JP2021044258A - Luminaire - Google Patents

Abstract

To provide a luminaire that uses an LED element as a light source, comprises a translucent cover and a shade, and guides a portion of light incident on a central region of the translucent cover to an end part region.SOLUTION: A portion of light incident on a translucent cover 13 is guided to an end part region 42. In addition, light passed through the translucent cover 13 is incident on a shade 14, passed through the shade 14, and radiated.SELECTED DRAWING: Figure 3

Description

An embodiment of the present invention relates to a luminaire using a semiconductor light emitting element.

Conventionally, in a lighting fixture such as a ceiling light, an LED element is used as a light source, and a substrate on which a plurality of LED elements are mounted is attached to the fixture body.

Japanese Unexamined Patent Publication No. 2011-134648

The problem to be solved by the present invention is an illumination that uses an LED element as a light source and guides a part of the light incident on the central region of the translucent cover to the end region in a lighting fixture having a translucent cover and a shade. To provide the equipment.

The luminaire of the embodiment has a main body having a flat arrangement portion protruding to the front side so as to surround the central region;
With a plurality of semiconductor light emitting elements arranged in a plane on the front side of the flat arrangement portion;
An annular central region in which direct light generated by the plurality of semiconductor light emitting elements is incident on the plurality of semiconductor light emitting elements, and an annular shape deviated from the central region of the ring to the inner peripheral side and the outer peripheral side, respectively. With a translucent cover arranged in the main body so as to have an end region for guiding light incident on the annular central region and to cover the plurality of semiconductor light emitting elements;
The extension direction of the flat arrangement portion is translucent, has an opening on the back surface side, is located on the back surface side of the flat arrangement portion, is attached to the main body, and covers the translucent cover. With a translucent shade arranged on the front side of the main body;
The feature is that the central back side is mounted on the ceiling.

According to the luminaire of the embodiment, the light incident on the annular central region of the translucent cover is guided from the annular central region to the end region, and the light transmitted through the translucent cover is transmitted through the shade. Be irradiated.

It is a perspective view of the light source unit which shows one Embodiment. It is the perspective view of the disassembled state of the luminaire using the same light source unit. It is sectional drawing of the specification with the illuminance sensor of the same above. It is sectional drawing of the specification without an illuminance sensor of the same-mentioned lighting equipment. Same as above, the reflection characteristics are shown according to the distance relationship between the semiconductor light emitting element and the substrate and the translucent cover, (a) is an explanatory diagram of the reflection characteristics in the case of the distance relationship of the present embodiment, and (b) is the distance from the present embodiment. It is explanatory drawing of the reflection characteristic when the relationship is long.

Hereinafter, one embodiment will be described with reference to FIGS. 1 to 5.

As shown in FIG. 2, the luminaire 10 is a circular ceiling light that is attached to a hook ceiling installed on the ceiling surface via an adapter. The direction of irradiating light from the luminaire 10 is called the front side, and the side opposite to the front side is called the back side, and the front side and the back side correspond to the lower surface side and the upper surface side of the luminaire 10 in the installed state. ..

The lighting fixture 10 includes a fixture body 11, to which a substrate 12, a translucent cover 13 and a shade 14 are attached to the lower surface side of the fixture body 11, and a frame 15 and a case 16 to be attached to the upper surface side of the fixture body 11. An adapter guide 17 and a lighting circuit 18 as fixture mounting parts are mounted on the case 16. The light source unit 19 is composed of an instrument main body 11, a substrate 12, a translucent cover 13, and the like, which are also used as the unit main body.

Then, as shown in FIGS. 1 to 3, the instrument main body 11 is made of metal and is formed in a disk shape. On the lower surface of the instrument main body 11, a protruding portion 21 is projected in the central region, an annular substrate arranging portion 22 is formed around the protruding portion 21, and an annular substrate arranging portion 22 is formed between the substrate arranging portion 22 and the peripheral flange portion 23. The recess 24 is formed.

An opening 25 into which the adapter guide 17 is fitted is formed in the center of the protrusion 21, a window hole 26 is formed on the side of the opening 25, and a long hole-like shape long in the circumferential direction is formed in the peripheral portion as a mounting portion. A plurality of claw insertion holes 27 and one mounting hole 28 for screwing are formed.

An annular base 29 for mounting the case 16 is formed so as to project from the upper surface side of the instrument main body 11 in the board arrangement portion 22. A plurality of hemispherical convex portions 30 as holding portions are projected from the peripheral portion of the substrate arranging portion 22, and a plurality of elongated claw insertion holes 27 long in the circumferential direction are formed as attachment portions. ing.

