JP2020145209A - Luminaire - Google Patents

Abstract

To provide a luminaire that uses light emitting elements such as LEDs as light sources for realizing appropriate light distribution.SOLUTION: A luminaire comprises: a main body 1 attached to a ceiling surface C; a plurality of indirect light source parts 9 provided on a back side of the main body 1; an attachment spring member 10 arranged in a region surrounded by the indirect light source parts 9, and comprising a contact part in contact with the ceiling surface C; a plurality of main light source emitting elements (light sources 2) arranged so that a light emitting direction is on a front side of the main body 1; and a cover member provided so as to cover the front side of the main body 1.SELECTED DRAWING: Figure 18

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.

Conventionally, in lighting fixtures for general houses, an annular fluorescent lamp is used as a main light source, and a small light bulb having a relatively small light output suitable for a nightlight is used as a nightlight in addition to the main light source.

On the other hand, recently, with the increase in output, efficiency and widespread use of light emitting elements such as LEDs, lighting fixtures that can be expected to have a long life by using a plurality of light emitting elements as a light source have been developed.

Japanese Unexamined Patent Publication No. 2005-142137

However, it may not be possible to say that the above-mentioned conventional technique has realized an appropriate light distribution.

The present invention has been made in view of the above problems, and an object of the present invention is to realize an appropriate light distribution.

The luminaire according to the embodiment of the present invention is arranged in a region surrounded by a main body mounted on a ceiling surface, a plurality of indirect light emitting elements provided on the back side of the main body, and the indirect light emitting element. A contact portion that abuts on the ceiling surface, a plurality of main light source light emitting elements arranged so that the light emitting direction is on the front side of the main body, and a cover member provided so as to cover the front side of the main body. Equipped with.

According to the embodiment of the present invention, an appropriate light distribution can be realized.

It is a perspective view which shows the lighting equipment which concerns on 1st Embodiment of this invention. It is an exploded perspective view which shows the lighting fixture. It is a schematic plan view which shows from the bottom with the cover member and the lighting device cover removed in the lighting fixture. It is sectional drawing which shows the lighting fixture. FIG. 4 is an enlarged view showing a part A in FIG. It is a top view which shows the substrate in the lighting fixture. It is the cross-sectional view which shows in a partially enlarged state in the state which combined the light source part and the diffusion member in the luminaire. It is sectional drawing which enlarges and shows the part of the light emitting element as an auxiliary light source in the state which combined the light source part and the diffusion member in the luminaire. It is a top view which shows the specific substrate in the lighting equipment which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the state which combined the light source part and the diffusion member in the luminaire. It is a top view which shows the specific substrate in the lighting equipment which concerns on 3rd Embodiment of this invention. It is sectional drawing which shows the state which combined the light source part and the diffusion member in the luminaire. It is a perspective view which shows the lighting equipment which concerns on 4th Embodiment of this invention. It is an exploded perspective view of the front side which shows the luminaire. It is an exploded perspective view of the back side which shows the lighting fixture. It is a top view which shows by removing the cover member and the cover of a light source part in the luminaire. It is a perspective view of the back side which shows the lighting fixture. It is a vertical cross-sectional view which shows the state which the luminaire is attached to the ceiling surface.

Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 8. In each figure, the wiring connection relationship by the lead wire or the like may be omitted. The same parts are designated by the same reference numerals, and duplicate description will be omitted.

The luminaire of the present embodiment is for a general house used by being attached to a hook sealing body as a wiring fixture installed on a fixture mounting surface, and is a light source having a plurality of light emitting elements mounted on a substrate. The room is illuminated by the light radiated from the part.

In FIGS. 1 to 4, the luminaire includes a main body 1, a light source unit 2, a diffusion member 3, a lighting device 4, a lighting device cover 5, a mounting portion 6, and a cover member 7. Further, the adapter A is provided which 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 shown in FIGS. 2 to 5, the main body 1 is a chassis formed in a circular shape from a flat plate of a metal material such as a cold-rolled steel plate, and a mounting portion 6 to be described later is arranged at a substantially central portion thereof. Circular opening 11 is formed. Further, a stepped portion 13 toward the back surface side is formed on the outer peripheral side of the flat portion 12 on the inner surface side to which the light source portion 2 is attached, and a gutter-shaped recess 14 is formed. Further, an elastic member 15 is provided on the back surface side of the main body 1.

The light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 as a main light source mounted on the substrate 21, as will be described with reference to FIG. 6 (in FIG. 2, the light emitting elements 22). Is omitted). The substrate 21 is arranged so that four arc-shaped substrates 21 having a predetermined width dimension are joined to each other, and is formed in a substantially circular shape as a whole. That is, the substrate 21 formed in a substantially circular shape as a whole is composed of four divided substrates 21. The substrates 21 are electrically connected to each other by the connector Cn at the divided portion D (see FIG. 3).

By using the substrate 21 divided in this way, the divided portion D of the substrate 21 can absorb the thermal shrinkage and suppress the deformation of the substrate 21. It is preferable to use the substrate 21 divided into a plurality of parts, but it is also possible to use a single substrate integrally formed in a substantially circle shape.

The substrate 21 is made of a flat plate of glass epoxy resin (FR-4) which is an insulating material, and a wiring pattern is formed on the surface side by copper foil. 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 such as aluminum having an insulating layer laminated on one surface of a base plate having good thermal conductivity and excellent heat dissipation can be applied.

