JP2012109054A - Lighting fixture - Google Patents

Abstract

An object of the present invention is to provide a luminaire that can be operated with a simple operation when the luminaire main body is attached to or detached from an adapter.
The present invention has an attachment portion 5 having an engagement port 51 facing a wiring device Cb installed on a device attachment surface C, and an opening 71 at a substantially central portion facing the engagement port 51, A light guide plate 7 having a light incident end surface 72 on the outer periphery, a light emitting element 61 disposed so that outgoing light is incident on the light incident end surface 72 of the light guide plate 7, and the engagement port 51. It is a lighting fixture provided with the cover member 10 which has the translucency which covers the engagement port 51 so that opening and closing is possible.
[Selection] Figure 10

Description

  Embodiments of the present invention relate to, for example, a luminaire that performs illumination using a light guide plate using a light emitting element such as an LED as a light source.

  Recently, along with the high output, high efficiency, and widespread use of LEDs, lighting fixtures that can be used indoors or outdoors using LEDs as light sources have been developed. This luminaire is obtained by mounting a plurality of LEDs on a substrate so as to obtain a predetermined amount of light. For example, the luminaire is used as a so-called direct-attach type base illumination that is directly attached to a ceiling surface or the like.

  However, the light emitted from the LED has high directivity and is likely to cause glare, and uneven brightness tends to occur. Therefore, in order to suppress glare and improve the uniformity of the light emitting surface, a new lighting fixture that performs illumination using a light guide plate has been developed.

  In the case of such a lighting fixture, for example, an adapter is electrically and mechanically connected to a hanging sealing body as a wiring fixture installed on a ceiling surface for a general house, and the lighting fixture is attached to the adapter via a mounting portion. In the type to which the main body is attached, substantially the entire lower surface of the luminaire main body is covered with the light guide plate.

JP 2009-21200 A JP 2009-283197 A

  However, in the above-described lighting fixture, when the lighting fixture main body is attached to or detached from the adapter, the light guide plate must be removed for the operation of the adapter.

  In this type of lighting fixture using a light guide plate, the light incident end face and the light source such as an LED need to be opposed to each other so that light emitted from the light source such as an LED enters the light incident end face of the light guide plate. When the operation is involved, there arises a problem that the configuration becomes complicated.

  In addition, even if the lighting fixture does not use a light guide plate, when attaching or removing the lighting fixture main body to the adapter, work is performed by removing the relatively large shade that covers substantially the entire lower surface of the lighting fixture main body. There must be.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a luminaire that can be operated with a simple operation when the luminaire main body is attached to or detached from the adapter.

  A lighting fixture according to an embodiment of the present invention has an attachment portion having an engagement port facing a wiring fixture installed on a fixture attachment surface, an opening in a substantially central portion facing the engagement port, and light on an outer peripheral portion. And a light guide plate having an incident end face.

  A light-emitting element disposed so that outgoing light is incident on the light incident end face of the light guide plate; and a translucent cover member that faces the engagement port and covers the engagement port so that the engagement port can be opened and closed. .

  According to the embodiment of the present invention, it is possible to provide a luminaire that can be operated with a simple operation when the luminaire main body is attached or detached.

It is a perspective view which shows the lighting fixture which concerns on the 1st Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the same lighting fixture. It is a perspective view which shows the same instrument main body seeing from the back side. FIG. 4 is a cross-sectional view taken along line XX in FIG. 3. It is an enlarged view which shows the A section in FIG. It is an enlarged view which shows the B section in FIG. It is a perspective view which shows the attachment part (adapter guide) of the instrument main body. It is a perspective view which shows the cover member of the instrument main body. It is sectional drawing which shows the attaching part (adapter guide) and cover member in the instrument main body. It is sectional drawing which shows the attachment state to the ceiling surface of the lighting fixture. It is sectional drawing equivalent to FIG. 5 which shows the lighting fixture which concerns on the 2nd Embodiment of this invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In each figure, the wiring connection relationship using lead wires or the like is basically omitted. Moreover, the same code | symbol is attached | subjected to the same part in each figure, and the overlapping description is abbreviate | omitted.

