JP2017021918A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of downsizing an LED illumination unit.SOLUTION: A luminaire includes: a luminaire body attached to an attachment object; a light-permeable cover attached to the luminaire body; and an LED illumination unit 2 arranged between the luminaire body and the light permeable cover. The LED illumination unit 2 includes: a lighting circuit board 22 having an LED element 21 and a first surface 22a on which the LED element 21 is mounted; an insulation cover 23 arranged on the side of a second surface 22b that is the rear surface of the first surface 22a, and having a concave recess part 231 on the side of the second surface 22b; a heat radiation cover covering the insulation cover 23, configured to radiate heat emitted from the LED element 21, and having a recess part 241 and a heat radiation part 245; an LED cover 25 covering the side of the first surface 22a, and attached to the heat radiation cover; and a connection terminal 26 provided at a recess part in which a part of the concave recess part 231 is recessed to the side of the lighting circuit board 22.SELECTED DRAWING: Figure 3B

Description

  The present invention relates to an illuminating device, for example, an illuminating device (a porch lamp, a bathroom light, etc.) installed in an entrance or a bathroom.

  The LED lighting unit of Patent Document 1 is for attaching and fixing an outer shell, a light source (LED package) disposed inside the outer shell, a lid (porous material) provided on the bottom surface side of the outer shell, and an instrument body. Includes mounting screws. The outer shell has a box shape having a main body (bottom surface), a lens holder (side surface), and a lens (top surface). The lead wire is connected to the connector on the light source substrate through an insertion hole provided in the outer body and the lid.

JP 2013-1227889 A

  However, since the connector is disposed beside the light source on the light source substrate, it shields the light, resulting in a decrease in light extraction efficiency. On the other hand, although the structure which provides a connector outside an LED lighting unit can also be considered, there exists a possibility that an LED lighting unit may enlarge.

  This invention is made | formed in view of said situation, and it aims at providing the illuminating device which can miniaturize an LED illumination unit.

The lighting device of the present invention is
An instrument body to be attached to the mounting target;
A translucent cover attached to the instrument body;
An illumination device comprising an LED illumination unit disposed between the instrument body and the translucent cover,
The LED lighting unit is
An LED element;
A lighting circuit board having a first surface on which the LED element is mounted;
An insulating cover disposed on the second surface side, which is the back surface of the first surface, and having a concave recess on the second surface side;
A heat dissipation cover that covers the insulating cover and dissipates heat generated by the LED element;
An LED cover that covers the first surface side and is attached to the heat dissipation cover;
And a terminal portion provided at a recessed portion in which a recessed part of the recessed portion is recessed toward the lighting circuit board side.

  According to this configuration, by providing the terminal portion (for example, the terminal portion connected to the wiring of the external power supply) in the recessed portion of the indented portion of the insulating cover, the terminal portion is provided separately from the outside of the LED lighting unit. The LED lighting unit can be made small and thin. Moreover, the light extraction efficiency is not lowered by arranging the terminal portion at a position different from the LED element mounting surface of the lighting circuit board.

  As one embodiment of the invention, the concave portion of the indented portion may be a columnar shape or a polygonal columnar shape.

  As one embodiment of the invention, the volume of the recessed portion is smaller than the volume of the terminal portion. In this configuration, the insertion portion for wiring of the terminal portion provided in the recessed portion is exposed. The insertion portion is configured to face the center side of the recessed portion of the insulating cover.

  As one embodiment of the invention, the terminal portion has a wiring portion connected to the lighting circuit board. The wiring part of the terminal part provided in the dent part is exposed.

  As one embodiment of the invention, the recessed portion has an inclined surface that is inclined with respect to the lighting circuit board. By providing the terminal portion on the inclined surface, the thickness can be further reduced.

  As one embodiment of the invention described above, the terminal portion has an insertion portion, and the insertion portion is inclined corresponding to the inclined surface. Since the insertion site is inclined, wiring work can be easily performed.