A plurality of shade mounting brackets 31 for detachably attaching the shade 14 by rotating the shade 14 with respect to the instrument main body 11 are attached to the recess 24. The shade mounting bracket 31 does not protrude from the board arrangement portion 22 and is housed in the recess 24.

Further, the substrate 12 is formed in a semi-annular shape, and the pair of substrates 12 are combined in an annular shape by arranging the pair of substrates 12 in the substrate arranging portion 22 of the instrument main body 11. The substrate 12 is made of a material such as metal, ceramics and resin. A plurality of fitting holes 34, which are concave portions for uneven fitting with each convex portion 30, are formed in the peripheral portion of the substrate 12.

A wiring pattern is formed on the front surface of the substrate 12, and a plurality of semiconductor light emitting elements including, for example, an LED element and an organic EL, which are connected to the wiring pattern, are mounted. In the embodiment, a surface mount type SMD package type LED element 35 is used as the semiconductor light emitting element, and these plurality of LED elements 35 are arranged at equal intervals along two rows on a concentric circle on the front surface of the substrate 12. There is. Further, on the front surface of the substrate 12, a reflective surface 36 having a high reflectance characteristic is formed so as to cover the wiring pattern.

Further, the translucent cover 13 is made of a transparent resin having light transmissivity and light guide property, and is formed in an annular shape in which an opening 39 opens in the center. The translucent cover 13 has an annular flat plate-shaped cover portion 40 formed in a size capable of covering the substrate 12 with the instrument main body 11. The cover portion 40 has an annular central region 41 in which direct light generated by the plurality of LED elements 35 faces the plurality of LED elements 35, and the inner peripheral side and the outer peripheral side of the central region 41, respectively. It has an detached annular end region 42. On the back side of the end region 42 on the inner peripheral side and the outer peripheral side, a pressing portion 43 formed of an annular rib that abuts on the front surface of the substrate 12 and presses the substrate 12 against the instrument main body 11 is formed so as to project. ..

On the inner peripheral side and the outer peripheral side of the translucent cover 13, a plurality of claw portions 44 as attachment portions that can be inserted into the claw insertion holes 27 of the instrument main body 11 are integrally projected. These plurality of claw portions 44 are formed in a substantially L shape in the mounting rotation direction, which is one of the circumferential directions of the translucent cover 13. Then, by inserting each claw portion 44 into each claw insertion hole 27 of the instrument body 11 and rotating the translucent cover 13 in the mounting rotation direction, the tip of each claw portion 44 is moved to the back side of the instrument body 11. While riding up and pulling the translucent cover 13 toward the instrument body 11, each claw portion 44 is caught on the back side of the instrument body 11 and the substrate 12 is sandwiched between the instrument body 11 and the translucent cover 13. The main body 11 and the translucent cover 13 are fixed.

A screw insertion hole 46 is provided at one location on the inner peripheral portion of the translucent cover 13. By screwing the screw into the mounting hole 28 of the instrument body 11 through the screw insertion hole 46, the translucent cover 13 is restricted from rotating in the removal rotation direction opposite to the mounting rotation direction.

On the front side of the end region 42, there is a light guide emitting portion 47 that is incident on the cover portion 40 in the central region 41 and emits light that is guided from the central region 41 to the end region 42 toward the front side. It is formed. The light guide emitting portion 47 is formed by, for example, a concavo-convex pattern formed in a concavo-convex shape on the front surface of the end region 42.

The plate thickness of the cover portion 40 increases from the central region 41 toward the end region 42 on the inner peripheral side, and the light incident on the cover portion 40 in the central region 41 is the end portion on the inner peripheral side from the central region 41. It is configured so that more light is guided toward the region 42.

Further, the shade 14 is made of a translucent milky white resin, the upper surface side is opened, and a mounting step portion to be attached to each shade mounting bracket 31 is formed on the inner peripheral edge portion on the upper surface side. The shade 14 attached to the instrument body 11 covers the lower surface of the instrument body 11, the substrate 12, the translucent cover 13, and the like.

Further, the frame body 15 is made of a translucent resin and is formed in an annular shape, and the inner peripheral side edge portion is attached to the upper surface side peripheral portion of the instrument main body 11. A pair of sensor window holes 50 are formed at one location on the lower surface of the frame body 15.

