JP2007213967A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture in which dust is hardly accumulated at the surrounding of a light source for indirect illumination. <P>SOLUTION: The lighting fixture is provided with a fixture body 1 fixed on a ceiling face. A ring shaped fluorescent lamp 3 as the light source for direct illumination to irradiate light downward and an LED block 4 having a light-emitting diode element as the light source for indirect illumination to irradiate the light on the ceiling face are respectively mounted on the fixture body 1. Moreover, the lighting fixture is provided with a translucent cover 6 which is composed of a material having translucency and covers the upper side of the LED block 4. The dust is hardly accumulated at the surrounding of the LED block 4 by the translucent cover 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lighting fixture attached to a ceiling surface.

2. Description of the Related Art Conventionally, lighting fixtures attached to a ceiling surface include, for example, a direct illumination light source that includes a fluorescent lamp and emits light downward, and an indirect illumination light source that includes, for example, an incandescent lamp and emits light to the ceiling surface. Provided (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 7-220508

  In the above-described conventional lighting fixture, the upper side of the light source for indirect illumination is opened in order to allow the light of the light source for indirect illumination to pass through. Therefore, dust tends to accumulate around the light source for indirect illumination, and cleaning is difficult.

  This invention is made | formed in view of the said reason, The objective is to provide the lighting fixture which dust does not collect easily around the light source for indirect illumination.

  According to the first aspect of the present invention, there is provided a fixture main body to which a direct illumination light source is attached and fixed to the ceiling surface in a direction to radiate light of the direct illumination light source downward, and is held by the fixture main body and emits light to the ceiling surface. A light source for indirect illumination, a lighting means for direct illumination that is housed in the fixture body and lights the light source for direct illumination, a lighting means for indirect illumination that is housed in the fixture body and turns on the light source for indirect illumination, and translucency And a translucent cover which is made of a material and interposed between the ceiling surface and the light source for indirect illumination.

  According to this invention, the light transmitting cover makes it difficult for dust to collect around the light source for indirect illumination.

  According to a second aspect of the present invention, in the first aspect of the invention, the light source for indirect illumination comprises a light emitting diode element with an integrated lens, and the optical axis of the light source for indirect illumination is directed in a direction parallel to the ceiling surface. It is characterized by being.

  According to the present invention, it is possible to illuminate the ceiling surface over a wide range as compared with the case where the optical axis of the light emitting diode element is directed to the ceiling surface.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein at least a part of the light source for indirect illumination is held by the fixture body and the light of the light source for indirect illumination is directed toward the ceiling surface. A light distribution body for indirect illumination that distributes light is provided.

  According to this invention, a ceiling surface can be illuminated more brightly compared with the case where the light distribution body for indirect illumination is not provided.

  The invention of claim 4 is the invention of any one of claims 1 to 3, which is made of a material having no translucency and is interposed between the light source for direct illumination and the light source for indirect illumination, and indirect illumination as viewed from below. The light source is provided with a light shielding body that covers the light source.

  According to the present invention, the range illuminated by the direct illumination light source and the range illuminated by the indirect illumination light source are separated by the light shielding body, so that, for example, the direct illumination light source and the indirect illumination light source are individually turned on. In the case of using different types of light sources with different impressions for the direct illumination light source and the indirect illumination light source, the difference between the direct illumination light source and the indirect illumination light source can be clarified.

  According to the present invention, it is difficult to collect dust around the indirect illumination light source by including the translucent cover made of a material having translucency and interposed between the ceiling surface and the indirect illumination light source.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  In the present embodiment, as shown in FIG. 1, for example, an instrument main body 1 that is fixed to a ceiling surface by a known hook ceiling, and a frame that surrounds the instrument main body 1 and is supported on the outer periphery of the instrument main body 1. A body 2. A ring-shaped fluorescent lamp 3 as a light source for direct illumination that emits light downward is attached to the lower side of the fixture body 1, and an LED block 4 having a light-emitting diode element 41 (see FIG. 2) as a light source for indirect illumination is It is attached to the upper side of the frame 2. The lower surface of the instrument body 1 is painted white, for example, and distributes the light from the fluorescent lamp 3 downward. Further, as shown in FIG. 2, the fixture body 1 includes a fluorescent lamp lighting device 11 that generates power for lighting the fluorescent lamp 3, an LED lighting device 12 that generates power for lighting the light emitting diode element 41, and a fluorescent lamp. A control device 13 that controls each of the lamp lighting device 11 and the LED lighting device 12 is housed. The control device 13 includes a receiving unit that receives a control signal input from the outside via a signal line or as a wireless signal, and the fluorescent lamp lighting device 11 and the LED lighting device according to the control signal received by the receiving unit. 12, the fluorescent lamp 3 and the light emitting diode element 41 are individually turned on / off and dimmed. The lighting devices 11 and 12 and the control device 13 are each supplied with power from a commercial power source AC. Since each lighting device 11 and 12 and the control device 13 can be realized by a well-known technique, detailed description and illustration are omitted.

