JP2013168236A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device making a coupling means hardly visualized to enhance appearance design properties.SOLUTION: The lighting device is provided with a mounting member 1 having a mounting part 4 for mounting on a device-mounting face C, and a light source body 2 having a light source part 7 and to be mounted on a front face side of the mounting member 1. The device is also provided with coupling means 12, 75 positioned at sites of one end side of the mounting member 1 and one end side, yet further inside than its outer shell, of the light source body 2, for coupling the light source body 2 in free opening and closing by rotating it against the mounting member 1.

Description

  Embodiments described herein relate generally to a lighting device including a light source unit body that is attached to an attachment member attached to a device attachment surface such as a ceiling surface so as to be opened and closed.

  Recently, along with higher output and higher efficiency of LEDs (light emitting diodes), lighting devices that use LEDs as light sources and that can be expected to have low power consumption and long life have been developed.

  This illuminating device is obtained by mounting a plurality of LEDs on a substrate so as to obtain a predetermined brightness, and is used as, for example, a ceiling light for a general house attached to a ceiling surface or the like. In this type of general residential ceiling light, the exterior design is an important element in product selection, and the exterior design is extremely important.

  By the way, such a ceiling light has been proposed in which a light source portion is provided so as to be rotatable with respect to the lower surface of the main body portion so as to be opened and closed. In this ceiling light, the light source part is connected to the main body part by connecting means such as a hinge.

JP 2002-270027 A

  However, in the configuration as described above, when the connecting means appears outside and the side portion of the lighting device is viewed from below, the connecting means is visually recognized, resulting in a problem that the appearance design is inferior.

  Embodiments of the present invention have been made in view of the above problems, and an object of the present invention is to provide an illuminating device that makes it difficult to visually recognize the connecting means and can improve the appearance design.

  The illuminating device by embodiment of this invention is provided with the attachment member which has an attachment part for attaching to an apparatus attachment surface, and the light source part main body attached to the front side of the said attachment member while having a light source part.

  Also, there is a connecting means that is positioned at one end side of the mounting member and one end side of the light source unit main body and inside the outline thereof, and that connects the light source unit main body to the mounting member so as to be opened and closed. I have.

  According to the embodiment of the present invention, it is possible to provide an illuminating device that can make it difficult to visually recognize the connecting means and can improve the appearance design.

It is a perspective view which shows the illuminating device which concerns on embodiment of this invention. It is a top view which shows the back side of the same illuminating device. FIG. 3 is a cross-sectional view taken along line YY in FIG. It is an enlarged view which shows the A section in FIG. In the same illuminating device, the attachment procedure to a ceiling surface is shown, and it is sectional drawing which shows the state by which the light source part main body was supported by the attachment member. In the same illuminating device, it is sectional drawing which shows the state which open | released the light source part main body with respect to the attachment member at the rotation angle of about 90 degree | times by using a connection means as a fulcrum. It is an enlarged view which shows the A section in FIG.

  The lighting device as an example of the present embodiment is a type that is used by being attached to a hanging ceiling body that is a wiring device installed on a device mounting surface such as a ceiling surface. It is a ceiling light that performs lighting.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 7. In the figure, the wiring connection relationship such as electric wires may be omitted. In addition, the same code | symbol is attached | subjected to the same part and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 1 to 3 and 5, the illumination device basically includes two members, that is, an attachment member 1 and a light source unit body 2. The attachment member 1 is provided with a lighting device 3, an adapter guide as the attachment portion 4, an indirect light source portion 5, and an auxiliary component unit 6 provided with a plurality of electrical auxiliary components. The light source unit body 2 includes a light source unit 7, a light guide plate 8, a frame member 9, and a diffusion cover 10.

  Further, the illuminating device is an infrared remote control transmitter Rc that controls the lighting state of the adapter A and the light source unit 2 that are electrically and mechanically connected to the hanging ceiling body Cb installed on the ceiling surface C as the device mounting surface. It has. Such an illuminating device 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. These components will be described sequentially.