  The lighting fixture of this embodiment is a form used by being attached to a hooking sealing body as a wiring fixture installed on the fixture mounting surface, and for example, indoor lighting is performed using a light guide plate.

  1 to 4, the lighting fixture is an adapter A (electrically and mechanically connected to a fixture body 1 and a hooking sealing body Cb as a wiring fixture installed on a ceiling surface C as a fixture mounting surface. 2 and FIG. 10 together) and an infrared remote control transmitter R. As shown in FIG. 1, the instrument body 1 is formed in a substantially square appearance, and the front side is a light irradiation surface and the back side is a mounting surface to the ceiling surface C.

  As representatively shown in FIG. 2, the fixture body 1 includes a lighting device 2, a support chassis 3, a center chassis 4, an adapter guide 5 as an attachment portion, a light source portion 6, a light guide plate 7, and an auxiliary device. A component unit 8, a main body frame 9, and a cover member 10 are provided. These components will be described sequentially.

  The lighting device 2 includes a box-shaped cover case formed of a metal material such as aluminum, a circuit board accommodated so as to be covered with the cover case, and a circuit component mounted on the board. It is designed to be connected to a commercial AC power source via A, and receives this AC power source to generate a DC output. Therefore, the lighting device 2 is electrically connected to the light source unit 6 described later, supplies the direct current output to the light emitting element 61, and controls the lighting of the light emitting element 61. The lighting device 2 is mounted on the back side of the support chassis 3 (see FIG. 3).

  The support chassis 3 is formed in a substantially square shape from a metal material such as aluminum, and has a square-shaped shallow dish-shaped concave portion 31. Each side of the concave portion 31 is bent and extended outwardly in a step shape. A mounting piece 32 is formed. The front surface side of the recess 31 is configured as a support surface that supports the light guide plate 7, and a rectangular opening 33 is formed in a substantially central portion.

  The center chassis 4 is formed in a substantially rectangular parallelepiped box shape from a metal material such as a cold-rolled steel plate. One end side (the lower side in the drawing) is opened, and each open side is horizontal toward the outside. A hook-shaped contact portion 41 extending in the direction is formed. A circular opening 42 is formed on the other end side (upper side in the drawing). Therefore, the center chassis 4 has a rectangular parallelepiped shape as a whole. The abutting portion 41 is a portion that abuts on the back side of the light guide plate 7 via the support chassis 4, and the opening 42 is a portion through which the adapter A is inserted. As shown in FIG. 5, the contact portion 41 of the center chassis 4 is arranged so as to be superposed on the periphery of the opening 33 in the support chassis 3 from above, and this is fixed by a fixing means. The contact portion 41 of the center chassis 4 has a function of reinforcing the light guide plate 7.

  The adapter guide 5 as the mounting portion is formed in a rectangular parallelepiped shape having a low height as a whole, like the center chassis 4, as shown in FIG. 5, FIG. 7 and FIG. An engaging port 51 through which the adapter A is inserted and engaged is provided, and a flange portion 52 is formed on the lower end side. The adapter guide 5 is disposed and attached such that the outer peripheral surface thereof is in contact with the inner peripheral surface of the center chassis 4. The adapter guide 5 includes an attaching / detaching mechanism to which a cover member 10, which will be described in detail later, is detachably attached.

  As shown in FIGS. 2, 4, and 6, the light source unit 6 includes a substrate 62 on which the light emitting element 61 is mounted and an attachment plate 63 as an attachment member to which the substrate 62 is attached.

  The substrate 62 is formed of a horizontally long rectangular and glass epoxy resin flat plate as an insulating material, and a wiring pattern formed of copper foil is applied on the surface side. Further, a resist layer is appropriately applied. Note that when the material of the substrate 62 is an insulating material, a ceramic material or a synthetic resin material can be applied. Furthermore, when it is made of metal, a metal base substrate in which an insulating layer is laminated on one surface of a base plate having good thermal conductivity such as aluminum and excellent heat dissipation may be applied.

