JP2011154888A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture capable of easily mounting a cover on a lamp mounting adapter and improving workability. <P>SOLUTION: In the lighting fixture, a male thread 48 is formed along an outer peripheral surface of the lamp mounting adapter 22. A plurality of mounting pieces 97 capable of elastically deforming outside in a radial direction are arranged on a cover 23. A female thread 100 screwed with the male thread 48 of the lamp mounting adapter 22 is arranged on the mounting pieces 97. The plurality of mounting pieces 97 of the cover 23 are butted into the circumference of the lamp mounting adapter 22, and the female thread 100 is fitted to the male thread 48 of the lamp mounting adapter 22 while the mounting pieces 97 are widened by pushing up the cover 23. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a luminaire attached to a hook ceiling.

  2. Description of the Related Art Conventionally, there is a lamp mounting adapter that allows a lamp having, for example, a GX53 type base to be mounted using a hook ceiling installed on a ceiling.

  This lamp mounting adapter is disk-shaped, and a pair of hooking claws that are mechanically and electrically attached to the hooking ceiling are projected on the upper surface, and a socket to which a lamp cap is attached is formed on the lower surface ( For example, see Patent Document 1.)

JP 2008-53058 A (page 4, FIG. 1)

  As described above, when a lamp is mounted to the hook ceiling via the lamp mounting adapter, the surroundings of the hook ceiling and the lamp mounting adapter are exposed and the appearance is impaired. It is conceivable to use a covering cover.

  In order to use this cover, if it is assumed that the cover is attached to the lamp mounting adapter, it is conceivable to mount it by screwing or screwing the cover around the lamp mounting adapter. It takes a lot of time to install it, and the laborious work must be done at a high place by climbing a stepladder or the like, resulting in poor workability.

  This invention is made | formed in view of such a point, and it aims at providing the lighting fixture which can attach a cover to the adapter for lamp attachment easily, and can improve workability | operativity.

  The lighting fixture according to claim 1, wherein an upper part is detachably attached to the hook ceiling, a lamp is detachably attached to the lower part, and a male screw is formed along the outer peripheral surface; and the lamp mounting adapter A plurality of mounting pieces provided with female threads that are threadedly engaged with the male threads, and these mounting pieces are elastically displaceable radially outward.

  The hook sealing may be any type such as an embedded type, a square shape, and a round shape.

  The lamp may be of any type using, for example, a GX53 type base or an E type base. The light source of the lamp may be any kind of semiconductor light emitting element such as LED or EL, or a fluorescent tube.

  The male screw of the lamp mounting adapter may be provided continuously around the entire outer peripheral surface of the lamp mounting adapter, or may not be provided in a part of the outer peripheral surface of the lamp mounting adapter.

  For example, the cover may be formed in a cylindrical shape with an elastically deformable resin or the like, and may cover the periphery of the hook ceiling and the lamp mounting adapter.

  The cover can be attached to the lamp mounting adapter as long as at least two cover mounting pieces are provided at opposite locations in the circumferential direction. Preferably, three cover mounting pieces are provided to the lamp mounting adapter. The mounting is stable, and the mounting to the lamp mounting adapter is more stable by providing more than three.

  The internal thread of the mounting piece may be at least one pitch, but may be several pitches.

  According to a second aspect of the present invention, in the luminaire according to the first aspect, the female threads of the plurality of mounting pieces are respectively engaged with screw threads at different pitch positions in the height direction of the male thread of the lamp mounting adapter. Are provided at different pitch positions in the height direction.

  All of the female threads of the plurality of mounting pieces may be provided at positions with different pitches in the height direction, and among the plurality of mounting pieces, a plurality of sets of mounting pieces provided at different pitch positions in the height direction are provided. There may be.

  The lighting fixture according to claim 3 is the lighting fixture according to claim 1 or 2, wherein the male screw of the lamp mounting adapter is formed in a thread having a horizontal cross-sectional shape on the upper surface.

