JP4434662B2 - Recessed ceiling lighting fixture - Google Patents

Description

  The present invention relates to a ceiling-embedded lighting fixture using a plurality of annular lamps.

  Conventionally, a ceiling-embedded lighting fixture embedded in a ceiling has a fixture body made of metal for installation in the ceiling, and a plurality of linear light sources and these lights are controlled on the lower surface of the fixture body. The reflector etc. which control light distribution are attached (for example, refer patent document 1).

  Moreover, when arrange | positioning electric equipments, such as a lighting device, in the center part of an instrument main body, the cover which covers this electric equipment is attached, This cover is functioning as a reflecting plate.

  In such a ceiling-embedded lighting fixture, light distribution control is performed so as to obtain a substantially direct light distribution in which downward light is irradiated in a narrow region.

  In addition, lighting fixtures using a plurality of annular lamps are often used for ordinary houses, such as direct ceiling-mounted lighting fixtures that are installed directly on the ceiling surface.

Such a ceiling-mounted lighting fixture includes a flat fixture main body installed on the ceiling surface, and a lower surface of the fixture main body mainly covers an electrical device such as a lighting device, and further below or reflects below the reflector. An annular lamp is attached around the plate (see, for example, Patent Document 2).
JP 2002-3888214 A (page 4-5, FIG. 1) Japanese Patent Laid-Open No. 10-247571 (page 2-3, FIG. 1)

  As described above, in ceiling-embedded lighting fixtures using linear light sources, the fixture body for installation on the ceiling, the reflector for controlling the light from the lamp, the cover for covering the electrical equipment, etc. It is used as a part, and there is a problem that the number of parts is large and complicated and heavy.

  In addition, even if the configuration of the above-described ceiling-mounted lighting fixture using an annular lamp is simply used for a ceiling-mounted lighting fixture, it is not possible to perform appropriate light distribution control like a ceiling-mounted lighting fixture. There wasn't.

  The present invention has been made in view of the above points. In a ceiling-embedded lighting fixture using a plurality of annular lamps, the number of parts is reduced, and the light distribution is simplified and reduced in weight. The purpose is to do.

The ceiling-embedded lighting fixture according to claim 1 is formed in a substantially inverted U-shaped cross-section having a fixture body-side reflecting surface on the inner surface of a peripheral area where a plurality of annular lamps are horizontally arranged, and is embedded in the ceiling. body and; provided in the center region of the instrument body, the electric equipment capable of accommodating the formed Ru electrical equipment housing part; in the instrument body is provided over the electrical equipment housing part, the cover opening electric apparatus faces downward A lower surface portion formed with a portion, a peripheral surface portion formed upward from the periphery of the lower surface portion, and an outer surface facing the lamp of the peripheral surface portion, provided to be opposed to the instrument main body side reflection surface And a cover having a cover-side reflecting surface that forms a substantially U-shaped reflecting surface that covers the annular lamp.

In this configuration, the instrument main body is formed in a substantially inverted U-shaped cross section, and a plurality of annular lamps are horizontally disposed in the peripheral area in the instrument main body, and the instrument main body side reflecting surface is provided on the inner peripheral surface of the instrument main body. Therefore, the cover can also be used as a reflector by providing a cover-side reflection surface on the outer surface of the cover that covers the electric device housing portion in the central area of the device body. Therefore, the instrument main body and the cover are also used as reflectors, respectively, the number of parts is reduced, and simplification and weight reduction are achieved. In addition, the reflecting surface of the substantially inverted U-shaped cross-section that covers the annular lamp by the reflecting surface on the apparatus body side and the covering- side reflecting surface provided on the outer surface of the peripheral surface portion formed upward from the periphery of the lower surface portion of the cover Therefore, the desired light control function can be easily obtained and the central space of the electric device housing portion can be widened.

  According to a second aspect of the present invention, there is provided the recessed ceiling lighting fixture according to the first aspect, wherein the annular lamp is formed in an annular shape, and the light of the lamp is provided between the fixture main body and the cover. A light control body having a plurality of annular louver pieces in an annular shape is provided, and the louver piece of the light control body is formed so that the width on the cover side reflection surface side is shorter than the width on the reflection surface side on the instrument body side. It is what.

