JP4379294B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture that is directly installed on a ceiling or the like.

Among conventional lighting fixtures, a lamp socket to which a fluorescent lamp is attached is attached to a fixture main body that is attached to a ceiling or the like, and a screw that is passed through a screw insertion hole of a reflector made of a rectangular frame-like frame, There has been known a lighting fixture having a configuration in which a reflector plate is attached to a fixture body by screwing into screw holes respectively formed at substantially corners of the fixture body (see, for example, Patent Document 1).
JP 2002-184232 A (paragraphs 0018-0021, FIG. 1, FIG. 3 (d))

  Generally, a plurality of spacer protrusions are provided on the back surface of the fixture main body of a direct-attached type lighting fixture as described in Patent Document 1 to separate the back surface from the fixture installation portion. Due to the gap between the part and the instrument installation part, the component mounting member that holds the reflector, the lamp socket or the ballast on the instrument body is prevented from interfering with the instrument installation part. However, since the gap between the instrument main body back surface and the instrument installation part based on the spacer convex part is a factor that increases the width of the instrument body relative to the instrument installation part, the appearance of the instrument in the mounted state is improved. Therefore, it is preferable to make it as small as possible.

  On the other hand, even if the height of the spacer convex portion is simply reduced in order to reduce the width from the fixture installation portion of the lighting fixture, the gap between the fixture main body and the fixture installation portion is reduced, The heat dissipation from the instrument body to the gap (space region) is deteriorated, and the temperature of the instrument body is likely to rise. As the temperature of the instrument body increases, the temperature of the fluorescent lamp attached to the instrument body also increases. It is known that when the temperature of a fluorescent lamp increases, the luminous efficiency of the lamp decreases.

  An object of the present invention is to provide a lighting fixture that has a good appearance in a state where it is installed in a fixture installation section and that can suppress a decrease in luminous efficiency of a fluorescent lamp.

In order to solve the above-mentioned problem, the invention of claim 1 has an installation wall directly attached to the instrument installation part by a plurality of installation means, and projects on the installation wall in a direction opposite to the instrument installation part. A chassis provided with a plurality of connecting projections; a frame shape having a size covering the chassis, and a connecting edge portion which is fixed to the connecting projections on the inner peripheral wall thereof and forms a gap G1 between the installation walls A metal frame that is fixed to the connection convex portion and connected to the chassis to form an instrument body together with the chassis, and the gap G1 is formed between the chassis and the chassis. A frame G2 that is formed between the chassis and a gap G3 that communicates with the outside of the instrument body ; and a valve. Close to the connecting edge and held on the installation wall. Has been a circular fluorescent lamp; equipped with the fluorescent lamp inner space of the inner peripheral wall of the frame body disposed is the gap G1, gap G2, and communicate with the outside of the instrument body through the gap G3 It is characterized by being.

  In the present invention, the chassis is made of metal or synthetic resin, and the connecting convex portion may be provided by fixing a part molded separately from the installation wall to the installation wall, but the number of parts can be reduced. For this reason, it is preferable to mold integrally with the installation wall. Further, the installation means is, for example, a screw or a bolt, and is used for installing the chassis in the instrument installation section. Note that the appliance installation unit includes a member such as a ceiling or a wiring duct. In the present invention, the connecting edge portion may be provided continuously in the circumferential direction on the inner peripheral wall of the frame body, or partially in the circumferential direction of the inner peripheral wall, for example, when the frame body is a square, It can extend in the longitudinal direction on a pair of inner peripheral walls parallel to each other. Further, in the present invention, when the valve approaches the connecting edge, it means an arrangement in which the connecting edge can receive radiant heat from the valve, for example, the valve faces the connecting edge at a close distance. Is preferable, but it may be in the vicinity. In the present invention, the light control body may or may not be attached to the frame body. The light control body is a baffle or a louver or the like, and is provided so as to face the fluorescent lamp so as to obtain a predetermined light blocking angle, or to block direct light from the fluorescent lamp outside the predetermined range. It will function.