  The light emitting element 61 is an LED, which is a surface mount type LED package. A number of LED packages are mounted and arranged in a straight line along the longitudinal direction of the substrate 62. The LED package is generally composed of an LED chip disposed in a main body formed of ceramics, and a translucent resin for molding such as an epoxy resin or a silicone resin that seals the LED chip. Yes.

  The LED chip is a blue LED chip that emits blue light. In the translucent resin, a phosphor is mixed, and in order to be able to emit white light, a yellow phosphor that emits yellow light that is complementary to blue light is used. Yes.

  In addition, LED may be made to mount an LED chip directly on the board | substrate 62, and you may make it mount a bullet-type LED, and a mounting system and a format are not exceptionally limited.

  The mounting plate 63 is made of a material having good heat conduction, such as aluminum or galvanized steel plate, and is horizontally long and has a substantially C-shaped side surface. A substrate 62 is attached to the inner side wall of the attachment plate 63 by screwing or the like so that the back side thereof is in close contact. Therefore, the light source unit 6 is unitized by attaching the substrate 62 to the mounting plate 63.

  In the present embodiment, as shown mainly in FIG. 2, two unitized light source sections 6 are used, and are arranged corresponding to two opposing sides of the light guide plate 7. Yes. The unitized light source unit 6 may be arranged so as to correspond to each side of the light guide plate 7 and can be appropriately selected according to the design.

  The light guide plate 7 is formed in a rectangular flat plate shape using a material having high transmittance such as acrylic resin, and a dot pattern made up of a large number of white reflective dots that diffuse light is formed on the entire back side by printing. And a reflection sheet is provided. A diffusion sheet is provided on the entire front side. Furthermore, a rectangular opening 71 is formed at a substantially central portion of the light guide plate 7 so as to correspond to the outer shape of the adapter guide 5 and to correspond to the adapter A. Further, each side of the rectangular shape that is the outer peripheral portion of the light guide plate 7, that is, the side end surface, functions as a light incident end surface 72 through which light emitted from the light emitting element 61 is incident and travels in the light guide plate 7. It has become.

  The auxiliary component unit 8 includes a unit substrate and a plurality of electrical auxiliary components mounted on the substrate in a horizontally long box-like case. The electrical auxiliary parts in this embodiment are an infrared remote control signal receiver, an illuminance sensor, a nightlight as an auxiliary light source, a switch, a monitor lamp, and the like.

  The auxiliary component unit 8 is disposed on the outer peripheral edge of the lighting fixture, that is, the fixture main body 1, specifically, on the outer peripheral edge of the main body frame 9. Accordingly, the light guide plate 7 is disposed outside the light emitting region. The auxiliary component unit 8 configured in this manner is provided with a plurality of electrical auxiliary components in a centralized manner, and is attached to the main body frame 9.

  The main body frame 9 is made of a synthetic resin such as ABS resin or polycarbonate, has a substantially square shape and is formed in a frame shape larger than the dimension of the light guide plate 7, and includes a side wall 91 and a lower end of the side wall 91. And a bottom wall 92 having an inclined portion extending obliquely downward from the portion toward the inside and rising obliquely toward the inside. A plurality of bosses 93 are erected on the bottom wall 92, and the attachment pieces 32 of the support chassis 3 are screwed to the bosses 93.

  As shown with reference to FIGS. 5, 8, and 9, the cover member 10 is formed from a synthetic resin material having translucency such as acrylic resin or polycarbonate so that the front side is convex. ing. In addition, a large number of irregularities that perform a diffusive function are formed on the front surface. The cover member 10 is attached to the adapter guide 5 and covers the engagement port 51 so as to be openable and closable so as to face the engagement port 51, and can be removed.

