JP4730295B2 - Recessed lighting fixture - Google Patents

Description

  The present invention relates to an embedded lighting fixture.

  Conventionally, there has been an embedded luminaire that is embedded through an embedded hole provided in a ceiling material (see, for example, Patent Document 1). This embedded lighting fixture includes a horizontally long box-like fixture body having an opening on the lower surface, and a flange extending outward is formed on the entire edge of the opening edge of the fixture body. Has been. In addition, a substantially V-shaped bent portion for controlling light distribution is formed on the upper surface of the instrument body, and one lamp is provided at each end in the width direction with the bent portion interposed therebetween. It is arranged. Further, a light-shielding louver in which a V-shaped reflector and three flat plates are combined in a lattice shape is attached near the opening of the instrument body. Mounting brackets are provided for sandwiching the ceiling material therebetween.

When installing this embedded lighting fixture on the ceiling surface, insert the fixture body into the embedded hole formed in the ceiling surface, and insert it until the buttocks and the bottom surface of the ceiling material come into contact. The holding bracket provided on the mounting bracket is moved downward while moving downward. Then, when the presser fitting comes into contact with the upper surface of the ceiling material, the fixture main body is attached to the ceiling surface with the ceiling material sandwiched between the presser fitting and the flange.
JP 2000-306419 A (pages 3 to 5 and FIGS. 1 to 8)

  In the embedded lighting fixture shown in Patent Document 1 described above, the fixture body is in contact with the ceiling surface at the buttocks, and heat generated by the lamp is transferred from the fixture body to the ceiling material via the buttocks, so that the ceiling material There is a possibility that the finishing material such as vinyl cloth provided on the indoor side surface of the interior of the interior may be thermally deteriorated to deteriorate the appearance.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an embedded lighting fixture that does not transfer heat generated by a light source to a construction material.

The invention according to claim 1, the frame member has an outer surface formed along the inner surface of the embedding hole formed in the building material and a reflective plate at least partially in contact with the inner surface of the frame, the back surface of the building material An instrument body disposed on the back side of the construction material in a state where at least a part thereof is in close contact with the light source is disposed in the space surrounded by the instrument body, the reflector, the embedding hole, and the frame body cage, instrument body and the frame body, characterized in that it is shape formed in a shape that does not contact with the surface side of the building material in the mounted state.

  The invention according to claim 2 is characterized in that the distance between the inner surface of the embedding hole and the outer surface of the frame is 5 mm or less in the mounted state.

  According to the first aspect of the present invention, since the frame body is formed in a shape that does not contact the surface side of the construction material in the attached state, the heat generated by the light source is constructed from the reflector through the frame body. Heat transfer to the surface side of the material can be suppressed. Therefore, it is possible to suppress the deterioration of the appearance of the surface of the construction material due to heat, and to maintain the appearance of the construction material in a good state.

  According to the invention of claim 2, in the mounted state, the distance between the inner surface of the embedded hole provided in the construction material and the outer surface of the frame body is set to 5 mm or less, so that the gap between the embedded hole and the frame body is reduced. A still air layer is formed, and this still air layer becomes a heat insulation layer, and it is possible to further suppress the heat generated by the light source from being transferred to the construction material. Therefore, it is possible to further suppress the appearance deterioration of the surface side of the construction material due to heat, and to maintain the appearance of the construction material in a better state.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 4 and 10, the embedded lighting fixture A according to the present invention is disposed on the back of the ceiling through an embedded hole 18 provided in a construction material (for example, the base material 16 and the finished ceiling 17) and suspended. The bolts 7 are fixed to the suspension bolts 22 provided on the housing 21 of the building via the bolts 7.

  As shown in FIGS. 2 to 4, the embedded lighting device A is irradiated with a substantially box-shaped body 1 whose lower surface is opened and a one-piece lamp (light source) 9 which is formed in a substantially box shape whose lower surface is opened. A reflecting plate 3 that reflects the light, a frame 4 having a substantially rectangular tube shape with an upper surface and a lower surface opened, and a translucent panel 5 disposed on the lower surface side of the frame 4.