  The attachment member 1 is an apparatus main body formed in a substantially rectangular flat plate shape from a metal material such as a cold rolled steel plate. Specifically, the chassis is coated with white paint, and a substantially circular portion in which a hook sealing body Cb installed on the ceiling surface C and a mounting portion 4 (to be described later) facing the adapter A are arranged in a substantially central portion. An opening 11 having a shape is formed.

  Further, a locking bracket 12 bent in a key shape is attached to a substantially central portion on one side of the attachment member 1 facing in the longitudinal direction by a fixing means such as a screw. On the other hand, a pair of mounting brackets 13 that are bent in a substantially L shape and extend to the front side are similarly attached to the corners at both ends on the other side by fixing means such as screws.

  Specifically, as shown in FIG. 4 representatively, the locking bracket 12 includes a fixing portion 12a fixed to the attachment member 1 and a hanging portion 12b bent so as to hang down from the fixing portion 12a to the front surface side. And an extending part 12c bent inward from the hanging part 12b, and a receiving part 12d formed so as to stand up from the extending part 12c.

Furthermore, as representatively shown in FIG. 3, the mounting member 1 is formed with a first projecting wall 14 and a second projecting wall 15 projecting to the front side by drawing. The first protruding wall 14 is formed in a substantially square shape with rounded corners by the stepped portion 14a, and the second protruding wall 15 is substantially circular so as to protrude from the first protruding wall 14 by the stepped portion 15a. Is formed. Therefore, the second protruding wall 15 is formed so as to surround the opening 11.
The first projecting wall 14 and the second projecting wall 15 mainly serve to reinforce the flat mounting member 1.

  As representatively shown in FIG. 3, the lighting device 3 includes a circuit board and circuit components such as a control IC, a transformer, and a capacitor mounted on the circuit board. The circuit board is formed in a plate shape so as to surround the center portion, and circuit components are mounted on the surface side thereof.

  The circuit board is electrically connected to the adapter A side, and is connected to a commercial AC power source via the adapter A. Therefore, the lighting device 3 receives this AC power supply, generates a DC output, feeds the DC output to the light source unit 7 through the electric wire, and controls the light source unit 7 to be lit.

  For this reason, on the front side of the mounting member 1, a power feeding connector Cn3 is provided as a power feeding connecting means derived from the lighting device 3 through a through hole formed in the mounting member 1 as shown in FIGS. It is arranged. The power feeding connector Cn3 has a substantially box-like outer shape, and a connection port P is formed as a connection portion on one side surface side. The connection port P has a concave shape so that a power receiving connector Cn2 as a power receiving connecting means is inserted and can be electrically connected.

  As shown in FIG. 2 and FIG. 3, the lighting device 3 is attached to and covered with the lighting device cover 35 and disposed on the back side of the mounting member 1. In this case, the circuit board is attached with the circuit components facing the front side (the lower side in the drawing). In addition, you may make it mount components with comparatively small height dimensions, such as a switching element and a surface mounting component, on the back surface side of a circuit board.

  The lighting device cover 35 is formed in a substantially rectangular short cylinder shape by a metal material such as a cold rolled steel plate, and the side wall 35a is inclined so as to expand toward the front surface side. An opening 35c is formed at the center.

  The lighting device cover 35 is mounted with a front flange mounted on the mounting member 1 and screwed. Therefore, the lighting device cover 35 is disposed so as to protrude from the back side of the mounting member 1.

  An elastic member 36 is attached to the back side of the lighting device cover 35. The elastic member 36 is a metal spring member made of a material such as stainless steel, and is attached corresponding to each side of the lighting device cover 35, and extends to the back side so that the pair of distal end sides expands. ing.

  The elastic member 36 is a member disposed so as to be interposed with elastic deformation between the lighting device and the ceiling surface C in a state where the lighting device is attached to the ceiling surface C as the device mounting surface. It acts to securely hold the ceiling surface C.