  Here, the attachment / detachment mechanism between the cover member 10 and the adapter guide 5 will be described with reference to FIGS. 5 and 7 to 9. First, as shown in FIGS. 8 and 9, a pair of pivots 10 a are formed to protrude from a corner portion on one side of the back side of the cover member 10. In addition, a pair of position restricting protrusions 10b are provided in the middle portion of the same side portion. Further, a latching operation knob 10d having a U-shaped elastically deformable side surface having a latching claw 10c is provided at a substantially central portion of the other side facing the one side.

  On the other hand, as shown in FIGS. 7 and 9, bent guide holes 5 a are formed in opposite side walls of the adapter guide 5. The guide hole 5a is composed of an introduction part 5a1 into which the pivot 10a of the cover member 10 is introduced and a holding part 5a2 to which the pivot 10a is locked and held when the cover member 10 is opened.

  Further, a locking groove 5b for locking the locking claw 10c of the locking operation knob 10d is formed in the central portion of the front wall (right side in the drawing). Furthermore, a pair of slits 5c are formed on the rear wall (on the left side in the drawing) to engage with the position restricting projection 10b.

  In such a configuration, when the cover member 10 is attached to the adapter guide 5, the pivot 10a of the cover member 10 is introduced from the introduction portion 5a1 of the guide hole 5a and is advanced to the holding portion 5a2. Thereafter, the cover member 10 is rotated in the closing direction with the pivot 10a as a fulcrum, and the locking claw 10c is locked in the locking groove 5b. In this state, as shown in FIG. 5, the engagement port 51 of the adapter guide 5 is covered with the cover member 10 and is in a closed state.

At this time, the position restricting protrusion 10b is properly engaged with the pair of slits 5c, so that the engaging claw 10c is engaged with the engaging groove 5b, and the cover member 10 can normally maintain the engaging port 51 in the closed state. become. However, if the position restricting projection 10b is not provided, the cover claw 10c may not be reliably locked in the locking groove 5b, that is, the cover member 10 may close the engagement port 51 at a halfway end. There is sex.
The position restricting protrusion 10b has a function for the cover member 10 to normally maintain the engagement port 51 in the closed state.

  Next, when the engagement port 51 of the adapter guide 5 is opened, as shown in FIG. 5, the locking operation knob 10d is operated in the direction of the arrow to unlock the locking claw 10c, and the cover member 10 is pivoted in the opening direction with the pivot 10a as a fulcrum. At this time, since the pivot 10a is locked and held by the holding portion 5a2 of the guide hole 5a, the cover member 10 is prevented from falling off the adapter guide 5 (see FIG. 10). Therefore, in the present embodiment, the pivot 10a of the cover member 10 and the guide hole 5a of the adapter guide 5, specifically, the holding portion 5a2 constitute fall prevention means.

  Further, in order to remove the cover member 10 from the adapter guide 5, the pivot 10a of the cover member 10 may be moved along the guide hole 5a, contrary to the case where the cover member 10 is attached to the adapter guide 5. .

  As described above, the cover member 10 is configured to cover the engagement port 51 so as to be openable / closable. Further, a configuration in which one end side is pivotally supported, and the engagement port 51 is opened and closed by rotating about the one end side as a fulcrum is applicable. The point is that the engagement port 51 can be in an open state and a closed state, and the adapter A can be operated when the engagement port 51 is in an open state.

  Subsequently, as shown in FIGS. 2 and 10, the adapter A is electrically and mechanically connected to the hooking sealing body Cb installed on the ceiling surface C by the hooking blade provided on the upper surface side. A substantially cylindrical shape is formed, and a pair of locking portions A1 are provided on both sides of the peripheral wall so as to always protrude to the outer peripheral side by a built-in spring. The locking portion A1 is immersed by operating a lever provided on the lower surface side. Further, a power cord (not shown) connected to the lighting device 2 is led out from the adapter A, and is connected to the lighting device 2 via a connector.

