JP2011129424A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire which has an LED mounted on a hooking ceiling attached on a ceiling, and further reduces a thickness. <P>SOLUTION: An adapter 20 is mounted on the hooking ceiling 50 by hooking a hooking claw 21c of a blade 21 on the hooking ceiling 50 fixed on the ceiling 11 to fix and conduct. At that time, power is supplied to a power circuit 22 through a conducting part 21d coupled and formed with the blade 21, and a connection terminal 22f of the power circuit 22 is coupled to the connection pin 32 of a substrate 30 with the LED mounted thereon to supply power to the substrate 30 and light. Therefore, connection between electrical components inside the luminaire 10 can be carried out without using an electric wire, to reduce a thickness of the luminaire 10, the assembly man-hour and cost. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a luminaire that is mounted on a hook ceiling attached to a ceiling using a light emitting diode.

2. Description of the Related Art Conventionally, lighting fixtures that are used by being attached to a hook ceiling attached to a ceiling are known (see, for example, Patent Document 1).
Hereinafter, the conventional lighting apparatus 100 described in Patent Document 1 will be described with reference to FIG. The lighting apparatus 100 can be used by being mounted on a hook ceiling 102 installed on a ceiling 101. An adapter 103 that can be electrically and mechanically attached to and detached from the hook ceiling 102 is attached to a disk-shaped main body 105. Is provided. The adapter 103 can be attached to various types of hook ceilings. On the side surface of the adapter 103, a pair of engaging claws 104 protrudes by being biased by a spring, and a detaching button 117 for moving the engaging claws 104 back into the case is provided on the case.
In FIG. 6, the embedded type hook ceiling 102 having a low height is shown, and the illustration of the square type hook ceiling having a high height is omitted.

  An opening 107 having a size that allows the adapter 103 to be inserted is provided in the flat portion 106 at the center of the instrument main body 105, and an attachment body 115 corresponding to the type of hook sealing is provided around the opening 107. A mounting portion 116 for mounting is provided. A reflector 108 is attached to the lower surface of the instrument main body 105, and a cylindrical portion 109 communicating with the opening 107 is provided at the center of the reflector 108. A first engagement portion 110 that engages with the lower portion of the adapter 103 and a second engagement portion 111 that engages with the engagement claw 104 of the adapter 103 are provided inside the tube portion 109.

Further, a lamp mounting means 113 for mounting a ring-shaped fluorescent lamp 112 is provided on the outer surface of the reflector 108, and a lighting device (not shown) for lighting the fluorescent lamp 112 is provided inside the reflector 108. Etc. are provided.
A shade 114 that covers the fluorescent lamp 112 and the like is detachably provided on the lower surface of the instrument body 105.

  Therefore, although not shown, when the fixture main body 105 of the lighting fixture 100 is attached to a hook ceiling (not shown) attached to the ceiling 101, the fixture main body 105 is attached to the adapter 103 attached to the hook ceiling. The opening 107 is engaged. At this time, since the height of the hooking ceiling is high, the lower first engaging portion 110 is engaged with the engaging claw 104 of the adapter 103.

  Further, as shown in FIG. 6, when the instrument main body 105 is attached to the hook ceiling 102 having a low height, the attachment body 115 is attached to the attachment portion 116 of the instrument main body 105, and the adapter 103 attached to the hook ceiling 102 is attached to the adapter 103. The opening 107 of the instrument body 105 is engaged. At this time, since the height of the hooking ceiling 102 is low, the upper second engaging portion 111 is engaged with the engaging claw 104 of the adapter 103, and the hooking ceiling 102 is relatively positioned inside the attachment body 115. enter in.

Japanese Patent Laid-Open No. 10-275516 (FIG. 1)

  However, when the lighting fixture 100 is installed using the ceiling ceiling 102 from the ceiling 101 like the conventional lighting fixture 100 described in Patent Document 1 described above, the adapter 103 is attached under the hook ceiling 102. At least the height of the hooking ceiling 102 plus the thickness of the adapter 103 has caused a problem that it cannot fully meet the recent needs for thinning.