  First, the body 1 will be described with reference to FIGS. The body 1 is formed in a substantially box shape with the lower surface opened and the upper surface opened in a substantially cruciform shape, and the sub-bodies 2 and 2 are attached to two opposing side surfaces of the body 1, respectively. In addition, a plurality of (two in FIG. 3) lamp sockets 8 to which the single base lamp 9 is attached are provided on the inner side surface on one side of the remaining side surfaces of the body 1, and the connection surface 8a to which the single base lamp 9 is connected. Each is fixed with the inside facing. Further, a lighting circuit mounting base 6 on which a lighting circuit 10 for supplying power to the single-cap lamp 9 is attached to the body 1 at a position outside the lamp socket 8 is rotatably attached to the body 1. The lighting circuit 10 and each lamp socket 8 are electrically connected via lead wires (not shown).

  Next, the subbody 2 will be described with reference to FIG. The sub-body 2 has a substantially rectangular plate-shaped main piece 2a to which an adjustment fitting 11 to be described later is attached, and a flange portion 2c extending outward is provided on the lower end side of the main piece 2a. . Further, an attachment piece 2b extending inward is provided on the upper end side of the main piece 2a, and the sub-body 2 is attached to the body 1 via the attachment piece 2b. Furthermore, the main piece 2a of the sub-body 2 is provided with an opening 2d through which the locking pieces 11d, 11d of the adjustment fitting 11 are movably inserted in the vertical direction, and on both sides in the left-right direction with the opening 2d in between. Are provided with elongated holes 2e and 2e, respectively, through which mounting screws 19 for attaching the adjustment fitting 11 to the main piece 2a are movably inserted in the vertical direction. Further, slits 2f and 2f through which the positioning pieces 11b and 11b of the adjustment metal fitting 11 are movably inserted in the vertical direction are provided near both ends in the left and right direction of the long holes 2e and 2e, respectively. Further, a mounting bracket (not shown) is provided at a lower position on the right side of the main piece 2a, and a substantially T-shaped slit 2g for adjusting the position of the mounting bracket in the vertical direction is provided. When the body 1 and the sub-body 2 are fixed to the base material 16 before, the mounting bracket is adjusted in the vertical direction along the slit 2g to sandwich the base material 16 between the flange 2c and the mounting bracket. The subbody 2 is fixed to the base material 16. Here, the body 1 and the subbody 2 constitute an instrument body 20.

  Here, the adjustment metal fitting 11 is demonstrated based on FIG. The adjustment metal fitting 11 has a horizontally long plate-shaped mounting main piece 11a, and the positioning pieces 11b and 11b are perpendicular to the mounting main piece 11a from the both ends in the longitudinal direction of the mounting main piece 11a and are in the same direction. Each is bent. An attachment sub-piece 11c is integrally formed above the attachment main piece 11a, and the locking pieces 11d and 11d are substantially parallel to the positioning piece 11b from both longitudinal ends of the attachment sub-piece 11c. Each bend is formed in the same direction. Furthermore, locking grooves 11e and 11e that are locked with locking spring portions 14b and 14b of a V-shaped spring 14 described later are formed in the locking pieces 11d and 11d, respectively. Further, in the main piece 11a, one screw hole 11f into which the mounting screw 19 is screwed is provided near both ends in the longitudinal direction.

  Next, a method of attaching the adjustment fitting 11 to the sub body 2 will be described with reference to FIG. First, with the positioning piece 11b and the locking piece 11d facing the sub body 2, the adjustment fitting 11 is brought close to the sub body 2 from the outside, both the locking pieces 11d and 11d are inserted into the opening 2d, and each positioning piece 11b is inserted. Is inserted through the corresponding slit 2f. Then, the adjustment fitting 11 is attached to the sub body 2 when the attachment screw 19 is inserted into each elongated hole 2e from the inside and screwed into the screw hole 11f. Since the adjustment fitting 11 can be slid in the vertical direction by loosening the mounting screw 19, the position of the adjustment fitting 11 in the vertical direction can be adjusted.