  The infrared remote control transmitter R transmits, for example, a specific coded infrared remote control signal in the form of a pulse with a frequency of 38 kHz. For example, an all-light button, a dimming button, a nightlight button, an off button, etc. Is provided. By operating the remote control transmitter R toward the auxiliary component unit 8, that is, the infrared remote control signal receiving unit, the light emission state of the light emitting element 61 in the light source unit 6, that is, control of all-light lighting, dimming lighting, extinguishing, etc. It can be performed.

  Next, the attachment state to the ceiling surface C of the lighting fixture comprised as mentioned above is demonstrated with reference to FIG. In the figure, the illustration of the power cord led out from the adapter A is omitted.

  As shown in FIG. 10, a hanging ceiling body Cb is installed on the ceiling surface C. The adapter A is electrically and mechanically connected to the hooking sealing body Cb. From this state, the cover member 10 is opened or removed, and the engagement port 51 is opened, and the engagement port 51 of the adapter guide 5 in the instrument body 1 is aligned with the adapter A, as shown by the arrow in the figure. The instrument main body 1 is pushed up from below by hand until it is securely engaged with the engagement port 51 of the adapter guide 5, and the attachment port 51 is covered with the cover member 10 to be in a closed state.

  Thereby, in the attachment state of the instrument main body 1, the adapter A is inserted through the opening 42 of the center chassis 4, and the engagement portion A 1 of the adapter A is engaged with the engagement port 51 of the adapter guide 5 to maintain the attachment state. .

  Further, when removing the instrument main body 1, it can be removed by opening or removing the cover member 10 and operating the lever provided on the adapter A to release the engagement of the locking portion A 1 of the adapter A.

  In such an instrument body 1, an opening 71 is formed in the light guide plate 7 and is not configured to cover substantially the entire lower surface of the instrument body 1 including the engagement port 51 of the adapter guide 5. Therefore, when the instrument body 1 is attached and removed, the cover member 10 is opened with respect to the engagement port 51 without removing the light guide plate 7 from the instrument body 1 for the operation of the adapter A, etc. Work can be done with simple operations. In addition, since the adapter guide 5 can be attached by being inserted through the opening 71 of the light guide plate 7, the instrument body 1 can be thinned.

  Further, in the mounting operation of the instrument main body 1, when the instrument main body 1 is pushed up from below by hand, the light guide plate 7 may be pushed up by hand to apply stress to deform the light guide plate 7. However, in the present embodiment, the center chassis 4 is formed with a contact portion 41 facing the back side of the light guide plate 7, and the contact portion 41 is provided on the back side of the light guide plate 7 via the support chassis 3. Since they are in contact, the function of reinforcing the light guide plate 7 can be achieved, and deformation of the light guide plate 7 can be suppressed. Furthermore, since the contact part 41 is arrange | positioned around the opening 71 of the light-guide plate 7, the suppression of a deformation | transformation of the light-guide plate 7 can be performed effectively.

When power is supplied to the lighting device 2 in the mounting state of the lighting fixture, the light emitting elements 61 are energized through the substrate 62, and each light emitting element 61 is lit. The light emitted from the light emitting element 61 enters the light incident end surface 72 of the light guide plate 7, and this incident light is totally reflected within the light guide plate 7 and spreads over the entire light guide plate 7, and is formed on the back side. The light diffused and reflected by the dot pattern composed of the reflective dots and further diffused and homogenized by the diffusion sheet on the front side is emitted from the front side. Further, a part of the light leaking from the light guide plate 7 is reflected by the reflection sheet and radiated to the front side so as to be reused.
Moreover, since the cover member 10 has translucency, the light which leaked from the light-guide plate 7 can be permeate | transmitted, and a feeling of darkness can be suppressed.

  Further, the heat generated from each light emitting element 61 is conducted from the back side of the substrate 62 to the mounting plate 63, conducted to the support chassis 3, and effectively dissipated over a wide area of the support chassis 3.

  As described above, according to the present embodiment, since the opening 71 is formed in the light guide plate 7 corresponding to the engagement port 51 of the adapter guide 5, the light guide plate 7 is attached when the instrument body 1 is attached to or removed from the adapter A. By operating the cover member 10 without removing it, it is possible to provide a lighting apparatus that can be operated with a simple operation and can be thinned.