  As one embodiment of the invention, the indented part has a guide part for guiding the insertion of the wiring. Since there is a guide section, wiring connection work can be performed reliably. Examples of the guide part include engraving, printing, a concave shape, and a convex shape.

  As one embodiment of the invention, the terminal portion is a waterproof quick-connect terminal. It can be waterproof and can be connected quickly.

  As one embodiment of the invention, the insulating cover has a concave recess, and a lighting circuit component is disposed in the recess. Examples of circuit components mounted on the second surface include tall circuit components (discrete). The circuit component mounted on the first surface is, for example, a circuit component shorter than the circuit component mounted on the second surface.

  As one embodiment of the invention, a circuit component is mounted on the central portion of the first surface of the lighting circuit board, and an LED element is mounted around the circuit component. Moreover, as one Embodiment, a reflection part (reflective coating material) is provided in the 1st surface in which an LED element is mounted.

  As one embodiment of the invention, the heat dissipation cover has an opening portion at a position corresponding to the position of the indented portion, and wiring is provided at an exposed portion of the insulating cover at a position corresponding to the position of the opening portion. A waterproof waterproof member having a hole through is provided. The waterproofness of the wiring of the LED lighting unit can be secured. Examples of the wiring inserted into the waterproof member include wiring connected to the terminal portion, wiring connected to the sensor circuit board, and the like.

  As one embodiment of the above invention, examples of the LED element include a single-chip shell type and surface-mount type, and a multi-chip surface-mount type.

  ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which can miniaturize a LED lighting unit can be provided.

It is an external appearance perspective view of the illuminating device of Embodiment 1. FIG. It is a front view of FIG. It is a left view of FIG. It is a bottom view of FIG. FIG. 2 is a right side sectional view of FIG. 1. It is a cross-sectional view of a state in which the LED lighting unit is attached to the instrument body. It is the perspective view which looked at the LED lighting unit from the heat radiating cover side. It is a cross-sectional view of an LED lighting unit. It is an example figure of the 1st surface of a lighting circuit board. It is an example figure of the 2nd surface of a lighting circuit board. It is an outer side perspective view of an insulating cover. It is an inner side perspective view of an insulating cover. It is a cross-sectional view of an insulating cover. It is a figure for demonstrating the guide part of a quick connection terminal. It is a perspective view of a thermal radiation cover. It is the perspective view which looked at the LED cover from the back side. It is the figure which looked at the LED cover from the bottom face. It is a cross-sectional view of the LED cover when the lighting circuit is mounted. It is a sectional side view of an engaging claw. It is a front view of the illuminating device provided with the translucent cover of another embodiment. It is the front view and side view of an illuminating device provided with the translucent cover of another embodiment.

(Embodiment 1)
The illuminating device of Embodiment 1 is the pouch lamp 1 installed in the entrance, and it demonstrates below, referring drawings. FIG. 1 is an external perspective view of a pouch lamp 1, and FIGS. 2A to 2D are a front view, a left side view, a bottom view, and a right sectional view of the pouch lamp of FIG. FIG. 2E shows a cross-sectional view showing a state in which the LED lighting unit is attached to the fixture body.

(Basic configuration of pouch light)
The pouch lamp 1 includes an appliance main body 11 attached to an attachment target, an LED illumination unit 2 arranged inside the appliance main body 11, a translucent cover 12 covering the LED illumination unit 2, an LED illumination unit 2, and an electrical The sensor unit 5 connected to is provided.

  The instrument main body 11 has a cylindrical shape, and the cylindrical one opening is closed by the mounting surface 110 (see FIG. 2D). An opening (not shown) is formed in the approximate center of the mounting surface 110, and a commercial power cable is inserted through this opening. An elastic member sheet 111 is provided on the back surface of the mounting surface 110. The sheet 111 of this elastic member has a protective function (cushion function) and an improvement function of fixing property so that the attachment target (wall) is not damaged (see FIG. 2D).