  The attachment portion 4 is an adapter guide, a member through which the adapter A is inserted and engaged, and a member for attaching the lighting device to the ceiling surface C. As shown in FIGS. 2 and 3, the adapter guide is formed in a substantially cylindrical shape, and a circular engagement port 41 through which the adapter A is inserted and engaged is provided at the center. The adapter guide is disposed corresponding to the opening 11 formed in the substantially central portion of the mounting member 1.

  Note that the attachment portion 4 is not necessarily a member referred to as an adapter guide or the like. For example, it may be an opening formed in a chassis or the like, and means a member or a portion that is opposed to the hooking sealing body Cb as a wiring device and to which the adapter A is engaged. The point is a member or part for attaching the lighting device to the ceiling surface C.

The indirect light source unit 5 is disposed on the back side of the mounting member 1 and around the lighting device 3 and mainly has a function of illuminating the ceiling surface C brightly. As shown in FIGS. 2 and 3, a plurality of indirect light source units 5 are disposed around the lighting device 3, and a substrate 51 and a plurality of light emitting elements 52 mounted on the substrate 51 are disposed. And.
The substrate 51 is formed in a substantially rectangular flat plate, and the light emitting elements 52 are mounted in a line along the longitudinal direction of the substrate 51.

  The substrate 51 on which the light emitting element 52 is mounted is attached along the side wall 35 a at four locations on the side wall 35 a of the lighting device cover 35. In this case, the lighting device cover 35 is formed in a substantially square shape, and the substrate 51 is attached to the linear flat surface of the side wall 35a, so that the attachment is stably performed.

  Moreover, since the side wall 35a which forms the attachment part of the board | substrate 51 is formed in the inclined shape which expands toward the front side, the board | substrate 51 will be turned to diagonally upward, ie, the ceiling surface C direction, and light emission is carried out. The light emitted from the element 52 is effectively irradiated toward the ceiling surface C direction.

  Furthermore, each indirect light source unit 5 is covered with a translucent cover 53 formed in an inclined shape such that the cross section expands toward the back side. For this reason, when the lighting device is attached to the ceiling surface C and the side portion of the lighting device is viewed from below, it is possible to make it difficult to visually recognize the elastic member 36 attached to the back side of the lighting device cover 35. Become.

  The light emitting element 52 is an LED, which is a surface-mount type LED package, and has an emission color of a light bulb color (L). The light emitting element 52 is connected to the lighting device 3 and controlled to be turned on.

  As described above, the indirect light source unit 5 is attached to the side wall 35a of the lighting device cover 35 and is disposed around the lighting device 3. Therefore, when providing the indirect light source unit 5, no special space is required. The apparatus can be thinned without increasing the height dimension to the back side. Also, the wiring connecting the lighting device 3 and the indirect light source unit 5 can be simplified.

The auxiliary component unit 6 is disposed in the central portion on the other side of the mounting member 1. The auxiliary component unit 6 includes a unit board and a plurality of electrical auxiliary parts mounted on the board in a horizontally long box-like case. The electrical auxiliary components in this embodiment are an infrared remote control signal receiver, a nightlight, a channel setting switch, and the like.
Next, the light source unit body 2 includes a light source unit 7, a light guide plate 8, a frame member 9, and a diffusion cover 10.
As shown in FIGS. 3 and 4, the light source unit 7 includes a substrate 71 and a light emitting element 72 mounted on the substrate 71.

  The substrate 71 is formed in a horizontally long rectangular shape and is made of a flat plate of glass epoxy resin (FR-4) which is an insulating material, and a wiring pattern made of copper foil is formed on the surface side. Further, a resist layer is appropriately laminated on the wiring pattern. The material of the substrate 71 can be a ceramic material or a synthetic resin material when an insulating material is used. 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 72 is an LED, which is a surface mount type LED package. A plurality of the LED packages are mounted and arranged in a straight line along the longitudinal direction of the substrate 71. The LED package is roughly composed of an LED chip disposed in a cavity formed of ceramics or synthetic resin, and a translucent resin for molding such as epoxy resin or silicone resin that seals the LED chip. It is configured.

