JP6105245B2 - LED lighting fixtures - Google Patents

Description

  The present invention relates to an LED lighting apparatus.

  FIG. 11 shows an example of a conventional LED lighting apparatus used as a ceiling light (see, for example, Patent Document 1). The LED lighting fixture 900 shown in the figure has a thin disk shape as a whole, and is attached to the ceiling 990 for use. The LED lighting apparatus 900 includes a plurality of light source units 910, a reflecting surface 920, and a cover 930. Each of the light source units 910 incorporates an LED chip (not shown) and is arranged in a circular shape. The reflective surface 920 is the surface of a metal plate member that has been subjected to, for example, white coating. The light from the light source unit 910 travels downward in the figure by being reflected by the reflecting surface 920. The cover 930 is made of, for example, a resin that transmits light while diffusing, and transmits light reflected by the reflecting surface 920 downward in the figure while diffusing. The LED lighting apparatus 900 is attached to the ceiling 990 through, for example, an installation component 980.

  When the LED lighting apparatus 900 is attached to the ceiling 990, the installation component 980 is handled with the cover 930 removed. For this reason, a region overlapping with the installation component 980 is a non-light emitting region. When the LED lighting apparatus 900 having such a configuration is turned on, there is a problem in that the area near the center of the cover 930 becomes significantly darker than the other areas. In order to alleviate this uneven brightness, for example, a method of forming the cover 930 in a bulged shape can be employed. However, this technique hinders the thinning of the LED lighting apparatus 900.

JP 2008-300203 A

  The present invention has been conceived under the circumstances described above, and an object of the present invention is to provide an LED lighting apparatus capable of irradiating light more uniformly while achieving a reduction in thickness.

  The LED lighting apparatus provided by the present invention includes a first LED board facing an irradiation side that is one side in a first direction, a plurality of first LED chips mounted on the first LED board, and the first LED board in the first direction view. A second LED substrate surrounded by the first LED substrate; a plurality of second LED chips mounted on the second LED substrate; and a plurality of second LED chips positioned on the irradiation side with respect to the plurality of first and second LED chips. An external cover for diffusing and transmitting light from the first and second LED chips, a closed state facing the irradiation side, and an installation opposite to the irradiation side in the first direction in the closed state on the second LED substrate And an open / close mechanism that allows an open state in which a space located on the side is exposed to be exposed.

  In a preferred embodiment of the present invention, an installation component for fixing to a power supply outlet provided on the ceiling is accommodated in the space located on the installation side.

  In a preferred embodiment of the present invention, the second LED board is flush with the first LED board in the closed state.

  In a preferred embodiment of the present invention, a plurality of second LED chips are covered from the irradiation side, and a second inner cover that takes the closed state and the open state together with the second LED substrate is provided.

  In a preferred embodiment of the present invention, the second inner cover is transparent.

  In a preferred embodiment of the present invention, a part of the second inner cover constitutes the opening / closing mechanism.

  In a preferred embodiment of the present invention, the opening / closing mechanism is a hinge.

  In preferable embodiment of this invention, the 1st inner cover which covers the said some 1st LED chip from the said irradiation side is provided.

  In a preferred embodiment of the present invention, the first inner cover is transparent.

  In a preferred embodiment of the present invention, a part of the first inner cover constitutes the opening / closing mechanism.

  In a preferred embodiment of the present invention, the second inner cover is flush with the first inner cover in the closed state.

  In a preferred embodiment of the present invention, the outer cover is detachable, and the second LED substrate can be in contact with the outer cover that is in the mounted state in the open state.

  In a preferred embodiment of the present invention, the plurality of first and second LED chips are arranged on concentric circles.

  In a preferred embodiment of the present invention, the second LED substrate is circular.

  In a preferred embodiment of the present invention, the first LED substrate includes an arc shape.

  In a preferred embodiment of the present invention, the plurality of first and second LED chips are arranged in a matrix.

  In a preferred embodiment of the present invention, the second LED substrate has a rectangular shape.

  In a preferred embodiment of the present invention, the first LED substrate includes a rectangular one.

  In a preferred embodiment of the present invention, a plurality of first LED modules each including the plurality of first LED chips, and a plurality of second LED modules each including the plurality of second LED chips. ing.

  In a preferred embodiment of the present invention, the plurality of first and second LED modules include those that emit different wavelengths, and those that emit light having different wavelengths are in a staggered arrangement.