Further, the case 16 is made of metal, and a side wall portion 53 projecting to the lower surface side is formed in the peripheral portion, and the side wall portion 53 is mounted on the base portion 29 of the instrument main body 11. In the case 16, an accommodation space 54 for accommodating and mounting the adapter guide 17 and the lighting circuit 18 is formed between the case 16 and the upper surface of the instrument main body 11. On the upper surface of the case 16, when the luminaire 10 is installed on the ceiling surface, it is compressed with the ceiling surface to prevent the luminaire 10 from rattling or rotating. Cushion material 55 is attached.

Further, the adapter guide 17 is formed in a tubular shape and can be detachably attached to the adapter by fitting it into an adapter attached to a hook ceiling installed on the ceiling surface. The adapter guide 17 includes a nightlight 58 facing the lower surface side from the window hole 26 of the appliance main body 11, a remote control number changeover switch portion 59, and the like. The nightlight 58, the remote controller number selector switch 59, and the like may be arranged on the substrate of the lighting circuit 18.

Further, the lighting circuit 18 has a circuit board 62 arranged around the adapter guide 17 and fixed to the case 16 side, and various electronic components constituting the lighting circuit 18 are mounted on the circuit board 62. There is. Commercial AC power is input to the power input side of the lighting circuit 18 via an adapter and a hook ceiling, and the power output side of the lighting circuit 18 is connected to a plurality of LED elements 35 through the wiring pattern of the board 12. Then, the lighting circuit 18 rectifies and smoothes the AC power supply, converts it into a predetermined DC power supply, and supplies it to the LED element 35.

Further, the lighting circuit 18 has a function of detecting the brightness of the lighting space in which the lighting fixture 10 is installed by the illuminance sensor 63 and automatically adjusting the output of the LED element 35. This function is automatically enabled when the luminaire 10 has an illuminance sensor (see FIG. 3) and the illuminance sensor 63 is electrically connected to the lighting circuit 18, and the illuminance 10 has an illuminance. In the case of the specification without a sensor (see FIG. 4), if the illuminance sensor 63 is not electrically connected to the lighting circuit 18, it is automatically disabled. A connector 64 for connecting an illuminance sensor is attached to the side wall portion 53 of the case 16, and this connector 64 and the lighting circuit 18 are electrically connected.

As shown in FIG. 3, when the illuminance fixture 10 has an illuminance sensor, the illuminance sensor 63 is housed in a sensor case 65 attached to the upper surface of the fixture body 11 and the frame body 15, and the sensor window hole 50 of the frame body 15 is accommodated. It is placed facing the. By connecting the connector 67 of the electric wire 66 connected to the illuminance sensor 63 to the connector 64, the illuminance sensor 63 and the lighting circuit 18 are electrically connected.

As shown in FIG. 4, when the luminaire 10 has a specification without an illuminance sensor, the illuminance sensor 63 and the sensor case 65 are not used. In this case, the cap 68 is attached to the connector 64, and the charged portion of the connector 64 is covered so as not to be exposed to the outside.

Next, in order to assemble the lighting fixture 10, the case 16 to which the adapter guide 17 and the lighting circuit 18 are attached is attached to the upper surface of the fixture main body 11. Further, the frame body 15 is attached to the upper surface of the instrument body 11.

Each board 12 is placed on the board placement part 22 in a state where the board placement part 22 of the instrument main body 11 is turned upside down so that the board placement part 22 faces upward, and each fitting hole 34 of the board 12 is formed in the board placement part 22. Concavo-convex fitting is performed on each convex portion 30. As a result, the position of the substrate 12 in the direction (horizontal direction) along the surface of the substrate arranging portion 22 of the instrument main body 11 is positioned and held. Further, wiring is performed between both boards 12 and between the boards 12 and the lighting circuit 18.

While covering the transparent cover 13 so as to cover the substrate 12, each claw portion 44 of the transparent cover 13 is inserted into each claw insertion hole 27 of the instrument main body 11, and the transparent cover 13 is rotated in the mounting rotation direction. As a result, the tip of each claw portion 44 rides on the back side of the instrument body 11 and pulls the translucent cover 13 toward the instrument body 11. At this time, the pressing portion 43 of the translucent cover 13 comes into contact with the inner peripheral side and the outer peripheral side of the substrate 12 and presses the substrate 12 against the instrument main body 11. Then, when each of the claws 44 is hooked on the back side of the instrument body 11, the instrument body 11 and the translucent cover 13 are fixed with the substrate 12 sandwiched between the instrument body 11 and the translucent cover 13.

The screw is screwed into the mounting hole 28 of the instrument body 11 through the screw insertion hole 46 of the translucent cover 13 to fix it, and the translucent cover 13 is restricted from rotating in the removal rotation direction opposite to the mounting rotation direction. To do.

