30 has a pair of frame portions 37 facing each other in the first direction a and a pair of frame portions 38 facing each other in the second direction b, and the frame portions 37 and 38 are formed in a rectangular frame shape. It is connected. Each of the frame portions 37 and 38 is formed in a substantially U-shaped cross section so as to cover the flange portion 26 of the instrument main body 12.

  Inside the frame portion 37 in the first direction a, a shade support portion 39 that supports the shade 31 is formed to be folded back, and a plate portion 40 is erected upward from the shade support portion 39. On the upper surface of the frame portion 38 in the second direction b, a plate portion 41 as a third plate portion protruding upward is erected. These plate portions 40 and 41 are also connected in a rectangular frame shape.

  A plurality of attachment fittings 42 for attaching attachment springs 34 are attached to the plate portion 40 of the frame portion 37 in the first direction a.

  A pair of wall portions 43 are erected on the inner side of the frame portion 38 in the second direction b so as to face each other. The pair of wall portions 43 are formed integrally with the frame body 30. The pair of wall portions 43 has an upper end that is curved along the first direction “a” and an upper side that is inclined toward the inside of the opening 36 corresponding to the shape of the shade 31. Note that the surface of the frame body 30 is painted white, and the inner surfaces of the pair of wall portions 43 are formed on a white or mirror-like reflecting surface 43a.

  The shade 31 is made of, for example, a milky white resin material having translucency and light diffusibility, and is integrally formed by, for example, a pressure forming method.

  The shade 31 is curved along the first direction a (curving direction) and is a light emitting surface 45 that is linearly formed in the second direction b (width direction). A side surface 48 which is a pair of first plate portions 47 provided on both side surfaces in the second direction b (width direction), both ends of the shade portion 46 and a lower end of the side surface portion 48 project outward. With a peripheral edge 49.

  The shade 31 has a pair of first plate portions 47 (side surface portions 48) arranged outside the pair of wall portions 43 of the frame body 30, so that the shade 31 has a first direction a (curving direction). Edge portions 49 at both ends are supported on a shade support portion 39 of the frame 30. The shade part 46 of the shade 31 assembled to the frame 30 covers the upper side of the opening 23 of the instrument body 12 so that the central area 46b is recessed inside the instrument body 12 with respect to the end area 46a of the shade part 46. It is curved. In addition, although the edge part 49 of the both ends of the 2nd direction b (width direction) of the shade part 46 is not supported by the frame 30 side, the edge part 49 is mounted in a part of board part 41, for example. By providing such a portion, the frame 30 may be supported.

  Further, the reflector 32 includes a reflecting plate 51 provided along the first direction a so that both end sides are bent downward, and a pair of first plates provided on both side surfaces of the reflecting plate 51 in the second direction b. A reflection plate 53 which is a second plate portion 52 is provided. A rectangular opening 54 is formed on the lower surface of the reflector 32, and a space 55 for accommodating the light source 33 and the shade part 46 of the shade 31 is formed inside the reflector 32.

  The reflection plate 51 includes a plurality of reflection surfaces 56a, 56b, 56c, 56d, and 56e that are bent in accordance with the curved shape of the shade portion 46 of the shade 31. The central reflecting surface 56a is provided horizontally, and the reflecting surfaces 56b, 56c on both sides of the central reflecting surface 56a are provided in an inclined manner so that the end portions thereof descend, and the reflecting surface 56c is, for example, at an angle of 45 °. Inclined. The reflection surfaces 56d and 56e constitute the side surface of the reflector 32. Edges 57 projecting outward are provided at both ends of the reflection plate 51.

  At the lower end of the reflection plate 53, an edge portion 58 that protrudes inward of the opening portion 54 is provided.

  Then, the edges 57 and 58 of the reflector 32 are arranged on the edge 49 around the shade 31 assembled to the frame 30 with the annular packing 59 interposed. The pair of second plate portions 52 (reflecting plates 53) are disposed outside the pair of first plate portions 47 (side surface portions 48) of the shade 31. The presser fitting 60 is disposed inside the plate portion 40 of the frame portion 37, and the spring support fitting 27 and the presser fitting 60 are fastened and fixed to the plate portion 40 with screws. The edge 57 of the reflecting plate 51 is pressed against the frame 30 side through the packing 59 by the pressing metal 60. The reflecting plate 53 is fixed to the plate portion 41 of the frame portion 38 with screws. The edge portion 58 of the reflecting plate 53 presses the edge portion 49 of the shade 31 against the shade support portion 39 through the packing 59. Therefore, the shade 31 is sandwiched and held between the frame 30 and the reflector 32.