  A milky white translucent cover 12 is attached to the other opening of the instrument body 11 via a waterproof member 122. A first convex screw 113 is provided on the inner surface of the other opening of the instrument main body 11, and a second convex screw 123 is provided on the outer surface of the translucent cover 12. The instrument main body 11 and the translucent cover 12 are attached by these screwing means. Fixed. In this embodiment, the instrument body 11 and the translucent cover 12 are made of a thermoplastic resin such as acrylic. However, the instrument body 11 may be made of aluminum, other metals, ceramics, etc. 12 may be made of glass or the like.

  The LED lighting unit 2 has a circular LED cover 25. The LED cover 25 extends outward from the outer edges of the left and right covers, and includes an attachment piece 251 in which an attachment hole 251a is formed, and an attachment piece 252 in which an attachment hole 252a is formed (see FIGS. 2E and 3A). . The instrument body 11 has projecting portions 115 and 117 projecting from the mounting surface toward the translucent cover 12 side. Each of the projecting portions 115 and 117 has a female screw structure. As shown in FIG. 2E, the mounting pieces 251 and 252 of the LED cover 25 are arranged on the top surfaces of the projecting portions 115 and 117, and are fixed to the mounting holes 251a and 252a with fixing screws (male screws) 116 and 118, respectively. Thus, the LED lighting unit 2 is attached to the appliance main body 11.

  A sensor unit 5 is provided in the lower part of the instrument body 11. In the present embodiment, the sensor unit 5 includes a sensor 51, a sensor cover 52 that covers the sensor 51, and a sensor drive circuit (not shown). The sensor 51 and the sensor cover 52 are arranged so as to be exposed at the lower end of the instrument main body 11, and a sensor drive circuit (not shown) is arranged in the cylinder of the instrument main body 11. A waterproof cover 112 extending from the instrument body 11 is provided on the front side and both side surfaces of the sensor 51 and the sensor cover 52 to improve waterproofness. The sensor 51 includes a human sensor and an illuminance sensor. When the human sensor detects a person and when the illuminance sensor detects an illuminance below a threshold value, a direct current is supplied to each LED element 21 to turn on. The angle θ formed by the detection center of the human sensor and the vertical line is, for example, 30 ° to 60 ° (see FIG. 2D).

(Basic configuration of LED lighting unit)
The configuration of the LED illumination unit will be described with reference to FIGS. 3A and 3B. The LED lighting unit 2 of the present embodiment is disposed on the LED element 21, the lighting circuit board 22 having the first surface 22a on which the LED element 21 is mounted, and the second surface 22b side which is the back surface of the first surface 22a. An insulating cover 23, a heat radiating cover 24 that covers the insulating cover 23 and radiates heat generated by the LED elements 21, and an LED cover 25 that covers the first surface 22 a side and is attached to the heat radiating cover 23. The LED lighting unit 2 is arranged in the order of the heat dissipation cover 24, the insulating cover 23, the lighting circuit board 22, and the LED cover 25 in a side sectional view.

(Lighting circuit board)
As shown in FIG. 3C, the circuit component (group) D1 is mounted at the center of the first surface 22a of the circular lighting circuit board 22, and the LED element 21 is mounted around the circuit component (group) D1. The circuit component D1 is a circuit component shorter than a circuit component D2 described later. A reflective portion is provided on the first surface 22a on which the LED element 21 is mounted. In the present embodiment, a reflective layer configured by applying a reflective paint to the first surface 22a is formed.

  As illustrated in FIG. 3D, the circuit component (group) D <b> 2 is mounted on the central portion of the second surface 22 b of the lighting circuit board 22. The circuit component (group) D2 is a tall circuit component, and is a taller circuit component than the above-described circuit component (group) D1. The circuit component (group) D <b> 2 is disposed in the concave recess 231 of the insulating cover 23. Around the circuit component (group) D2 on the second surface 22b (outside the periphery of the insulating cover 23), the heat radiating portion 245 of the heat radiating cover 24 is brought into contact (see FIG. 3B).