  The upper surface of the male screw may be absolutely horizontal, or may not be absolutely horizontal as long as it is closer to the horizontal than the upper surface of a normal screw thread.

  According to the lighting apparatus of claim 1, the cover has a plurality of mounting pieces provided with female threads that are screwed into the male threads of the lamp mounting adapter, and these mounting pieces are elastically displaceable radially outward. Therefore, just by pushing up the cover against the lamp mounting adapter attached to the hook ceiling, the female screw can be screwed onto the male screw of the lamp mounting adapter while multiple mounting pieces are spread out, allowing one-touch mounting of the cover The workability can be improved.

  According to the luminaire described in claim 2, in addition to the effect of the luminaire described in claim 1, the female threads of the plurality of mounting pieces are threaded at different pitch positions in the height direction of the male threads of the lamp mounting adapter. Since the cover is provided at different pitch positions in the height direction so as to be screwed to each other, the cover can be prevented from rotating in the direction in which the screw is loosened with respect to the lamp mounting adapter due to the influence of vibration, etc. When the cover is pushed up and attached to the lamp mounting adapter, it can be operated with a relatively light force and attached to the male thread of the lamp mounting adapter that is attached to a type of hook ceiling with a different height from the installation surface. The female screw of the piece can be reliably screwed together.

  According to the luminaire described in claim 3, in addition to the effect of the luminaire described in claim 1 or 2, the male screw of the lamp mounting adapter is formed by a thread having a cross-sectional shape with a horizontal upper surface. The cover's female screw is hard to come off and the cover can be securely held.

It is a perspective view of the adapter for lamp attachment and the cover of the lighting fixture which shows the 1st Embodiment of this invention. It is sectional drawing of a lighting fixture same as the above. It is a disassembled perspective view of a lighting fixture same as the above. It is sectional drawing of the screwing part of the adapter for lamp attachment and the cover of the lighting fixture which shows the 2nd Embodiment of this invention. It is a perspective view of the cover of the lighting fixture which shows the 3rd Embodiment of this invention. It is sectional drawing which shows the screwing part of the adapter for lamp attachments of a lighting fixture same as the above, and a cover to (a)-(c).

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

  1 to 3 show a first embodiment.

  2 and 3, reference numeral 11 denotes a lighting fixture, and this lighting fixture 11 is attached to a hook ceiling 13 that is installed in advance on an installation surface 12 such as a ceiling surface.

  The hook ceiling 13 is a disk-shaped embedded hook ceiling having a low height from the installation surface 12, and a pair of connection holes 15 are formed on the lower surface at symmetrical positions with respect to the center of the hook ceiling 13. These connection holes 15 are formed as arc-shaped long holes along the same circumference with respect to the center of the hook ceiling 13, and a wide portion having a wide hole width is formed at one end. Inside each connection hole 15, a pair of terminals (not shown) to which a power line wired to the hooking ceiling 13 is connected are arranged.

  The luminaire 11 uses a flat lamp 21 using a GX53 type base, and a lamp mounting adapter 22 for attaching the lamp 21 to the hook ceiling 13, a hook ceiling 13, a lamp mounting adapter 22 and A cover 23 that covers the lamp 21 and is attached to the lamp mounting adapter 22 is provided.

  The lamp 21 includes a disk-shaped lamp body 26. A GX53-type base 27 is provided on the upper surface side, which is one surface side of the lamp body 26, and a semiconductor light emitting element is provided on the lower surface side, which is the other surface side of the lamp body 26. A light emitting module (not shown) having the LED and a translucent cover 28 covering the light emitting module are provided, and the LED is turned on by receiving power supply from the base 27 inside the lamp body 26. A lighting circuit (not shown) is incorporated.

  The lamp body 26 is made of, for example, metal, and a plurality of radiating fins 29 are provided around it.

  A circular protrusion 30 projects from the center of the upper surface of the base 27, and a pair of lamp pins 31 project from the periphery of the upper surface at positions symmetrical to the center of the lamp 21. A large diameter portion 32 is formed at the tip of each lamp pin 31.