  The LED package uses light bulb colors (L) and daylight colors (D), so-called white ones, which are alternately linear along the longitudinal direction. They are arranged side by side. The LED chip is an LED chip that emits blue light. In the translucent resin, a phosphor is mixed, and in order to be able to emit white light of light bulb color (L) and daylight color (D), the light-transmitting resin has a complementary color relationship mainly with blue light. Yellow phosphors that emit yellow light and red phosphors are used to supplement reddish components. The so-called white includes daylight color (D), daylight white (N), white (W), light bulb color (L), and the like.

The LED may be mounted directly on the substrate 71 by a COB (chip on board) method, or a bullet-type LED may be mounted. It is not limited.
The board | substrate 71 of such a light source part 7 is attached to the attachment board 73 as a heat radiating member.

  The mounting plate 73 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 channel shape. The board 71 is attached to the inner wall of the mounting plate 73 by screwing or the like so that the back side thereof is in close contact. Therefore, the light emitting element 72 is thermally coupled to the mounting plate 73 via the substrate 71, and the light source unit 7 is unitized by mounting the substrate 71 on the mounting plate 73.

In the present embodiment, four unitized light source sections 7 are used and arranged corresponding to each side of the light guide plate 8. The unitized light source sections 7 are electrically connected to each other by a connector.
The unitized light source unit 7 may be disposed on two opposing sides of the light guide plate 8 or on two adjacent sides, and can be appropriately selected according to the design.

  Such a mounting plate 73 as a heat radiating member is disposed outside the mounting member 1 and exposed to the outside, as representatively shown in FIG. That is, each mounting plate 73 is disposed in a square shape so as to surround the mounting member 1 with the mounting member 1 facing inward.

  Further, since the substrate 71 is attached to the inner side wall of the attachment plate 73 so as to stand in the vertical direction, the light source unit body 2 surrounded by each attachment plate 73 has an inner side as shown in FIGS. As shown in FIG. 5, a space Sc is formed. That is, the space portion Sc is formed on the light source unit main body 2 side facing the front surface side of the attachment member 1.

  Further, as shown in FIGS. 3 and 5, a power receiving connector Cn2 as a power receiving connecting means led out by an electric wire is provided from one end of the light source section 7.

  Specifically, the power receiving connector Cn2 is electrically connected to the light emitting element 72 via the substrate 71 in the light source unit 7, and is in the vicinity of the corner of the mounting member 1 having a rectangular shape, in other words, a rectangular shape. From the vicinity of the corner portion of the light guide plate 8 forming the above, the electric wire is led out in the direction along the inner side in the longitudinal direction of the mounting member 1. The power receiving connector Cn2 is formed in a substantially rectangular parallelepiped shape and includes an insertion portion protruding forward. The insertion portion is a portion to be inserted into the connection port P of the power feeding connector Cn3, and electrical connection is made by inserting the power receiving connector Cn2 into the power feeding connector Cn3.

  A locking metal fitting 75 bent in a key shape is attached to the center of the opposite side of the mounting plate 73 by a fixing means such as a screw. On the other hand, on the other side of the mounting plate 73, a pair of mounting brackets 76 are mounted by fixing means such as screws.

  Specifically, as shown in FIG. 4 representatively, the locking metal fitting 75 includes a fixing portion 75a fixed to the mounting plate 73, and a first extending portion 75b extending inward from the fixing portion 75a. And a standing part 75c formed so as to rise from the extending part 75b to the back side, a second extending part 75d extending outward from the standing part 75c, and the extending part 75d. It has the latching | locking part 75e formed in this way.

  Such locking metal fittings 75 and mounting metal fittings 76 are disposed so as to face the locking metal fittings 12 and the mounting metal fittings 13 provided on the mounting member 1 described above. The bracket 12 constitutes a connecting means, and the mounting bracket 76 and the mounting bracket 13 constitute a fixing means.