The light emitting element 22 is an LED, which is a surface mount type LED package. The LED packages are arranged in a plurality of rows along the circumferential direction of the plurality of circle-shaped substrates 21, that is, on a substantially circumferential circumference centered on the mounting portion 6, and in the present embodiment, in two rows on the inner peripheral side and the outer peripheral side. It has been implemented over. Further, as the LED package, one having a neutral white color N and one having a light bulb color L are used, and these are arranged alternately, and the light emitting elements 22 adjacent to each row are arranged at substantially equal intervals. It is arranged with a space. Color matching is possible by adjusting the current flowing through the LED package of the neutral white N and the light bulb color L.

Further, as shown in FIG. 6, the separation distance L1 between the light emitting elements 22 adjacent in the circumferential direction is arranged to be shorter than the separation distance L2 between the light emitting elements 22 adjacent in the radial direction. That is, the relationship is L1 <L2.

On the specific substrate 21a (right side in FIG. 3, right side in FIG. 6, upper right side in FIG. 6), a light emitting element 22a for a nightlight as an auxiliary light source is mounted on the same substrate as the light emitting element 22 as a main light source. The light emitting element 22a is arranged between rows on the inner peripheral side and the outer peripheral side of the light emitting element 22 which is the main light source, and an LED package having the same specifications as that of the light bulb color L in the main light source mounted in a circle shape is available. It is used. As a result, the members are standardized, and the efficiency of mounting man-hours can be improved.

Further, the light emitting element 22a for the nightlight and the light emitting element 22 of the main light source are arranged in different directions by about 90 degrees. That is, the light emitting element 22a for the nightlight is arranged so that the long side of the rectangular outer shape faces in the circumferential direction. As a result, the arrangement of the plurality of main light sources with the light emitting elements 22 is balanced.

Further, the light emitting element 22a for the nightlight can be dimmed independently of the light emitting element 22 which is the main light source. Therefore, the user can adjust the brightness to a desired level and turn it on as a nightlight.

If the light emitting element 22a for the nightlight is mounted on a board different from the board 21 on which the light emitting element 22 as the main light source is mounted, it is necessary to configure a wiring connection relationship with a lead wire or the like. It can be complicated. In the present embodiment, since the light emitting element 22 as the main light source and the light emitting element 22a for the nightlight are mounted on the same substrate, it is possible to omit the lead wire and the like or shorten the wiring length thereof. The connection relationship can be simplified.

Further, as shown in FIG. 3, a power supply connection portion 23 is provided on the inner peripheral side of the specific substrate 21a. Specifically, the power supply connection unit 23 is a connector, and an output line W derived from the lighting device 4 described later is connected to each light emitting element 22 as a main light source via a wiring pattern of the substrate 21. Power is supplied to the light emitting element 22a as an auxiliary light source.

The power supply connection unit 23 and the light emitting element 22a for the nightlight are provided on one specific substrate 21a of the divided substrates 21. Moreover, the power supply connection portion 23 and the light emitting element 22a for the nightlight are arranged so that the separation distance does not become long. That is, the light emitting element 22a for the nightlight is arranged from the power supply connection portion 23 in the substantially radial direction centered on the mounting portion 6. Therefore, the power supply connection portion 23 and the light emitting element 22a for the nightlight are arranged on the same straight line in the radial direction, and the distance between them is shortened.

Therefore, it is possible to achieve the effect of simplifying the wiring connection relationship from the power supply connection unit 23 to the light emitting element 22a for the nightlight, specifically, the layout of the wiring pattern.

The light emitting elements 22 do not necessarily have to be mounted in a plurality of rows. For example, it may be mounted in a row along the circumferential direction. The number and number of rows of the light emitting elements 22 can be appropriately set according to the desired output.

The LED package is generally composed of an LED chip arranged in a cavity made of ceramics or synthetic resin, and a translucent resin for molding such as an epoxy resin or a silicone resin that seals the LED chip. It is configured. The LED chip is a blue LED chip that emits blue light. A phosphor is mixed in the translucent resin so that light of neutral white or light bulb color can be emitted.

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.

The diffusion member 3 is a lens member, and as described with reference to FIGS. 7 and 8, it is made of, for example, a transparent synthetic resin having an insulating property such as polycarbonate or acrylic resin, and the light emitting element 22 is arranged. It is integrally formed along the line in a substantially circular shape, and is arranged so as to cover the entire surface of the substrate 21 on the mounting surface side including the light emitting element 22.

Further, as typified by FIGS. 5 and 7, the lens member has a substantially circular inner peripheral side portion and an outer peripheral side portion having two chevrons in the circumferential direction facing the light emitting element 22. Therefore, the ridges 31 having a constant cross-sectional shape are continuously formed. Inside the ridge portion 31, U-shaped grooves 32 are continuously formed along the circumferential direction. Therefore, the U-shaped groove 32 is arranged so as to face the plurality of light emitting elements 22, and the plurality of light emitting elements 22 are housed and covered in the U-shaped groove 32. It is in a state.

Further, a flat portion 33 extending in the width direction is formed from these ridge portions 31, so that the entire surface of the substrate 21 on the mounting surface side is covered.

According to the lens member configured in this way, as shown in FIG. 5, the light emitted from the plurality of light emitting elements 22 is diffused mainly in the inner peripheral direction and the outer peripheral direction on the circumference by the ridge portion 31. Is radiated. That is, the light emitted from the light emitting element 22 is mainly diffused and radiated in the radial direction with the circle-shaped center where the light emitting element 22 is arranged as the origin.