  The translucent cover 28 is made of synthetic resin or glass, has translucency and diffusibility, and has a disk-shaped front surface portion 28a facing the optical axis direction of the LED, and the periphery of the front surface portion 28a. The front surface portion 28a and the side surface portion 28b are configured as a light emitting portion 33 that emits light.

  Next, as shown in FIGS. 1 to 3, the lamp mounting adapter 22 includes a cylindrical adapter body 36, a hook ceiling mounting portion 37 provided on the upper side of the adapter body 36, and a lower side of the adapter body 36. The socket portion 38 is provided.

  The adapter body 36 is made of a synthetic resin having insulation properties, and includes a cylindrical peripheral wall 41 and a partition wall 42 provided in an intermediate portion in the vertical direction inside the peripheral wall 41, and a hooking ceiling is provided above the partition wall 42. An upper storage portion 43 that stores the attachment portion 37 is formed, and a lower storage portion 44 that stores the socket portion 38 is formed below the partition wall 42.

  A release operation part 45 is formed on a part of the outer peripheral surface of the adapter body 36, and the release operation part 45 is formed with a notch part 46 in which a peripheral wall 41 is cut out and opened at a side position of the upper storage part 43. An inclined surface 47 that is inclined from the lower end of the outer peripheral surface of the adapter main body 36 toward the notch 46 is formed below the notch 46 and at a side position of the lower storage portion 44.

  A screw thread 49 of a spiral male screw 48 is formed on the outer peripheral surface of the adapter main body 36 along the outer peripheral surface of the adapter main body 36 except for the release operation portion 45. A flat portion 50 in which a part of the screw thread 49 is cut out in a flat shape is formed at one or a plurality of locations on the outer peripheral surface of the male screw 48.

  Further, the hooking ceiling mounting portion 37 includes a hooking sealing mounting portion main body 61 made of synthetic resin having insulation properties, and a disk-shaped upper surface portion 62 that closes the upper surface of the adapter main body 36 is attached to the hooking ceiling mounting portion main body 61. Further, a side surface portion 63 that protrudes downward from the peripheral edge of the upper surface portion 62 and is disposed inside the peripheral wall 41 of the adapter main body 36 and abuts against the partition wall 42 is formed. The hook ceiling mounting portion main body 61 is screwed and fixed to the adapter main body 36 with a screw that passes through the partition wall 42 from the lower storage portion 44 of the adapter main body 36.

  At the center of the upper surface portion 62, a hooking sealing cap portion 66 is provided. A pair of substantially L-shaped hooking claws 67 project from the hooking sealing cap portion 66 at symmetrical positions with respect to the center of the hooking ceiling mounting portion 37. On one side of the hooking claw 67, a lock claw 69 of a lock mechanism 68 built in the hooking sealing cap part 66 is disposed so as to be able to project and retract, and is biased in a protruding direction by a biasing member such as a spring (not shown). Has been. The lock mechanism 68 includes a release button 70 for forcibly burying the lock claw 69 against the bias. The hooking sealing cap 66 may be incorporated into the hooking ceiling mounting part main body 61 using an existing hooking sealing cap, or the hooking claw 67 and the lock mechanism 68 may be built into the hooking ceiling mounting part main body 61. Good.

  A groove portion 71 is formed in a part of the side surface portion 63 so as to be opposed to the notch portion 46 of the release operation portion 45 of the adapter main body 36, and a release button 70 is arranged in the groove portion 71.

  Further, the socket portion 38 corresponds to the connection of the GX53 type base, and includes a socket portion body 81 made of a synthetic resin having insulation properties. The socket portion body 81 is disposed on the lower surface of the adapter body 36. An annular lower surface portion 82 and a cylindrical portion 83 projecting upward from the inner peripheral edge of the lower surface portion 82 are formed. The protruding portion 30 of the base 27 of the lamp 21 attached to the socket portion 38 is fitted inside the cylindrical portion 83.