  In the first aspect of the present invention, the connecting edge of the frame is fixed to the connecting convex portion protruding in the opposite direction to the device installation portion, and the chassis and the frame are assembled. Depending on the height of the convex part, it can be separated from the instrument installation part so as not to interfere with the instrument installation part. Further, the air around the lamp heated by the lit fluorescent lamp is passed between the rear side of the frame and the chassis through a gap formed between the installation wall and the connecting edge according to the height of the connecting convex portion. Let it escape and let air flow around the lamp. In addition, the radiant heat emitted from the bulb of the lit fluorescent lamp is absorbed by the connection edge of the metal frame close to the bulb of the fluorescent lamp, and is conducted to the entire frame to be transmitted from the frame. Can be released to the surroundings.

  According to a second aspect of the present invention, the chassis is made of metal, the frame body is a square frame shape, and each of the pair of parallel wall portions of the inner peripheral wall of the frame body is the connecting edge portion. And each of the other pair of walls has a bent edge, and these bent edges are thermally connected to the installation wall. In the present invention, the fact that the folding edge and the installation wall are thermally connected means that heat transfer (thermal conduction) from the folding edge to the installation wall is possible. The edge may be in surface contact with the installation wall, or a heat transfer member made of a good heat conductive material may be sandwiched between the bent edge and the installation wall.

  In the second aspect of the invention, as described above, the heat of the fluorescent lamp diffused throughout the frame body by absorbing the connection edge portion is conducted to the metal chassis through the bent edge portion. It is preferable in that it can be released to the outside.

  According to a third aspect of the present invention, there is provided a locking portion capable of hooking the bent edge portion of the one wall portion on a portion of the installation wall covered with one of the other pair of wall portions. It is characterized by providing. In this invention, the locking portion may be provided by fixing a component molded separately from the installation wall to the installation wall, but it is preferable to mold the locking portion integrally with the installation wall in order to reduce the number of components.

  When the frame body is connected to the chassis provided in the instrument installation portion by the installation means, the center portion of the frame body is open and cannot be supported by the operator. Nevertheless, in the invention of claim 3, since the bent edge portion of the frame body can be temporarily held by being hooked to the locking portion of the chassis provided in the instrument installation portion, the work of connecting the frame body to the chassis is easy. This is preferable.

  According to invention of Claim 1, since the clearance gap between an instrument installation part and an installation wall can be narrowed, and the protrusion width of the instrument from instrument installation parts, such as a ceiling, can be made small, In the state installed in the instrument installation part In addition to being able to circulate around the lit fluorescent lamp, it also absorbs the radiant heat emitted from the bulb at the connecting edge of the frame close to the bulb of the fluorescent lamp. Then, since it can be emitted to the periphery of the frame, it is possible to provide a lighting apparatus that can suppress the temperature rise of the fluorescent lamp and suppress the decrease in the luminous efficiency of the lamp.

  According to the invention of claim 2, since the heat of the fluorescent lamp can be released not only from the entire frame but also from the chassis to the outside, the temperature rise of the fluorescent lamp can be more effectively suppressed. It is possible to provide a lighting device that is preferable in suppressing the decrease in efficiency.

  According to the invention of claim 3, since the frame body can be connected to the chassis in a state where the frame body is hooked and temporarily held on the chassis, it is possible to provide a luminaire having good workability in attaching the frame body.

  With reference to FIGS. 1-6, the direct attachment type lighting fixture 1 which concerns on one Embodiment of this invention is demonstrated. The lighting fixture 1 shown in FIG. 1 is directly attached to a fixture installation section, for example, a ceiling C (see FIGS. 3 and 4). The lighting fixture 1 includes a fixture body 2, a light control body such as a baffle 21, and an annular fluorescent lamp 41.

  As shown in FIGS. 2 to 4, the instrument body 2 is formed by connecting, for example, a chassis 3 and a frame body 11. Specifically, the chassis 3 is made of metal, preferably a colored steel plate having a white surface, and is formed into a rectangular shallow box shape with an open bottom surface. The inner surface of the chassis 3 is used as a reflection surface, and the opening edge 3a of the chassis 3 projects outward.