  Here, the suspension bolt metal fitting 7 will be described with reference to FIG. The suspension bolt fitting 7 has a substantially rectangular plate-shaped main piece 7a, and fixing pieces 7b and 7b for fixing to the sub-bodies 2 are integrally provided at both ends in the longitudinal direction of the main piece 7a. . In addition, a rotating portion 7c having a screw hole 7d into which the threaded portion of the suspension bolt 22 is screwed is attached to the main piece 7a so as to be rotatable with respect to the main piece 7a. By rotating 7c, the vertical position of the suspension bolt metal fitting 7 can be adjusted without rotating the main piece 7a and the two fixed pieces 7b, 7b.

  Next, the reflecting plate 3 will be described with reference to FIGS. The reflection plate 3 is made of metal and is formed in a substantially box shape with an open lower surface, and a flange portion 3a extending outward is formed on the opening edge over substantially the entire circumference. In addition, a plurality of (two in FIG. 3) insertion holes 3b for inserting the lamp socket 8 are provided in portions corresponding to the lamp socket 8 on the side surface of the reflecting plate 3. The reflector 3 is fixed to the upper surface of the body 1 using, for example, screws.

  Furthermore, the translucent panel 5 is demonstrated based on FIG. The translucent panel 5 is a milky white acrylic material, for example, and has light diffusibility, and is formed in a substantially rectangular plate shape as shown in FIG. The translucent panel 5 has a thin plate-like flat surface portion 5d, and a thick portion 5b thicker than the flat surface portion 5d is integrally formed on the outer edge of the flat surface portion 5d over the entire circumference. ing. Thus, since the light-transmissive panel 5 can be reinforced by forming the thick part 5b on the outer edge of the flat part 5d, the thickness of the flat part 5d can be reduced and the light transmittance can be improved. be able to. Further, as shown in FIG. 8B, a built-up portion 5c whose thickness gradually increases in a curve from the flat portion 5d to the thick portion 5b is provided at the boundary portion between the flat portion 5d and the thick portion 5b. ing. Furthermore, locking pieces 5a and 5a projecting upward are provided at approximately the center positions of the two thick portions 5b and 5b facing each other in the translucent panel 5, and the locking pieces 5a Locking claws 5g and 5g that protrude laterally and have locking portions 5f and 5f at the lower end are integrally formed on both sides of the tip. Here, a fulcrum switching piece 5e that abuts on a regulating member 15 to be described later is constituted by the distal end portion of the locking piece 5a and the both locking claws 5g and 5g.

  Next, the frame 4 will be described with reference to FIGS. 2 to 5 and 7. The frame body 4 is formed in a substantially rectangular tube shape with an upper surface and a lower surface opened, and two side surface portions 4b and 4b facing each other in the frame body 4 are provided with openings 4a and 4a, respectively, as shown in FIG. It has been. Further, as shown in FIG. 7, a fixing portion 4c for fixing a mounting bracket 12 to be described later is recessed inwardly at an upper position of each opening 4a, and the mounting bracket 12 is provided in the fixing portion 4c. There are provided two screw holes 4d into which mounting screws (not shown) are screwed when fixing the screw.

  Here, the mounting bracket 12 will be described with reference to FIGS. The mounting bracket 12 has a horizontally long and substantially rectangular plate-shaped mounting piece 12a, and a mounting ring 13 to which a V-shaped spring 14 (to be described later) is mounted is fixed to one end in the width direction of the mounting piece 12a. The fixing hole 12g is provided. Further, the support piece 12b is bent in the direction orthogonal to the attachment piece 12a from the other end in the width direction of the attachment piece 12a, and a pair of panel holding springs 12c from the both ends in the longitudinal direction of the support piece 12b. 12c is bent in the opposite direction to the mounting piece 12a. Each panel holding spring 12c has a fulcrum switching spring piece 12j formed in a shape in which the intermediate portion protrudes outward as compared with both ends, and the lower end side of the fulcrum switching spring piece 12j is in the outward direction. The locking surface 12d that protrudes to the locking member 15 and locks with a regulating member 15 described later is integrally formed. Further, a substantially square-shaped panel locking piece 12e having a locking surface 12h for locking with the locking portion 5f of the translucent panel 5 extends from the locking surface 12d and is integrally bent. Further, the mounting piece 12a is provided with a screw insertion hole (not shown) at a portion corresponding to the screw hole 4d provided in the fixing portion 4c of the frame body 4, and the mounting bracket 12 is attached to a mounting screw (not shown). ), The panel holding spring 12c and the restricting member 15 are arranged facing the opening 4a as shown in FIG.