Therefore, it is possible to improve the uniformity of the irradiation light by the light emitted from the plurality of light emitting elements 22 by the lens member. Further, it is possible to suppress a feeling of graininess due to the brightness of each light emitting element 22. In this case, it is desirable to set the light distribution angle due to diffusion to about 120 degrees to 160 degrees.

Further, the lens member diffuses the light emitted from the light emitting element 22 mainly in the radial direction, but the separation distance L1 between the light emitting elements 22 adjacent in the circumferential direction is the distance between the light emitting elements 22 adjacent in the radial direction. Since it is arranged so as to be shorter than the distance L2, it is possible to make the brightness of the light emitting surface uniform.

Further, since the diffusion member 3 is formed with a flat portion 33 to cover the entire surface of the substrate 21 on the mounting surface side, the charging portion is covered and protected by the diffusion member 3.

As typified by FIG. 8, the portion of the diffusion member 3 corresponding to the portion where the power supply connection portion 23 and the light emitting element 22a for the nightlight are arranged is formed substantially flat so as to cover them. There is. In this case, the light emitting element 22a for the nightlight is arranged between the two ridges 31 at a predetermined dimension apart from the ridge 31. Therefore, it is possible to prevent the light emitted from the light emitting element 22a from being blocked by the protruding portion 31 as an obstacle. Further, since the projecting portion 31 is not arranged corresponding to the light emitting element 22a for the nightlight, the light emitting element 22a functions as a point light source having relatively directivity.

The diffusion member 3 does not have to be integrally formed in a substantially circular shape. For example, corresponding to the divided substrates 21, each of these substrates 21 may be divided and formed. In this case, each of the plurality of light emitting elements 22 mounted on one substrate 21 is continuously covered with the diffusion member 3.

Further, various shapes can be adopted as the cross-sectional shape of the protruding portion 31 of the lens member. For example, as an asymmetrical shape, the light diffusing effect toward the inner peripheral side and the light diffusing effect toward the outer peripheral side can be made different. In this case, it is possible to brighten the inner peripheral side by making the diffusion effect of the light toward the inner peripheral side larger than the diffusion effect of the light toward the outer peripheral side. Further, a surface that totally reflects the light emitted from the light emitting element 22 may be formed so as to effectively diffuse the light. Furthermore, a concave surface may be formed to realize a diffusion effect.

In addition, the diffusion member 3 is not limited to the lens member, and a diffusion sheet or the like may be applied.

In the light source unit 2 configured as described above, as represented by FIGS. 4 and 5, the substrate 21 is located around the mounting portion 6, and the mounting surface of the light emitting element 22 is on the front side, that is, on the front side. It is arranged so as to face the lower irradiation direction. Further, the back surface side of the substrate 21 is attached in surface contact so as to be in close contact with the flat portion 12 on the inner surface side of the main body 1. Specifically, the diffusion member 3 is overlapped from the front surface side of the substrate 21, and the diffusion member 3 is attached to the main body 1 by a fixing means such as a screw S, so that the substrate 21 becomes the main body 1 and the diffusion member 3. It is sandwiched between the two and is pressed and fixed. That is, the substrate 21 and the diffusion member 3 are fastened together by one screw S.

Therefore, the substrate 21 is thermally coupled to the main body 1, and the heat from the substrate 21 is conducted to the main body 1 from the back surface side and dissipated. The surface contact between the substrate 21 and the main body 1 is not limited to the case where the entire surface of the back surface side of the substrate 21 comes into contact with the main body 1. It may be a partial surface contact.

In addition, since the flat portion 33 of the diffusion member 3 is in surface contact with the mounting surface side of the substrate 21, heat is transferred to the diffusion member 3 from the mounting surface side of the substrate 21 and passes through the diffusion member 3. It becomes possible to dissipate heat. That is, heat can be dissipated from the front side of the substrate 21 as well.

As shown in FIGS. 2 to 4, the lighting device 4 includes a circuit board 41 and circuit components 42 such as a control IC, a transformer, and a capacitor mounted on the circuit board 41. The circuit board 41 is formed in a substantially arc shape so as to surround the periphery of the mounting portion 6, and the adapter A side is electrically connected and connected to the commercial AC power supply via the adapter A. Therefore, the lighting device 4 receives the AC power supply to generate a DC output, supplies the DC output from the output line W to the light emitting element 22 via the power supply connection unit 23, and controls the lighting of the light emitting element 22. It has become.

Such a lighting device 4 is arranged between the mounting portion 6 and the light source portion 2, that is, the substrate 21.

As shown in FIGS. 2 and 4, the lighting device cover 5 is formed in a substantially short cylindrical shape by a metal material such as a cold-rolled steel plate, and is attached to the main body 1 so as to cover the lighting device 4. The side wall 51 is inclined so as to expand toward the back surface side, and the front wall 52 is formed with an opening 53 corresponding to the mounting portion 6. Therefore, a part of the light emitted from the light emitting element 22 is reflected to the front side by the side wall 51 and is effectively used. Further, an arc-shaped guide recess 54 that is concave toward the back surface is formed on the peripheral edge of the opening 53.

The mounting portion 6 is an adapter guide formed in a substantially cylindrical shape, and an engaging port 61 through which the adapter A is inserted and engaged is provided in the central portion of the adapter guide. This adapter guide is arranged corresponding to the opening 11 formed in the central portion of the main body 1. A base is formed on the outer peripheral portion of the adapter guide so as to project from the outer peripheral portion, and an electrical auxiliary component 62 such as an infrared remote control signal receiving unit and an illuminance sensor is arranged on the base. ..

