JP6886395B2 - lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a luminaire that uses a light emitting element such as an LED as a light source.

In general residential lighting fixtures, an annular fluorescent lamp is used as the main light source, and a cover member (sade) is provided so as to cover the lower side of the annular fluorescent lamp to form a round appearance. It is widespread.

Recently, with the increase in output, efficiency, and widespread use of light emitting elements such as LEDs, the above-mentioned lighting fixtures for general houses, which can be expected to have a long life by using a light emitting element as a light source, have been developed. ..

Conventionally, as a lighting fixture for a general house using an LED as a light source, for example, a lighting device for lighting and controlling the LED is provided around an attachment portion to a hook ceiling installed on a ceiling surface, and the outer periphery of the vicinity of the lighting device is provided. There is one in which a plurality of LEDs are arranged. This LED is arranged so as to emit light toward the outer peripheral side in the lateral direction, and the emitted light is reflected by a reflector provided on the ceiling surface side to irradiate the front side.

Sharp / LED Ceiling Light [Searched on October 5, 2010] (http://www.sharp.co.jp/corporate/news/100819-a-2.html)

However, in the conventional lighting equipment as described above, since the light emitted from the LED emitted in the lateral direction is reflected and irradiated to the front side, the configuration may be complicated. In addition, there arises a problem that it becomes difficult to reduce the thickness of the lighting equipment.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting fixture which has a simplified configuration, can be made thinner, and can make the light emitted from a light emitting element uniform. ..

Luminaire according to an embodiment of the present invention, the instrument body and having an opening at a substantially central portion; formed in a substantially cylindrical shape having a front-side opening and rear-side opening, mounting et is the opening of the front Symbol instrument body, It is extended on the front side, the adapter guide and as a mounting portion; a plurality of light emitting elements are mounted, the mounting surface of the light emitting element is directed toward the front side, the instrument so as to surround the opening of the instrument body a substrate disposed in the body; and the outer periphery side of said adapter guide, disposed on the recess provided in the instrument body having an outer periphery and opposite walls of said adapter guide, which is formed by the space and along the outer periphery of said adapter guide, said plurality of light emitting elements and lighting device for lighting control; equipped with, as seen from the substantially central portion in front of the instrument body, the lighting device, the outer periphery of said adapter guide It is located on the side, and the substrate is located on the outer peripheral side of the adapter guide and outside the lighting device.

According to the embodiment of the present invention, it is possible to provide a luminaire that can be made thinner with a simplified configuration and can make the light emitted from the light emitting element uniform.

It is a perspective view which shows the lighting equipment which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the lighting fixture. It is a top view which shows the lighting fixture as seen from the bottom. It is a top view which shows the light source part in the luminaire. It is a top view which shows the light source part which concerns on 2nd Embodiment of this invention.

Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. In each figure, the wiring connection relationship by the lead wire or the like is omitted. The same parts are designated by the same reference numerals, and duplicate description will be omitted.

The luminaire of the present embodiment is of a type used by being attached to a hook ceiling body as a wiring fixture installed on the fixture mounting surface, and a plurality of light sources arranged in a plurality of rows on the circumference. The room is illuminated by the light radiated from the light source unit having the element.

In FIGS. 1 to 3, the luminaire includes a main body 1, a light source unit 2, a lighting device 3, a mounting unit 4, a cover member 5, and a reflector 6. Further, the adapter A is electrically and mechanically connected to the hook ceiling body Cb installed on the ceiling surface C as the fixture mounting surface. Such a luminaire is formed in a round circular appearance, and the front side is a light irradiation surface and the back side is a mounting surface to the ceiling surface C.

As represented by FIG. 2, the main body 1 is formed in a circular shape from a flat plate of a metal material such as a cold-rolled steel plate, and a lighting device 3 and a mounting portion 4 to be described later are arranged in a substantially central portion. A circular recess 11 and an opening 12 are formed for the purpose of rolling.