  Next, the restriction member 15 will be described with reference to FIGS. The regulating member 15 is formed in a U-shaped cross-section with an open bottom surface, and locking portions 15b and 15b for locking with the locking surfaces 12d and 12d of the panel holding springs 12c and 12c are provided on both ends of the top surface, respectively. Is provided. Further, a contact portion 15a that comes into contact with the fulcrum switching piece 5e of the translucent panel 5 is provided at a substantially central position on the upper surface of the regulating member 15, and the contact portion 15a and the locking portions 15b and 15b are provided. Between, insertion holes 15c and 15c are respectively provided. Then, when each panel holding spring 12c is inserted into the corresponding insertion hole 15c and the locking portion 15b is locked to the locking surface 12d, the panel holding springs 12c and 12c are bent inward. The member 15 is held by both panel holding springs 12c and 12c.

  Furthermore, the V-shaped spring 14 will be described with reference to FIG. The V-shaped spring 14 has a base portion 14a bent in a coil shape, and a pair of locking spring portions 14b and 14b having elasticity extend in a substantially V-shape from both ends of the base portion 14a. ing. The V-shaped spring 14 is rotatably attached to the attachment ring 13 at the base portion 14a. The attachment ring 13 is attached to the attachment piece 12a of the attachment fitting 12 using, for example, screws.

  Here, the procedure for attaching the frame 4 to the instrument body 20 will be described with reference to FIGS. 4 and 5. First, in a state where the locking spring portions 14b, 14b of the V-shaped spring 14 are bent in a direction approaching each other, the upper end surface of the side surface portion 4b of the frame body 4 comes into contact with both positioning pieces 11b, 11b of the adjustment fitting 11. The frame body 4 is pushed upward. When the upper end surface of the side surface portion 4b is in contact with the positioning pieces 11b, 11b, the locking spring portions 14b, 14b expand when the hand is released from the locking spring portions 14b, 14b, and the locking groove 11e. 11e, and the frame body 4 is attached to the instrument body 20. Since the frame body 4 is only locked in the locking grooves 11e and 11e by the elastic force of the locking spring portions 14b and 14b, when removing the frame body 4 from the instrument body 20, the frame body 4 is removed. Just pull it down and you can easily remove it.

  Next, a procedure for attaching and detaching the translucent panel 5 to the frame body 4 will be described with reference to FIG. First, the installation procedure will be described with reference to FIG. First, the regulating member 15 is slid downward along the panel holding springs 12c and 12c, and the locking portions 15b and 15b are locked to the locking surfaces 12d and 12d, respectively. At this time, if the restricting member 15 exceeds the projecting portion of the fulcrum switching spring pieces 12j, 12j, the panel holding springs 12c, 12c are expanded by the spring reaction force, so that the restricting member 15 is pushed downward and the locking portion 15b. 15b are engaged with the engaging surfaces 12d and 12d, respectively. In this state, the panel holding springs 12c are held in a state where they are bent in a direction approaching each other, that is, in a state of being elastically biased inward. Next, when the translucent panel 5 is brought closer from the lower side of the frame body 4, the panel locking pieces 12 e and 12 e are pushed and expanded by the fulcrum switching piece 5 e of the translucent panel 5 while being elastically urged away from each other. It is done. Further, when the translucent panel 5 is pushed in, the fulcrum switching piece 5e passes through both panel locking pieces 12e and 12e, so that both panel locking pieces 12e and 12e return to their original positions by the spring reaction force, and the fulcrum switching piece The locking portions 5f and 5f of 5e are respectively locked with the locking surfaces 12h and 12h of the locking pieces 12e and 12e, and the translucent panel 5 is attached to the frame body 4. At this time, the regulating member 15 is not in contact with the fulcrum switching piece 5e, and is held in a state where the locking portions 15b and 15b are locked with the locking surfaces 12d and 12d, respectively.