The mounting portion 6 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 like, and in short, it means a member or a portion facing the hook sealing body Cb as a wiring device and to which the adapter A is engaged.

The cover member 7 is formed in a substantially circular shape from a material having a translucent property such as acrylic resin and having a diffusive property showing a milky white color, and a non-transmissive circular decorative cover 71 is formed in the central portion. Is installed. Further, the decorative cover 71 is formed with a light receiving window 72 having a substantially triangular shape and translucency so as to face the electrical auxiliary component 62. Further, a protruding pin 73 projecting in the inner surface direction is formed near the center of the cover member 7 on the inner surface side.

The cover member 7 is detachably 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. Specifically, by rotating the cover member 7, a cover mounting bracket (not shown) provided on the cover member 7 is engaged with a cover receiving bracket 75 arranged in a recess 14 on the outer peripheral edge of the main body 1. Can be installed by

In the state where the cover member 7 is attached to the main body 1 in this way, the inner surface side of the cover member 7 comes into surface contact with the front wall 52 of the lighting device cover 5, mainly as shown in FIG. Therefore, it is possible to conduct heat generated from the lighting device 4 and the like to the lighting device cover 5 and further to the cover member 7 to promote heat dissipation.

The distance between the diffusion member 3 and the cover member 7 is set to 20 to 60 mm, preferably 30 to 50 mm. As a result, the uniformity of the irradiation light becomes good, and the heat conducted from the mounting surface side of the substrate 21 to the diffusion member 3 is effectively dissipated via the cover member 7.

Here, the cover member 7 is rotated and attached to the main body 1, but it is necessary to align the position of the light receiving window 72 so as to face the electrical auxiliary component 62. Therefore, in the present embodiment, although detailed description is omitted, the position regulating means is composed of the protruding pin 73 formed on the cover member 7 side and the guide recess 54 formed on the lighting device cover 5. .. By this position regulating means, the light receiving window 72 is positioned so as to face the electrical auxiliary component 62, and for example, the infrared remote control signal receiving unit can receive the control signal from the infrared remote control transmitter.

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 to be connected to the lighting device 4 is derived from the adapter A, and is connected to the lighting device 4 via a connector (see FIG. 3).

Next, the mounting state of the luminaire on the ceiling surface C will be described with reference to FIG. First, the adapter A is electrically and mechanically connected to the hook ceiling body Cb installed on the ceiling surface C in advance. From this state, while aligning the engaging port 61 of the adapter guide as the mounting portion 6 with the adapter A, push up the main body 1 by hand from below until the locking portion A1 of the adapter A is securely engaged with the engaging port 61 of the adapter guide. And perform the installation operation. Then, the cover member 7 is attached to the main body 1. This mounting completed state is the state shown in FIG. 4, and at this time, the elastic member 15 is interposed between the ceiling surface C and the back side of the main body 1 in a close contact state, and the luminaire is fixed to the ceiling surface C. Become.

Further, when removing the lighting equipment, the cover member 7 can be removed, and the cover member 7 can be removed by operating the lever provided on the adapter A to disengage the locking portion A1 of the adapter A.

When power is supplied to the lighting device 4 in the state of being mounted on 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 is diffused in the radial direction by the diffusion member 3 that continuously covers the plurality of light emitting elements 22, and is also radiated to the front side. The light radiated to the front side passes through the cover member 7 and is radiated to the outside. Therefore, it is possible to improve the uniformity of the irradiation light and suppress the feeling of graininess due to the brightness of each light emitting element 22.

Further, a part of the light toward the inner peripheral side in the radial direction is reflected to the front side by the inclined side wall 51 in the lighting device cover 5 and is effectively used.

Further, when the light emitting element 22a for the nightlight is turned on, it is possible to prevent the light emitted from the light emitting element 22a from being blocked by the projecting portion 31.

On the other hand, since the back surface side of the substrate 21 is in surface contact with the main body 1, the heat generated from the light emitting element 22 is effectively conducted to the main body 1 and dissipated over a wide area. Further, since a step portion 13 is formed along the outer periphery of the substrate 21 in the vicinity of the outer peripheral side of the substrate 21, the heat dissipation area can be increased by the step portion 13, and the heat dissipation effect on the outer peripheral portion of the main body 1 can be increased. Can be increased. In addition, the stepped portion 13 can exert the reinforcing effect of the main body 1.

Further, since the lighting device 4 is arranged between the mounting portion 6 and the substrate 21, the lighting device 4 is less susceptible to thermal influence from the substrate 21. This is because the heat of the substrate 21 is conducted toward the outer peripheral direction of the main body 1 and tends to be dissipated.

Further, since the cover member 7 is in surface contact with the lighting device cover 5, the heat generated from the lighting device 4 is conducted to the lighting device cover 5 and further conducted to the cover member 7 to dissipate heat. Can be done.

In addition, since the flat portion 33 of the diffusion member 3 is in surface contact with the mounting surface side of the substrate 21, heat can be dissipated from the mounting surface side of the substrate 21 via the diffusion member 3 and also from the front side. Become. Further, in this case, since the diffusion member 3 covers the entire surface of the substrate 21 on the mounting surface side, the charging portion is protected.

As described above, according to the present embodiment, since the light emitting element 22 as the main light source and the light emitting element 22a for the nightlight are mounted on the same substrate, the lead wire and the like are omitted or the wiring length thereof is shortened. Is possible, and the wiring connection relationship can be simplified. Moreover, since the distance between the power supply connection unit 23 and the light emitting element 22a for the nightlight is short, it is possible to provide a lighting fixture that can further simplify the wiring connection relationship.