The shade 14 is attached to the shade mounting bracket 31 by covering the instrument main body 11 with the shade 14 so as to cover the substrate 12 and the translucent cover 13, and rotating the shade 14 in a predetermined mounting rotation direction.

Further, as shown in FIG. 3, when the luminaire 10 has an illuminance sensor, the sensor case in which the connector 67 of the electric wire 66 connected to the illuminance sensor 63 is connected to the connector 64 and holds the illuminance sensor 63. Attach 65 to the upper surfaces of the instrument body 11 and the frame 15.

Further, as shown in FIG. 4, when the luminaire 10 has a specification without an illuminance sensor, the illuminance sensor 63 and the sensor case 65 are not used, and the cap 68 is attached to the connector 64.

The assembly order of the luminaire 10 is not limited to such an order.

Then, in order to install the luminaire 10, the adapter guide 17 of the luminaire 10 from which the shade 14 has been removed in advance is attached to the adapter attached to the hook ceiling on the ceiling surface. The wiring derived from the adapter is connected to the lighting circuit 18 side, and the hook sealing and the lighting circuit 18 are electrically connected. Attach the shade 14 to the instrument body 11.

Then, when the commercial AC power is supplied to the lighting circuit 18, lighting power is supplied from the lighting circuit 18 to the plurality of LED elements 35, and the plurality of LED elements 35 are lit.

The light generated by the plurality of LED elements 35 enters the central region 41 of the cover portion 40 of the translucent cover 13, passes through the cover portion 40, and is emitted from the front side of the cover portion 40.

A part of the light incident on the central region 41 of the cover portion 40 is reflected by the cover portion 40 and directed toward the substrate 12, reflected by the reflecting surface 36 of the substrate 12 and directed toward the cover portion 40 again, and transmitted through the cover portion 40. Then, it is emitted from the front side of the cover portion 40.

A part of the light incident on the central region 41 of the cover portion 40 is guided from the central region 41 to the inner peripheral side and the outer peripheral side end regions 42, respectively, through the cover portion 40, and the light guides of the respective end regions 42 are guided. It is emitted from the front side of the end region 42 by the exit portion 47.

Further, the light transmitted through the translucent cover 13 is incident on the shade 14, is transmitted through the shade 14, and is irradiated to the illumination space.

When the lighting fixture 10 has an illuminance sensor, the illuminance sensor 63 detects the brightness of the lighting space in which the lighting fixture 10 is installed, and the lighting circuit 18 automatically adjusts the output of the LED element 35. Further, when the luminaire 10 has a specification without an illuminance sensor, the function of automatically adjusting the output of the LED element 35 according to the brightness of the illuminating space becomes invalid.

Further, the heat generated by the LED element 35 is heat-conducted from the substrate 12 to the instrument body 11, and is efficiently dissipated from the instrument body 11. On the other hand, the heat generated by the lighting circuit 18 is transferred to the case 16 and efficiently dissipated from the case 16. Therefore, the heat generated by the LED element 35 and the heat generated by the lighting circuit 18 are less likely to interfere with each other, and the heat generated by each of them can be efficiently dissipated.

In the lighting fixture 10 configured in this way, the substrate 12 arranged on the substrate arrangement portion 22 of the fixture main body 11 and the convex portion 30 of the substrate arrangement portion 22 are unevenly fitted to each other, and the substrate 12 is positioned on the substrate arrangement portion 22. By holding and attaching the claw portion 44 of the translucent cover 13 to the instrument body 11, the substrate 12 can be covered and the substrate 12 can be sandwiched and fixed between the translucent cover 13 and the instrument body 11, so a screw is used. The board 12 can be positioned and fixed to the instrument body 11 without the need for it, the number of parts can be reduced, and the number of assembly steps can be reduced.

Further, since the pressing portion 43 of the translucent cover 13 that presses the substrate 12 against the instrument main body 11 is located at a position where the light generated by the LED element 35 is not directly incident, it is possible to prevent the shade 14 from having uneven brightness. If the pressing portion 43 is located at a position where the light generated by the LED element 35 is directly incident, the light incident on the pressing portion 43 is concentrated and emitted from the front side of the cover portion 40, and is blocked by the pressing portion 43. The emission of light from the cover portion 40 is reduced, and uneven brightness of the shade 14 is likely to occur.

Further, since the shade mounting bracket 31 is arranged in the recess 24 of the fixture main body 11, it does not protrude to the front side of the substrate 12, the light generated by the LED element 35 is not blocked, and is shadowed by the shade 14 or the like. Can be prevented from being reflected.