  A pair of connection holes 84 to which the lamp pins 31 of the lamp 21 are connected are formed in the lower surface portion 82 at positions symmetrical with respect to the center of the socket portion 38. These connection holes 84 are formed as arc-shaped long holes along the same circumference with respect to the center of the hooking ceiling 13, and a wide portion having a wide hole width is formed at one end. Inside each connection hole 84, a terminal (not shown) to which the lamp pin 31 of the lamp 21 is electrically connected is disposed. A terminal accommodating portion 85 is formed above each connection hole 84, that is, above the lower surface portion 82, and a pair of terminals to which the lamp pin 31 of the lamp 21 is electrically connected are accommodated in the terminal accommodating portion 85.

  On the upper surface of the lower surface portion 82, a boss 88 having a screw insertion hole 87 through which a screw for screwing the socket portion main body 81 to the adapter main body 36 is provided.

  The pair of hooking claws 67 of the hooking ceiling mounting portion 37 and the pair of terminals of the socket portion 38 are electrically connected by an electric wire (not shown) wired in the adapter main body 36.

  Next, the cover 23 is made of, for example, an insulating synthetic resin and includes a cylindrical outer cover 91 and a cylindrical inner cover 92 disposed inside the outer cover 91. The lower ends of the outer covers 91 And the lower end of the inner cover 92 are connected by an annular lower surface cover 93.

  At the upper end of the outer cover 91, a contact surface that is in contact with the installation surface 12 when the cover 23 is constructed is formed.

  On the lower side of the inner cover 92, a cylindrical reflecting surface portion 94 that is expanded downward and accommodates the lamp 21 is formed, and the upper side of the inner cover 92 is fitted around the lamp mounting adapter 22. A cylindrical fitting portion 95 is formed.

  A plurality of attachment pieces 97 separated along the circumferential direction by a plurality of slits 96 are formed in the fitting portion 95, and each attachment piece 97 can be elastically deformed radially outward. In the present embodiment, the fitting portion 95 is divided by six slits 96 at equal intervals, and six attachment pieces 97 are formed.

  The upper end of the slit 96 is opened to the upper end of the inner cover 92, and the lower end is disposed above the light emitting part 33 of the lamp 21.

  Each mounting piece 97 is formed with a bent portion 98 that bends from the upper end of the reflecting surface portion 94 toward the center of the cover 23, and a mounting portion 99 that extends upward from the upper end of the bent portion 98. On the inner peripheral surface of the portion 99, a thread 101 of the female screw 100 that is screwed into the male screw 48 of the lamp mounting adapter 22 is formed for one pitch.

  The inner diameter of the fitting portion 95, that is, the inner diameter of the mounting portion 99 of the mounting piece 97 facing each other through the center of the cover 23 is formed to be the same as or slightly smaller than the outer diameter of the thread 49 of the male screw 48 of the lamp mounting adapter 22. Yes.

  Next, the construction of the lighting fixture 11 will be described.

  First, the lamp mounting adapter 22 is attached to the hook ceiling 13. That is, the lamp mounting adapter 22 is pushed up, and the pair of hooking claws 67 of the lamp mounting adapter 22 are inserted into the wide portions of the pair of connection holes 15 of the hooking ceiling 13 from below, and then the lamp mounting adapter 22 is mounted in the mounting direction. By rotating a predetermined angle in the clockwise direction of FIG. 3, the pair of hooking claws 67 of the lamp mounting adapter 22 are hooked on the edge of the connection hole 15 and the terminals arranged inside the connection hole 15 Connect electrically. At this time, since the flat portion 50 is formed on the outer peripheral surface of the lamp mounting adapter 22, it is possible to prevent the hand from slipping when the lamp mounting adapter 22 is rotated, and the rotation operation is easy.