In addition, since the electrical connection between the adapter 103 and the lighting device that are supplied with electric power from the hooking ceiling 102 and between the lighting device and the lamp socket is generally performed by electric wires, an installation space and a work space are provided. Because of this, there was a limit to thinning.
Further, when a light emitting diode (hereinafter referred to as “LED”) is used as a light source in a lighting fixture, in order to improve the light emission efficiency, further measures for heat dissipation are required as the thickness is reduced.

  The present invention has been made in order to solve the conventional problems, and provides a lighting apparatus using an LED attached to a ceiling ceiling mounted on a ceiling, which can be further reduced in thickness. The purpose is to do.

  The lighting fixture of the present invention includes a blade, an adapter provided with the blade, a power circuit, a substrate on which an LED is mounted, a blade housing the adapter, the power circuit, and a housing for housing the substrate. The blade has a hook claw that is hooked and fixed to a hook ceiling fixed to the ceiling, and the adapter is connected to the blade and is electrically connected to supply power to the power supply circuit. The power supply circuit includes a connection terminal that supplies power to the substrate by being coupled to a connection pin provided on the substrate.

  With this configuration, the adapter is attached to the hooking ceiling by hooking the hooking claw of the blade to the hooking ceiling fixed to the ceiling and fixing and conducting. At this time, power is supplied to the power supply circuit through the conductive portion coupled with the blade, and the power is connected to the connection pin of the board on which the LED is mounted, thereby connecting the power to the board. Supply and light up. For this reason, since it is possible to directly connect the electrical components inside the lighting fixture without using an electric wire, it is possible to reduce the thickness of the lighting fixture, reduce the number of assembly steps, and reduce the cost. it can.

  Further, in the lighting apparatus of the present invention, the blade is integrally formed with the adapter, and the power supply circuit is placed on a ceiling-side upper surface of the adapter so as to fit in a gap formed between the adapter and the ceiling. It has the structure mounted on one surface.

  With this configuration, since the blade is integrally formed with the adapter, a conventionally required holder for fixing the adapter becomes unnecessary, and the number of parts can be reduced. In addition, since the power supply circuit is disposed between the ceiling and the adapter, the lighting fixture can be reduced in thickness, weight, and cost.

  Moreover, the lighting fixture of this invention has the structure which provided the lock mechanism which prevents that the said adapter rotates with respect to the said hook ceiling, and the release lever which cancels | releases the said lock mechanism in the said adapter.

  With this configuration, the lock mechanism prevents the adapter from rotating with respect to the hooking ceiling, so that the luminaire can be prevented from falling off. Further, since the lock mechanism can be released by the release lever, the luminaire can be removed.

  Moreover, the lighting fixture of this invention has the structure attached so that the board | substrate which mounted said LED, and the substantially horizontal one surface side on the opposite side to the ceiling mounting surface of the said adapter may contact | abut substantially.

  With this configuration, since the board on which the LED is mounted is in contact with one surface of the adapter, the heat from the board can be dissipated to the adapter side, and the board is cooled without using a separate component, thereby improving the luminous efficiency. Can be improved.

  In the lighting fixture of the present invention, a heat radiating portion for radiating heat from the substrate on which the LED is mounted is provided on a side surface portion of the housing, and the side surface portion of the housing is perpendicular to the ceiling of the adapter. It has the structure contact | abutted with the end surface.

  With this configuration, since the side surface portion of the housing and the end surface in the vertical direction of the adapter are in contact with each other, and the heat radiating portion is provided on the side surface of the housing, heat from the board on which the LED is mounted is transmitted to the adapter, and further It can be transferred to the body and dissipated by the heat dissipation part. Thereby, a board | substrate can be cooled without using components separately, and luminous efficiency can be improved.

  Furthermore, the lighting fixture of this invention has the structure which the ceiling side edge part of the said housing | casing has touched the said ceiling in the attachment state.