(Insulation cover)
The circular insulating cover 23 has a concave recess 231 at the center (see FIG. 4A). The recessed portion 231 has a recessed portion 232 in which a part of the recessed shape is recessed toward the lighting circuit board 22 side. The recessed portion 232 has an inclined surface 232 a that is inclined with respect to the lighting circuit board 22. A screw hole 232b is formed in the inclined surface 232a of the recessed portion 232, and the waterproof quick-connect terminal 26 is fixed to the recessed portion 232 with a fixing screw 265 (see FIG. 3B). As shown in FIG. 4C, the inclination angle α formed by the extension line L1 of the inclined surface 232a and the extension line L2 of the lighting circuit board 22 is 10 °, but is not limited thereto, and is, for example, 5 ° to 30 °. Can be set to a range.

  In the quick connection terminal 26, wiring insertion portions 261a and 261b connected to an external power source face the center side of the recessed portion 231 and wiring wiring portions 262a and 262b connected to the lighting circuit board 22 are opposite ( Facing outward (opposite to the center). The insertion parts 261a and 261b and the wiring parts 262a and 262b are exposed facing the open space without facing the both side wall surfaces of the recessed part 232, so that the wiring connection work can be easily performed. The insertion sites 261a and 261b are inclined corresponding to the inclined surface 232a, so that the wiring connection work can be performed more easily (see FIGS. 3A and 4D).

  The hollow portion 231 includes guide portions 235a and 235b that guide the insertion of the wiring. Two guide portions 235a and 235b are formed corresponding to the two insertion portions 261a and 261b. In the present embodiment, the guide portions 235a and 235b have a dent shape in which the width and depth gradually increase toward the insertion sites 261a and 261b, have good visibility, and can secure a work space. This can be done reliably (see FIG. 4D).

  When the heat radiating cover 24 is attached to the insulating cover 23, the exposed portion 234 of the recessed portion 231 is located at the position of the opening portion 244 of the heat radiating cover 24. The exposed portion 234 has an opening 231 a for a cable bush 27 (corresponding to a waterproof member) that introduces wiring to the circuit board 22. Screw holes 236a to 236c for fixing the insulating cover 23 and the heat dissipation cover 24 with fixing screws 244a to 244c (corresponding to first fixing means) are provided in the recessed portion 231 (see FIG. 4A). Screw holes 237a to 237c for fixing the lighting circuit board 22 and the insulating cover 23 with a fixing screw 226 (corresponding to the second fixing means, see FIG. 3B) are provided inside the concave portion of the recess 231 (see FIG. 3B). (See FIG. 4B). The lighting circuit board 22 is formed with a hole 22 h that penetrates the fixing screw 226.

  The indented portion 231 has a convex line 231b located at the boundary between the opening portion 244 of the heat dissipation cover 24 and the exposed portion 234 (see FIG. 4A). By providing the convex line 231b having a height substantially the same as the thickness of the heat dissipation cover 24, positioning and waterproofness during assembly can be improved.

  A concave groove 233a in which the first O-ring 29 made of waterproof foamed silicone is disposed is formed on the peripheral edge 233 of the insulating cover 23 (see FIGS. 3B and 4A).

(Heat dissipation cover)
The circular heat radiation cover 24 has a recessed portion 241 having a shape corresponding to the recessed portion 231 of the insulating cover 23 (see FIG. 4E). The recessed portion 241 has an opening portion 244 at a position corresponding to the exposed portion 234 and an intermediate portion 242 that contacts the inclined surface 232a and contacts the bottom portion of the quick connection terminal 26. The intermediate part 242 has a through hole 242a through which a fixing screw for fixing the quick connection terminal 26 and the insulating cover 23 passes. The heat dissipation cover 24 has through holes 246 a to 246 c at positions corresponding to the screw holes 236 a to 236 c of the insulating cover 23. The aforementioned fixing screws 244a to 244c are inserted through the through holes 246a to 246c.