The light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21, as will be described with reference to FIG. The substrate 21 has a predetermined width dimension and is formed in a substantially circular shape, is made of a flat plate of glass epoxy resin which is an insulating material, and a wiring pattern is formed by copper foil on the surface side. Further, a white resist layer acting as a reflective layer is applied on the wiring pattern, that is, on the surface of the substrate 21. When the material of the substrate 21 is an insulating material, a ceramic material or a synthetic resin material can be applied. Further, 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 and excellent heat dissipation such as aluminum can be applied.

The light emitting element 22 is an LED, which is a surface mount type LED package. The LED packages are mounted in a plurality of rows along the circumferential direction of the plurality of circle-shaped substrates 21, and in the present embodiment, are mounted in two rows on the inner peripheral side and the outer peripheral side. A plurality of LED packages adjacent to each other in the circumferential direction are arranged on the circumference at substantially equal intervals, and specifically, 44 LEDs are mounted in the same number in two rows on the inner peripheral side and the outer peripheral side. Has been done.

Further, the LED packages in the inner peripheral side and outer peripheral side rows are arranged so as not to overlap each other in the circumferential direction (indicated by d in FIG. 4). More specifically, the LED packages of the other row (for example, the outer peripheral side row) are arranged at substantially the center of the separation distance of each LED package adjacent to each other in the circumferential direction of one row (for example, the inner peripheral side row). The LED packages of one row are arranged at substantially the center of the separation distance of each LED package adjacent to each other in the circumferential direction of the other row, and these are arranged in a continuous mutual arrangement relationship in the circumferential direction.

That is, the same number (44) of light emitting elements 22 in each row are arranged in a plurality of rows (2 rows) on the circumference of substantially concentric circles having different radii, and the rows between adjacent rows (inner circumference side and outer circumference side). ), They are arranged so as to be offset in the circumferential direction, and are arranged in a staggered pattern between adjacent rows.
In this way, since the same number of light emitting elements 22 in each row are mounted, the light emitting elements 22 can be distributed and arranged on the substrate 21 in a well-balanced manner by shifting the positions.

The LED package is roughly composed of an LED chip arranged in a main body made of ceramics and a translucent resin for molding such as an epoxy resin or a silicone resin that seals the LED chip. There is.

The LED chip is a blue LED chip that emits blue light. A phosphor is mixed in the translucent resin, and in order to be able to emit white light, a yellow phosphor that emits yellowish light, which has a complementary color relationship with blue light, is used. There is.

As for the LED, the LED chip may be mounted directly on the substrate 21, or a bullet-shaped LED may be mounted, and the mounting method and format are not particularly limited.

In the light source unit 2 configured in this way, as represented by FIGS. 2 and 3, the substrate 21 is located around the mounting portion 4, and the mounting surface of the light emitting element 22 is on the front side, that is, downward. It is arranged so as to face the irradiation direction of. Further, the substrate 21 is attached by a fixing means such as a screw so that the back surface side of the substrate 21 is in close contact with the inner surface side of the main body 1. Therefore, the substrate 21 is thermally coupled to the main body 21, and the heat from the substrate 21 is conducted to the main body 21 from the back surface side and dissipated.

As shown in FIGS. 2 and 3, the lighting device 3 includes a substantially short cylindrical case, a circuit board 31 mounted and housed in the case, and circuit components mounted on the circuit board. ing. The lighting device 3 is arranged and attached to a recess 11 formed in the central portion of the main body 1, and the adapter A side is electrically connected and connected to a commercial AC power supply via the adapter A. Therefore, the lighting device 3 receives the AC power supply to generate a DC output, supplies the DC output to the light emitting element 22 via the lead wire, and controls the lighting of the light emitting element 22.