  The light source 33 includes a pair of main light sources 62 and a pair of auxiliary light sources 63.

  The pair of main light sources 62 are provided along the second direction b at positions on both ends in the first direction a in the reflector 32. That is, the pair of main light sources 62 are attached to the pair of reflecting surfaces 56c of the reflector 32, respectively.

  The main light source 62 emits white light. White light is white illumination light used for general illumination light, and includes, for example, illumination light of daylight color, daylight white color, and light bulb color.

  The main light source 62 includes a light emitting module 64, an attachment portion 65 for attaching the light emitting module 64 to the reflector 32, and a light source cover 66 that covers the light emitting module 64. The light emitting module 64 includes a substrate 67 and a plurality of light emitting elements 68 mounted on the substrate 67. The light source cover 66 has translucency and light diffusibility.

  The main light source 62 faces the end region 46a of the shade 31 from the central region 46b and emits white light from the end region 46a of the shade 31 to the central region 46b. The luminous flux of one main light source 62 is about 3000 lm, for example, and the total luminous flux of the two main light sources 62 included in the lighting fixture 10 is about 6000 lm.

  The pair of auxiliary light sources 63 are attached along the second direction b at the center position in the reflector 32. That is, the pair of auxiliary light sources 63 are respectively attached to the reflecting surfaces 56a of the reflector 32.

  The auxiliary light source 63 emits light of a light color different from white light (hereinafter referred to as color light). Examples of the color light include a case of any one color such as blue or red, or a case of a plurality of colors such as red, green and blue.

  The auxiliary light source 63 includes a light emitting module 69, an attachment portion 70 for attaching the light emitting module 69 to the reflector 32, and a light source cover 71 that covers the light emitting module 69. The light emitting module 69 includes a substrate 72 and a plurality of light emitting elements 73 mounted on the substrate 72. The light source cover 71 has translucency and light diffusibility.

  The auxiliary light source 63 faces the central region 46b of the shade 31 and irradiates the central region 46b of the shade 31 with color light. The luminous flux of the auxiliary light source 63 is, for example, about 270 lm when the light from the auxiliary light source 63 is blue light.

  In order for the luminaire 10 to maintain the function of the main illumination by the white light from the main light source 62 and to prevent the space from being discolored by the color light of the auxiliary light source 63, the luminous flux of the auxiliary light source 63 is one. It is preferably smaller than the luminous flux of the main light source 62, for example, 1/5 or less, more preferably 1/7 or less.

  The attachment spring 34 has a central coil portion attached to the attachment fitting 42 and substantially L-shaped end portions protruding from the coil portion attached to the spring receiving fitting 27 of the instrument body 12.

  Next, the power supply device 14 includes a main power supply device 76 for the main light source and an auxiliary power supply device 77 for the auxiliary light source. Each of these power supply devices 76 and 77 receives an AC power supply, converts the AC power supply into a predetermined DC power supply, and supplies it to the light sources 62 and 63 under the control of the control device 15.

  The control device 15 inputs a dimming signal from the host device and controls the power supply devices 76 and 77.

  Then, the lighting fixture 10 is installed on the ceiling surface 11.

  The instrument main body 12 is inserted into the embedding port 11a of the ceiling surface 11, and the instrument main body 12 is attached to a bolt suspended from the ceiling structure. At this time, the power supply line and the signal line are drawn into the instrument body 12 and connected to the terminal block 16, respectively.

  The mounting spring 34 on one side of the light source unit 13 is hooked on the spring receiving bracket 27 on one side of the fixture main body 12 so that the light source unit 13 is suspended from the fixture main body 12 and pulled out from the reflector 32 of the light source unit 13 in advance. The wiring connector connected to the wiring connector drawn from the power supply 14 of the instrument body 12 is connected.

  By hooking the mounting spring 34 on the other side of the light source unit 13 to the spring receiving bracket 27 on the other side of the instrument body 12 and pushing up the light source unit 13 toward the instrument body 12, the light source is generated by the elasticity of the plurality of mounting springs 34. The unit 13 is pulled up and attached to the instrument body 12.