  A pair of through holes 4a and 4b are formed in the rectangular installation wall 3b of the chassis 3 so as to approach one side edge thereof. A power supply line (F cable) (not shown) is passed through one through hole 4a, and a power supply line (F cable) is passed through the other through hole 4b as required. These power supply line and power supply line are connected to a terminal block (not shown) disposed between the through holes 4a and 4b. A lamp socket 5 is attached to the inner surface of the installation wall 3b so as to approach the other side edge of the installation wall 3b parallel to the one side edge. The lamp socket 5 is formed so that a base 42 (see FIG. 1) of the fluorescent lamp 41 can be attached and detached from substantially directly below.

  A plurality of lamp holders 6 are attached to the inner surface of the installation wall 3b. As the fluorescent lamp 41, for example, an annular fluorescent lamp having bulbs 43 provided so as to be arranged in parallel in appearance is used. The valve 43 has a square ring shape that is substantially similar to the shape of the chassis 3. The bulb 43 of the fluorescent lamp 41 having the base 42 connected to the lamp socket 5 is detachably supported by the lamp holder 6.

  As shown in FIGS. 3 and 4, the installation wall 3 b is integrally provided with a plurality of spacer protrusions 7 protruding toward the back surface thereof, that is, toward the ceiling C. These spacer projections 7 are in contact with the ceiling C. The chassis 3 is directly attached to the ceiling C using installation means (not shown), for example, a plurality of installation screws that are screwed into the ceiling C through the installation wall 3b.

  As shown in FIGS. 2 to 4, at least one, for example, a plurality of locking pieces 8 are formed on the installation wall 3 b in a direction opposite to the protruding direction of the spacer convex portion 7, that is, downward in this embodiment. Has been. These locking pieces 8 are provided in the vicinity of the through holes 4a and 4b, and have a substantially L-shaped cross section from a root portion that occurs downward from the installation wall 3b and a tip portion that is bent substantially parallel to the installation wall 3b. (Refer to FIG. 3), and the front end portion faces the central portion of the installation wall 3b.

  As shown in FIGS. 3 and 4, the installation wall 3 b has a plurality of, for example, four connection protrusions 9 a to 9 d (note that the connection protrusions 9 a paired with the connection protrusions 9 b are not shown) on the ceiling C. Projecting in the opposite direction, in other words, projecting in the direction opposite to the projecting direction of the spacer projection 7, that is, projecting downward in this embodiment. These connecting convex portions 9a to 9d are integrally raised from the installation wall 3b, and are provided, for example, on a diagonal line of the installation wall 3b.

The frame 11 is made of metal, preferably a colored steel plate having a white surface, and is a quadrangular frame having an open central portion. That is, as shown in FIGS. 1 and 2, the frame body 11 includes a first frame member 12 disposed with a fluorescent lamp 41 interposed therebetween, a second frame member 13 parallel to the first frame member 12, and these frames. A third frame member 14 and a fourth frame member 15 which are arranged at right angles to the members 12 and 13 and are parallel to each other are connected to each other. The frame 11 is formed in a size that covers the opening edge 3 a of the chassis 3.

The wall portions 12 a to 15 a on the inner peripheral side of the frame members 12 to 15 are continuous with each other to form a frame-like wall surrounding the fluorescent lamp 41. This frame-like wall functions as a reflecting wall in this embodiment. For this reason, the frame 11 is used as a reflective frame . The edge 12b of the slanted wall 12a of the first frame member 12 is bent to the back side of the frame member 12 as shown in FIGS . 2 and 3 so as to be in surface contact with the installation wall 3b of the chassis 3. Is provided. Similarly, the edge portion 13b of the inclined wall portion 13a of the second frame member 13 is also bent to the back side of the frame member 13 as shown in FIGS. 2 and 3, and is in surface contact with the installation wall 3b of the chassis 3. It is provided to do. These edges 12b and 13b are referred to as bent edges in the present invention.