Next, a second embodiment of the present invention will be described with reference to FIGS. 9 and 10. FIG. 9 shows a specific substrate 21a, and FIG. 10 shows a cross section in a state where the diffusion member 3 is arranged on the specific substrate 21a. 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, as shown in FIG. 9, the light emitting element 22a for the nightlight as an auxiliary light source is mounted inside the row on the inner peripheral side of the light emitting element 22 which is the main light source. In such a configuration, as shown in FIG. 10, the light emitting element 22a for the night light is arranged so as to be separated from the projecting portion 31 of the diffusion member 3 by a predetermined dimension.

Therefore, as in the first embodiment, it is possible to prevent the light emitted from the light emitting element 22a from being blocked by the protruding portion 31 as an obstacle.

Next, a third embodiment of the present invention will be described with reference to FIGS. 11 and 12. FIG. 11 shows a specific substrate 21a, and FIG. 12 shows a cross section in a state where the diffusion member 3 is arranged on the specific substrate 21a. 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, as shown in FIG. 11, the light emitting element 22a for a nightlight as an auxiliary light source is mounted outside the row on the outer peripheral side of the light emitting element 22 which is the main light source. Even in such a configuration, as shown in FIG. 12, the light emitting element 22a for the night light is arranged so as to be separated from the projecting portion 31 of the diffusion member 3 by a predetermined dimension.

Therefore, as in the first embodiment, it is possible to prevent the light emitted from the light emitting element 22a from being blocked by the protruding portion 31 as an obstacle.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 13 to 18. In this embodiment, the same or corresponding parts as those in the first embodiment may be designated by the same reference numerals and described in a simplified manner.

Similar to the first embodiment, the lighting fixture of the present embodiment is for a general house used by being attached to a hook sealing body as a wiring fixture installed on the fixture mounting surface, and is mounted on a substrate. The room is illuminated by the light radiated from the light source unit having the plurality of light emitting elements.

The luminaire includes a main body 1, a light source unit 2, a light source unit cover 3, a lighting device 4, a lighting device cover 5, a center member Cm, an adapter guide 6 as a mounting portion, and a cover member 7. ing. Further, the luminaire includes an optical sensor 8 and an indirect light source unit 9.

Further, it is provided with an adapter A (see FIG. 18) that is electrically and mechanically connected to a hook ceiling body Cb installed on the ceiling surface C as an instrument mounting surface, and an infrared remote control transmitter Rc. It is formed in a circular shape, and the front side is a light irradiation surface and the back side is a mounting surface to the ceiling surface C.

As shown in FIGS. 14 to 18, the main body 1 is a chassis formed in a circular shape from a flat plate of a metal material such as a cold-rolled steel plate, and an adapter guide 6 to be described later is arranged in a substantially central portion. A shaped opening 11 is formed. A part of the circular shape of the opening 11 projects outward and is formed in a shape substantially equal to the outer shape of the adapter guide 6.

On the outer peripheral side of the opening 11, a protruding portion 12 having a quadrangular shape with rounded corners and protruding toward the back surface is formed. Further, on the outer peripheral side of the protruding portion 12, a circular annular protruding portion 13 projecting to the front surface side is formed. Further, on the outer peripheral side of the protruding portion 13, a circular annular protruding portion 14 is formed so as to be continuous with the protruding portion 13 in the radial direction so as to project to the back surface side, in other words, to form a recess on the front surface side. ..

A cover member receiving metal fitting 75 to which the cover member 7 is detachably attached is arranged in the recess formed by the protruding portion 14. These projecting portions 12, 13 and 14 mainly function as attachment portions for members to be attached to the chassis, and also have a function of reinforcing the strength of the chassis and a function of increasing the heat dissipation area.

As shown in FIGS. 14, 16 and 18, the light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21. The substrate 21 is arranged so that four arc-shaped substrates 21 having a predetermined width dimension are joined to each other, and is formed in a substantially circular shape as a whole. That is, the substrate 21 formed in a substantially circular shape as a whole is composed of four divided substrates 21.

By using the substrate 21 divided in this way, it is possible to absorb the thermal shrinkage at the divided portion of the substrate 21 and suppress the deformation of the substrate 21. It is preferable to use the substrate 21 divided into a plurality of parts, but it is also possible to use a single substrate integrally formed in a substantially circle shape.

The substrate 21 is made of a flat plate of glass epoxy resin (FR-4) which is an insulating material, and a wiring pattern is formed on the surface side by copper foil. The light emitting element 22 is electrically connected to this wiring pattern. 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 such as aluminum having an insulating layer laminated on one surface of a base plate having good thermal conductivity and excellent heat dissipation 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, in three rows on the circumference of substantially concentric circles having different radii. That is, it is mounted over the inner peripheral side row, the outer peripheral side row, and the intermediate row between the inner peripheral side row and the outer peripheral side row.

The LED package is generally composed of an LED chip arranged in a cavity made of ceramics or synthetic resin, and a translucent resin for molding such as an epoxy resin or a silicone resin that seals the LED chip. It is configured.

The LED packages mounted on the inner circumference side row and the outer circumference side row have emission colors of neutral white (N) and light bulb color (L), and these are on the circumference. They are arranged alternately at approximately equal intervals. The LED chip is an LED chip that emits blue light. A phosphor is mixed in the translucent resin, and in order to be able to emit white light of neutral white (N) and light bulb color (L), it is mainly in a complementary color relationship with blue light. A yellow phosphor that emits a certain yellowish light is used.