  In a preferred embodiment of the present invention, one of the lights having different wavelengths is a daylight color and the other is a light bulb color.

  According to such a configuration, by opening the second LED board, it is possible to access a space located closer to the ceiling than the second LED board. On the other hand, the LED lighting fixture as a whole can emit light by closing the second LED substrate. This also allows uniform irradiation without separating the outer cover from the first LED substrate and the second LED substrate. For this reason, it is possible to make the said outer cover into the thin shape close | similar to the said 1st LED board and the said 2nd LED board. Therefore, it is possible to irradiate light more uniformly while reducing the thickness of the LED lighting apparatus.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a principal part top view which shows the LED lighting fixture based on 1st Embodiment of this invention. It is a principal part top view which shows the LED lighting fixture based on 1st Embodiment of this invention. It is sectional drawing which follows the III-III line of FIG. It is a principal part expanded sectional view which shows the LED lighting fixture of FIG. It is a disassembled sectional view which shows the LED lighting fixture of FIG. It is a principal part expanded sectional view which shows the LED lighting fixture of FIG. It is sectional drawing which shows the 1st or 2nd LED module of the LED lighting fixture of FIG. It is a top view which shows the 1st LED board of the LED lighting fixture of FIG. It is a principal part top view which shows the LED lighting fixture based on 2nd Embodiment of this invention. It is a principal part top view which shows the LED lighting fixture based on 2nd Embodiment of this invention. It is sectional drawing which shows an example of the conventional LED lighting fixture.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  FIGS. 1-6 has shown the LED lighting fixture based on 1st Embodiment of this invention. The LED lighting apparatus 101 of this embodiment includes a top plate 200, a plurality of first LED boards 310, a second LED board 320, a first inner cover 410, a second inner cover 420, a plurality of first LED modules 510, and a plurality of second LED modules. 520, a hinge 250, a power supply unit 610, and an external cover 710. The LED lighting fixture 101 is used as a so-called ceiling light by being attached to an installation component 820 mounted on a power supply outlet 810 provided on a ceiling 890 as shown in FIG. 3, for example. For convenience of understanding, the outer cover 710 is omitted in FIG. 1, and the outer cover 710, the first inner cover 410, and the second inner cover 420 are omitted in FIG.

  The top plate 200 is made of, for example, a metal plate and serves as a base for the LED lighting apparatus 101. In the present embodiment, the top plate 200 has a circular shape in plan view. A locking component 210 is attached to the center of the top plate 200. The locking component 210 is made of, for example, metal or resin, and is for fixing the LED lighting apparatus 101 to the ceiling 890 by engaging with the installation component 820.

  The plurality of first LED substrates 310 are arranged so as to cover most of the top plate 200 in plan view, and are supported by the top plate 200, for example. Each first LED substrate 310 is made of, for example, a base material made of glass epoxy resin, ceramics or the like and having an insulating surface, a wiring pattern formed on the base material, and a resist film that partially covers the base material and the wiring pattern And have. The resist film is made of a white resin, for example. A plurality of first LED modules 510 are mounted on each first LED substrate 310. A plurality of first LED substrates 310 are arranged in a region where the plurality of first LED modules 510 are to be arranged. The shape of each first LED substrate 310 can be changed as appropriate. Moreover, it is good also as a structure provided only with the 1st 1st LED board 310. FIG. An opening 311 is formed in one of the illustrated first LED substrates 310. The opening 311 is provided to expose the remote control receiver 620.

  The second LED substrate 320 is surrounded by the plurality of first LED substrates 310, and is located at the center of the LED lighting apparatus 101 in the present embodiment. Second LED substrate 320 is made of, for example, a base material made of glass epoxy resin, ceramics or the like and having an insulating surface, a wiring pattern formed on the base material, and a resist film that partially covers the base material and the wiring pattern. Have The resist film is made of a white resin, for example. A plurality of second LED modules 520 are mounted on the second LED substrate 320. In the present embodiment, the second LED substrate 320 has a rectangular shape. In a state where the LED lighting apparatus 101 is attached to the ceiling 890, the installation component 820 is accommodated in a space located on the ceiling 890 side with respect to the second LED substrate 320.

