JP7079959B2 - Lighting equipment and light diffusion cover used for it - Google Patents

Description

The present invention relates to a luminaire and a light diffusion cover used therein.

Focusing on the power saving and long life of LEDs (Light Emitting Diodes), a plurality of lighting fixtures using LEDs have been proposed. For example, Patent Document 1 discloses a thin lighting fixture including a light source, a power supply unit for supplying electric power to the light source, and a holding body for holding the light source and the power supply unit.

JP-A-2017-117809

The lighting fixture of Patent Document 1 is intended to reduce the thickness of the lighting fixture. An LED substrate is attached to the main body, and a plurality of LED elements of the LED mounting substrate are covered with a diffuser lens for each LED element. , The linear light of the LED is designed to be scattered light. However, in the aspect of the lighting fixture of Patent Document 1, there is a drawback that the configuration of the lighting fixture becomes complicated because the processing for mounting the LED mounting substrate on the main body is required and each LED element is covered with a diffusion lens. ..

Therefore, an object of the present invention is to provide a lighting fixture having a simplified configuration and a light diffusion cover used for the lighting fixture.

In order to achieve the above object, the luminaire of the present invention is
It has a main body, a power supply, a light source, a fixture, and a light diffusion cover.
The power supply device, the light source, and the fixture are provided on the light emitting surface side of the main body.
The power supply device can be connected to an external power supply and can be connected to an external power supply.
The light source has a light emitting element mounted on a substrate and has a light emitting element.
The power supply and the light source are electrically connectable and can be electrically connected.
At least a portion of the light source is held by the holding portion of the fixture.
A housing convex portion is formed so as to project from the inside to the outside of the light diffusion cover.
A portion protruding outward from the outer peripheral portion of the light source is accommodated in the accommodating convex portion, and the light source is covered by the light diffusion cover.

Further, the light diffusion cover of the present invention is used for the lighting equipment of the present invention.
At least a portion projecting to the outside of the outer peripheral portion of the light source can be accommodated in the accommodating convex portion formed on the inner surface protruding from the inside to the outside of the light diffusion cover.

According to the present invention, by adopting the fixture, it is possible to obtain a lighting fixture having a simple structure.

FIG. 1A is an exploded perspective view of the lighting fixture of the first embodiment, and FIG. 1B is a diagram showing a state in which the lighting fixture is attached to the ceiling. FIG. 2A is a perspective view of the fixture of the first embodiment, and FIG. 2B is a top view of the fixture. FIG. 3A is a perspective view of the lighting fixture of the third embodiment, and FIG. 3B is a cross-sectional view of the lighting fixture. 4 (A) and 4 (B) are enlarged cross-sectional views of the lighting fixture of the first embodiment. FIG. 5 is a perspective view showing a state in which another light diffusing member is used in the first embodiment.

Next, an embodiment of the present invention will be described. The present invention is not limited to the following embodiments. In each of the following figures, the same parts are designated by the same reference numerals. Further, the explanations of the respective embodiments can be referred to each other's explanations unless otherwise specified. Further, the configurations of the embodiments can be combined unless otherwise specified. Further, the lighting fixture and the light diffusion cover of the present invention are applied to various lighting fixtures such as a street light, as well as a ceiling light of a type attached to an adapter arranged on the ceiling and a pendant of a type suspended from the ceiling. be able to.

