JP7539719B2 - Lighting equipment - Google Patents

Description

The present invention relates to a lighting device.

Various ceiling-mounted lighting devices (ceiling lights) have been proposed that use LEDs (Light Emitting Diodes) as light sources, which have the advantages of low power consumption and long life (Patent Document 1).

JP 2013-48167 A

However, due to recent housing conditions, there is a demand for thin lighting devices that are easy to install on ceilings and walls.

Therefore, the present invention aims to provide a lighting device that can be made thin and easy to install.

In order to achieve the above object, the lighting device of the present invention comprises:
The lighting device has a main body, a power supply unit, and a connecting member.
The illumination device body includes a substrate serving as a light source unit, an LED mounted on the substrate, and a plate-shaped light source unit mounting base on which the substrate is mounted;
The power supply unit includes a power supply device and a plate-shaped power supply device mounting base on which the power supply device is mounted.
The plate-shaped light source unit mounting base and the plate-shaped power supply unit mounting base are connected at a fixed interval by the connecting member.

The lighting device of the present invention can be made thin and is easy to install.

FIG. 1(A) is a plan view and a side view of an illumination device according to one example (embodiment 1) of the present invention, FIG. 1(B) is a cross-sectional view taken along the II-II direction of the plan view of FIG. 1(A), and FIG. 1(C) is a cross-sectional view taken along the II-II direction of the plan view of FIG. FIG. 2 is an exploded perspective view of a lighting device according to one example (embodiment 1) of the present invention. FIG. 3 is a partially cutaway plan view showing the internal structure of a lighting device according to one example (embodiment 1) of the present invention. FIG. 4 is a side view showing a state in which the lighting device according to one example (embodiment 1) of the present invention is attached to a ceiling. FIG. 5A is a perspective view of an illumination device according to another example (embodiment 2) of the present invention, and FIG. 5B is a side view showing the illumination device of FIG. 5A attached to a ceiling. FIG. 6A is a perspective view of a lighting device according to still another example (third embodiment) of the present invention, and FIG. 6B is a side view showing the lighting device of FIG. 6A attached to a ceiling. FIG. 7 is a perspective view for explaining details of fixing and releasing the lighting device by the release switch according to one example (embodiment 1) of the present invention.

As a first aspect of the lighting device of the present invention, for example, the connection terminal may be connectable to the wiring device in an engaged state. If the connection terminal can be joined to the wiring device in an engaged state, it can be firmly attached to a ceiling, for example.

As a second aspect of the lighting device of the present invention, for example, at least a part of the lighting device mounting part side of the lighting device main body may be planar, at least a part of the power supply part side of the lighting device mounting part may be planar, and the plane of the lighting device main body on the lighting device mounting part side and the plane of the power supply part on the lighting device mounting part side may be arranged in a positional relationship that is approximately on the same plane. In this aspect, the lighting device of the present invention has a flat shape relative to the mounting part (e.g., a ceiling), and is further thin. Note that in this aspect, it is preferable that the entire surface of the lighting device main body and the power supply part on the mounting part side is flat.

As a third aspect of the lighting device of the present invention, for example, the lighting device main body may have a light source unit mounting base on which the light source unit is mounted, the light source is mounted on the side of the light source unit mounting base opposite the lighting device mounting portion side, the power supply unit may have a power supply unit mounting base on which the power supply unit is mounted, the power supply unit is mounted on the lighting device mounting portion side of the power supply unit mounting base, and the light source unit mounting base and the power supply unit mounting base may be connected by the connecting member.

In a third aspect, the light source mounting base, the power supply unit mounting base, and the connecting member may be a single member in which the three are integrally molded. This aspect reduces the number of parts, reduces costs, and improves manufacturing efficiency. In this aspect, the light source mounting base, the power supply unit mounting base, and the connecting member may be made of, for example, metal or resin, with resin being preferred in terms of weight reduction, processability, and cost.

In the third aspect, for example, the shape of the light source unit mounting base may be annular, the power supply unit mounting base may be disposed in the center of the hollow portion of the annular shape, and the inner periphery of the light source unit mounting base and the outer periphery of the power supply unit mounting base may be connected by the connecting member. In this manner, the lighting device of the present invention can be made in a variety of sizes, from small diameter to large diameter.