  The plurality of first LED modules 510 are mounted on the plurality of first LED substrates 310. The plurality of second LED modules 520 are mounted on the second LED substrate 320. In the present embodiment, the plurality of first LED modules 510 and the plurality of second LED modules 520 are arranged in a matrix. In the present embodiment, the first LED module 510 and the second LED module 520 have a common configuration, and have a rectangular shape in plan view. FIG. 7 shows a cross-sectional view of the first LED module 510 and the second LED module 520 in a plane perpendicular to the short direction.

  As shown in FIG. 7, the first LED module 510 and the second LED module 520 include a pair of leads 530, a first LED chip 511 or a second LED chip 521, a sealing resin 550, and a case 540. The pair of leads 530 is made of, for example, a Cu alloy, and the first LED chip 511 or the second LED chip 521 is mounted on one of them. A surface of the lead 530 opposite to the surface on which the first LED chip 511 or the second LED chip 521 is mounted is a mounting terminal 531 used for surface mounting the first LED module 510 and the second LED module 520. The first LED chip 511 and the second LED chip 521 are light sources of the first LED module 510 and the second LED module 520, and can emit blue light, for example. The sealing resin 550 is for protecting the first LED chip 511 and the second LED chip 521. The sealing resin 550 is formed using a light-transmitting resin containing a fluorescent material that emits yellow light when excited by light from the first LED chip 511 and the second LED chip 521. Thereby, the first LED module 510 and the second LED module 520 can appropriately set the color temperature of the emitted light. In the present embodiment, the plurality of first LED modules 510 and the plurality of second LED modules 520 each include one that emits daylight color and one that emits a light bulb color. As said fluorescent substance, it may replace with what emits yellow light, and may mix and use what emits red light, and what emits green light. The case 540 is made of, for example, a white resin, and is for reflecting upward the light emitted from the first LED chip 511 and the second LED chip 521 upward. Note that the first LED chip 511 and the second LED chip 521 may be of a so-called two-wire type that is connected to a pair of leads 530 by two wires.

  FIG. 8 shows a certain first LED substrate 310 and a plurality of first LED modules 510 mounted thereon. In the drawing, the first LED module 510 indicated by a white square emits a daylight color, and the first LED module 510 indicated by a gray square emits a light bulb color. The first LED module 510 that emits the daylight color and the first LED module 510 that emits the light bulb color are arranged so as not to be adjacent to each other, and are arranged in a staggered manner. The plurality of second LED modules 520 also include those that emit daylight and those that emit light bulbs, and are arranged in a staggered manner.

  The first inner cover 410 covers the plurality of first LED modules 510 and the plurality of first LED substrates 310, and is made of a transparent resin in the present embodiment. The first inner cover 410 is for preventing the first LED module 510 from being accidentally touched when the LED lighting apparatus 101 is installed on the ceiling, for example. Openings 411 and 412 are formed in the first inner cover 410. The opening 411 is slightly larger than the second LED substrate 320 and the second inner cover 420 and surrounds them in a plan view. The opening 412 overlaps with the opening 311 of the first LED substrate 310 and is provided to expose the remote control receiver 620.

  The second inner cover 420 covers the plurality of second LED modules 520 and the plurality of second LED substrates 320, and is made of a transparent resin in the present embodiment. The second inner cover 420 is for preventing the second LED module 520 from being accidentally touched when the LED lighting apparatus 101 is installed on the ceiling, for example.

  In the present embodiment, as shown in FIG. 4, the first LED substrate 310 and the second LED substrate 320 are arranged at the same position in the thickness direction. Accordingly, the plurality of first LED modules 510 and the plurality of second LED modules 520 have the same position in the thickness direction of the first LED substrate 310 and the second LED substrate 320.

  As shown in FIGS. 4 and 6, the LED lighting apparatus 101 includes a hinge 250. The hinge 250 corresponds to an example of an opening / closing mechanism referred to in the present invention, and causes the second LED substrate 320 to take the closed state shown in FIGS. 3 and 4 and the open state shown in FIGS. 5 and 6. In the present embodiment, as shown in FIGS. 4 and 6, the second LED substrate 320 is supported by the second inner cover 420. The second inner cover 420 has a flat plate part 421, a hinge part 422, and a hook part 423. As shown in FIG. 1, the flat plate portion 421 is a rectangular plate-like portion, and has a shape and a size that substantially overlap with the second LED substrate 320. The hinge part 422 is a partial element constituting the hinge 250, and is a cylindrical part through which the shaft constituting the hinge 250 is inserted. The hinge 250 is configured by the hinge portion 422 of the second inner cover 420, the shaft, and a part of the first inner cover 410. The hook part 423 is a part that can be engaged with a part of the first inner cover 410, and is for keeping the second LED substrate 320 and the second inner cover 420 closed. 1 to 4 show the LED lighting apparatus 101 in which the second LED substrate 320 and the second inner cover 420 are in a closed state. As shown in FIGS. 5 and 6, when the second LED substrate 320 and the second inner cover 420 are opened, the outer cover 710 needs to be removed. The second LED substrate 320 and the second inner cover 420 that are in the open state may interfere with the outer cover 710.