  Furthermore, the removal procedure will be described with reference to FIG. When the translucent panel 5 is further pushed from the state where the translucent panel 5 is attached to the frame body 4, the fulcrum switching piece 5 e comes into contact with the contact portion 15 a of the regulating member 15, and the regulating member 15 is pushed up. When the regulating member 15 slides upward along the panel holding springs 12c and 12c and exceeds the protruding portion of the fulcrum switching spring pieces 12j and 12j, the panel holding springs 12c and 12c are expanded by the spring reaction force. The restricting member 15 is pushed upward and is held in a state where the engagement between the engagement portion 15b and the engagement surface 12d is released. In this state, the panel holding springs 12c and 12c expand in a direction away from each other by the spring reaction force, so that the locking portion 5f and the locking surface 12h are unlocked, and the translucent panel 5 is removed from the frame body 4. be able to.

  Next, a construction procedure in the case where the embedded lighting fixture A is attached after the foundation material 16 and the finished ceiling 17 are constructed will be described based on FIG. 1, FIG. 4, and FIG. Here, the base material 16 and the finishing ceiling 17 constitute a construction material. First, the position of the adjustment fitting 11 is adjusted according to the thickness of the base material 16 and the finishing ceiling 17. Next, the suspension bolt fitting 7 is attached to the suspension bolt 22, the instrument body 20 is placed on the base material 16 through the embedded hole 18 in a state where the lighting circuit mounting base 6 is rotated upward, and the lighting circuit mounting base 6 is further mounted. Turn it down to return it to its original position. Then, the rotary part 7c is rotated from the lower side so that the vertical position of the suspension bolt metal fitting 7 is aligned with the position of the attachment piece 2b of the sub body 2, and the attachment bolt (not shown) is used to attach the suspension bolt metal fitting 7 to the attachment piece. Fix to 2b. Furthermore, when the rotating part 7c is rotated from the lower side to bring the instrument main body 20 into close contact with the base material 16, the attachment of the instrument main body 20 is completed as shown in FIG. Next, in a state where the locking spring portions 14b and 14b of the V-shaped spring 14 are bent in a direction approaching each other, the frame body 4 is inserted from the lower side through the embedded hole 18 to adjust the locking spring portions 14b and 14b, respectively. When elastically locked to the locking grooves 11e and 11e of the metal fitting 11, the frame body 4 is attached to the instrument body 20 as shown in FIG. Further, as shown in FIG. 10 (c), the reflector 3 is attached to the fixture body 20 through the embedded hole 18, and then the one-piece lamp 9 is attached to the lamp socket 8. In this state, the reflector 3 is in contact with the inner surface of the frame 4 at the flange 3a. Finally, as shown in FIG. 10 (d), when the translucent panel 5 is inserted into the embedding hole 18 from below and the fulcrum switching piece 5e is engaged with the panel holding springs 12c and 12c, the translucent panel 5 Is attached to the frame body 4, and the mounting of the embedded lighting fixture A is completed. At this time, as shown in FIG. 1, the frame body 4 is provided with a space of D dimension between the base material 16 and the side surface of the finished ceiling 17 (the inner surface of the embedded hole 18), and the finished surface (surface) of the finished ceiling 17. It arrange | positions in the state which is not in contact with 17a (lower surface of the finishing ceiling 17). In the present embodiment, the frame body 4 is arranged so that the dimension D = 5 mm.

  Furthermore, another construction example of the embedded lighting fixture A will be described with reference to FIG. In FIG. 11, the finishing ceiling 17 is omitted. First, in a state in which the base material 16 is applied (a state before the finishing ceiling 17 is applied), the instrument body 20 is inserted into the embedding hole 18 in a state where the lighting circuit mounting base 6 is rotated upward. The lighting circuit mount 6 is rotated downward to return to the original position. In this state, the flange portion 2 c of the sub body 2 is in contact with the lower surface of the base material 16. Next, when the mounting bracket (not shown) is adjusted in the vertical direction along the slit 2g provided in the sub-body 2 and the base material 16 is sandwiched between the mounting bracket and the flange 2c, the mounting of the instrument body 20 is performed. Is completed. Hereinafter, when the frame 4, the reflector 3, the one-piece lamp 9, and the translucent panel 5 are sequentially attached in the same procedure as in the construction example described above, the attachment of the embedded lighting fixture A is completed. In this state, as shown in FIG. 11, the flange 2c of the sub-body 2 is exposed on the lower surface side of the base material 16. However, when the finish ceiling 17 is applied, the flange 2c is not exposed and finished. The embedded lighting fixture A is constructed without contacting the finished surface 17a of the ceiling 17.