  With this configuration, the end on the ceiling side of the housing is in contact with the ceiling, so that heat from the substrate on which the LED is mounted is transmitted to the ceiling via the adapter and the housing and dissipated. In addition, since the end of the casing on the ceiling side is in contact with the ceiling, insects and dust can be prevented from entering the lighting apparatus.

  The present invention supplies power to a power supply circuit through a conductive portion coupled to a blade and generates power by coupling connection terminals of the power supply circuit to connection pins of a board on which an LED is mounted. As the lighting fixture is turned on and connected, the electrical components inside the lighting fixture can be connected without using electric wires, and the lighting fixture can be made thinner, reducing the number of assembly steps and cost. The lighting fixture which has the effect that it can achieve can be provided.

The disassembled perspective view which shows the lighting fixture of embodiment which concerns on this invention (A) is a top view of a lighting fixture, (B) is sectional drawing along the BB line in (A). Side view showing the housing removed Cross-sectional view showing the shape of the blade and integral molding Cross section of locking mechanism Cross-sectional view of a conventional lighting fixture

Hereinafter, the lighting fixture of embodiment of this invention is demonstrated using drawing.
As shown in FIG. 1, a lighting fixture 10 according to an embodiment of the present invention is attached to a ceiling ceiling 50 attached to a ceiling 11 (see FIG. 2B), which is a mounted portion, for example. 11 can be used.
The luminaire 10 includes a pair of blades 21 attached to the hook ceiling 50, an adapter 20 integrally provided with the blades 21, a board 30 on which an LED package 31 having LEDs is mounted, and power to the board 30. A power supply circuit 22 to be supplied, and a housing 40 for housing the adapter 20, the blade 21, the power supply circuit 22, and the substrate 30.

  As shown in FIG. 2A, the hooking ceiling 50 has, for example, a rectangular box-shaped hooking sealing main body 51, and the bottom plate 52 of the main body 51 has a circle with the same radius around the center of the bottom plate 52. A pair of arc-shaped notches 53 are provided. The pair of arcuate cutouts 53 are provided point-symmetrically with respect to the center, and an insertion port 53 a that is widened inward is provided at one end of each arcuate cutout 53. Note that electrodes 54 connected to a commercial power source are provided on the inner edge of each arc-shaped notch 53, respectively.

  As shown in FIG. 1, the adapter 20 has a disk-shaped bottom plate 23, and a vertical wall 24 perpendicular to the bottom plate 23 is provided on the outer peripheral edge of the bottom plate 23. On the outer peripheral surface of the vertical wall 24, a screw portion 24a for attaching to the housing 40 is formed. In the center portion of the adapter 20, an accommodation portion 25 that accommodates the hook ceiling 50 so as to be rotatable by a predetermined angle is provided. A pair of thread blades 21, 21 are attached to the inside of the accommodating portion 25 on the upper surface 23 c of the bottom plate 23 by being integrally formed with a predetermined distance.

In the vicinity of the accommodating portion 25 of the adapter 20, a conduction box 26 for providing conduction between the blade 21 and the power supply circuit 22 is provided so as to protrude upward by integral molding. The conduction box 26 is divided into two parts by a partition 26a, and the insulation of the pair of blades 21 and 21 inserted into the conduction box 26 is maintained. Further, the bottom plate 23 is provided with a notch 23a for connecting the power supply circuit 22 and the substrate 30 (see FIG. 2A).
Note that the adapter 20 is preferably made of a metal having good thermal conductivity.

  As shown in FIGS. 1 and 4, the blade 21 includes a flat plate-like insert portion 21a integrally formed with the bottom plate 23 of the adapter 20, and a claw support portion in which one end portion of the insert portion 21a is bent at a right angle. 21b and a hooking claw 21c obtained by bending the upper end portion of the claw support portion 21b in parallel with the insert portion 21a. As shown in FIG. 2, the hooking claw 21 c is inserted into the hooking ceiling 50 from the insertion port 53 a of the arcuate cutout 53 of the hooking ceiling 50, and is rotated along the arcuate cutout 53 by rotating the adapter 20. Move to contact the electrode 54. As a result, the blade 21 is supported by the hook ceiling 50 and is electrically connected to receive power.