  The heat dissipation cover 24 has a water stop portion 243 that comes into contact with the first O-ring 29 at a position corresponding to the above-described concave groove 233a, and the water stop portion 243 has a substantially right angle in a side sectional view. The heat radiating cover 24 has a heat radiating portion 245 extending from the water stop 243. The heat dissipating cover 24 has a flange 247 arranged at the outermost edge with the second O-ring 28 made of foamable silicone interposed in the concave groove 252 of the LED cover 25.

  The heat dissipating part 245 contacts the back surface (second surface 22b) of the first surface 22a where the LED element 21 is mounted (in FIG. 4E, the back side of the heat dissipating part 245 contacts the second surface 22b).

(LED cover)
As shown in FIG. 5C, the LED cover 25 has a first region E1 located on the cover outer edge side in the region between the optical axis LX and the 1/2 beam angle of the LED element 21 in the direction from the cover outer edge to the cover center. The surface shape of the cover is different between the second region E2 located on the center side of the cover. With this LED cover 25, the LED element 21 can be emitted uniformly from the LED cover 25 without being visually recognized as a light spot from the outside.

  The first region E1 is larger than the second region E2 in the change width of the LED cover 25 from the lighting circuit board 22.

  5B and 5C, the LED cover 25 includes a first curved surface 257a disposed at the center, and a second curved surface 257b disposed in an annular shape continuously on the outer periphery of the first curved surface 257a. And a hollow cylinder portion 257c that is continuously annularly arranged on the outer periphery of the second curved surface 257b. The curvature radius (r1) of the first curved surface 257a is larger than the curvature radius (r2) of the second curved surface 257b.

  The LED cover 25 is made of a thermoplastic resin containing a light diffusing agent that produces an opaque milky white color. In this embodiment, the thermoplastic resin is polycarbonate, and the light diffusing agent is an acrylic diffusing agent having a refractive index different from that of polycarbonate. Moreover, the LED cover 25 has an uneven shape formed by embossing on the inner surface and the outer surface thereof, and is roughened. Due to these light diffusing agents and roughening, the light emission from the LED cover 25 is made more uniform. As another embodiment, in the case where the brightness is obtained rather than the homogenization of light emission, the LED cover 25 is made of a highly transparent thermoplastic resin (for example, polycarbonate) without blending a diffusing agent, etc. The light emission may be made uniform by using the diffusion function of the cover 12.

(Integrated structure with engaging means and elastic member)
As shown in FIG. 5A, the LED cover 25 has a concave groove portion 252 on the outer periphery that houses the flange 247 of the heat dissipation cover 24 with a second O-ring 28 (corresponding to an elastic member) interposed therebetween. By interposing the second O-ring 28, the LED cover 25 and the heat dissipation cover 24 can be firmly attached, and waterproofness can be secured.

  The groove portion 252 has an outer wall 253 on the outside and an inner wall 254. The outer wall 253 has five engaging regions having a claw shape protruding into the groove and having engaging claws 255a to 255c (five in total, two not shown) that engage with the flange 247. . The thickness of the outer walls 253a to 253e in the five engagement regions is thinner than the thickness of the other outer walls. The engaging claws 255 a to 255 c have inclined surfaces f (f 1, f 2, f 3...) Inclined to the inside of the groove 252 and engaging surfaces g engaged with the flange 247. FIG. 5D shows a side sectional view of the engaging claw.

(Engagement method)
(1) The lighting circuit board 22 is attached to the insulating cover 23. Next, (2) the heat radiating cover 24 is attached to the insulating cover 23 while pressing the first O-ring 29. Note that the order of (1) and (2) may be reversed. Next, (3) the second O-ring 28 is disposed in the groove 252 of the LED cover 25. (4) While pressing the second O-ring 28, the flange 247 of the heat dissipation cover 24 is inserted into the groove 252 and the flange 247 is attached to the bottom surface g of each engagement claw (255a to 255c and two places not shown). Arrange (see FIG. 5D). Next, (5) the quick connection terminal 26 is attached.