  The connecting means is located at one end side of the mounting member 1 and one end side of the light source unit main body 2 and its outer shell, specifically, at a site inside the outer shell of the frame member 9. That is, the latch receiving bracket 12 is attached to one end side of the attachment member 1, and the latch fitting 75 is located on the inner side of the outer shell of the frame member 9 and attached to the attachment plate 73. Furthermore, this connection means is located in the above-mentioned space part Sc formed inside the light source part main body 2.

  In the present embodiment, the coupling means and the fixing means constitute a coupling means between the mounting member 1 and the light source body 2, and the light source body 2 is attached to the mounting member 1 as will be described in detail later. It rotates and is connected so that opening and closing is possible.

  The light guide plate 8 is formed in a polygonal shape using a material having high transmittance such as acrylic resin. Specifically, it is formed in a rectangular flat plate shape, and a dot pattern consisting of a large number of white reflective dots that diffuse light is formed on the entire back side by printing and a reflective sheet is provided. Further, a diffusion sheet is provided on the entire front side. Further, the side end face of each side of the quadrilateral shape that is the outer peripheral portion of the light guide plate 8 functions as a light incident end face 81 through which light emitted from the light emitting element 72 enters and travels in the light guide plate 8. ing.

  On the light incident end face 81 of the light guide plate 8, the substrate 71 of the light source unit 7 is disposed. That is, as shown mainly in FIG. 4, a plurality of light emitting elements 72 are arranged in a straight line on the substrate 71 so that light is incident on the light incident end face 81 of the light guide plate 8. Further, the light guide plate 8 covers the front surface side of the mounting member 1 including the mounting portion 4.

  The frame member 9 is a member constituting an outer peripheral portion of the light source unit main body 2, that is, an outer shell, and includes an outer frame 91, a front frame 92, and a translucent frame 93. The outer frame 91 is made of a synthetic resin material such as ABS resin or polycarbonate, and has a side wall that rises and has a substantially square frame shape. The front frame 92 is made of a synthetic resin material exhibiting white color, and is formed in a substantially square frame shape in a plate shape.

Similarly, the translucent frame 93 is formed in a substantially square frame shape by a translucent material such as acrylic resin. As shown in FIG. 4, the outer frame 91 and the front frame 9 Between the two. The translucent frame 93 has a function of guiding light emitted from the light guide plate 8 to brighten the side of the light source unit body 2.
These frame members 9 are attached to the mounting plate 73 side by mounting brackets whose detailed configuration is omitted.
The diffusion cover 10 is formed in a substantially square shape by performing a diffusion process on a light-transmitting material such as an acrylic resin, and is disposed so as to cover the front side of the light guide plate 8.

  Further, a diffusion member 85 is arranged on the front surface side of the light guide plate 8 and on the outer peripheral edge portion. The diffusing member 85 has a substantially triangular cross section and an elongated shape, and is formed by performing a diffusion treatment on a light-transmitting material such as an acrylic resin. By disposing the diffusing member 85 at the outer peripheral edge of the light guide plate 8, it is possible to suppress luminance unevenness and color unevenness that are likely to occur in the light incident end surface 81 of the light guide plate 8.

  As shown in FIG. 3, the adapter A is electrically and mechanically connected to the hooking sealing body Cb installed on the ceiling surface C by a hooking blade provided on the upper surface side, and has a substantially cylindrical shape. 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, as shown in FIG. 5, a power cord to be connected to the lighting device 3 is led out from the adapter A, and a power connector Cn1 is connected to the distal end portion thereof. The power connector Cn1 is connected to a power receiving connector (not shown) provided on the lighting device 3 side.