FIG. 1A is an exploded perspective view of a lighting fixture according to an embodiment of the present invention. As shown in the figure, the lighting fixture of the embodiment is composed of a main body 4, a power supply device 5, a light source 2, a fixture 1, a light diffusion cover 6, and a cover member 3. The light source 2 has a plurality of light emitting elements (for example, LEDs) arranged on a substantially quadrangular substrate having a circular opening formed in the center. The entire substrate may be formed into a substantially quadrangle by connecting a plurality of substrates. As the substrate, for example, a substrate made of a flat plate of glass epoxy resin (FR-4) as an insulating material and having a wiring pattern formed by silver foil on the surface side can be used. Further, a white resist layer acting as a reflective layer may be applied on the wiring pattern, that is, on the surface of the substrate. When the substrate is used as an insulating material, a ceramic material, a synthetic resin material, or the like can be applied in addition to the glass epoxy resin (FR-4). Further, when the substrate is made of metal, a base substrate or the like 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 may be, for example, a surface mount type LED package. The LED package is mounted, for example, in a plurality of rows (three rows in this embodiment) in a substantially circumferential shape in the circumferential direction of the substrate. Further, the LED package may have a neutral white color and a light bulb color, and these may be arranged alternately, and adjacent light emitting elements in each row may be arranged at substantially equal intervals. Color matching is possible by adjusting the current flowing through the neutral white and light bulb color LED packages. The light emitting elements do not necessarily have to be mounted in a plurality of rows, and may be mounted in one row along the circumferential direction of the substrate, for example. The number and number of rows of the light emitting elements can be appropriately set according to, for example, a desired output or the like. The LED package is composed of, for example, an LED chip arranged on a base 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. May be. The LED chip is, for example, a blue LED chip that emits blue light. A phosphor is mixed in the translucent resin so as to be able to emit light having a neutral white color or a light bulb color. As the LED, the LED chip may be mounted directly on the substrate, or a bullet-shaped LED may be mounted, and the mounting method and format are not particularly limited. In the lighting fixture of the embodiment, the power supply device 5, the light source 2, the fixture 1, the light diffusion cover 6, and the cover member 3 are arranged on the light emitting surface side of the main body 4. The power supply device 5 is installed in a recess formed on the light emitting surface side of the main body 4 and can be connected to an external power supply. Further, the power supply device 5 and the light source 2 are electrically connected to supply electricity from an external power source to the light source (for example, an LED on the substrate). The power supply device 5 includes, for example, a rectifier circuit that rectifies a current supplied from an external power source such as AC 100V, a transformer that converts the rectified voltage into a predetermined voltage, a constant current supply circuit that supplies a constant current to the light source 2, and the like. To prepare for. The light diffusion cover 6 is arranged so as to cover the light irradiation surface of the substrate of the light source 2. The substantially circular cover member 3 has a cover main body 32, and a plurality of substantially L-shaped inner convex portions extending inward are provided inside the end portions of the cover main body 32 in the circumferential direction. There is. A part of the substrate of the light source 2 is held (mounted) by the holding portion of the mounting tool 1, and the inner convex portion of the cover member 3 is engaged with the engaging portion of the mounting tool 1.

The main body 4 is a member also referred to as a "chassis", which is formed into a circular shape from a flat plate of a metal material such as a cold-rolled steel plate and has a circular opening formed in the center. The main body 4 can be attached with an adapter for attaching a lighting fixture to the ceiling, for example. As the adapter, for example, a conventionally known one can be used. An example of such an adapter is one that has a flat cylindrical shape and has a hooking blade at one end that engages with the hooking blade engagement hole of an existing hooking ceiling body located on the ceiling of a building. Be done. Further, the adapter may have a connector connected to the power supply device 5. The hook sealing body and the adapter are electrically and mechanically joined by engaging the hook blade engaging hole and the hook blade. If an adapter is used, it is possible to attach a lighting fixture by reducing the gap with the ceiling. FIG. 1B shows a state in which the lighting fixture of the present embodiment is attached to the ceiling 7.

The light diffusion cover 6 covers the light source 2, and for example, diffuses linear light such as an LED so that light can be irradiated in all directions. The light diffusion cover 6 is formed of, for example, a milky white resin. Examples of the resin include polycarbonate (PC), acrylic such as PMMA (polymethylmethacrylate), PS (polystyrene) and the like.

The light diffusion cover 6 has four accommodating convex portions 61 protruding from the inside to the outside. Then, each corner portion (the portion protruding outward) of the substantially quadrangular substrate of the light source 2 is accommodated in each accommodating convex portion 61.

In FIG. 1A, the power supply device 5 is arranged below the light source 2 in a recess formed in the main body 1 and is covered with a light diffusion cover 6. According to this aspect, even when the cover member 3 is removed, the light diffusion cover 6 does not expose the power supply device 5 to the outside, and it is possible to prevent electric shock due to contact with fingers or the like, which is safe. It is possible to provide lighting equipment with excellent properties.