  In this embedded luminaire A, in the mounted state, the frame 4 is formed in a shape that does not contact the finished surface 17a of the finished ceiling 17, that is, in a shape that does not provide a collar at the lower end of the frame 4. In the case of the construction example as shown in FIG. 10, it is possible to suppress the heat generated by the one-piece lamp 9 from being transferred from the reflector 3 to the finished surface 17 a of the finished ceiling 17 through the frame body 4. Therefore, it is possible to suppress deterioration of the appearance of the finished surface 17a due to heat, and it is possible to maintain the appearance of the finished surface 17a in a good state. In particular, when the frame body 4 is arranged so that the distance D between the side surface of the base material 16 and the finishing ceiling 17 and the side surface portion 4b of the frame body 4 is 5 mm, the base material 16 and the finishing ceiling 17 and the frame body 4 are arranged. A still air layer is formed between them, and this still air layer becomes a heat insulating layer, and it is possible to further suppress the heat generated by the one-piece lamp 9 from being transferred to the base material 16 and the finished ceiling 17. Accordingly, it is possible to further suppress the appearance deterioration of the finished surface 17a of the finished ceiling 17 due to heat, and to maintain the appearance of the finished surface 17a in a better state.

  Furthermore, when constructed as shown in FIG. 11, the flange 2 c of the sub-body 2 is disposed between the front surface side of the base material 16 and the back surface side of the finished ceiling 17, and contacts the finished surface 17 a of the finished ceiling 17. Since it does not contact, heat is not transferred to the finished surface 17a via the flange portion 2c, and the appearance of the finished surface 17a can be maintained in a good state.

  In the present embodiment, the frame body 4 is arranged so that the distance D between the side surface of the base material 16 and the finished ceiling 17 and the side surface portion 4b of the frame body 4 is 5 mm, but the D dimension is the present embodiment. It is not limited to this, and it may be 5 mm or less. Further, the lower limit value of the interval D is a value determined in consideration of easiness of construction and the like, for example, 1 mm or more, preferably 2 mm or more. In this case as well, since a static air layer is formed between the side surfaces of the base material 16 and the finished ceiling 17 and the side surface portion 4b of the frame body 4, the same effect can be obtained.

It is a state figure which shows the positional relationship of a frame and a ceiling material in the state which attached the embedded lighting fixture of this embodiment to the ceiling. It is a perspective view same as the above. It is the perspective view which looked at the same from the lower side. It is a top view which fractures | ruptures same as the above. It is a perspective view which fractures | ruptures same as the above. It is a perspective view of the adjustment metal fitting used for the same as the above. It is a principal part detailed perspective view of a frame same as the above. (A) is a perspective view of the translucent panel same as the above. (B) is a principal part detailed perspective view of a translucent panel same as the above. (A) is a state figure which shows the state of the principal part at the time of attaching a translucent panel to the frame same as the above. (B) is a state figure which shows the state of the principal part at the time of removing a translucent panel from a frame same as the above. (A)-(d) is explanatory drawing which shows the state which attaches the same to a ceiling. It is explanatory drawing which shows another example of the state attached to the ceiling same as the above.

Explanation of symbols

3 Reflector 4 Frame 9 Single base lamp (light source)
16 Base material 17 Finish ceiling 17a Finish surface (surface)
18 Embedded hole A Embedded lighting fixture

Claims (2)

A frame having an outer surface formed along the inner surface of the embedding hole provided in the construction material;
A reflector at least partially contacts the inner surface of the frame body,
An instrument body disposed on the back side of the construction material in a state in which at least a part is in close contact with the back surface of the construction material ;
A light source is disposed in a space surrounded by the instrument body, the reflector, the embedded hole, and the frame,
The instrument body and the frame body implantable luminaire, characterized in that it is shape formed in a shape that does not contact the surface of the building material in the mounted state.   2. The embedded lighting apparatus according to claim 1, wherein an interval between the inner surface of the embedded hole and the outer surface of the frame is 5 mm or less in the attached state.

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