As shown in FIG. 1, the infrared remote control transmitter Rc transmits, for example, a specific coded infrared remote control signal in the form of a pulse having a frequency of 38 kHz. And a light-off button. By operating the remote control transmitter Rc toward the auxiliary component unit 6, that is, the infrared remote control signal receiving unit, the light emission state of the light emitting element 72 in the light source unit 7, that is, control of all-light lighting, dimming lighting, extinction, etc. It can be performed.
Next, a procedure for attaching the lighting device configured as described above to the ceiling surface C will be described with reference to FIGS. 3 and 5.

  First, as shown in FIG. 5, the 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.

  In this state, the attachment member 1 side is attached to the adapter A as shown in the figure. Specifically, the fitting member 41 is engaged until the engagement portion A1 of the adapter A is securely engaged with the engagement port 41 of the adapter guide while the engagement portion 41 of the adapter guide as the attachment portion 4 in the attachment member 1 is aligned with the adapter A. 1 is pushed up from below by hand to perform the mounting operation. In this state, the power connector Cn1 led out from the adapter A is connected to the power receiving connector on the lighting device 3 side.

  Next, the light source body 2 side is attached to the mounting member 1 side. As shown in the drawing, the locking portion 75e of the locking bracket 75 provided on the light source unit main body 2 side is hooked on the receiving portion 12d of the locking bracket 12 on the mounting member 1 side to support the light source unit main body 2. At the same time, the mounting member 1 side and the light source unit body 2 side are connected by a chain Ch to support the light source unit body 2 in a suspended state. The chain Ch has a function of preventing the light source unit body 2 from dropping and improving safety.

  Thereafter, the power receiving connector Cn2 led out from one end of the light source unit 7 is connected to the power supply connector Cn3 on the lighting device 3 side disposed on the front surface side of the mounting member 1. In this case, since the power receiving connector Cn2 is led out from the light source part 7 with a sufficient length by an electric wire, the connecting operation to the power feeding connector Cn3 on the lighting device 3 side becomes easy and the power receiving connector Cn2 or The tension applied to the electric wire can be reduced. As described above, the attachment member 1 side and the light source unit main body 2 side are connected to each other by the power receiving connector Cn2 and the power feeding connector Cn3 so as to be electrically connected and separated.

  Subsequently, the light source body 2 is rotated with the locking portion 75e of the locking bracket 75 serving as a connecting means and the receiving portion 12d of the locking bracket 12 being pivoted to cover the front side of the mounting member 1. Block. In this state, the light source unit body 2 is mounted by the mounting screws S that pass through the through holes of the mounting bracket 13 provided in the mounting member 1 and are screwed into the screw holes of the mounting bracket 76 provided on the light source unit body 2 side. It is securely attached to the front side of the member 1. This state is an attachment completion state (refer FIG. 3).

  In this case, as shown in addition with reference to FIG. 2, the connecting portion of the wire on the mounting member 1, that is, the power feeding connector Cn3 is connected to the other end side of the connecting means (the locking receiving metal 12 and the locking metal 75). Since it is in the direction and beyond the mounting portion 4, it is possible to avoid the electric wire from being caught by the connecting means when the light source unit body 2 is rotated to close the front side of the mounting member 1. Become.

  As shown in FIG. 3, when the lighting device is attached, the adapter A is inserted through the opening 35c of the lighting device cover 35, and the locking portion A1 of the adapter A is locked to the engaging port 41 of the adapter guide. The elastic member 36 provided on the back side of the 35 is elastically deformed and is interposed between the back side of the lighting device cover 35 and the ceiling surface C in a compressed state. Therefore, the lighting device is firmly engaged with the adapter A without being rattled, and the mounting state is stably maintained.

  Further, since the connecting means is located at one end side of the mounting member 1 and one end side of the light source unit main body 2 and inside the outline, when the side portion of the lighting device is viewed from below, The connecting means can be made difficult to visually recognize, and the appearance design can be improved. In addition, since the connecting means is arranged by effectively using the space part Sc formed inside the light source part main body 2, the effect of making it difficult to visually recognize can be further enhanced.