  And in this configuration, the lamp is annular, and the reflection surface is formed in the circumferential direction along the lamp, thereby widening the width of the louver piece of the reflection surface on the instrument body side, The glare prevention is ensured when the lamp provided in the ceiling-mounted lighting fixture is viewed from an oblique direction.

  The ceiling-embedded lighting fixture according to claim 3 is the ceiling-embedded lighting fixture according to claim 1 or 2, wherein mounting means for attaching to the ceiling plate is provided at a peripheral portion of the fixture body embedded in the ceiling plate. It is a thing.

  In this configuration, since the weight can be reduced by the two-part configuration of the instrument main body and the cover, the instrument main body can be attached to the ceiling plate by the attaching means provided on the outer peripheral portion of the instrument main body, and the instrument main body is suspended and supported. Therefore, it is not necessary to install the suspension bolt on the ceiling structure, and the workability is improved.

According to the ceiling-embedded lighting fixture according to claim 1, the fixture main body is formed in a substantially inverted U-shaped cross section, and a plurality of annular lamps are horizontally disposed in the peripheral area in the fixture main body, and in the peripheral area of the fixture main body. By providing the instrument body-side reflective surface on the surface, the instrument body is also used as a reflector, and further, a cover-side reflective surface is provided on the outer surface facing the lamp of the cover that covers the electrical equipment housing portion in the central area of the instrument body. Thus, the cover can also be used as a reflector, so that the instrument main body and the cover can also be used as a reflector, respectively, and the number of parts can be reduced, and simplification and weight reduction can be achieved. In addition, the reflection with a substantially inverted U-shaped cross-section covering the annular lamp is provided by the instrument main body side reflection surface and the cover side reflection surface provided on the outer surface of the peripheral surface portion formed upward from the periphery of the lower surface portion of the cover. Since the surface is formed, a desired light control function can be easily obtained, and the central space of the electric device housing portion can be widened.

  According to the ceiling-mounted lighting fixture according to claim 2, in addition to the effect of the ceiling-mounted lighting fixture according to claim 1, the lamp has an annular shape and the reflection surface is arranged so as to follow the lamp. By forming the louver piece on the reflecting surface on the fixture body side wide, the glare when the lamp in the state where the lamp is installed in the ceiling-mounted lighting fixture is viewed from an oblique direction is formed. Prevention can be ensured.

  According to the ceiling-embedded lighting fixture according to claim 3, in addition to the effect of the ceiling-embedded lighting fixture according to claim 1 or 2, the weight can be reduced by the two-part configuration of the fixture body and the cover. The mounting means provided on the outer peripheral portion of the appliance main body can be attached to the ceiling plate, and it is unnecessary to install a suspension bolt for hanging and supporting the appliance main body on the ceiling structure, thereby improving the workability.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 4 show a first embodiment. FIG. 1 is a cross-sectional view of a ceiling-embedded lighting fixture, FIG. 2 is a perspective view of the ceiling-embedded lighting fixture, and FIG. 3 is a ceiling-embedded lighting fixture. FIG. 4 is a light distribution characteristic diagram of a ceiling-embedded lighting fixture.

  The ceiling-embedded lighting fixture 11 is embedded and installed in the ceiling plate 12 through a circular embedding hole 13 formed in the ceiling plate 12, and the magnitude of lamp output differs as a plurality of annular lamps 2 An annular fluorescent lamp 14 is used. The fluorescent lamp 14 has a base 14a and an annular arc tube 14b having both ends connected to the base 14a.

  The ceiling-embedded lighting fixture 11 has a circular fixture body 21 that is embedded in the ceiling board 12 through the buried hole 13, and two fluorescent lamps 14 are arranged horizontally in the peripheral area of the fixture body 21. Is arranged in. The instrument main body 21 is integrally formed in a substantially inverted U-shaped cross section that is opened downward by drawing, for example, from an aluminum plate material, and has an upper surface portion 22 that extends downward from the periphery of the upper surface portion 22. Thus, a peripheral surface portion (apparatus body peripheral surface portion) 23 is formed, and an edge portion 24 is formed to be joined to the lower surface of the ceiling plate 12 from the peripheral edge of the lower end of the peripheral surface portion 23. On the lower side of the peripheral surface portion 23, a step portion 25 is formed that protrudes outward from the peripheral surface portion 23 and is disposed in the embedded hole 13 of the ceiling plate 12.

