JP4367321B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture that is attached to a construction surface such as a ceiling surface and uses a halogen bulb for direct illumination.

  Conventionally, as a lighting fixture attached to a construction surface such as a ceiling surface, a halogen lamp, and a dichroic mirror that transmits infrared light among the light emitted from the halogen lamp and distributes only visible light to a predetermined irradiation range. The thing using the halogen lamp | ramp of the single cap which has is provided (for example, refer patent document 1). The dichroic mirror has, for example, a funnel shape having a small opening through which an electric wire is inserted and a large opening through which light is emitted, and surrounding the halogen lamp.

In this type of lighting equipment, the use of a dichroic mirror reduces the infrared light irradiated to the irradiation range while using a halogen lamp that emits light including infrared light as the light source. Temperature rise is prevented.
Japanese Patent Laid-Open No. 11-329035

  Here, the dichroic mirror is formed by vacuum deposition or the like on the inner surface of a funnel-shaped substrate made of a light-transmitting material such as glass, which reflects visible light and transmits infrared light. Being done.

  However, it is difficult to form a dichroic film having a sufficient thickness up to the end on the small opening side of the base on the base side, and a transparent region that transmits visible light tends to occur between the base and the dichroic film. Therefore, the shade and the cover attached to the halogen light bulb are illuminated by the shape of the transparent region by the visible light leaking from the transparent region, and the appearance is bad.

  This invention is made | formed in view of the said reason, The objective is to provide the lighting fixture which can suppress the deterioration of the appearance by the light which leaks from a dichroic mirror.

  The invention of claim 1 is a one-piece halogen light bulb having a dichroic mirror that distributes visible light, and a direction in which visible light distributed by the dichroic mirror is irradiated in a direction away from the construction surface. A socket to which the halogen bulb is attached, a translucent cover made of a material having translucency, fixed to the socket and covering the halogen bulb when viewed from at least the direction along the construction surface, a dichroic mirror and a translucent cover And a light distribution cover that distributes visible light leaked from the dichroic mirror to the construction surface side.

  According to the present invention, visible light leaking from the dichroic mirror to the construction surface side can be made inconspicuous by distributing the light with the light distribution cover, so that the light leaking from the dichroic mirror compared to the case where no light distribution cover is provided. The deterioration of the appearance due to is suppressed. In addition, the light from the halogen bulb can be used more effectively than when the visible light leaking from the dichroic mirror to the construction surface is simply blocked.

  According to a second aspect of the present invention, in the first aspect of the present invention, the socket cover that is attached to the construction surface and houses and holds the socket, and the light distribution cover and the socket cover are mechanically coupled to the socket cover and the light distribution cover The fixing member has a window portion through which visible light leaked from the dichroic mirror to the construction surface side is provided between the dichroic mirror and the light distribution cover.

  According to the present invention, the light distribution cover is fixed to the socket cover via the fixing member, so that the construction becomes easier than when the light distribution cover is attached to the construction surface separately from the socket cover. Further, by providing the window portion, it is possible to suppress reflection of visible light leaking from the dichroic mirror to the construction surface side at the fixing member.

  The invention of claim 3 is the invention of claim 2, wherein the light distribution cover, the socket cover, and the fixing member are each white.

  According to the present invention, visible light leaking from the dichroic mirror to the construction surface side can be efficiently used as compared with the case where the light distribution cover, the socket cover, and the fixing member are chromatic.

  According to a fourth aspect of the present invention, in the second or third aspect of the invention, the light-transmitting cover is provided with a parallel portion that is parallel to the construction surface and transmits light distributed by the light distribution cover. Features.

  According to the present invention, the light distributed by the light distribution cover can be easily emitted to the construction surface side, so that the light distributed by the light distribution cover can be used effectively.

  The invention of claim 5 is characterized in that, in the invention of claim 4, in the translucent cover, the parallel part is made transparent and the parts other than the parallel part are made matt.

  According to this invention, since the parallel part is made transparent, it becomes easy to emit the light distributed by the light distribution cover to the construction surface side, so that the light distributed by the light distribution cover can be used effectively. Can do. In addition, since the parts other than the parallel portion are matted, the halogen light bulb is difficult to see from the direction along the construction surface, so that the appearance seen from the direction along the construction surface is improved.

  The invention of claim 6 is the invention of claim 4 or claim 5, wherein the portion of the translucent cover that is located closer to the construction surface than the parallel portion is within the range where the light distributed by the light distribution cover is irradiated. It is characterized by being contained in.

  According to the present invention, the light distributed by the light distribution cover illuminates the entire portion of the translucent cover that is located on the construction surface side with respect to the parallel portion. Therefore, the translucent cover is closer to the construction surface side than the parallel portion. The appearance is improved as compared with the case where only a part of the position is illuminated.