When removing the lighting device, schematically, the mounting screw S is removed, the light source body 2 is rotated in the opening direction with the locking metal fitting 75 side as a rotation fulcrum, and then the light source body 2 is attached. Remove from the member 1 and open the front side of the mounting member 1. Then, the attachment member 1 can be removed by operating the lever provided on the adapter A to release the engagement of the locking portion A1 of the adapter A.
As described above, the light source unit main body 2 can be attached to the front side of the attachment member 1 so as to be openable and detachable.

  By the way, as shown in FIG.6 and FIG.7, when the attachment member 1 side and the light source part main body 2 side are not connected by the chain Ch, the light source part main body 2 rotates a connection means with respect to the attachment member 1. FIG. The fulcrum can be opened at a rotation angle of approximately 90 degrees, and is opened and suspended.

  In this case, the outer shell of the light source unit body 2, specifically, the frame member 9 (the translucent frame 93) does not contact the ceiling surface C. For this reason, it becomes possible to damage the ceiling surface C and to prevent the frame member 9 from being damaged.

  More specifically, since the connecting means is located at one end side of the mounting member 1 and inside the outline of the light source section main body 2, the light source section main body 2 is generally used as a rotation fulcrum with respect to the mounting member 1. When opened at a rotation angle of 90 degrees, the frame member 9 that is the outline of the light source unit main body 2 comes closest to the ceiling surface C.

  In the present embodiment, in order to prevent the frame member 9 from coming into contact with the ceiling surface C, the frame member 9 is placed on the ceiling surface C while the rotation fulcrum by the connecting means is positioned on the inner side of the outline of the light source unit body 2. The position is set so as not to touch.

  In order to prevent the frame member 9 from coming into contact with the ceiling surface C, the position of the connecting means is set, and the lateral projecting dimension of the frame member 9 that is the outline of the light source unit body 2 is set. Various means such as setting the mounting dimension between the ceiling surface C and the lighting device can be considered. In order to prevent the outer shell of the light source unit body 2 from coming into contact with the ceiling surface C, the intended purpose can be achieved by appropriately selecting these means or selecting them in combination.

  Further, when the light source unit main body 2 is opened at a rotation angle of approximately 90 degrees with respect to the mounting member 1 to be in a suspended state, the weight of the light source unit main body 2 is on one end side (connecting member side) of the mounting member 1. In addition, the attachment member 1 side tends to be inclined with respect to the ceiling surface C. However, since the elastic member 36 is disposed on the other end side so as to face the connecting member, this inclination can be suppressed. .

  For example, when power is supplied to the lighting device 3 by operating the infrared remote control transmitter Rc in the mounted state of the lighting device, the light emitting element 72 is energized through the substrate 71, and each light emitting element 72 is turned on by the lighting device 3. Lighting control is performed. The light emitted from the light emitting element 72 enters the light incident end face 61 of the light guide plate 8, and this incident light is totally reflected within the light guide plate 8 and spreads over the entire light guide plate 8, and is formed on the back side. The light is reflected and diffused by a dot pattern made of reflective dots or a reflective sheet, and further diffused and homogenized by the diffusion cover 10 is emitted from the front side.

  In this case, the light guide plate 8 covers the front side of the mounting member 1 including the mounting portion 4. That is, the light guide plate 8 is not formed with a central opening for enabling the adapter A to be operated. For this reason, it is possible to make the luminance of the light emitting surface uniform without generating a dark portion at the center of the light guide plate 8, realize a good light distribution state, and improve the feeling of brightness.

  If an opening is formed in the central portion of the light guide plate 8, the opening is a portion where light is not guided, and this portion becomes dark and a phenomenon occurs in which the central portion becomes a dark portion.

  Further, when the indirect light source unit 5 is energized, each light emitting element 52 is turned on, and light emitted obliquely upward from the light emitting element 52 is transmitted through the translucent cover 53 and from the periphery of the lighting device 3. The ceiling surface is mainly irradiated so as to be emitted. Therefore, the ceiling surface becomes bright and the feeling of brightness in the space can be improved.