  The edge portion 14b of the inclined wall portion 14a of the third frame member 14 and the edge portion 15b of the inclined wall portion 15a of the fourth frame member 15 are shown in FIG. 2, FIG. 4, and FIG. As shown in FIG. 2, the bent wall is bent opposite to the installation wall 3b and protrudes toward the central portion of the frame 11. These edges 14b and 15b are referred to as connecting edges in the present invention.

  The frame 11 overlaps both longitudinal ends of one connecting edge 14b on the distal end surfaces of the pair of connecting projections 9a, 9b, and connects the other ends of the other connecting edge 15b in the longitudinal direction to the other pair of connecting projections. It is combined with the chassis 3 so as to overlap the front end surfaces of the portions 9c and 9d, and in this state, the connecting projections 9a to 9d are fixed to the connecting convex portions 9a to 9d through the through holes opened at both longitudinal ends of the connecting edges 14b and 15b. For example, the instrument main body 2 is assembled by screwing screws 16a to 16d (see FIGS. 1 to 4) toward the ceiling C, respectively. For example, decorative screws are preferably used for the screws 16a to 16d.

  As described above, the connecting projections 9a to 9d of the chassis 3 to which the screws 16a to 16d are screwed are separated from the installation wall 3b with the installation wall 3b as a boundary, in other words, the ceiling C which is an appliance installation unit. Protrudes in the opposite direction. Then, as described above, the screws 16a to 16d are individually screwed into the connecting projections 9a to 9d and the connecting edges 14b and 15b of the frame 11 are screwed, so that the chassis 3 and the frame 11 Are assembled.

  In a state in which the instrument body 2 is screwed to the ceiling C, the tips of the screws 16a to 16d protruding on the back surface of the installation wall 3b are the total height of the connecting convex portions 9a to 9d and the spacer convex portion 7 and the ceiling C. Interference is prevented. For this reason, the height of the spacer convex part 7 can be made low according to the height of the connection convex parts 9a-9d. Accordingly, the gap S between the ceiling C and the installation wall 3b can be narrowed, the gap S becomes inconspicuous, and the projection width T of the lighting fixture 1 from the ceiling C becomes small. The appearance of the lighting fixture 1 can be improved.

  In the assembly of the instrument body 2, first, by using the bent edge portion 12 b of the frame 11 to the pair of locking pieces 8 of the chassis 3 already fixed to the ceiling C, the bent edge portion 12 b is hooked. The frame 11 can be temporarily positioned on the chassis 3 and can be hooked and held so that the first frame member 12 side of the frame 11 does not fall off the chassis 3. As a result, the second frame member 13 side of the frame body 11 is then pushed up to easily position the connection convex portions 9a to 9d and the connection edge portions 14b and 15b of the chassis 3, and the screws 16a to 16d. Can be screwed.

  Thus, although the frame 11 has a square ring shape and its central portion is open and the central portion cannot be supported by the operator's hand or head, the frame 11 is attached to the chassis 3 by the above-described hooking. Therefore, the assembly of the appliance main body 2 at the ceiling side high place, that is, the operation of connecting the frame 11 to the chassis 3 fixed to the ceiling C with the screws 16a to 16d can be easily performed. Through this assembly, the through holes 4a and 4b, the locking pieces 8 and the like are covered with the first frame member 12, and the lighting device (not shown) and various electric wires fixed to the chassis 3 are covered with the frame body 11. . The bent edges 12b and 13b are pressed against and closely contact the installation wall 3b by the tightening force of the screws 16a to 16d.

  On the other hand, the connection edge portions 14b and 15b do not contact the installation wall 3b regardless of the tightening of the screws 16a to 16d, and the gap G1 according to the height of the connection convex portions 9a to 9d (see FIGS. 3 and 4). ) To face the installation wall 3b. The gap G1 communicates with a gap G2 between the rear surface of the frame 11 and the chassis 3, and the gap G2 defines a gap G3 between the opening edge 3a of the chassis 3 and the outer peripheral edge of the frame 11. It communicates with the outside of the instrument body 2 through. Therefore, the inner space of the inner peripheral wall in which the fluorescent lamp 41 is arranged communicates with the outside of the instrument body 2 through the gap G1, the gap G2, and the gap G3.