  Moreover, as shown in FIG. 4, the blade 21 has a conductive portion 21d obtained by bending the other end of the insert portion 21a at a right angle. As shown in FIG. 2 (B), the conductive portion 21d is accommodated in the conduction box 26 adjacent to the accommodating portion 25 and exposed upward. The conductive portion 21d is connected to the power supply circuit 22 and supplies power to the power supply circuit 22 (see).

As shown in FIGS. 1 and 2, a lock mechanism 27 is provided in the vicinity of the hooking ceiling 50 in the mounted state inside the housing portion 25 in order to prevent the hooking ceiling 50 from falling off.
As shown in FIG. 5, the lock mechanism 27 has a lock claw 27 a that prevents the hook ceiling 50 from rotating. The lock claw 27 a is provided in a recess 25 a provided in the housing portion 25, and is always urged upward by a spring 27 b so that the lock claw 27 a can be projected and retracted on the upper surface 23 c of the bottom plate 23. A block 27c for unlocking is integrally provided at the lower side of the side surface of the lock claw 27a, and has an inclined surface 27d.

  In addition, a lever passage 28 is provided in the accommodating portion 25 so as to communicate with the recess 25a, and a release lever 27e for releasing the lock is provided in the lever passage 28 so as to be reciprocally movable. The release lever 27e has a slope 27f parallel to the slope 27d of the block 27c at one tip, and the other tip of the release lever 27e protrudes from the lever passage 28 with the slope 27f in contact with the slope 27d. Have

  Therefore, when releasing the locked state shown in FIG. 5, the release lever 27e is pushed into the lever passage 28 (arrow A in FIG. 5), and the slope 27d of the block 27c is pushed downward by the slope 27f at the tip. The lock claw 27a is lowered (arrow B in FIG. 5). Thereby, the adapter 20 can rotate with respect to the hooking ceiling 50, and the cutting blade 21 can be detached from the hooking ceiling 50.

As shown in FIGS. 1 and 2, the power supply circuit 22 is placed on one surface of the top surface of the adapter 20 on the ceiling side, that is, on the bottom plate 23 of the adapter 20 so as to fit in a gap 20 a formed between the adapter 20 and the ceiling 11. It is attached to the upper surface 23c. The power supply circuit 22 has a substantially rectangular box shape, and has a concave portion 22 a for accommodating the conduction box 26 on the side surface facing the accommodating portion 25 of the adapter 20. The recess 22a is provided with a pair of power receiving terminals 22b and 22b, and is exposed downward from the upper surface 22c of the recess 22a.
Therefore, when the power supply circuit 22 is attached to the upper surface 23 c of the bottom plate 23, the power receiving terminal 22 b of the power supply circuit 22 is attached to the conduction box 26 by attaching the conduction box 26 from above so that the conduction box 26 is fitted in the recess 22 a of the power supply circuit 22. It enters the inside and comes into contact with the conductive portion 21d of the blade 21 to conduct.

  Further, an L-shaped passage 22d is provided on the end face of the power supply circuit 22, and a downward leading end portion 22e is opened downward. The front end portion 22 e protrudes downward from the bottom surface of the power supply circuit 22 and is inserted into the notch 23 a of the bottom plate 23 when the power supply circuit 22 is attached to the bottom plate 23 of the adapter 20. A pair of connection terminals 22f and 22f are provided in the front end portion 22e facing downward.