  The peripheral surface portion 23 of the instrument main body 21 is formed in an inclined surface shape that expands downward, and the upper surface portion 22 and the peripheral surface portion 23 are formed on a continuous surface by a curved portion 26. On the inner surface of the portion 26 and the peripheral surface portion 23 facing the fluorescent lamp 14, for example, an instrument main body side reflecting surface 27 processed by white coating or mirror finish is formed.

  A lamp socket 29 to which a base 14a of each fluorescent lamp 14 is connected is attached to the upper surface portion 22 of the fixture body 21, and a portion of the arc tube 14b opposite to the base 14a of each fluorescent lamp 14 is attached and detached. The lamp holders 30 that can be held are respectively attached. The lamp socket 29 also has a holder function for detachably holding the base 14a of the fluorescent lamp 14. The lamp sockets 29 and the lamp holders 30 are arranged with their positions shifted in the circumferential direction to facilitate the attaching / detaching operation of the fluorescent lamps 14.

  In addition, an electric device housing portion 34 that is a space in which the electric device 33 can be housed is formed in the central region of the instrument body 21 and in the inner region of the fluorescent lamp 14. An upper surface opening 35 that allows the electric device 33 to be disposed in a protruding state is formed in the center of the upper surface portion 22 corresponding to the electric device housing portion 34.

  A cover 38 that covers the peripheral surface and the lower surface of the electric device housing portion 34 is detachably disposed in a central region in the appliance main body 21 and in an inner region of the fluorescent lamp 14. The cover 38 is integrally formed with a substantially U-shaped cross section that is opened upward by drawing, for example, from an aluminum plate material, and has a lower surface portion 39. The cover 38 is surrounded from the periphery of the lower surface portion 39 upward. A surface portion (cover peripheral surface portion) 40 is formed, and an attachment portion 41 attached to the inner surface of the upper surface portion 22 of the instrument main body 21 from the upper peripheral edge of the peripheral surface portion 40 is formed, for example. A step portion 42 is formed on the outer periphery of the lower portion of the peripheral surface portion 40.

  The peripheral surface portion 40 of the cover 38 is expanded upward, and the upper end side is formed in an inclined surface shape so as to approach the peripheral surface portion 23 and the fluorescent lamp 14 of the instrument main body 21, and the fluorescent lamp of the peripheral surface portion 40 A cover-side reflecting surface 43 processed by, for example, white coating or mirror finish is formed on the outer surface facing 14. An electric device 33 is attached to the lower surface portion 39 of the cover 38, and a cover opening 44 is formed on the lower surface portion 39 so that the electric device 33 faces downward.

  An annular lamp housing portion 46 in which the two fluorescent lamps 14 are horizontally arranged is formed between the fixture main body 21 and the cover 38, and a circle that irradiates light onto the lower surface of the lamp housing portion 46. An annular irradiation opening 47 is formed. The instrument main body side reflecting surface 27 and the cover side reflecting surface 43 face each other inside the lamp housing portion 46, and have a substantially inverted U-shaped cross section that covers the annular fluorescent lamp 14 and opens downward. A reflecting surface 48 is formed.

A light control body 51 for controlling the light of the fluorescent lamp 14 is disposed in the irradiation opening 47 between the instrument body 21 and the cover 38. This light control body 51 is a louver body, and an annular outer frame portion 52 attached to the inner periphery of the step portion 25 of the instrument body 21, and an annular inner frame portion attached to the outer periphery of the step portion 42 of the cover 38. 53, and a plurality of louver pieces 54 are provided between the outer frame portion 52 and the inner frame portion 53 in a radial manner and in an annular shape. The louver piece 54 is formed in a trapezoidal shape in which the vertical width b on the cover side reflective surface 43 side is shorter than the vertical width a on the instrument body side reflective surface 27 side. For example, as shown in FIG. 2, the electrical device 33 is a lighting device 57 such as a downlight, and a cylindrical device body 58 having an opening on the lower surface is attached to the lower surface portion 39 of the cover 38. Is connected to a socket (not shown) disposed on the top of the apparatus main body 58 in a detachable manner, and a light bulb shaped fluorescent lamp 59 as a lamp is disposed. The cover 38 is provided with a mounting portion for attaching the lighting device 57.