  The power supply unit 610 is connected to the installation component 820 by a cable (not shown), and turns on the plurality of first LED chips 511 and the plurality of second LED chips 521 with, for example, commercial 100V AC power from the power supply outlet 810 on the ceiling 890. The function to convert to DC power suitable for The power supply unit 610 performs lighting on / off control according to a signal from the remote control receiving unit 620. The remote control receiving unit 620 sends a signal for instructing turning on and off to the power supply unit 610 by receiving, for example, infrared rays emitted from a remote control transmitter (not shown). Further, remote control receiving unit 620 may send a signal for adjusting these to power supply unit 610 by receiving an infrared signal for adjusting the ratio of daylight color to light bulb color and light emission luminance.

  The outer cover 710 has a size and a shape that substantially overlap with the top plate portion 200, and in the present embodiment, has a circular shape. The outer cover 710 is formed of, for example, a translucent milky white resin, and allows light from the plurality of first LED modules 510 and the plurality of second LED modules 520 to pass through while diffusing. In the present embodiment, a decorative ring 720 is attached to the top plate 200 so as to surround the outer cover 710. The decoration ring 720 is made of transparent resin, translucent resin, metal, or the like.

  Next, the operation of the LED lighting apparatus 101 will be described.

  According to the present embodiment, by opening the second LED board 320, a space located closer to the ceiling 890 than the second LED board 320 can be accessed. On the other hand, the LED lighting fixture 101 whole can be light-emitted by making the 2nd LED board | substrate 320 into a closed state. This also enables uniform irradiation without separating the outer cover 710 from the first LED module 510 and the second LED module 520. For this reason, the outer cover 710 can be formed in a thin shape close to the first LED module 510 and the second LED module 520. Therefore, it is possible to irradiate light more uniformly while reducing the thickness of the LED lighting apparatus 101.

  By setting the installation component 820 in a space located on the ceiling 890 side with respect to the second LED substrate 320, the second LED substrate 320 is opened when the LED lighting fixture 101 is attached to the ceiling 890. Thus, the installation component 820 can be easily accessed.

  By adopting a configuration in which the second LED substrate 320 is flush with the first LED substrate 310 when the second LED substrate 320 is in the closed state, the entire LED lighting apparatus 101 can emit light more uniformly. The plurality of second LED modules 520 can be protected by the second inner cover 420. By configuring the hinge 250 with the hinge portion 422 that is a part of the second inner cover 420, the second LED substrate 320 can be positioned more toward the ceiling 890 in the closed state. For this reason, the LED lighting apparatus 101 can be thinned by bringing the first LED substrate 310 and the second LED substrate 320 that are flush with each other closer to the ceiling 890. By configuring the hinge 250 by a part of the first inner cover 410, the first inner cover 410 and the second inner cover 420 can be in a flush relationship.

  By arranging the plurality of first LED modules 510 and the plurality of second LED modules 520 in a matrix, the plurality of first LED modules 510 and the plurality of second LED modules 520 are biased on both the outer edge side and the center side of the LED lighting apparatus 101. And can be arranged more uniformly. This is suitable for causing the LED lighting apparatus 101 to emit light uniformly. Further, when the daylight color, the light bulb color, and an intermediate color thereof are emitted by arranging the ones emitting a daylight color and the ones emitting a light bulb color in a zigzag manner for the plurality of first LED modules 510 and the plurality of second LED modules 520 In any case, the LED lighting apparatus 101 can be illuminated uniformly.

  9 and 10 show an LED lighting apparatus according to the second embodiment of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment. For convenience of understanding, the outer cover 710 is omitted in FIG. 9, and the outer cover 710, the first inner cover 410, and the second inner cover 420 are omitted in FIG.

  In the LED lighting apparatus 102 shown in FIGS. 9 and 10, a plurality of first LED modules 510 and a plurality of second LED modules 520 are arranged concentrically. Also in the present embodiment, the plurality of first LED modules 510 and the plurality of second LED modules 520 are arranged in a zigzag pattern that emits daylight color and light bulb color.