In a third aspect, the connecting member may be an arm that curves in a sigmoid shape from the center of the hollow portion of the annular shape in the radial direction. In this aspect, the lower side of the power supply unit and the upper side of the lighting device main body are connected, making the entire lighting device flat and even thinner.

In a fourth aspect of the lighting device of the present invention, the power supply unit may have a power supply cover that covers the power supply unit, the power supply unit mounted on the power supply unit mounting base is covered by the power supply cover, and the tip of the connection terminal may protrude from the power supply cover. According to this aspect, the power supply unit is covered by the power supply cover, which provides excellent safety and prevents damage and failure of the power supply unit.

As a fifth aspect of the lighting device of the present invention, for example, the connection terminal can be fixed in an engaged state to the wiring device, and further includes a release switch that can release the fixed state of the connection terminal that is fixed in an engaged state, and the release switch can be disposed outside the power supply device cover. If the connection terminal can be fixed in an engaged state to the wiring device, it can be firmly attached to, for example, a ceiling, and if the fixation can be released by the release switch, replacement can be facilitated.

As a sixth aspect of the lighting device of the present invention, for example, the connecting members may be multiple, at least one of the multiple connecting members has a conductive wire therein, and the power supply device and the light source are electrically connected by the conductive wire, the connecting member having the conductive wire therein has a connecting member body and a lid body having a groove therein, the conductive wire is disposed in the groove of the connecting member body, the groove can be closed by the lid body, and the lid body may be integrated with the power supply device cover. According to this aspect, the structure is further simplified and the number of parts is reduced, which improves manufacturing efficiency and reduces manufacturing costs.

In the sixth aspect, for example, the power supply cover and the lid body may be a single member in which the two are integrally molded. According to this aspect, the number of parts can be further reduced.

As a seventh aspect of the lighting device of the present invention, for example, the light source unit may have a substrate and a light-emitting element, and the light-emitting element may be mounted on the substrate. Examples of the light-emitting element include an LED and an organic EL (Electro Luminescence).

As an eighth aspect of the lighting device of the present invention, the lighting device body may have a light diffusion cover, and the light source unit may be covered by the light diffusion cover. According to this aspect, for example, if the light source unit uses an LED, the linear light of the LED can be diffused to widen the range of illumination.

Next, an embodiment of the present invention will be described with reference to Figs. 1 to 7. The present invention is not limited or restricted by the following embodiment. Note that the same parts in Figs. 1 to 7 are denoted by the same reference numerals. The explanations in each embodiment can be used interchangeably.

(Embodiment 1)
As shown in Figs. 1 to 3, the lighting device 1 of the present embodiment has a lighting device main body 11, a power supply unit 13, and a connecting member 14. The lighting device main body 11 is composed of a board 113 serving as a light source unit, an LED 114 mounted on the board 113, a light source unit mounting base 111 on which the board 113 is mounted, and a light diffusion cover 112 covering the side of the board 113 on which the LED 114 is mounted. The light source unit mounting base 111 is, for example, plate-shaped. The power supply unit 13 has a power supply unit 132, a power supply unit mounting base 133 on which the power supply unit 132 is mounted, a power supply unit cover 131 that covers the power supply unit 132, and a connection terminal 1321. The power supply unit mounting base 133 is, for example, plate-shaped. The connection terminal 1321 is electrically connected to the power supply unit 132 and supplies the current supplied from a wiring device (such as a ceiling or rosette) on an attachment part such as a ceiling to the power supply unit 132. The power supply cover 131 is also provided with a release switch 134 .

The light source mounting base 111 is a circular plate, and has a circular board 113 mounted on the surface opposite the mounting part such as a ceiling. A plurality of LEDs 114 are mounted on the surface of the board 113 opposite the mounting part, and the surface of the circular board 113 on which the LEDs 114 are mounted is covered with a circular light diffusing cover 112.

The power supply unit mounting base 133 is, for example, in the shape of a circular plate, and the power supply unit 132 is mounted on the surface of the power supply unit mounting base 133 facing the mounting portion, such as the ceiling. The power supply unit 132 converts AC current supplied from the connection terminal 1321 into DC current and supplies it to the LED 114. The power supply unit 132 is covered by a cylindrical power supply unit cover 131 that is open downward and has a ceiling portion above. The tip of the connection terminal 1321 is inverted L-shaped and protrudes from the ceiling portion of the power supply unit cover 131.