  In addition, a lighting device 62 having an inverter lighting circuit for lighting the fluorescent lamp 14 is disposed at a position closer to the outer peripheral side than the center of the upper surface of the appliance main body 21 and at an upper position of the lamp socket 29. Thereby, the wiring distance between the lamp socket 29 and the lighting device 62 can be shortened, and the efficiency of high-frequency lighting of the fluorescent lamp 14 by the inverter lighting circuit can be improved.

  In addition, an attachment means 65 as a one-touch attachment means for one-touch attachment to the ceiling board 12 is provided in the peripheral part of the instrument body 21. The attachment means 65 has a plurality of attachment pieces 66 attached to a plurality of locations around the instrument body 21, and these attachment pieces 66 are made of, for example, a metal plate having spring properties, and one end of the instrument body 21 Attached to the step portion 25 of the peripheral surface portion 23, the other end protrudes obliquely upward. The attachment piece 66 is formed with an attachment portion 67 that is attached to the step portion 25 of the peripheral surface portion 23 of the instrument main body 21, and the attachment portion 67 is outward from the step portion 25 and is formed in the embedded hole 13 of the ceiling plate 12. An engaging portion 68 that protrudes outward from the inner diameter dimension is formed, and a guide portion 69 that is inward from the step portion 25 and toward the center side of the instrument body 21 is formed from the tip of the engaging portion 68.

  Then, in order to attach the fixture body 21 to the ceiling plate 12, the upper side of the fixture body 21 and the tip side of each mounting piece 66 are inserted into the embedding holes 13 of the ceiling plate 12, and each mounting piece 66 protrudes obliquely upward. The instrument body 21 is pushed up while rotating the instrument body 21 in the mounting direction F corresponding to the circumferential direction. As a result, the guide portion 69 of each mounting piece 66 abuts against the inner edge of the embedding hole 13, the mounting piece 66 is elastically deformed inward of the instrument body 21, and the engaging portion 68 is inserted to the upper area of the ceiling plate 13. Then, the mounting piece 66 is elastically opened so as to protrude outward from the instrument body 21, and the lower edge of the engaging portion 68 engages with the upper surface of the ceiling plate 12, and engages with the upper surface of the ceiling plate 12. As a result, the mounting piece 66 is further opened. The edge 24 of the instrument body 21 is joined to the lower surface of the ceiling board 12, and the ceiling board 12 is sandwiched between the edge 24 and each mounting piece 66, and the installation of the instrument body 21 is completed.

  Further, when removing the instrument main body 21, the instrument main body 21 can be removed by rotating the instrument main body 21 in the direction opposite to the attachment direction F in an operation opposite to that at the time of attachment.

  Then, in the ceiling-embedded lighting fixture 11 using a plurality of annular fluorescent lamps 14, the fixture body 21 is formed in a substantially inverted U-shaped cross section, and a plurality of annular fluorescent lamps 14 are formed in the peripheral area within the fixture body 21. Are disposed horizontally and the instrument body-side reflective surface 27 is provided on the inner surface of the peripheral area of the instrument body 21, so that the instrument body 21 is also used as a reflector. By providing the cover-side reflective surface 43 on the outer surface of the cover 38 facing the fluorescent lamp 14, the cover 38 is also used as a reflector, so the instrument body 21 and the cover 38 are also used as reflectors, and the number of parts is reduced. Can be reduced, simplified and reduced in weight.

  In addition, since the reflection surface 48 having a substantially inverted U-shaped cross section that covers the annular fluorescent lamp 14 is formed by the instrument main body side reflection surface 27 and the cover side reflection surface 43, a desired light control function can be easily obtained. At the same time, the width c of the central space of the electric equipment housing portion 34 can be increased. With respect to the point that the width c of the central space can be widened, for example, the reflecting surfaces on both sides of the fluorescent lamp 14 are made flat so that the planar reflecting surfaces on both sides expand and incline downward. In this case, since the lower end position of the planar reflecting surface located on the center side of the instrument main body 21 is located close to the center side of the instrument main body 21, the width c of the central space is reduced. By configuring the letter-shaped reflecting surface 48, the lower end position of the cover-side reflecting surface 43 is less likely to approach the center side of the instrument body 21, and the width c of the center space can be widened. The degree of freedom can be increased.