The LED packages mounted in the middle row are those that emit red (R), green (G), and blue (B). Therefore, the LED chips are LED chips that emit red, green, and blue light, respectively, and these LED chips are sealed with a translucent resin for molding.

These LED packages that emit light in red (R), green (G), and blue (B) are sequentially spaced on the circumference in order of red (R), green (G), and blue (B) at approximately equal intervals. It is placed open.

The arrangement of red (R), green (G), and blue (B) in the LED package may not be specified and may be in any order. For example, the arrangement of green (G), red (R), and blue (B) may be arranged in this order. You may. Further, it is preferable to arrange the adjacent LED packages having different emission colors, but the LED packages are not particularly limited. As an example, it is also possible to arrange two of the same color continuously, such as red (R), red (R), green (G), green (G), blue (B), and blue (B). is there.

In this way, a plurality of light emitting elements 22 that emit light in neutral white (N) and light bulb color (L) are arranged in a row on the circumference of substantially concentric circles having different radii, and the circle having substantially the same center as the circle. A plurality of light emitting elements 22 that emit light in neutral white (N) and light bulb color (L) on the circumference and emit red (R), green (G), and blue (B) in a row. The light emitting element 22 of the above is arranged.

Therefore, a plurality of light emitting elements 22 having different light emitting colors, that is, light emitting elements 22 that emit light in neutral white (N), light bulb color (L) red (R), green (G), and blue (B) are arranged. Therefore, the range of light colors that can be expressed by mixing these lights is wide, and the light colors can be appropriately adjusted by adjusting the output of the light emitting element 22.

As mainly shown in FIG. 16, on a specific substrate 21a (upper right side in FIG. 16), a light emitting element 22a for a nightlight as an auxiliary light source is mounted on the same substrate as the light emitting element 22 as a main light source. .. The light emitting element 22a is arranged on the inner peripheral side of the light emitting element 22 which is the main light source, and an LED package having the same specifications as that of the light bulb color L in the main light source mounted in a circle is used.

Further, an infrared remote control signal light receiving element 25 and a channel setting switch 26 are mounted on the specific substrate 21a. The infrared remote control signal light receiving element 25 is an infrared light receiving element and is composed of a photodiode or the like which is a photoelectric conversion element. It receives an infrared control signal transmitted from the remote control transmitter Rc and changes the light emitting state of the light emitting element 22. Acts to control.

The channel setting switch 26 switches the channel of the infrared remote control signal light receiving element 25 so that the lighting fixtures can be identified when a plurality of lighting fixtures are installed within a range in which the signal transmitted from the remote control transmitter Rc can be transmitted. It is a channel setting switch. Therefore, only when the setting of this switch 26 and the setting of the channel setting switch provided in the remote control transmitter Rc match, a specific lighting fixture can be controlled by operating the remote control transmitter Rc, and a plurality of lights can be controlled. It prevents the instruments from being operated at the same time.

Since the light emitting element 22a as an auxiliary light source, the infrared remote control signal receiving element 25, and the channel setting switch 26 are mounted on the same substrate as the substrate 21 on which the light emitting element 22 as the main light source is mounted. , Lead wires, etc. can be omitted or the wiring length thereof can be shortened, and the wiring connection relationship can be simplified.

If the light emitting element 22a for the everlasting light and the infrared remote control signal light receiving element 25 are mounted on a board different from the board 21 on which the light emitting element 22 as the main light source is mounted, a wiring connection relationship is configured by lead wires or the like. This can complicate the configuration.

Further, since the light emitting element 22a as the auxiliary light source, the infrared remote control signal light receiving element 25, and the channel setting switch 26 are arranged on the inner peripheral side of the light emitting element 22 which is the main light source, when they are arranged on the outer peripheral side. In comparison, the mounting area can be formed compactly.

By the way, the optical sensor 8 described later is not mounted on the same substrate as the substrate 21 on which the light emitting element 22 which is the main light source is mounted. The optical sensor 8 is configured by being mounted on another substrate. The reason is that the optical sensor 8 has a function of detecting the ambient brightness and automatically controlling the light emitting state of the light emitting element 22, and the lighting equipment having this function and this function are used. This is to facilitate the provision of two types of luminaires with luminaires that are not provided.

That is, when deploying a lighting fixture that does not have a function of automatically controlling the light emitting state, the optical sensor 8 can be easily omitted.

Further, the light emitting element 22a for the nightlight can be dimmed independently of the light emitting element 22 which is the main light source. Therefore, the user can adjust the brightness to a desired level and turn it on as a nightlight.

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 FIG. 18, the substrate 21 is located around the opening 11 of the main body 1, and the mounting surface of the light emitting element 22 is on the front side, that is, on the lower side. It is arranged so as to face the irradiation direction. 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 1, and the heat from the substrate 21 is conducted to the main body 1 from the back surface side and dissipated.

As shown in FIGS. 14 and 18, a light source unit cover 3 is arranged on the front surface side of the light source unit 2. The light source cover 3 is made of, for example, a transparent synthetic resin having an insulating property such as polycarbonate or acrylic resin, and is integrally formed in a substantially circle shape along the arrangement of the light emitting element 22, and includes the light emitting element 22. It is arranged so as to cover the entire surface of the substrate 21 on the mounting surface side.