Further, since the cover member 10 is provided with the fall prevention means, the cover member 10 can be prevented from falling when the cover member 10 is opened and closed. Furthermore, since the cover member 10 has translucency, a dark feeling can be suppressed.
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st Embodiment, or an equivalent part, and the overlapping description is abbreviate | omitted.

In this embodiment, the auxiliary component unit 8 is attached to the back side of the cover member 10. The auxiliary component unit 8 includes a unit substrate 82 and a plurality of electrical auxiliary components mounted on the substrate 82 in a box-like translucent case 81. The electrical auxiliary parts are an infrared remote control signal receiver, an illuminance sensor, a nightlight as an auxiliary light source, a switch, a monitor lamp, and the like. A human sensor or vibration unit may be provided.
The auxiliary component unit 8 is connected to the lighting device 2 through a connector 83 by a lead wire.

  According to such a configuration, the auxiliary component unit 8 can be disposed at a substantially central portion of the instrument body 1 and appearance can be improved. Further, since the lighting device 2 is located on the center side, the wiring length with the lighting device 2 can be shortened, and the wiring processing work is facilitated.

  Furthermore, the lead wire led out from the auxiliary component unit 8 is detachably connected by the connector 83, so that the connection by the connector 83 can also serve as a function for preventing the cover member 10 from falling. . Therefore, the fall prevention means and the fall prevention means explained in the first embodiment are prevented from being dropped twice.

  In addition, for example, the electrical auxiliary parts of the auxiliary part unit 8 are combined as an infrared remote control signal receiver and a nightlight, or an infrared remote controller signal receiver, an illuminance sensor and a nightlight, and the different types of auxiliary part units 8 are covered. By preparing what is provided in 10, it is possible to develop a plurality of models (select functions) by replacing the cover member 10.

Note that the case 81 constituting the auxiliary component unit 8 may be formed integrally with the cover member 10. Further, the configuration of the present embodiment is not limited to the case where the light emitted from the light emitting element is applied to a form in which illumination is performed using a light guide plate. For example, the present invention can be applied to a type in which light emitted from a light-emitting element mounted on a substrate is transmitted through a translucent cover having a diffusibility and illuminated. Furthermore, the type of light source is not particularly limited.
The present invention is not limited to the configuration of the embodiment described above, and various modifications can be made without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 ... Instrument body, 2 ... Lighting device, 3 ... Support chassis,
4 ... Center chassis, 5 ... Mounting part (adapter guide), 6 ... Light source part,
7 ... light guide plate, 8 ... auxiliary component unit, 9 ... main body frame,
DESCRIPTION OF SYMBOLS 10 ... Cover member, 51 ... Engagement port, 61 ... Light emitting element, 62 ... Substrate,
71: Opening of light guide plate, 72: Light incident end surface, A: Adapter,
C ... fixture mounting surface (ceiling surface), Cb ... wiring fixture (hook ceiling body)

Claims (3)

A mounting portion having an engagement port facing a wiring device installed on the device mounting surface;
A light guide plate having an opening at a substantially central portion facing the engagement port and having a light incident end surface on an outer peripheral portion;
A light emitting element disposed so that outgoing light is incident on the light incident end face of the light guide plate;
A translucent cover member that covers the engagement port so as to be openable and closable facing the engagement port;
The lighting fixture characterized by comprising. A mounting portion having an engagement port facing a wiring device installed on the device mounting surface;
A translucent cover member that covers the engagement port so as to be openable and closable facing the engagement port;
An auxiliary component unit disposed on the back side of the cover member;
The lighting fixture characterized by comprising.   The cover member is detachable from the luminaire main body, and when the cover member is operated to open the engagement port, the cover member is held on the luminaire main body side and can be prevented from falling. The lighting fixture according to claim 1, wherein the lighting fixture is provided.

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