  In the mounted state of the light source unit 13, the reflector 32 is accommodated in the accommodating part 24 of the instrument body 12, the frame 30 covers the flange part 26 of the instrument body 12, and the shade part 46 of the shade 31 is the opening of the instrument body 12. Cover the upper side of 23.

  The luminaire 10 turns on the main light source 62 and the auxiliary light source 63 by supplying lighting power to the main light source 62 and the auxiliary light source 63 from the main power supply device 76 and the auxiliary power supply device 77, respectively.

  White light from the main light source 62 is irradiated from the end region 46a of the shade 31 to the central region 46b, and color light from the auxiliary light source 63 is irradiated to the central region 46b of the shade 31, and the entire shade 31 is illuminated.

  In this case, the end region 46a of the shade 31 glows white with white light, and the central region 46b of the shade 31 glows blue, for example, with color light.

  White light that has passed through the shade 31 is applied to the illumination space. In this case, the main light source 62 is provided on the end side of the fixture main body 12, and the optical axis of the main light source 62 is inclined toward the center of the lighting fixture 10, whereby the embedded lighting fixture 10 is obtained. Even in this case, it is possible to irradiate white light on a wide light distribution angle region.

  The color light radiated to the central region 46b of the shade 31 is a luminous flux that is such that the central region 46b of the shade 31 is dyed by the color light. Therefore, the color light that is transmitted through the central region 46b of the shade 31 and illuminates the illumination space The amount of light is less than that of white light.

  Therefore, the illumination space is mainly irradiated with white light, and becomes an illumination environment suitable for reading and working, for example.

  Further, the central region 46b of the shade 31 is irradiated with both white light from the main light source 62 and color light from the auxiliary light source 63, but the amount of white light is changed from the end region 46a of the shade 31 to the central region. While gradually decreasing toward 46b, the amount of color light gradually increases from the periphery of the central region 46b of the shade 31 toward the center. Therefore, a gradation region in which the color gradually changes between white and blue is formed between the end region 46a and the center region 46b of the shade 31. Therefore, when looking up at the luminaire 10, the color of the shade 31 appears to change naturally through the gradation area, and the light effect can be enhanced.

  Even if the color light of the auxiliary light source 63 is blue, the central region 46b of the shade 31 becomes blue that is close to sky blue by mixing the blue and white light. In this case, a person who looks up at the lighting device 10 is easily associated with the sky, and can easily feel open and relaxed.

  In addition, a part of the light irradiated to the shade 31 from the main light source 62 and the auxiliary light source 63 is reflected and directed to the reflection surfaces 56a to 56e of the reflector 32, and reflected by these reflection surfaces 56a to 56e and again to the shade 31. Since it is irradiated, it is possible to increase the light extraction efficiency that passes through the shade 31 and is extracted to the illumination space.

  Further, the white light from the main light source 62 is reflected by the reflecting surface 56b and travels toward the central region 46b of the shade 31, and the blue light from the auxiliary light source 63 is reflected by the reflecting surface 56b and the end region 46a of the shade 31. Head in the direction of That is, white light and blue light are directly or indirectly incident and reflected on the reflection surface 56b between the main light source 62 and the auxiliary light source 63, respectively. For this reason, white light and blue light reflected by the reflecting surface 56b are irradiated between the central region 46b and the end region 46a of the shade 31, and the chromaticity of the shade 31 naturally changes, producing a natural gradation with no sense of incongruity. Can be presented.

  Further, a part of the light transmitted through the shade 31 is reflected by the reflecting surface 43a of the wall portion 43 of the frame body 30, and is irradiated to the illumination space. Therefore, the reflecting surface 43a of the wall 43 shines in a color that is continuous with the colors of the end region 46a and the central region 46b of the shade 31, and does not have a simple planar impression, but can obtain a sense of depth and openness. it can.

  Therefore, the lighting fixture 10 can obtain a light effect while maintaining the function of the main illumination with white light.

  Furthermore, since the central region 46b of the shade 31 is curved so as to be recessed inside the instrument body 12, it is easy to obtain a sense of depth and openness as if the central region 46b of the shade 31 that shines with color light is far away. The production effect can be improved.