As shown in FIGS. 1 and 2, the board 30 on which the LEDs are mounted has a disk shape, and is a substantially horizontal surface opposite to the ceiling mounting surface of the adapter 20, that is, the lower surface 23 b of the bottom plate 23 of the adapter 20. (See FIG. 3). A large number of LED packages 31 having LEDs (not shown) are provided on the upper surface of the substrate 30, and a pair of connection pins 32, 32 electrically connected to the LED packages 31 are provided to protrude upward. Yes. The connection pin 32 protrudes from the upper surface 23 c of the bottom plate 23 through the notch 23 a of the bottom plate 23 of the adapter 20 in a state where the substrate 30 is attached to the adapter 20.
Accordingly, when the tip 22e of the passage 22d of the power supply circuit 22 is inserted into the notch 23a of the bottom plate 23 and the power supply circuit 22 is attached to the bottom plate 23 of the adapter 20, the connection terminal 22f of the passage 22d of the power supply circuit 22 and the board 30 The contact pin 32 is brought into contact with and becomes conductive. Thereby, electric power is supplied to the substrate 30.

As shown in FIGS. 1 and 2, the housing 40 has a cylindrical peripheral wall 41 having an opening at the lower end, and accommodates the adapter 20 and the substrate 30 therein. On the inner peripheral surface 41a of the peripheral wall 41, there is provided a screw portion 42 into which the screw portion 24a provided on the vertical wall 24 of the adapter 20 is screwed. A heat radiating portion 44 that radiates heat from the substrate 30 is provided on the outer peripheral surface of the peripheral wall 41. It is desirable to provide unevenness on the surface of the heat radiating portion 44 to increase the surface area. A transparent cover 43 is attached to the opening. Moreover, it is desirable that the housing 40 be made of metal having a good thermal conductivity.
Therefore, since the housing 40 is attached to the adapter 20 by screwing the screw portion 24a of the adapter 20 and the screw portion 42 of the housing 40, the peripheral wall 41 which is a side surface portion of the housing 40 is the ceiling of the adapter 20. 11 and a vertical wall 24 which is an end face in the vertical direction.

Next, an operation for attaching the lighting fixture 10 to the ceiling 11 will be described.
The power supply circuit 22 is attached to the bottom plate 23 of the adapter 20, and the conductive portion 21 d of the blade 21 and the power receiving terminal 22 b of the power supply circuit 22 are electrically connected, and the tip 22 e of the passage 22 d of the power supply circuit 22 is connected to the bottom plate 23 of the adapter 20. Is inserted into the notch 23a. Then, the substrate 30 is attached to the lower surface 23b of the bottom plate 23 of the adapter 20, and the connection terminal 22f of the passage 22d of the power supply circuit 22 and the connection pin 32 of the substrate 30 are made conductive.

  Next, the housing 40 is attached to the adapter 20 by screwing the screw portion 42 of the inner peripheral surface 41 a of the housing 40 into the screw portion 24 a of the vertical wall 24 of the adapter 20. At this time, it is desirable that the upper end surface 41b of the peripheral wall 41 which is the ceiling side end portion of the housing 40 is in contact with the ceiling 11 in the attached state (see FIG. 2B).

  When removing the luminaire 10 from the ceiling ceiling 50 of the ceiling 11, the housing 40 is rotated and removed from the adapter 20, and the adapter 20 is rotated while pressing the release lever 27 e protruding outside the adapter 20. That is, since the release lever 27e lowers the lock claw 27a, the lock is released, and the adapter 20 can rotate relative to the hooking ceiling 50. As a result, the adapter 20 is rotated to pull out the hooking claw 21 c of the blade 21 from the insertion opening 53 a of the arcuate cutout 53 of the hooking ceiling 50.

  As described above, according to the luminaire 10 according to the embodiment of the present invention described above, the hooking claw 21c of the blade 21 receives power from the electrode 54 of the hooking ceiling 50, and the power supply circuit via the conductive portion 21d of the blade 21. In addition to supplying power directly to the power receiving terminal 22b of 22 and the connection terminal 22f of the power supply circuit 22 being coupled to the connection pin 32 of the substrate 30, the power is directly supplied to the substrate 30. The connection can be made without using an electric wire. Thereby, while being able to aim at thickness reduction of the lighting fixture 10, the reduction of an assembly man-hour and cost can be aimed at.