  In the above (4), the flange 247 enters while contacting the inclined surface f of each of the engaging claws 255a to 255c. Since the engaging claws 255a to 255c are brought into contact with the end of the flange at the inclined surface f, the engaging claws 255a to 255c are likely to spread outward, and the resistance force is reduced, so that the flange 247 enters the groove 252. It becomes easy.

  Moreover, as shown to FIG. 5A, the outer surface 253a-253e of an engagement area | region is thin. The inner walls 254a to 254e at positions facing the outer walls 253a to 253e and the engaging claws 255a to 255c in the engagement region have a notch shape. By releasing the force applied to the inner walls 254a to 254e, the force applied to the engaging claws 255a to 255c can be reduced, and the engagement between the flange 247 and the engaging claws 255a to 255c can be suitably performed.

(wiring)
Examples of the wiring inserted into the cable bush 27 include wiring from the quick connection terminal 26 and wiring from the sensor circuit board.

(Another embodiment)
Although the said embodiment was a pouch lamp (illuminating device) which has a sensor unit, the LED lighting unit of this invention can be employ | adopted for the pouch lamp or bathroom lamp which does not have a sensor unit.

  Moreover, in the said embodiment, although the attachment means by five engagement claws used attachment of an LED cover and a thermal radiation cover, it is not restricted to this, 2 or more, less than 5, 6 or more engagement It may be a nail. Further, the shape of the engaging claw is not limited to FIG. 5D. Further, the attachment of the LED cover and the heat dissipation cover is not limited to the engagement means, and may be attached by other screwing means or fitting means.

  Moreover, in the said embodiment, although the concave shape of the hollow part of the insulating cover was columnar shape, it is not restricted to this, For example, polygonal columnar shape may be sufficient. In the case of a polygonal column shape, the corners may be rounded.

  Moreover, although the said translucent cover was circular by the front view, it is not limited to this, As shown to FIG. 6A, the rectangular translucent cover 61 may be sufficient. Further, as shown in FIG. 6B, a cross cover 62 may be provided which is disposed on the entire surface of a light-transmitting cover (which may be circular or rectangular in front view) and has a protective function.

DESCRIPTION OF SYMBOLS 1 Pouch lamp 5 Sensor unit 11 Instrument main body 12 Translucent cover 21 LED element 22 Lighting circuit board 23 Insulation cover 231 Recessed part 232 Recessed part 232a Inclined surface 24 Heat radiation cover 241 Recessed part 25 LED cover

Claims (5)

An instrument body to be attached to the mounting target;
A translucent cover attached to the instrument body;
An illumination device comprising an LED illumination unit disposed between the instrument body and the translucent cover,
The LED lighting unit is
An LED element;
A lighting circuit board having a first surface on which the LED element is mounted;
An insulating cover disposed on the second surface side, which is the back surface of the first surface, and having a concave recess on the second surface side;
A heat dissipation cover that covers the insulating cover and dissipates heat generated by the LED element;
An LED cover that covers the first surface side and is attached to the heat dissipation cover;
A lighting device comprising: a terminal portion provided at a recessed portion in which a concave part of the recessed portion is recessed toward the lighting circuit board side.   The lighting device according to claim 1, wherein the recessed portion has an inclined surface that is inclined with respect to the lighting circuit board. The terminal portion has an insertion site;
The lighting device according to claim 2, wherein the insertion site is inclined corresponding to the inclined surface.   The lighting device according to any one of claims 1 to 3, wherein the indented portion includes a guide portion that guides insertion of wiring. The said terminal part is an illuminating device of any one of Claims 1-4 which is a waterproof quick connection terminal.

Images