In addition, regardless of whether the luminaire 10 has a specification with an illuminance sensor or a specification without an illuminance sensor, the luminaire 10 can be shared with these specifications by arranging a connector 64 for connecting the illuminance sensor 63 in the case 16. it can. Moreover, when the luminaire 10 has a specification without an illuminance sensor, the charging portion of the connector 64 can be prevented from being exposed to the outside by attaching the cap 68 to the connector 64.

Further, FIG. 5 shows the reflection characteristics due to the difference in the distance between the LED element 35 mounted on the substrate 12 and the translucent cover 13. Of the light generated by the LED element 35, a part of the light obliquely incident on the translucent cover 13 is reflected without being transmitted.

At this time, as shown in FIG. 5B, when the distance between the LED element 35 and the translucent cover 13 is wide, the region to which the light of the primary reflection component is directed becomes a wide range, and the light of the primary reflection component is transmitted to the substrate. You will be heading to an area outside of 12. Therefore, the light utilization efficiency is lowered, and in order to improve the light utilization efficiency, a high reflection region must be provided in a wide range including the fixture main body 11.

On the other hand, as shown in FIG. 5A, when the distance between the LED element 35 and the translucent cover 13 is short, the region to which the light of the primary reflection component heads becomes a narrow range, and the light of the primary reflection component becomes a narrow range. It will go to the board 12. Therefore, high light utilization efficiency can be achieved only by providing the reflecting surface 36 having the high reflectance characteristic of the substrate 12.

In this embodiment, the distance between the LED element 35 and the translucent cover 13 shown in FIG. 5A is close, and the distance between the LED element 35 on the inner peripheral side and the translucent cover 13 is about 8 mm, and the outer circumference is about 8 mm. The distance between the LED element 35 on the side and the translucent cover 13 is about 1 mm.

The mounting portion of the translucent cover 13 was the claw portion 44, and the mounted portion of the instrument body 11 was the claw insertion hole 27. It may be a nail part. Further, the mounting portion of the translucent cover 13 and the mounting portion of the instrument main body 11 may have any structure as long as they can be mounted without using separate parts such as screws.

Further, as a concave-convex fitting structure between the substrate 12 and the substrate arrangement portion 22 of the instrument main body 11, a fitting hole 34 is provided in the substrate 12 and a convex portion 30 is provided in the substrate arrangement portion 22, but the convex portion and the substrate arrangement are provided in the substrate 12. The portion 22 may be provided with a recess such as a fitting hole. Further, the substrate arranging portion 22 may be provided with a recess into which the entire substrate 12 is fitted.

Further, the light source unit 19 can be applied not only to a circular ceiling light but also to a quadrangular or polygonal luminaire.

(Appendix) To attach the board to the fixture body, attach the board to the fixture body using a large number of screws in order to efficiently conduct heat generated by the LED element from the substrate to the fixture body to improve heat dissipation. Is common. Further, in order to protect the LED element, a translucent cover covering the substrate may be used. This translucent cover is also often attached to the instrument body using a large number of screws. However, the conventional lighting equipment has a problem that the assembly man-hours increase. An object to be solved by the present invention is to provide a lighting fixture capable of reducing assembly man-hours. According to the present invention, the translucent cover can be positioned and fixed to the main body, and the assembly man-hours can be reduced.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 Lighting equipment
11 Instrument body as a unit body
12 board
13 Translucent cover
16 cases
17 Adapter guide as an instrument mounting part
18 Lighting circuit
19 Light source unit
22 Board layout
30 Convex part as a holding part
35 LED element as a semiconductor light emitting element
43 Pressing part
44 Claw as a mounting part
63 Illuminance sensor
64 connector

Claims (1)

With the main body having a flat arrangement part protruding to the front side so as to surround the central area;
With a plurality of semiconductor light emitting elements arranged in a plane on the front side of the flat arrangement portion;
An annular central region in which direct light generated by the plurality of semiconductor light emitting elements is incident on the plurality of semiconductor light emitting elements, and an annular shape deviated from the central region of the ring to the inner peripheral side and the outer peripheral side, respectively. With a translucent cover arranged in the main body so as to have an end region for guiding light incident on the annular central region and to cover the plurality of semiconductor light emitting elements;
The extension direction of the flat arrangement portion is translucent, has an opening on the back surface side, is located on the back surface side of the flat arrangement portion, is attached to the main body, and covers the translucent cover. With a translucent shade arranged on the front side of the main body;
A lighting fixture that is equipped with the above and is characterized in that the central back side is mounted on the ceiling.

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