  The frame body 2 is made of, for example, a synthetic resin molded product. As shown in FIG. 3, as shown in FIG. 3, the ring-shaped inner peripheral portion 21 located on the upper side of the instrument body 1 and the outer end portion of the inner peripheral portion 21 project downward. The connecting portion 22, the annular intermediate portion 23 projecting outward in the horizontal direction from the lower end of the connecting portion 22, and projecting downward from the outer end portion of the intermediate portion 23 to project the fluorescent lamp 3 and the LED An inner cover 24 interposed between the block 4 and a lower cover that covers the LED block 4 as viewed from below, which is an annular shape projecting outward from the lower end of the inner cover 24 in the horizontal direction. 25 and an annular convex portion 26 projecting upward from the outer peripheral end of the lower cover portion 25. For example, silver is deposited on the upper surface of the lower cover portion 25 and the outer peripheral surface of the inner cover portion 24, and the light is reflected through the light emitting diode element 41 without passing through the light, and is distributed upward or outward in the horizontal direction. . That is, the frame 2 is a light distribution body for indirect illumination in the claims, and is also a light shielding body. In addition, since the fluorescent lamp 3 and the LED block 4 are partitioned by the inner cover portion 24 of the frame body 2, the radiant heat of the fluorescent lamp 3 is blocked, so that the temperature rise of the LED block 4 is suppressed. Yes. Furthermore, the mutual light between the fluorescent lamp 3 and the light emitting diode element 41 does not leak to the other side, and the lower cover portion 25 of the frame 2 is positioned below the LED block 4, so that the light emitting diode Since the light of the element 41 is not emitted downward, the range illuminated by the fluorescent lamp 3 and the range illuminated by the light emitting diode element 41 are distinguished. Therefore, the visual effect of illumination can be clearly made different when only the fluorescent lamp 3 is turned on and when only the light emitting diode element 41 is turned on. Instead of silver deposition, the upper surface of the lower cover portion 25 of the frame body 2 and the outer peripheral surface of the inner cover portion 24 may each reflect the light of the light emitting diode element 41 by, for example, a known mirror finish. Further, when silver vapor deposition or mirror finishing is not performed, it is desirable to use a resin as close to white as possible as the synthetic resin constituting the frame body 2 in order to increase the light utilization efficiency of the light emitting diode element 41.

  The LED block 4 includes a light emitting diode element 41 and a printed wiring board 42 on which four light emitting diode elements 41 are mounted in a straight line. The light emitting diode element 41 is of a pin mounting type (so-called bullet-shaped) in which a sealing resin for sealing a light emitting diode chip (not shown) also serves as a lens for collecting the light of the light emitting diode chip. The printed wiring board 42 is fixed to the mounting plate 40 that is hooked and supported by the frame body 2 by, for example, screwing. More specifically, the mounting plate 40 is formed by bending a metal plate, for example, a holding portion 40a on which the printed wiring board 42 is fixed, and a thickness direction of the holding portion 40a from the upper end portion of the holding portion 40a. And a connecting portion 40b protruding to the opposite side of the side to which the printed wiring board 42 is fixed, and a covered portion protruding from one end of the connecting portion 40b in the thickness direction of the connecting portion 40b and facing the holding portion 40a. And a locking portion 40c. A locking recess 23 a is provided on the upper surface of the intermediate portion 23 of the frame 2, and the mounting plate 40 is supported by the frame 2 by locking the locked portion 40 c in the locking recess 23 a. . In the frame 2, as shown in FIG. 4, eight LED blocks 4 are arranged in the circumferential direction with the light emitting diode elements 41 aligned in the circumferential direction and the optical axis of the light emitting diode elements 41 in the radial direction. The positions are shifted by 45 ° at equal intervals.

  Moreover, as shown in FIG. 5, the shade 5 which consists of the material which has translucency, is attached to the lower side of the instrument main body 1, and covers the fluorescent lamp 3 between the instrument main bodies 1, and the material which has translucency. A transparent cover 6 that covers the LED block 4 between the frame 2 and the ring shape that overlaps the upper side of the frame 2. The LED block 4 is covered with a translucent cover 6 as viewed from above. Specifically, for example, acrylic resin or glass can be used as the material for the shade 5 and the translucent cover 6.