  When each light emitting element 72 in the light source unit 7 is turned on, heat is generated from each light emitting element 72. The heat generated from each light emitting element 72 is mainly conducted from the back surface side of the substrate 71 to the mounting plate 73 which is a heat radiating member, and is radiated. In this case, the mounting plate 73 is disposed outside the mounting member 1 so as to be exposed to the outside, so that it is easily cooled by the outside air and is effectively radiated.

  As described above, according to this embodiment, it is possible to make it difficult to visually recognize the connecting means, and it is possible to improve the appearance design. Further, when the light source unit body 2 is opened with respect to the mounting member 1 at a rotation angle of about 90 degrees with the connecting means as a rotation fulcrum, the outer shell of the light source unit body 2 does not come into contact with the ceiling surface C. Therefore, it is possible to prevent the ceiling surface C from being damaged and the frame member 9 from being damaged.

Further, since the connecting portion of the electric wire on the mounting member 1 side is in the direction of the other end side of the coupling means and beyond the mounting portion 4, the light source body 2 is rotated to move the front side of the mounting member 1. When closing, it can avoid that an electric wire is pinched | interposed into a connection means.
In the above embodiment, for example, a hinge structure may be applied as the connecting means, and the light source unit main body may be connected to the front side of the mounting member so as to be opened and closed.

  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. The above embodiment is presented as an example, and is not intended to limit the scope of the invention.

  In the above embodiment, the case where the light guide plate formed in a rectangular shape is used and the light emitting surface is formed in a substantially square shape has been described. For example, the light guide plate is formed in a hexagonal shape, an octagonal shape, etc. A light emitting element is arranged corresponding to each side, the front frame is formed in a circular shape, and the light emitting surface of the light guide plate is exposed in a circular shape so that a circular light emitting surface is formed. You can also

  Moreover, although the said embodiment is suitable for the illuminating device which performs illumination using a light-guide plate, it is not restricted to this. It is applicable also to the illuminating device which does not use a light-guide plate. Furthermore, the light source is suitable when a light emitting element such as an LED is used, but is not particularly limited. A fluorescent lamp or the like may be used.

DESCRIPTION OF SYMBOLS 1 ... Mounting member, 2 ... Light source part main body,
3 ... lighting device, 4 ... mounting part (adapter guide),
5 ... Indirect light source unit, 6 ... Auxiliary component unit,
7 ... light source unit, 8 ... light guide plate,
9 ... Frame member, 10 ... Diffusion cover,
12, 75 ... connecting means (locking bracket, locking bracket),
14, 15 ... projecting wall, 71 ... substrate,
72 ... Light emitting element (LED), 73 ... Heat dissipation member (mounting plate),
81 ... light incident end face,
A ... Adapter, C ... Device mounting surface (ceiling surface),
Cb ... Wiring device (hook ceiling body),
Cn2 ... connection means for power reception (connector for power reception),
Cn3: Connection means for power supply (connector for power supply),
Rc: infrared remote control transmitter, Sc: space

Claims (3)

An attachment member having an attachment portion for attachment to the device attachment surface;
A light source unit body having a light source unit and attached to the front side of the mounting member;
A connecting means that is positioned at one end side of the mounting member and one end side of the light source section main body and inside the outline thereof, and that connects the light source section main body to the mounting member so as to be openable and closable;
An illumination device comprising:   When the light source unit body is opened at a rotation angle of about 90 degrees with the connecting means as a fulcrum with respect to the mounting member, the outer shell of the light source unit body is configured not to contact the device mounting surface. The lighting device according to claim 1.   The attachment member side and the light source unit main body side are electrically connected by an electric wire, and the connection portion of the electric wire on the attachment member side is in the direction of the other end side of the connecting means and beyond the attachment portion. The lighting device according to claim 1, wherein the lighting device is a lighting device.

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