  Therefore, the ambient air heated by the lit fluorescent lamp 41 does not stagnate in the inner space of the inner peripheral wall formed by the continuous wall portions 12a to 15a, and the outside of the instrument main body 2 through the communication path. To be discharged. Thereby, the temperature rise of the fluorescent lamp 41 can be suppressed.

  Further, the connecting edge portions 14b and 15b are brought closer to the fluorescent lamp 41 by an amount corresponding to the gap G1, and as shown in FIG. 4, the connecting edge portions 14b and 15b are close to and directly below the connecting edge portions 14b and 15b. 41 valve | bulbs 43 are opposingly arranged so that the connection edge parts 14b and 15b may be met.

  Thereby, the radiant heat emitted from the bulb 43 of the lit fluorescent lamp 41 can be absorbed by the connecting edge portions 14 b and 15 b approaching the bulb 43. Since the absorbed heat is diffused by heat conduction throughout the metal frame 11, it can be released to the surroundings using the frame 11 as a heat dissipation element. Moreover, as described above, the bent edges 12b and 13b of the metal frame 11 are in surface contact with the installation wall 3b of the metal chassis 3, and the chassis 11 is removed from the frame 11 through the bent edges 12b and 13b. 3 can also conduct heat. For this reason, the heat of the fluorescent lamp 41 absorbed by the connecting edges 14b and 15b and diffused throughout the frame 11 is conducted to the chassis 3 via the bent edges 12b and 13b, and the chassis 3 is also externally connected. Can be released.

  As described above, in addition to the fact that air having a high temperature around the fluorescent lamp 41 can be discharged to the outside of the instrument main body 2, the radiant heat of the fluorescent lamp 41 is converted to the frame 11 and the chassis thermally connected thereto. 3 can be discharged to the outside, so that the temperature rise of the fluorescent lamp 41 can be suppressed. For this reason, the luminous efficiency of the fluorescent lamp 41 can be improved.

  1 and 3 to 6, reference numeral 21 denotes a baffle formed by combining a light control body, for example, two first baffle pieces 22 and other two second baffle pieces 23 in a cross-beam shape. Is shown. In order to attach the baffle 21 to the frame 11, for example, two first attachment holes 24 are formed in the wall portion 12a of the first frame member 12 as shown in FIG. The same number of second mounting holes 25 as the first mounting holes 24 are formed in the wall 13 a of the frame member 13. These mounting holes 24 and 25 are formed by slits. Further, a through hole 26 made of a slit is formed in the wall portion 12 a of the first frame member 12 in the vicinity of the first mounting hole 24. Moreover, as shown in FIGS. 3 and 5, a leaf spring 29 having a release convex portion 28 through which the locking hole 27 and the through hole 26 are inserted on the free end side is provided on the back surface of the wall portion 12 a. Corresponding to the mounting holes 24, they are mounted with fixing parts 30 such as rivets. The lower end of the locking hole 27 is located above the lower end of the first mounting hole 24 in a state in which the leaf spring 29 is in contact with the back surface of the wall portion 12a. As shown in FIGS. 3 and 5, one end portion of the first baffle piece 22 is formed with an oblique locking projection 22 a that is engaged and disengaged with the locking hole 27. An insertion end 22b is formed at the other end.

  The baffle 21 is rotated upward with its insertion end 22b inserted into the second mounting hole 25, thereby pushing the locking projection 22a into the first mounting hole 24. The lower edge portion of the portion 22 a is hooked on the lower end of the locking hole 27 and attached to the frame body 11. In this case, the locking projection 22a hits the portion facing the first mounting hole 24 of the leaf spring 29, and the leaf spring 29 is elastically deformed away from the back surface of the wall portion 12a. 22 a is removed from the first mounting hole 24, and the leaf spring 29 is brought into close contact with the back surface of the wall portion 12 a by the elastic force, and at the same time, the lower edge portion of the locking projection 22 a is hooked on the lower end of the locking hole 27.