  The translucent cover 6 has an annular shape surrounding the connecting portion 22 of the frame body 2, an inner peripheral portion 61 placed on the intermediate portion 23 of the frame body 2 and the connecting portion 40 b of the mounting plate 40, A frustoconical portion 62 that protrudes downward from the outer end portion of the peripheral portion 61 and inclines so as to increase the inner diameter and the outer diameter toward the lower portion as a whole, and protrudes inward from the lower end of the frustoconical portion 62. An annular stepped portion 63 and an annular convex portion 64 projecting downward from the inner end of the stepped portion 63 are provided. The step portion 63 of the translucent cover 6 is positioned above the annular convex portion 26 of the frame body 2, and the annular convex portion 64 of the translucent cover 6 is positioned inside the annular convex portion 26 of the frame body 2. Further, as shown in FIG. 1, the outer surface of the frustoconical portion 62 is provided with projections and projections that are long in the radial direction and arranged radially in the circumferential direction. Diffused. Therefore, the light of the light emitting diode element 41 can be made soft light. Further, depending on the degree of light diffusion and the brightness of the light emitting diode element 41, even if the interval between the LED blocks 4 is increased to reduce the number, the number of light emitting diode elements 41 over the entire circumference when the ceiling surface is viewed from below is reduced. Can be illuminated with light. The unevenness is not limited to the above-described radial shape, and the same effect can be obtained even in other shapes such as a mesh shape as shown in FIG.

  According to the above configuration, the upper side of the LED block 4 is covered with the translucent cover 6, so that dust does not easily collect around the LED block 4, and cleaning is easy.

  Instead of the light-transmitting cover 6, a cover (not shown) made of a material having a light-transmitting property only at the outer part in the horizontal direction or the upper part of the LED block 4 may be used. When such a cover is used, a portion made of a light-transmitting material in the cover is the light-transmitting cover in the claims.

  Further, for example, a straight-tube fluorescent lamp (not shown) is used in place of the ring-shaped fluorescent lamp 3, or a surface-mounted light emitting diode in which a lens is not integrated in place of the bullet-shaped light emitting diode element 41. Even if an element 43 (see FIG. 7) or an incandescent lamp (not shown) is used, other shapes or other types of light sources may be employed instead of the fluorescent lamp 3 and the light emitting diode element 41 as in this embodiment. Although a light-emitting diode element is preferably used for the indirect illumination light source, it is desirable for miniaturization.

  Further, the shape of each part is not limited to the above. For example, as shown in FIG. 7, the upper and lower dimensions of the frustoconical part 62 are reduced in the translucent cover 6, and the LED block 4 is interposed between the frustoconical part 62 and the step part 63. Needless to say, appropriate changes can be made, for example, by providing a cylindrical tube portion 65 surrounding the cylinder.

It is a figure which shows the structure of embodiment of this invention, The left half is a front view, The right half is sectional drawing. It is a block diagram which shows the same as the above. It is sectional drawing which shows the principal part same as the above. It is explanatory drawing which shows arrangement | positioning of the LED block seen from the upper direction same as the above. It is a perspective view which shows the same as the above. It is a front view which shows the principal part of another form same as the above. It is sectional drawing which shows the principal part of another form same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Frame 3 Fluorescent lamp 4 LED block 6 Translucent cover 11 Fluorescent lamp lighting device 12 LED lighting device 13 Control device 41 Light emitting diode element

Claims (4)

  A fixture body that is attached to a direct illumination light source and is fixed to the ceiling surface in a direction to emit light from the direct illumination light source downward, an indirect illumination light source that is held by the fixture body and emits light to the ceiling surface, and an appliance A direct illumination lighting means for lighting a direct illumination light source housed in a main body, an indirect illumination lighting means housed in an appliance main body for lighting an indirect illumination light source, and a ceiling surface made of a translucent material; A luminaire comprising a translucent cover interposed between a light source for indirect illumination.   The illuminating device according to claim 1, wherein the light source for indirect illumination comprises a light emitting diode element integrated with a lens, and the optical axis of the light source for indirect illumination is oriented in a direction parallel to the ceiling surface.   The light source for indirect illumination, which is held by the fixture body and is at least partially positioned below the light source for indirect illumination and distributes the light of the light source for indirect illumination toward the ceiling surface, is provided. The lighting fixture of Claim 1 or Claim 2.   4. A light-shielding body made of a material having no translucency and interposed between a direct illumination light source and an indirect illumination light source and covering the indirect illumination light source when viewed from below. The lighting fixture in any one of.

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