  When the lamp mounting adapter 22 is pushed up, the lock claw 69 comes into contact with the lower surface of the hooking ceiling 13, so that the lock claw 69 is pushed down and buried in the lamp mounting adapter 22. When the lamp mounting adapter 22 is rotated in the mounting direction to the predetermined mounting position with respect to the hooking ceiling 13 in this buried state, the lock claw 69 moves below the wide portion of the connection hole 15, and the lock claw 69 is moved. It protrudes upward and is inserted into the connection hole 15 to prevent the lamp mounting adapter 22 from rotating in the removal direction opposite to the mounting direction (counterclockwise direction in FIG. 3).

  Subsequently, the upper end of the fitting portion 95 of the cover 23 is applied to the periphery of the lamp mounting adapter 22, and the cover 23 is pushed up to cover the fitting portion 95 around the lamp mounting adapter 22. While the cover 23 is being pushed up, the thread 101 of the female thread 100 of the fitting portion 95 contacts the lower side of the thread 49 of the male screw 48 of the lamp mounting adapter 22, but each mounting piece constituting the fitting portion 95 Since 97 is elastically deformable radially outward, the thread 101 of the internal thread 100 gets over the thread 49 of the external thread 48 and fits above the thread 49.

  In this manner, the cover 23 is pushed up until the upper end of the outer cover 91 comes into contact with the installation surface 12 and stops. When the upper end of the outer cover 91 comes into contact with the installation surface 12 and stops, the cover 23 is rotated in the mounting direction (clockwise direction in FIG. 3), and the male screw 48 of the lamp mounting adapter 22 and the female screw 100 of the cover 23 are connected. By screwing, the outer cover 91 is tightened so that the upper end of the outer cover 91 is fixed to the installation surface 12 by pressure.

  Subsequently, the lamp 21 is inserted inside the cover 23, the pair of lamp pins 31 of the lamp 21 are inserted from below into the wide part of the pair of connection holes 84 of the lamp mounting adapter 22, and the lamp 21 is mounted in the mounting direction (FIG. 3). By rotating it by a predetermined angle in the clockwise direction), the large diameter portion 32 of the pair of lamp pins 31 of the lamp 21 is hooked on the edge of the connection hole 84 and electrically connected to the terminal disposed inside the connection hole 84. Connected.

  Thus, during construction, the cover 23 is designed for lamp mounting because the plurality of mounting pieces 97 provided with the female threads 100 that are screwed into the male threads 48 of the lamp mounting adapter 22 can be elastically displaced radially outward. By simply pushing up the cover 23 against the adapter 22, the female thread 100 can be screwed into the male thread 48 of the lamp mounting adapter 22 while the mounting pieces 97 are pushed and spread, enabling one-touch mounting of the cover 23. It can be improved.

  Further, since the plurality of attachment pieces 97 are provided on the inner cover 92 of the cover 23, the attachment pieces 97 are not exposed together with the hook ceiling 13 and the lamp attachment adapter 22, and the appearance can be improved.

  Then, when power is supplied to the lamp 21 from the hook ceiling 13 through the lamp mounting adapter 22, the LED of the lamp 21 emits light, and light is emitted from the translucent cover 28 that is the light emitting unit 33.

  At this time, since the lower end of the slit 96 of the cover 23 is provided above the light emitting portion 33 of the lamp 21, light is less emitted from the slit 96 toward the inside of the outer cover 91, and the upper end of the outer cover 91 is Light leakage from the installation surface 12 can be reduced.

  When the lamp 21 is removed, the lamp 21 is removed from the lamp mounting adapter 22 by rotating the lamp 21 downward by a predetermined angle in the removing direction (counterclockwise direction in FIG. 3). .

  When the luminaire 11 is removed from the hook ceiling 13, first, with the lamp 21 removed, the cover 23 is rotated in the removing direction (counterclockwise direction in FIG. 3) and the female screw 100 of the cover 23 is connected. The cover 23 is moved downward by screwing with the male screw 48 of the lamp mounting adapter 22, and the cover 23 is removed from the lamp mounting adapter 22.