2 (A) and 2 (B) show an example of the fixture 1. The fixture 1 shown in FIG. 6A has a holding portion 11 and an engaging portion 12. The holding portion 11 is formed of a plate-shaped member, and can hold at least a part of a light source (for example, a light emitting element mounting substrate) on the upper surface of the plate-shaped member in the figure. The plate-shaped holding portion 11 is connected to the plate-shaped support member 14 in an inverted L shape at the left end portion in the figure. The engaging portion 12 includes a plate-shaped ceiling portion 121 and a plate-shaped side wall portion 122, which are connected in an inverted L shape. Further, a storage space 123 is formed between the plate-shaped ceiling portion 121 and the plate-shaped side wall portion 122. Further, in order to securely fix the cover member 3 to the fixture 1, a protrusion 120 may be provided on the lower surface of the ceiling portion 121 of the fixture 1. The support member 14 and the side wall portion 122 are connected to the plate-shaped connecting member 13 at the lower end portion in the figure. The coupling member 13 may function as a fixing portion for fixing the fixture 1 to the main body of the luminaire, but is not limited to this, and may be coupled to the main body of the luminaire other than the coupling member 13.

As shown in FIGS. 2A and 2B, a convex guide portion formed on the light irradiation surface side of the plate-shaped holding portion 11 so as to project in the light irradiation direction and extend in a straight line bent in the middle. 111 is formed. When the light source is mounted on the light irradiation surface side of the plate-shaped holding portion 11, the convex guide portion 111 can guide the mounting position of a part of the light source by the side wall of the convex guide portion 111.

In the present invention, the material of the fixture may be, for example, metal or resin. Examples of such metal materials include colored steel sheets, galvanized steel sheets, stainless steel sheets for springs, and the like, and examples of resin materials include PP (polypropylene), PBT (polybutylene terephthalate), and the like. ..

In the present invention, the light source is not particularly limited, and includes, for example, one in which a light emitting element is mounted on the light irradiation surface of the substrate. Examples of the light emitting element include LEDs and organic EL (Organic Electro-Luminescence).

In the present invention, the cover member is also referred to as a "glove" and covers the light irradiation surface of the luminaire. Although the cover member is made of a translucent material, for example, the cover member may be entirely or partially milky white to impart a light scattering function. The material of the cover member is not particularly limited, and for example, acrylic such as PMMA (polymethylmethacrylate) and resins such as PC (polycarbonate) and PS (polystyrene) can be used.

FIG. 3A is a diagram showing a state in which the light source 2 is covered with the light diffusion cover 6, and FIG. 3B is a cross-sectional view taken in the direction of XX'of FIG. 3A. be. Further, FIG. 4A is an enlarged cross-sectional view of portion X of FIG. 3B. As shown in FIGS. 3B and 4A, the inner convex portion 31 of the cover member 3 is accommodated in the accommodation space 123 of the engaging portion 12 of the attachment 1, and the cover member 3 is attached to the main body 4. Has been done. Further, as shown in FIGS. 3 (B) and 4 (A), the light source 2 is a substantially quadrangular substrate 21 on which a light emitting element 22 such as an LED is mounted, and the four corners of the substantially quadrangular substrate are mounted. It is held by the holding portion 11 of the fixture 1. Then, as shown in FIGS. 3B and 4A, the holding portion 11 of the fixture 1 and the corner portion of the substantially quadrangular substrate are accommodated in the accommodating convex portion 61 of the light diffusion cover 6.

In FIG. 4A, the engaging portion 12 of the fixture 1 is located on the outer peripheral side of the main body 4 in the radial direction with respect to the accommodating convex portion 61 of the light diffusion cover 6, but is engaged with the accommodating convex portion 61. The positional relationship with the joint portion 12 is not limited to this example. For example, by changing the shape of the mounting tool 1 so that the holding portion 11 and the engaging portion 12 of the mounting tool 1 are located at different positions in the circumferential direction of the main body 4, the accommodating convex portion 61 and the engaging portion are engaged. The positional relationship with 12 can be changed. Further, since the fixture 1 is in close contact with the light diffusion cover 6 and the cover member 3 without any gap, the light diffusion cover 6 for insects, dust, etc. from the outside can be easily configured without using a separate insect repellent member. , And the intrusion of the cover member 3 into the inside can be prevented. Further, the number and position of the inner convex portions 31 of the cover member 3 and the shape of the substrate 21 can be arbitrarily set. By forming the substrate 21 into a substantially quadrangular shape as shown in FIG. 1A and arranging the light emitting elements 22 on the substrate 21 in a well-balanced manner, a homogeneous and harmonious light distribution can be obtained.