  According to a seventh aspect of the present invention, there is provided the housing according to any one of the second to sixth aspects, wherein the light distribution cover, the socket cover, and the fixing member are integrated, and the translucent cover is supported by the housing. It is characterized by.

  According to the present invention, the number of parts is reduced as compared with a case where parts for supporting the light-transmitting cover are separately prepared.

  Since the present invention includes a light distribution cover that distributes visible light leaked from the dichroic mirror included in the one-piece base halogen bulb to the construction surface side, the light leaked from the dichroic mirror to the construction surface side can be made inconspicuous. Therefore, the deterioration of the appearance due to the light leaking from the dichroic mirror is suppressed as compared with the case where the light distribution cover is not provided. In addition, the light from the halogen bulb can be used more effectively than when the visible light leaking from the dichroic mirror to the construction surface is simply blocked.

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

(Embodiment 1)
In the present embodiment, as shown in FIG. 1, a single-piece halogen bulb 1 having a dichroic mirror 11, a socket 2 to which the halogen bulb 1 is attached, and a socket 2 that is suspended from a ceiling surface as a construction surface are accommodated. A housing 3 to be held, and a translucent cover 4 that is made of a translucent material such as glass or acrylic resin, is cylindrical, and surrounds the halogen bulb 1, the socket 2, and the housing 3. Hereinafter, the vertical direction will be described with reference to FIG.

  As shown in FIGS. 2A to 2C, the housing 3 is formed in a bottomed cylindrical shape having an open bottom surface, and accommodates and holds the socket 2 therein, and is coaxial with the socket cover portion 31. A bottom portion of the connecting portion 32 having a bottomed cylindrical shape having an open bottom surface and a larger inner diameter and outer diameter than the socket cover portion 31, the center portion of the upper surface communicating with the lower end of the socket cover portion 31; And a flange portion 33 that protrudes outward in the radial direction of the connecting portion 32, is inclined upward toward the outside, and is formed in a truncated cone shape as a whole. For example, the housing 3 is suspended from the ceiling surface by fixing the other end of the wire W whose one end is fixed to the center of the bottom surface of the socket cover portion 31 to a ceiling surface (not shown). Furthermore, an electric wire insertion hole 31 a for inserting an electric wire L drawn from the ceiling surface and electrically connected to the socket 2 is formed through the upper surface of the socket cover portion 31. When the halogen bulb 1 is attached to the socket 2 accommodated in the socket cover portion 31, the end portion on the base side of the dichroic mirror 11 is surrounded by the connection portion 32 and the flange portion 33 of the housing 3.

  As shown in FIG. 3A, the translucent cover 4 includes a cylindrical large-diameter portion 41, an annular parallel portion 42 projecting inward from the upper end of the large-diameter portion 41, and a parallel portion. The inner diameter and the outer diameter are smaller than the large-diameter portion 41 and project from the inner peripheral end of the large-diameter portion 41. Here, the inner diameter of the large diameter portion 41 is larger than the outer diameter of the flange portion 33 of the housing 3, and the inner diameter of the small diameter portion 43 is larger than the outer diameter of the socket cover portion 31 of the housing 3 and the fixed portion 42. It is smaller than the outer diameter. Then, as shown in FIG. 3B, the wire W and the electric wire L are inserted on the upper side of the housing 3, and as shown in FIG. 1, a parallel portion is formed between the upper surface of the connecting portion 32 and the upper end of the flange portion 33. By placing 42, the translucent cover 4 is supported. Here, the housing 3 and the halogen bulb 1 are each covered with a translucent cover 4 when viewed from the horizontal direction (direction along the construction surface). The parallel part 42 is parallel to the ceiling surface. Since the translucent cover 4 is supported by the housing 3 as described above, the number of parts is reduced as compared with the case where a part for supporting the translucent cover 4 is separately prepared.

  Further, at least the inner surface of the large-diameter portion 41 and at least the outer surface of the small-diameter portion 43 are each subjected to a matting process such as sandblasting. The parallel portion 42 is transparent without being matted. The matting process makes it difficult to see the halogen bulb 1 and the housing 3 when viewed from the horizontal direction (the direction along the construction surface), and the translucent cover 4 by the light from the halogen bulb 1 and the light distributed by the flange portion 33. The appearance is improved because the shine is prevented.

  Here, the entire housing 3 is painted white, for example, so that visible light is efficiently diffusely reflected (diffusely reflected). Further, as shown in FIGS. 2 (a) and 2 (c), a plurality of window holes 32a that are vertically long are arranged in the circumferential direction on the side surface of the connecting portion 32.

  1, visible light leaking from the end on the base side of the dichroic mirror 11 passes through the window hole 32a, is diffusely reflected by the inner surface of the flange portion 33, and passes through the parallel portion 42. Then, the outer surface of the small diameter portion 43 is irradiated. That is, the flange part 33 is a light distribution cover, and the connection part 32 is a fixing member.