  In addition, since the weight of the instrument body 21 and the cover 38 can be reduced to, for example, 3 kg or less, the instrument body 21 and the cover 38 can be attached to the ceiling plate 12 by the attaching means 65 provided on the outer peripheral portion of the instrument body 21. It is not necessary to install a suspension bolt for supporting the suspension on the ceiling structure, and the workability can be improved.

  Further, the light control body 51 provided between the instrument main body 21 and the cover 38 can control the light from the plurality of fluorescent lamps 14 and control the light distribution.

  At this time, the fluorescent lamp 14 has an annular shape, and the reflecting surface 48 is formed in the circumferential direction along the fluorescent lamp 14, so that the width a of the louver piece 54 on the instrument body reflecting surface 27 side is increased. By making the width wide, it is possible to reliably prevent glare when the fluorescent lamp 14 provided in the ceiling-embedded lighting fixture 11 is viewed from an oblique direction.

  Further, the horizontal arrangement of the plurality of fluorescent lamps 14, the instrument main body side reflection surface 27 of the instrument main body 21, the cover side reflection surface 43 of the cover 38, the light control body 51 in which the louver pieces 54 are radially arranged, and the like are shown in FIG. The light distribution in the AA direction and the light distribution in the BB direction intersecting the AA direction in the horizontal direction of the ceiling-mounted lighting fixture 11 are substantially the same as shown in FIG. Uniform light distribution characteristics can be obtained, and it is also suitable for general residential use.

  The electrical device 33 is not limited to the lighting device 57, and for example, an emergency light, a speaker, or the like can be applied.

  Further, as shown in FIG. 5, the lighting device 62 may be housed in the electrical device housing portion 34, the protrusion of the upper part of the fixture body 21 can be reduced, and the ceiling-embedded lighting fixture 11 can be configured to be thin. . In this case, in order to conceal the lighting device 62, the lower surface portion 39 of the cover 38 is closed.

  The annular lamp is not limited to the annular fluorescent lamp 14, but a closed lamp, that is, an annular lamp, such as a square fluorescent lamp, can be used. Then, the shapes of the instrument main body 21 and the cover 38 are made to correspond to the shape of the lamp to be used.

  Further, the light control body 51 is not limited to the louver body, and for example, a milky white shade having translucency can be used.

It is sectional drawing of the ceiling-embedded lighting fixture which shows the 1st Embodiment of this invention. It is a perspective view of a ceiling embedded lighting fixture same as the above. It is a side view of a ceiling embedded lighting fixture same as the above. It is a light distribution characteristic figure of a ceiling embedded illumination fixture same as the above. It is a perspective view of the ceiling-embedded lighting fixture which shows the 2nd Embodiment of this invention.

Explanation of symbols

11 Recessed ceiling lighting fixtures
12 Ceiling board
14 Fluorescent lamp as lamp
21 Instrument body
27 Reflective surface of the instrument body
33 electrical equipment
34 Electrical equipment compartment
38 Cover
39 Bottom surface
40 perimeter
43 Cover side reflective surface
44 Cover opening
48 Reflective surface
51 Light control body
54 louver pieces
65 Mounting means

Claims (3)

An instrument main body formed in a substantially inverted U-shaped cross-section having an instrument main body-side reflecting surface on the inner surface of a peripheral area where a plurality of annular lamps are horizontally disposed; and embedded in the ceiling;
Provided in the center region of the instrument body, and the electric device accommodation portion which electric appliance Ru is capable of accommodating formation;
A lower surface portion provided with a cover opening that is provided in the appliance main body so as to cover the electric device downward, a peripheral surface portion formed upward from the periphery of the lower surface portion, and a peripheral surface portion A cover having an outer surface facing the lamp, and a cover-side reflecting surface that forms a reflecting surface having a substantially inverted U-shaped cross section that covers the annular lamp by being provided to face the reflecting surface on the fixture body side;
A ceiling-embedded lighting fixture comprising:   The annular lamp is formed in an annular shape, and a light control body having a plurality of annular louver pieces for controlling the light of the lamp is provided between the instrument body and the cover, and the louver piece of the light control body 2. The ceiling-embedded lighting fixture according to claim 1, wherein the width on the cover side reflecting surface side is shorter than the width on the fixture main body side reflecting surface side.   The ceiling-embedded lighting fixture according to claim 1 or 2, characterized in that mounting means for attaching to the ceiling plate is provided at a peripheral portion of the fixture body embedded in the ceiling plate.

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