The connecting member 14 is a rectangular plate (arm) with walls extending in the longitudinal direction at both ends in the width direction (direction perpendicular to the longitudinal direction) and flat grooves formed therein.

In this embodiment, as shown in Figures 1 to 3, the power supply unit mounting base 133 is disposed in the hollow center of the circular light source unit mounting base 111, and three connecting members 14 are arranged at equal intervals to connect the power supply unit mounting base 133 and the light source unit mounting base 111, and the power supply unit mounting base 133, the three connecting members 14, and the light source unit mounting base 111 are an integrally formed single component. In addition, the connecting members 14 are curved in a sigmoid shape radially from the center of the hollow portion of the circular light source unit mounting base 111.

A conductive wire (not shown) is placed in the groove of one of the three connecting members 14, and the conductive wire supplies direct current converted by the power supply device 132 to the LEDs 114. The groove of the connecting member 14 in which the conductive wire is placed is closed by a cover body (rectangular plate-like, sigmoidal shape) 15 placed at the bottom of the cylindrical side wall of the power supply device cover 131, so that the conductive wire is not exposed to the outside.

4 shows the lighting device 1 of this embodiment attached to the ceiling C. As shown in the figure, the inverted L-shaped tip of the connection terminal 1321 protruding from the ceiling part of the power supply device cover 131 is inserted into the socket of the wiring device 20 (ceiling or rosette, etc.) arranged on the ceiling C, and the entire lighting device 1 is rotated, so that the connection terminal 1321 is electrically connected and fixed in an engaged state with the wiring device 20. Note that in this embodiment, the tip of the connection terminal 1321 is inverted L-shaped and can be engaged with the wiring device 20, but the present invention is not limited to this. For example, the tip of the connection terminal 1321 is linear and can be inserted into the wiring device 20, while the lighting device 1 may be fixed to the ceiling C, etc., by attaching and fixing the power supply unit 13 or the lighting device main body 11 to a mounting part of the ceiling C, etc., with a fixing member such as a screw. When removing the lighting device 1 of this embodiment, the release switch 134 provided on the side wall of the power supply cover 131 is pressed to release the fixed state, and the entire lighting device 1 is rotated to pull out the tip of the connection terminal 1321 from the socket of the wiring device 20, so that the lighting device 1 can be removed from the ceiling C. Details of the fixing and the release of the lighting device 1 by the release switch 134 in this embodiment will be described with an example. As shown in FIG. 7, in this example, the power supply unit 13 has a claw portion 1322 that retracts into the power supply cover 131 by pressing the release switch 134. The claw portion 1322 is inclined with respect to the rotation direction when the lighting device 1 is attached to the ceiling C, so that the lighting device 1 can be attached to the ceiling C without pressing the release switch 134. The claw portion 1322 is fitted into a recess provided in the wiring device 20, thereby completing the fixing. When removing the lighting device 1 from the ceiling C, the release switch 134 is pressed to retract the claw portion 1322 into the power supply device cover 131 to release the fixation, and the entire lighting device 1 is rotated in the opposite direction to that when it was attached to release the engagement state with the wiring fixture 20, and the lighting device 1 can be removed from the ceiling C. Note that, although an example in which the claw portion 1322 retracts into the power supply device cover 131 by pressing the release switch 134 is shown in FIG. 2 and FIG. 7, the present invention is not limited to this example, and the claw portion 1322 may be retracted into the power supply device cover 131 by sliding the release switch 134.

In the lighting device 1 of this embodiment, the entire surface of the ceiling part of the power supply cover 131 is flat, the entire surface of the ceiling side of the light source unit mounting base 111 is flat, and the ceiling part of the power supply cover 131 and the ceiling side surface of the light source unit mounting base 111 are in the same position. In addition, the position of the power supply unit mounting base 133 is at a position that is approximately the same height as or lower than the height of the side opposite the ceiling of the light diffusion cover 112. In this manner, as shown in FIG. 4, the lighting fixture 1 of this embodiment is flat against the surface of the ceiling C and has a thin shape, improving its appearance.