Therefore, the light emitted from the light emitting element 22 passes through the light source cover 3. Further, since the entire surface of the substrate 21 on the mounting surface side is covered, the charging portion is covered by the light source portion cover 3 to ensure insulation.

As represented by FIGS. 15 and 18, the lighting device 4 includes a circuit board 41 and circuit components 42 such as a control IC, a transformer, and a capacitor mounted on the circuit board 41. The circuit board 41 is formed in a plate shape so as to surround the periphery of the central portion, and the circuit component 42 is mounted on the surface side thereof.

The adapter A side is electrically connected to the circuit board 42, and is connected to a commercial AC power supply via the adapter A. Therefore, the lighting device 4 receives the AC power supply to generate a DC output, supplies the DC output to the light emitting element 22 via a lead wire, and controls the lighting of the light emitting element 22.

Such a lighting device 4 is attached to and covered with the lighting device cover 5, and is arranged on the back side of the main body 1. In this case, the circuit board 41 is mounted with the circuit component 42 facing the front side (lower side in the drawing).

The lighting device cover 5 is formed of a metal material such as a cold-rolled steel plate in a substantially quadrangular short cylinder shape, and the side wall 5a is inclined so as to expand toward the front side, and the back wall 5b. An opening 5c is formed in the central portion.

As shown in FIGS. 15, 17, and 18, the lighting device cover 5 is attached by mounting the flange on the front side on the protrusion 12 of the chassis and screwing it.

As shown in FIGS. 14, 16 and 18, the center member Cm is made of a synthetic resin material such as PBT resin and is formed in a substantially short cylindrical shape, and is hooked at the center portion and faces the sealing body Cb. It has an opening Cm1. Further, an annular space portion Cm2 is formed around the opening Cm1, and an optical sensor 8 is arranged in the space portion Cm2.

Further, a light receiving window Cm3 facing the light receiving portion of the optical sensor 8 is formed on the front wall of the center member Cm.

As shown mainly in FIG. 18, the center member Cm configured in this way is attached by screwing the flange on the back surface side to the chassis via the light source cover 3. The center member Cm can be directly or indirectly mounted on the chassis, and the specific mounting configuration thereof is not limited.

The adapter guide 6 is a member through which the adapter A is inserted and engaged. As shown in FIGS. 15 and 18, the adapter guide 6 is formed in a substantially cylindrical shape, and an engaging port 61 through which the adapter A is inserted and engaged is provided in the central portion. The adapter guide 6 is arranged corresponding to the opening 11 formed in the central portion of the main body 1.

The cover member 7 is formed in a substantially circular shape from a material having a translucent property such as acrylic resin and having a diffusive property showing a milky white color, and a circular opening 7a is formed in the central portion. Further, a cover member decorative frame 7b is attached to the outer peripheral portion of the cover member 7, and the cover member decorative frame 7b is formed of a transparent material made of acrylic resin or the like.

The cover member 7 is detachably 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. Specifically, by rotating the cover member 7, the cover member mounting bracket 74 provided on the cover member 7 is attached to the cover member receiving bracket 75 provided in the recess formed by the protruding portion 14 of the main body 1. It is attached by engaging.

Further, when removing the cover member 7, the cover member 7 can be removed by rotating in the direction opposite to that at the time of mounting and disengaging the cover member mounting bracket 74 and the cover member receiving bracket 75. it can.

As shown in FIGS. 14 and 18, the decorative cover 71 is formed in a circular shape from a material such as a transparent acrylic resin. The decorative cover 71 corresponds to the opening 7a of the cover member 7, is attached to the front wall of the center member Cm, and is arranged so as to cover and close the opening Cm1 of the center member Cm.

As shown in FIG. 18, the optical sensor 8 is an illuminance sensor, which is composed of a sensor element such as a photodiode, and operates so as to detect the brightness of the surroundings and output a detection signal. As a result, when the surroundings are bright, the light source unit 2, that is, the light emitting element 22 is controlled to be dimmed (dimmed) and turned on.

The optical sensor 8 is mounted on the substrate 81, and is arranged and mounted in the space portion Cm2 of the center member Cm so that the light receiving portion thereof faces the light receiving window Cm3. More specifically, the substrate 81 is screwed to the boss of the center member Cm, the optical sensor 8 is housed in the guide cylinder, and the light receiving portion thereof is arranged so as to face the light receiving window Cm3.

The indirect light light source unit 9 is provided on the back surface side of the main body 1 and has a function of mainly illuminating the ceiling surface brightly. As shown in FIGS. 15, 17, and 18, the indirect light source unit 9 includes a substrate 91 and a plurality of light emitting elements 92 mounted on the substrate 91.

The substrate 91 on which the light emitting element 92 is mounted is attached to four places on the side wall 5a of the lighting device cover 5. Further, these substrates 91 are covered with a box-shaped translucent cover 93.

The light emitting element 92 is an LED like the light source unit 2, and is a surface mount type LED package. Then, the light emitting element 92 is connected to the lighting device 4 to control lighting.

Further, on the back side of the lighting device cover 5, a luminaire mounting spring member 10 is mounted in the vicinity thereof corresponding to the mounting position of the indirect light source unit 9. The spring member 10 is made of a metal such as stainless steel, and is formed by bending a horizontally long rectangular leaf spring. The spring member 10 has a fixing portion 10a in the central portion, and an extending portion 10b is formed obliquely upward (back side) from the fixing portion 10a, and the tip side thereof has a quadrangular shape. The contact portion 10c is formed.