  Subsequently, the release button 70 of the lamp mounting adapter 22 is operated, and the locking claw 69 is forcibly retracted from the connection hole 15 of the hooking ceiling 13, and the direction for removing the lamp mounting adapter 22 (the opposite direction of FIG. The lamp mounting adapter 22 is removed from the hooking ceiling 13 by rotating downward by a predetermined angle in the clockwise direction).

  In addition, although the case where the six attachment pieces 97 of the cover 23 were provided was shown, it can be attached to the lamp attachment adapter 22 as long as at least two attachment pieces 97 are provided in the circumferential direction. However, it is preferable that the mounting to the lamp mounting adapter 22 is stable by providing three, and the mounting to the lamp mounting adapter 22 is more stable by providing more than three.

  Next, FIG. 4 shows a second embodiment.

  The thread 49 of the male thread 48 of the lamp mounting adapter 22 is formed such that the upper surface 49u of the thread 49 has a horizontal cross-sectional shape.

  With this configuration, the screw thread 101 of the female screw 100 of the cover 23 is caught with the screw thread 49 of the male screw 48 of the lamp mounting adapter 22, and the female screw 100 of the cover 23 is difficult to be removed. Can be retained.

  Note that the thread 23 of the female thread 100 of the cover 23 can be more securely held to the lamp mounting adapter 22 if the lower surface of the thread 101 is formed in a horizontal cross-sectional shape.

  Next, FIGS. 5 and 6 show a third embodiment.

  The female threads 100 of the plurality of mounting pieces 97 are provided at positions with different pitches in the height direction so as to be respectively screwed with the threads 49 at different pitch positions in the height direction of the male threads 48 of the lamp mounting adapter 22. ing.

  For example, among the six mounting pieces 97, three sets of mounting pieces 97a, 97b, and 97c that face each other are provided. As shown in FIG. 6A, the mounting piece 97a has a screw thread at the lowest position of the male screw 48. A thread 101a is provided so as to be engaged with 49a, and as shown in FIG. 6 (b), the mounting piece 97b has a position one pitch higher than the lowest thread 49a of the male thread 48. A thread 101b is provided so as to be engaged with the thread 49b, and as shown in FIG. 6 (c), the mounting piece 97c is two pitches higher than the lowest thread 49a of the male thread 48. A thread 101c is provided so as to be screwed into the position thread 49c.

  With this configuration, it is possible to prevent the cover 23 from rotating in the direction in which the screwing is loosened with respect to the lamp mounting adapter 22 due to the influence of vibration or the like. Further, the cover 23 is pushed up to raise the lamp mounting adapter 22. A female screw 100 of at least one mounting piece 97 with respect to a male screw 48 of a lamp mounting adapter 22 that can be operated with a relatively light force when mounted on the lamp and mounted on a hook ceiling 13 of a different height from the installation surface 12. Can be reliably screwed together.

11 Lighting equipment
13 Catch ceiling
21 Lamp
22 Lamp mounting adapter
23 Cover
48 Male thread
49 Thread
49u surface
97 Mounting piece
100 female thread
101a, 101b, 101c thread

Claims (3)

A lamp mounting adapter having an upper part removably attached to the hook ceiling, a lamp removably attached to the lower part, and a male screw formed along the outer peripheral surface;
A cover having a plurality of mounting pieces provided with female threads that are threadedly engaged with the male threads of the lamp mounting adapter, the mounting pieces being elastically displaceable radially outward;
The lighting fixture characterized by comprising. The female screws of the plurality of mounting pieces are provided at different pitch positions in the height direction so as to be respectively screwed into the threads at different pitch positions in the height direction of the male thread of the lamp mounting adapter. The lighting fixture according to claim 1. 3. The lighting device according to claim 1, wherein the male screw of the lamp mounting adapter has an upper surface formed into a thread having a horizontal cross-sectional shape.

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