  According to the above configuration, the light leaked from the dichroic mirror 11 is diffusely reflected by the flange portion 33 of the housing 3, thereby blurring the outline of the region of the translucent cover 4 irradiated with the light leaked from the dichroic mirror 11. Deterioration of appearance due to light leaking from the dichroic mirror 11 is suppressed.

  Further, the light leaking from the dichroic mirror 11 is distributed by the flange portion 33 of the housing 3, so that it is effectively used as light for illuminating the outer surface of the translucent cover 4.

  Further, by making the parallel part 42 in which the light distributed to the flange part 33 is incident in the translucent cover 4 transparent, the use of light leaked from the dichroic mirror 11 is compared with the case where the parallel part 42 is matted. Efficiency is improved.

  In addition, since the flange portion 33 serving as a light distribution cover and the socket cover portion 31 serving as a socket cover are integrated via a connecting portion 32 serving as a fixing member, the number of parts can be reduced compared to a case where a light distribution cover is separately prepared. is decreasing. Furthermore, the workability is improved as compared with the case where the light distribution cover is attached to the ceiling surface separately from the socket cover.

(Embodiment 2)
Since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and illustration and description thereof are omitted.

  The present embodiment is configured to be directly attached to the ceiling surface C as shown in FIG. 4 instead of the suspension support from the ceiling surface as in the first embodiment.

  More specifically, the translucent cover 4 includes two halves 4a and 4b that are divided into right and left in FIG. Then, the two halves 4a and 4b are respectively screwed to the housing 3 with screws SC such as thumbscrews so as to sandwich the housing 3 and the halogen bulb 1, so that the translucent cover 4 is attached to the housing 3. It is attached. Further, the translucent cover 4 and the housing 3 are attached to the ceiling surface C by the screws SC being supported by the attachment member 5 fixed to the ceiling surface C.

  Furthermore, the dimension of the housing 3 is such that the entire small diameter portion 43, which is a portion located on the ceiling surface C side of the parallel portion 42 in the translucent cover 4, is within the irradiation range of the light distributed by the flange portion 33. The dimensions of the translucent cover 4 are set.

  According to the above configuration, in addition to the effects common to the first embodiment, the entire small diameter portion 43 of the translucent cover 4 is illuminated by the light distributed by the flange portion 33, so that the appearance seen from the horizontal direction is implemented. This can be improved over the first mode.

  Moreover, since it fixes directly to the ceiling surface C instead of hanging like Embodiment 1, it can attach not only to the ceiling surface C but to a wall surface or a floor surface as a construction surface.

It is the partially broken front view which shows Embodiment 1 of this invention. It is a perspective view which shows the principal part same as the above, (a) (b) shows the state seen from a mutually different direction, (c) shows the state which removed the halogen light bulb from (b). It is a figure which shows the same as the above, (a) is a perspective view, (b) is an exploded perspective view. It is the partially broken front view which shows Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Halogen bulb 2 Socket 3 Housing 4 Translucent cover 11 Dichroic mirror 31 Socket cover part 32 Connection part 33 Flange part 42 Parallel part

Claims (7)

  A single-piece halogen bulb with a dichroic mirror that distributes visible light, and a socket that is attached to the construction surface and where the halogen bulb is attached in a direction where the visible light distributed by the dichroic mirror is emitted away from the construction surface And a transparent cover that is made of a light-transmitting material and is fixed to the socket and covers the halogen bulb as viewed from the direction along at least the construction surface; and a dichroic mirror provided between the dichroic mirror and the transparent cover A lighting fixture comprising a light distribution cover that distributes visible light leaked from a work surface to a construction surface side.   A socket cover that is attached to the construction surface and stores and holds the socket; and a fixing member that mechanically couples the light distribution cover and the socket cover and fixes the light distribution cover to the socket cover. The lighting apparatus according to claim 1, further comprising: a window portion through which visible light leaked from the dichroic mirror to the construction surface side is passed between the dichroic mirror and the light distribution cover.   The lighting fixture according to claim 2, wherein the light distribution cover, the socket cover, and the fixing member are white.   4. The lighting apparatus according to claim 2, wherein a parallel portion that is parallel to the construction surface and through which light distributed by the light distribution cover is transmitted is provided in the light transmission cover.   5. The luminaire according to claim 4, wherein in the translucent cover, the parallel part is transparent, and the part other than the parallel part is matted.   6. The illumination according to claim 4, wherein a portion of the translucent cover that is located closer to the construction surface than the parallel portion is contained within a range irradiated with light distributed by the light distribution cover. Instruments.   The lighting apparatus according to claim 2, further comprising a housing in which the light distribution cover, the socket cover, and the fixing member are integrated, and the light-transmitting cover is supported by the housing.

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