The mounting portion 4 is an adapter guide formed in a substantially cylindrical shape, and an engaging port through which the adapter A is inserted and engaged is provided in the central portion of the adapter guide. The adapter guide is arranged so that its outer peripheral surface is located on the inner peripheral side of the case of the lighting device 3, in other words, the lighting device 3 is arranged on the outer peripheral side of the adapter guide. It has become. Further, the adapter guide extends to the front side through the opening 12 of the main body 1.

The mounting portion 4 does not necessarily have to be a member designated as an adapter guide or the like. For example, it may be an opening formed in the main body 1 or the reflector 6, and in essence, it means a member or a portion facing the hook ceiling body Cb as a wiring device and to which the adapter A is engaged. ..

The cover member 5 is made of a material having a translucent property such as acrylic resin and having a diffusive property showing a milky white color, and has a flat circular base portion 51 and a base portion 51 of the base portion 51. It is provided with a side edge portion 52 extending diagonally inward from the outer periphery. The cover member 5 is attached to the outer peripheral edge of the main body 1 so as to cover the front surface side of the main body 1 including the light source portion 2.

As shown in FIG. 2, the reflector 6 is formed from a flat plate of a metal material such as a cold-rolled steel plate into a circular shape having an inclined reflecting surface 61, and is used for operating the adapter A at a substantially central portion. An opening is formed. Therefore, a part of the light emitted from the light emitting element 22 is reflected to the front side by the reflecting surface 61 and is effectively used.

The adapter A is electrically and mechanically connected to the hook ceiling body Cb installed on the ceiling surface C by a hook blade provided on the upper surface side, has a substantially cylindrical shape, and has a pair on both sides of the peripheral wall. The locking portion A1 of the above is provided so as to always project toward the outer peripheral side by a built-in spring. The locking portion A1 is immersive by operating a lever provided on the lower surface side. Further, a power cord (not shown) to be connected to the lighting device 3 is derived from the adapter A, and is connected to the lighting device 3 via a connector.

Next, the mounting state of the lighting fixture on the ceiling surface C will be described. As shown in FIG. 2, a hooking ceiling body Cb is installed on the ceiling surface C. Further, the adapter A is electrically and mechanically connected to the hook ceiling body Cb. From this state, as shown by the arrow in the figure, while aligning the engaging port of the adapter guide as the mounting portion 4 with the adapter A, hold the instrument body until the locking portion A1 of the adapter A is securely engaged with the engaging port of the adapter guide. Perform the installation operation by pushing it up by hand from below.

Further, when removing the instrument main body, the cover member 5 can be removed, and the cover member 5 can be removed by operating the lever provided on the adapter A to disengage the locking portion A1 of the adapter A.

When electric power is supplied to the lighting device 3 in the state of being attached to the ceiling surface C of the luminaire, the light emitting elements 22 are energized via the substrate 21, and each light emitting element 22 is lit. The light emitted from the light emitting element 22 passes through the cover member 5 and is irradiated to the outside.

In this case, since the light emitting elements 22 are arranged in a well-balanced manner by shifting their positions, it is possible to reduce the uneven brightness of the light source unit 2 and make the image of the light emitted from the plurality of light emitting elements uniform. It will be possible.

Further, since the substrate 21 is located around the mounting portion 4 and the mounting surface of the light emitting element 22 is arranged so as to face the front side, the configuration can be simplified, and further, from the substrate 21 It is possible to easily construct a heat radiating structure for radiating heat. For example, as in the present embodiment, it is possible to easily realize a configuration in which the back surface side of the substrate 21 is thermally coupled to the main body 1 and the heat from the substrate 21 is conducted to the main body 21 to dissipate heat. This makes it possible to suppress the temperature rise of the light emitting element 22.