  The second LED substrate 320 and the second inner cover 420 are circular. Each of the plurality of first LED substrates 310 has an arc shape. The flat plate portion 421 of the second inner cover 420 has a circular shape. A hinge portion 422 is formed at one radial end of the flat plate portion 421, and a hook portion 423 is formed at the other radial end.

  Also in such an embodiment, light can be irradiated more uniformly while reducing the thickness of the LED lighting apparatus 102.

  The LED lighting apparatus according to the present invention is not limited to the embodiment described above. The specific configuration of each part of the LED lighting apparatus according to the present invention can be varied in design in various ways.

101, 102 LED lighting apparatus 200 Top plate 210 Locking part 250 Hinge (opening / closing mechanism)
310 First LED board 311 Opening 320 Second LED board 410 First inner cover 411, 412 Opening 420 Second inner cover 421 Flat plate part 422 Hinge part 423 Hook part 510 First LED module 520 Second LED module 511 First LED chip 521 Second LED chip 610 Power source 620 Remote control receiver 710 External cover 720 Decorative ring 810 Power outlet 820 Installation component 890 Ceiling

Claims (19)

A first LED substrate facing the irradiation side which is one side in the first direction;
A plurality of first LED chips mounted on the first LED substrate;
A second LED substrate surrounded by the first LED substrate in the first direction view and facing the irradiation side in the first direction ;
A plurality of second LED chips mounted on the second LED substrate;
An outer cover that is located on the irradiation side with respect to the plurality of first and second LED chips, and that diffuses and transmits light from the plurality of first and second LED chips;
An opening / closing mechanism for causing the second LED substrate to take a closed state facing the irradiation side and an open state exposing a space located on the installation side opposite to the irradiation side in the first direction in the closed state ; ,
A second inner cover that covers the plurality of second LED chips from the irradiation side and takes the closed state and the open state together with the second LED substrate ;
A part of the second inner cover constitutes the opening / closing mechanism, and the second inner cover is provided on the irradiation side in the first direction of the second LED substrate when the second inner cover is in a closed state. An LED luminaire characterized by that.   The LED lighting apparatus according to claim 1, wherein an installation component for fixing to a power supply outlet provided on a ceiling is accommodated in the space located on the installation side.   The LED lighting fixture according to claim 1 or 2, wherein the second LED substrate is flush with the first LED substrate in the closed state. The LED lighting apparatus according to claim 1, wherein the second inner cover is transparent. The LED lighting apparatus according to claim 1, wherein the opening / closing mechanism is a hinge. The plurality of the first 1LED chip comprising a first inner cover covering from the irradiation side, LED lighting device according to any of claims 1 to 5. The LED lighting apparatus according to claim 6 , wherein the first inner cover is transparent. The LED lighting apparatus according to claim 6 or 7 , wherein a part of the first inner cover constitutes the opening / closing mechanism. The LED lighting fixture according to any one of claims 6 to 8 , wherein the second inner cover is flush with the first inner cover in the closed state. The outer cover is detachable,
It said first 2LED substrate may be contacted with the outer cover is a mounted state in the opened state, LED lighting device according to any of claims 1 to 9. It said plurality of first and second 2LED chip is arranged on a concentric circle, LED lighting device according to any of claims 1 to 10. The LED lighting apparatus according to claim 1, wherein the second LED substrate is circular. The LED lighting device according to claim 1, wherein the first LED substrate includes an arc shape. It said plurality of first and second 2LED chips are arranged in a matrix, LED lighting device according to any of claims 1 to 10. The LED lighting fixture according to claim 14 , wherein the second LED substrate has a rectangular shape. The LED lighting fixture according to claim 14 or 15 , wherein the first LED substrate includes a rectangular one. A plurality of first 1LED module each include a plurality of first 1LED chip to each other, each of which comprises a plurality of first 2LED module including a plurality of first 2LED chip to each other, one of the claims 1 to 16 LED lighting fixture according to any one of the above. The LED lighting apparatus according to claim 17 , wherein the plurality of first and second LED modules include ones that emit different wavelengths, and those that emit light having different wavelengths are arranged in a staggered manner. The LED lighting apparatus according to claim 18 , wherein one of the lights having different wavelengths is a daylight color and the other is a light bulb color.

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