FIG. 4B is a partial cross-sectional view of FIG. 3A as seen in the YY'direction, and is a diagram illustrating the configuration of a portion of the light diffusion cover 6 without the accommodating convex portion 61. As shown in FIG. 4B, in the light diffusion cover 6, the inclination of the cover of the portion without the accommodating convex portion 61 is gentler with respect to the light emitting surface of the main body 4 as compared with the portion having the accommodating convex portion 61. It has a gentle slope. Since the proportion of the accommodating convex portion 61 in the light diffusion cover 6 is small, the inclination of the entire light diffusion cover 6 with respect to the light emitting surface of the main body 4 can be made gentle (the inclination angle is reduced), thereby irradiating. It is possible to make the light a soft light distribution.

FIG. 5 is a diagram showing a state in which the inclination of the light diffusion cover 6 with respect to the light emitting surface of the main body 4 is increased with respect to the light diffusion cover 6 of FIG. 3 (A). As described above, in the present invention, the state of inclination of the light diffusion cover 6 with respect to the light irradiation surface of the main body 4 can be freely adjusted.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

According to the present invention, since the configuration of the lighting fixture can be simplified, for example, a ceiling light of a type attached to an adapter placed on the ceiling, a pendant of a type suspended from the ceiling, a street light, etc. It can be applied to various lighting fixtures.

1 Mounting tool 2 Light source 3 Cover member 4 Main body 5 Power supply device 6 Light diffusion cover 7 Ceiling 11 Holding part 12 Engaging part 13 Coupling member 14 Supporting member 21 Board 22 Light emitting element 31 Inner convex part 61 Accommodating convex part 111 Convex guide part 121 Ceiling 122 Side wall 123 Accommodation space

Claims (6)

It has a main body, a power supply device, a light source, a fixture, a light diffusion cover, and a cover member.
The power supply device, the light source, and the fixture are provided on the light emitting surface side of the main body.
The power supply device can be connected to an external power supply and can be connected to an external power supply.
The light source has a plurality of light emitting elements mounted on a substrate, and has a plurality of light emitting elements.
The power supply and the light source are electrically connectable and can be electrically connected.
At least a portion of the light source is held by the holding portion of the fixture.
A housing convex portion is formed so as to project from the inside to the outside of the light diffusion cover.
The accommodating convex portion accommodates a portion protruding outward from the outer peripheral portion of the light source, and the light source is covered with the light diffusion cover.
The cover member has an inward convex portion protruding inward thereof.
The fixture further has an engaging portion and has an engaging portion.
A lighting fixture characterized in that the engaging portion of the fixture engages with the inner convex portion that covers the front surface of the light diffusion cover in the light emission direction, and the cover member is attached to the main body. .. The portion protruding to the outside of the outer peripheral portion of the light source is held by the holding portion.
The luminaire according to claim 1, wherein the holding portion is housed in the housing convex portion. The substrate has a substantially quadrangular shape.
The luminaire according to claim 1 or 2, wherein the four corner portions of the substrate are held by the holding portion. The engaging portion has a side wall portion and a ceiling portion, and has a side wall portion and a ceiling portion.
A storage space is formed between the side wall portion and the ceiling portion.
Any of claims 1 to 3, wherein the cover member is attached to the main body by accommodating the inner convex portion in the accommodation space and engaging the ceiling portion with the inner convex portion. The lighting equipment described in item 1. The main body has a circular opening formed in the center.
The luminaire according to any one of claims 1 to 4, wherein an adapter that is electrically and mechanically joined to the hook ceiling body arranged on the ceiling is attached to the opening. The accommodating convex portion is formed on the inner surface protruding from the inside to the outside of the light diffusion cover.
The invention according to any one of claims 1 to 5, wherein the accommodating convex portion accommodates at least a portion projecting to the outside of the outer peripheral portion of the light source and a holding portion of the fixture . Light diffusion cover used for lighting equipment.

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