In addition, the lighting device 3 is arranged on the outer peripheral side of the mounting portion 4, and the substrate 21 is located around the mounting portion 4, and the back surface side is thermally coupled to the main body 1, so that the lighting device 3 is lit. Mutual thermal interference between the heat generated by the device 3 and the heat generated by the light emitting element 22 is reduced, and the temperature rise of the light emitting element 22 can be effectively suppressed.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 shows the plane of the light source unit 2 as in FIG. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

In the present embodiment, the light emitting elements 22 are mounted over three rows of the inner peripheral side, the central side, and the outer peripheral side. Then, in each row, the LED packages adjacent to each other in the circumferential direction are arranged on the circumference at substantially equal intervals and mounted in the same number.

Further, the LED packages in the adjacent rows are arranged so as not to overlap each other in the circumferential direction. That is, each LED package in the inner peripheral row and each LED package in the central row are provided with a deviation indicated by d1 in the drawing, and each LED package in the central row and each LED package in the outer peripheral side are provided. Each LED package is provided with a deviation indicated by d2 in the drawing.

Therefore, the same number of light emitting elements 22 in each row (44) are arranged in a plurality of rows (3 rows) on the circumference of substantially concentric circles having different radii, and the rows between adjacent rows (inner circumference side and center side). , The rows on the center side and the outer circumference side) are arranged so as to be offset in the circumferential direction.

In this way, since the same number of light emitting elements 22 in each row are mounted as in the first embodiment, the light emitting elements 22 can be distributed and arranged on the substrate 21 in a well-balanced manner by shifting the positions, and a plurality of light emitting elements can be arranged. It is possible to make the image of the light emitted from the light uniform.

The present invention is not limited to the configuration of each of the above embodiments, and various modifications can be made without departing from the gist of the invention. For example, the light emitting elements are arranged on a substrate in a plurality of rows on the circumference of polygons having substantially the same center of different sizes, and the same number of rows are mounted so as to be offset in the circumferential direction between adjacent rows. You may try to do it. Specifically, if the light emitting elements are mounted on the circumference of the hexagonal polygon, the light emitting elements are arranged on the circumference of the inner hexagon and the circumference of the outer hexagon, and are arranged inside. This is a case where the light emitting elements and the light emitting elements arranged on the outside are arranged so as to be displaced in the circumferential direction.

The substrate is preferably formed in a circular circle shape or a hexagonal or octagonal polygonal shape, but is not limited to this shape. In short, the shape of the substrate is not particularly limited as long as the light emitting elements can be arranged on the circumference or the circumference of the polygon. Further, the substrate may be divided into a plurality of pieces, and the substrates may be combined to form the entire substrate.
Further, in order to improve the uniformity of the light emitted from the light source unit, a diffusion lens may be provided corresponding to the light emitting element, or a light transmittance control means may be provided on the cover member.
Furthermore, solid-state light emitting elements such as LEDs and organic EL can be applied as the light emitting element, and in this case, the number of light emitting elements and the number of rows are not particularly limited.

1 ... Main body, 2 ... Light source, 3 ... Lighting device, 4 ... Mounting part (adapter guide), 5 ... Cover member, 6 ... Reflector, 21 ... Board , 22 ... Light source (LED), C ... Equipment mounting surface (ceiling surface), Cb ... Wiring equipment (hanging ceiling body)

Claims (1)

With the instrument body that has an opening in the center;
It is formed in a substantially cylindrical shape having a front-side opening and rear-side opening, mounting et is the opening of the front Symbol instrument body, and is extended on the front side, and the adapter guide as an attachment portion;
A plurality of light emitting elements are mounted, the mounting surface of the light emitting element is directed toward the front side, and the substrate on which the arranged to the instrument body so as to surround the opening of the pre-SL instrument body;
And the outer periphery side of said adapter guide, a recess provided in said instrument body having an outer periphery and opposite walls of said adapter guide disposed to the space formed by and along the outer periphery of said adapter guide , With a lighting device that controls lighting of the plurality of light emitting elements;
Equipped with
The lighting device is located on the outer peripheral side of the adapter guide when viewed from substantially the front of the central portion of the fixture body, and the substrate is located on the outer peripheral side of the adapter guide and outside the lighting device. Lighting equipment to do.

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