The contact portion 10c may be provided with a non-slip portion such as a sponge or silicone rubber by adhesion or the like.

As shown in FIG. 18, 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, 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 project to 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 to be connected to the lighting device 4 is derived from the adapter A, and is connected to the lighting device 4 via a connector.

The infrared remote control transmitter Rc transmits, for example, a specific coded infrared remote control control signal in the form of a pulse having a frequency of 38 kHz. It is provided. By operating the remote control transmitter Rc toward the infrared remote control signal light receiving element 25, it is possible to control the light emitting state of the light emitting element 22 in the light source unit 2, that is, all-light lighting, dimming lighting, extinguishing, and the like.

Next, the mounting state of the luminaire on the ceiling surface C will be described with reference to FIG. First, the adapter A is electrically and mechanically connected to the hook ceiling body Cb installed on the ceiling surface C in advance. With the decorative cover 71 of the lighting fixture removed, the main body 1 is illuminated until the locking portion A1 of the adapter A is securely engaged with the engagement port 61 of the adapter guide while aligning the engagement port 61 of the adapter guide with the adapter A. The mounting operation is performed by manually pushing up from below against the elastic force of the fixture mounting spring member 10.

Next, the decorative cover 71 is attached to cover and close the opening Cm1 at the center of the center member Cm facing the hook sealing body Cb.

In this state, the luminaire mounting spring member 10 is elastically deformed, and the contact portion 10c is elastically in contact with the ceiling surface C. Therefore, the main body 1 of the luminaire is securely fixed to the ceiling surface C by the spring action of the spring member 10.

When removing the lighting fixture, the decorative cover 71 is removed, and the lever provided on the adapter A is operated through the opening Cm1 of the center member Cm to disengage the locking portion A1 of the adapter A. be able to.

When power is supplied to the lighting device 4 in the state of being attached to the ceiling surface C of the luminaire, the light emitting element 22 is energized via the substrate 21 in the light source unit 2, and each light emitting element 22 is lit. The light emitted from the light emitting element 22 to the front side passes through the light source unit cover 3, is diffused by the cover member 7, is transmitted, and is irradiated to the outside. Therefore, the lower part is illuminated in a predetermined light distribution range.

At the same time, when the indirect light source unit 9 is energized, each light emitting element 92 lights up, and the light emitted obliquely upward from the light emitting element 92 passes through the translucent cover 93 and is mainly on the ceiling. The surface is irradiated. Therefore, the ceiling surface becomes brighter, and the feeling of brightness can be improved.

Further, the lighting state of the light source unit 2 and the indirect light light source unit 9 is controlled by the optical sensor 8 that detects the ambient brightness and outputs a detection signal.

In addition, it can be used as a nightlight by lighting the light emitting element 22a which is an auxiliary light source.

On the other hand, the heat generated from the light emitting element 22 is effectively conducted to the main body 1 because the back surface side of the substrate 21 is thermally coupled to the main body 1, and is dissipated over a wide area. Further, since the protruding portions 12, 13 and 14 are formed on the main body 1, the heat dissipation area can be increased, and the heat dissipation effect can be further enhanced. Further, since the lighting device cover 5 is mounted and mounted on the protruding portion 12 of the main body 1, heat is conducted from the main body 1 to the lighting device cover 5 to promote heat dissipation.

As described above, according to the present embodiment, the light emitting element 22a as an auxiliary light source and the infrared remote control signal light receiving element 25 are mounted on the same substrate as the substrate 21 on which the light emitting element 22 as the main light source is mounted. , Lead wires, etc. can be omitted or the wiring length thereof can be shortened, and the wiring connection relationship can be simplified.

Further, since the channel setting switch 26 is mounted on the same board, the effect of simplifying the wiring connection relationship can be further enhanced.

In addition, since the optical sensor 8 is mounted on another substrate 81, it is possible to achieve the effect of facilitating the provision of a plurality of types of lighting fixtures.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without departing from the gist of the invention. Moreover, the above-described embodiment is presented as an example, and is not intended to limit the scope of the invention. For example, as the light emitting element, a solid light emitting element such as an LED or an organic EL can be applied, and in this case, the number of light emitting elements is not particularly limited.

1 ... Main body, 2 ... Light source part, 3 ... Diffusing member (lens member), Light source part cover, 4 ... Lighting device, 5 ... Lighting device cover, 6 ... Mounting part ( Adapter guide), 7 ... Cover member, 8 ... Optical sensor, 9 ... Indirect light source unit, 10 ... Spring member for mounting lighting equipment, 21 ... Board, 21a ... Specific Substrate, 22 ... Light emitting element (LED) as a main light source, 22a ... Light emitting element (LED) as an auxiliary light source, 23 ... Power supply connection (connector), 25 ... Infrared remote control signal reception Element, 26 ... channel setting switch, 31 ... ridge, 33 ... flat part, A ... adapter, C ... fixture mounting surface (ceiling surface), Cb ... wiring fixture ( Hook sealing body), Cm ・ ・ ・ Center member, Rc ・ ・ ・ Infrared remote control transmitter

Claims (1)

With the main body mounted on the ceiling surface;
With a plurality of indirect light emitting elements provided on the back side of the main body;
With a contact portion that is disposed in the area surrounded by the indirect light emitting element and abuts on the ceiling surface;
With a plurality of main light source light emitting elements arranged so that the light emitting direction is on the front side of the main body;
With a cover member provided so as to cover the front side of the main body;
A lighting fixture characterized by being equipped with.

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