  Further, since the blade 21 is integrally formed with the adapter 20, a conventionally required holder for fixing the adapter becomes unnecessary, and the number of parts can be reduced. In addition, since the power supply circuit 22 is disposed in the gap 20a between the ceiling 11 and the adapter 20, the lighting fixture 10 can be reduced in thickness, weight, and cost.

  Moreover, since the lock mechanism 27 prevents the adapter 20 from rotating with respect to the hooking ceiling 50, the luminaire 10 can be prevented from falling off. Further, since the lock mechanism 27 can be released by the release lever 27e, the luminaire 10 can be removed.

  Further, since the substrate 30 on which the LED package 31 is mounted is in contact with the lower surface 23b of the bottom plate 23 of the adapter 20, the heat from the substrate 30 can be radiated to the adapter 20 side, and the substrate can be used without using additional components. 30 can be cooled to improve luminous efficiency.

  Further, since the peripheral wall 41 of the housing 40 and the vertical wall 24 of the adapter 20 are in contact with each other, and the heat dissipating portion 44 is provided on the peripheral wall 41 of the housing 40, the heat from the substrate 30 is transmitted to the adapter 20, and further The heat is transmitted to the body 40 and can be radiated by the heat radiating portion 44. Thereby, the board | substrate 30 can be cooled without using components separately, and luminous efficiency can be improved.

  Furthermore, since the upper end surface 41b of the peripheral wall 41 of the housing 40 is in contact with the ceiling 11, the heat from the board 30 on which the LEDs are mounted is transmitted to the ceiling 11 via the adapter 20 and the housing 40 to be dissipated. . In addition, since the upper end surface 41b of the peripheral wall 41 is in contact with the ceiling 11, insects and dust can be prevented from entering the interior of the lighting fixture 10.

  In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Ceiling 20 Adapter 20a Clearance 21 Blade 21c Hook 21d Conductive part 22 Power supply circuit 22f Connection terminal 23 Bottom plate (one surface of ceiling side upper surface)
23b Bottom surface (a substantially horizontal surface opposite to the ceiling mounting surface)
24 Vertical wall (end surface perpendicular to the ceiling)
27 Lock mechanism 27e Release lever 30 Substrate 32 Connection pin 40 Case 41 Peripheral wall (side surface)
41b Upper end surface (end on the ceiling side of the housing)
44 Heat radiation part 50 Catch ceiling

Claims (6)

With a blade
An adapter provided with the blade,
A power circuit;
A board on which an LED is mounted;
The blade, the adapter, the power supply circuit, and a housing for storing the substrate,
The blade has a hooking claw that is hooked and fixed to a hooking ceiling fixed to the ceiling,
The adapter includes a conductive portion that is coupled to the blade and supplies power to the power supply circuit.
The said power supply circuit is provided with the connection terminal which supplies a power supply to the said board | substrate by couple | bonding with the connection pin provided in the said board | substrate, The lighting fixture characterized by the above-mentioned. The blade is integrally formed with the adapter,
The lighting apparatus according to claim 1, wherein the power supply circuit is mounted on one surface of the upper surface on the ceiling side of the adapter so as to fit in a gap formed between the adapter and the ceiling.   The illumination according to claim 1, wherein the adapter includes a lock mechanism that prevents the adapter from rotating with respect to the hook ceiling, and a release lever that releases the lock mechanism. Instruments.   4. The device according to claim 1, wherein the substrate on which the LED is mounted and the substantially horizontal one side opposite to the ceiling mounting surface of the adapter are attached so as to substantially contact each other. 5. The lighting fixture as described in.   A heat dissipating part that dissipates heat from the substrate on which the LED is mounted is provided on a side surface of the housing, and the side surface of the housing is in contact with an end surface of the adapter that is perpendicular to the ceiling. The lighting fixture according to any one of claims 1 to 4.   The lighting fixture according to any one of claims 1 to 5, wherein the ceiling-side end portion of the casing is in contact with the ceiling when the lighting fixture is attached.

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