  Further, in the light source unit 13, a wall portion 43 is provided on the frame body 30, and the first plate portion 47 of the shade 31 is disposed outside the wall portion 43, and is reflected outside the first plate portion 47. By arranging the second plate portion 52 of the body 32, these are arranged in a three-ply manner, so even if an external force is applied to the frame 30 in the direction in which the frame 30 is deformed, Strength can be increased. Moreover, by covering these overlapping portions with the pair of wall portions 43 of the frame body 30, the strength of the light source unit 13 can be increased without impairing the aesthetic appearance and without using a special reinforcing member.

  Further, there are spaces on both sides of the light source unit 13 corresponding to the bending direction of the shade 31 compared to both sides of the light source unit 13 corresponding to the direction orthogonal to the bending direction of the shade 31. Therefore, by providing the attachment springs 34 on both sides of the light source unit 13 corresponding to the bending direction of the shade 31, the workability when attaching / detaching the attachment spring 34 to / from the spring bracket 27 of the instrument body 12 can be improved.

  Further, both end portions of the shade 31 in a direction parallel to the pair of first plate portions 47 of the shade 31 can be sandwiched between the frame body 30 and the reflector 32, whereas the pair of wall portions of the frame body 30 The pair of first plate portions 47 of the shade 31 arranged outside 43 has a structure that is difficult to support on the frame 30, but the first plate portion 47 is reflected by the reflector 32 on the frame 30 side. The shade 31 can be firmly held with respect to the frame 30 by being pressed.

  Further, the wall portion 43 of the frame 30 is inclined inward of the opening 36. This is because the first plate portion 47 has an inclination for die cutting when the shade 31 is molded, and the wall portion of the frame 30 corresponds to the inclination of the first plate portion 47. 43 is also inclined. Since the wall portion 43 of the frame 30 is inclined inward of the opening 36, the light reflection effect is improved downward, and the light of the shade 31 and the light reflected by the wall portion 43 are continuous. Continuity that seems to be can be improved.

  When the auxiliary light source 63 is turned off and only the main light source 62 is turned on, the entire shade 31 can be illuminated with white light. It is also possible to turn off the main light source 62 and turn on only the auxiliary light source 63.

  In addition, the auxiliary light source 63 includes red, green, and blue light emitting elements 73 and can emit color light, for example, irradiates color light corresponding to changes in the sky color at each time, for example, blue sky during the day, evening May reproduce the sunset sky on the light emitting surface 45.

  The shade 31 may be formed in a spherical shape that curves toward the periphery with the center at the top. In this case, the peripheral portion of the shade 31 may be either a square shape or a circular shape. Further, the main light source 62 may be provided in the entire peripheral area of the side surface of the instrument main body 12 so as to irradiate the shade 31 with white light from the outer diameter side of the shade 31.

  The shade 31 may have a flat plate shape or may be curved so that the central region 46b protrudes from the instrument body 12.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
12 Instrument body
13 Light source unit
23 opening
30 frame
31 Sade
32 Reflector
33 Light source
34 Mounting spring
43 Wall
46 Sade
47 First plate
52 Second plate

Claims (3)

An instrument body having an opening in the lower surface;
A frame body having a pair of wall portions that are mounted on a peripheral portion on the opening side of the instrument body and are erected so as to face each other on the inside, and arranged on the outside of the pair of wall portions, respectively A pair of first plate portions supported by the pair, a shade having a shade portion provided above the pair of first plate portions and covering the upper side of the opening of the instrument body, and the pair of first plates A pair of second plate portions disposed on the outer side of the one plate portion and provided on the frame body side; a reflector housed in the instrument body; provided on the reflector; A light source unit comprising a light source for irradiating light on the upper surface side;
The lighting fixture characterized by comprising. The shade is curved so that a central portion of the shade portion is recessed in the instrument body along a direction parallel to the pair of wall portions,
2. The illumination according to claim 1, wherein the light source unit includes attachment springs that are provided on both sides of the light source unit corresponding to a bending direction of the shade part and attach the light source unit to the instrument body. Instruments. In the shade, both ends of the shade portion in a direction parallel to the pair of first plate portions are sandwiched between the frame body and the reflector, and the first plate portion is reflected by the reflection plate. The lighting apparatus according to claim 1, wherein the lighting apparatus is pressed toward the frame body by a body.

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