  Further, in this attached state, by pushing the release convex portion 28 and elastically deforming the leaf spring 29, the catch of the engaging convex portion 22a to the first mounting hole 24 can be removed, so that the second attachment The baffle 21 can be opened with the hole 25 side as a fulcrum. In this case, since the distal end portion 22c of the insertion end portion 22b is bent so as not to pass through the second mounting hole 25, the opened baffle 21 can be prevented from falling off.

  The present invention is not limited to the one embodiment. For example, when the protrusion height of the connecting convex portions 9a to 9d is increased, the spacer convex portion 7 of the chassis 3 can be omitted. And, in the configuration in which the spacer convex portion 7 is omitted, the lighting fixture 1 is directly attached to the fixture installation portion by eliminating the gap between the back surface of the metal chassis 3 and the fixture installation portion such as the ceiling C. The appearance in the installed state can be further improved. Not only that, heat transfer from the chassis 3 to the appliance installation section is good and the appliance installation section can be used as a heat radiating member. Therefore, the temperature rise of the appliance main body 2 and the fluorescent lamp 41 is suppressed more effectively, and the fluorescent lamp 41 can further suppress the decrease in light emission efficiency.

The perspective view which shows the ceiling direct attachment type lighting fixture which concerns on one Embodiment of this invention. The front view which shows the fixture main body with which the lighting fixture of FIG. 1 is provided. Sectional drawing shown along the arrow F3-F3 line | wire in FIG. Sectional drawing shown along the arrow F4-F4 line | wire in FIG. Sectional drawing which shows the state by which the baffle was attached to the frame with which the instrument main body of FIG. 2 is provided. Sectional drawing which shows the state in which the baffle was attached to the frame with which the instrument main body of FIG. 2 is provided along the direction at right angles to FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 2 ... Appliance main body, 3 ... Chassis of an instrument main body, 3b ... Installation wall, 7 ... Spacer convex part, 8 ... Locking piece, 9a-9d ... Connection convex part, 11 ... Frame of instrument main body, DESCRIPTION OF SYMBOLS 12 ... 1st frame material, 13 ... 2nd frame material, 14 ... 3rd frame material, 15 ... 4th frame material, 12a-15a ... Wall part (inner peripheral wall) of 1st-4th frame material ), 12b, 13b ... bent edges, 14b, 15b ... connecting edges, 16a-16d ... screws (adhering means), 41 ... fluorescent lamp, 42 ... base, 43 ... bulb, C ... ceiling (equipment installation part), G1 ... Gap, G2 ... Gap, G3 ... Gap

Claims (3)

A chassis having an installation wall directly attached to the appliance installation portion by a plurality of installation means, and provided with a plurality of connecting projections projecting in the opposite direction to the appliance installation portion;
The frame is sized to cover the chassis, and has a connecting edge that is fixed to the connecting projection on the inner peripheral wall and forms a gap G1 between the connecting wall and the connecting edge. A metal frame that is fixed to a convex portion and connected to the chassis to form an instrument body together with the chassis, and a gap G2 that communicates with the gap G1 is formed between the chassis and the chassis. The frame body disposed with a gap G3 between the chassis and a gap G3 communicating the gap G2 with the outside of the instrument body ;
An annular fluorescent lamp having a bulb and held on the installation wall with the bulb approaching the connecting edge;
Equipped with,
An illuminating device , wherein an inner space of an inner peripheral wall of the frame body on which the fluorescent lamp is disposed communicates with the outside of the device main body through the gap G1, the gap G2, and the gap G3 .   The chassis is made of metal, the frame body is a rectangular frame shape, each of a pair of parallel wall portions of the inner peripheral wall of the frame body has the connecting edge portion, and another pair of walls. The lighting apparatus according to claim 1, wherein each of the wall portions has bent edges, and the bent edges are thermally connected to the installation wall.   The locking portion capable of hooking the bent edge portion of the one wall portion is provided at a portion of the installation wall covered with one of the other pair of wall portions. The lighting fixture of 2.

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