In this embodiment, there are three connecting members 14, but the present invention is not limited to this and can take various forms, such as one, two, four, or five connecting members.

In this embodiment, the power supply unit mounting base 133, the connecting member 14, the light source unit mounting base 111, the power supply unit cover 131, and the lid body 15 are made of resin, which reduces the weight. The resin used as the forming material in the present invention is not particularly limited, and examples include PC (polycarbonate), PBT (polybutylene terephthalate), PP (polypropylene), etc.

As described above, the light source unit is a circular substrate 113 on which a plurality of light emitting elements 114 (e.g., LEDs) are arranged. The substrate may be a circular substrate formed by connecting a plurality of substrates. The substrate may be, for example, a flat plate made of glass epoxy resin (FR-4), which is an insulating material, with a wiring pattern formed on the surface side by silver foil. A white resist layer acting as a reflective layer may be applied on the wiring pattern, i.e., on the surface of the substrate. In addition, in addition to the glass epoxy resin (FR-4), ceramic materials, synthetic resin materials, etc. can be applied as the material of the substrate when the substrate is an insulating material. In addition, when the substrate is made of metal, a base substrate in which an insulating layer is laminated on one surface of a base plate made of aluminum or the like having good thermal conductivity and excellent heat dissipation properties can be applied. The light emitting element may be, for example, a surface-mounted LED package. The LED package is mounted, for example, in a plurality of rows (three rows in this embodiment) in a substantially circular shape in the circumferential direction of the substrate. The LED packages may be arranged alternately with daylight white and bulb white, with adjacent light emitting elements in each row spaced at approximately equal intervals. The color can be adjusted by adjusting the current flowing through the daylight white and bulb white LED packages. The light emitting elements do not necessarily need to be mounted in multiple rows, and may be mounted in one row along the circumferential direction of the substrate. The number of rows and the number of light emitting elements can be set appropriately according to the desired output, for example. The LED package may be composed of an LED chip arranged on a base made of ceramics or synthetic resin, and a molding translucent resin such as epoxy resin or silicone resin that seals the LED chip. The LED chip is, for example, a blue LED chip that emits blue light. A phosphor is mixed into the translucent resin to enable the emission of daylight white or bulb white light. The LED may be mounted directly on the substrate as an LED chip, or may be mounted as a bullet-shaped LED, and the mounting method and format are not particularly limited.

As described above, the power supply device 132 supplies electricity to the light source unit (e.g., the LED on the board). The power supply device 132 includes a rectifier circuit that rectifies the current supplied from an external power source such as 100V AC, a transformer that converts the rectified voltage into a predetermined voltage, and a constant current supply circuit that supplies a constant current to the light source unit.

The light diffusion cover 112 is formed of a translucent material, but may be made milky white in whole or in part to provide light scattering functionality. There are no particular limitations on the material of the light diffusion cover, and examples of the material include resins such as acrylics such as PMMA (polymethylmethacrylate), PC (polycarbonate), and PS (polystyrene).

(Embodiment 2)
As shown in Fig. 5(A), the lighting device 1 of this embodiment is similar to the lighting device 1 of embodiment 1, except that the connecting member 14 is an arm that is inclined radially from the center of the hollow part of the circular light source unit mounting base 111 toward the ceiling C so that the lighting device 1 can be mounted closer to the ceiling C. Fig. 5(B) shows the lighting device 1 of this embodiment mounted on the ceiling C. As shown in the figure, according to this embodiment, the lighting device 1 can be mounted closer to the ceiling C.

(Embodiment 3)
As shown in Fig. 6(A), the lighting device 1 of this embodiment is similar to the lighting device 1 of the first embodiment, except that the connecting member 14 is an arm that is inclined radially from the center of the hollow part of the circular light source unit mounting base 111 in the opposite direction to the ceiling C so that the lighting device 1 can be attached away from the ceiling C. Fig. 6(B) shows the lighting device 1 of this embodiment attached to the ceiling C. As shown in the figure, according to this embodiment, it is possible to move the lighting device 1 away from the ceiling C, so that, for example, heat generated by the LEDs can be more easily dissipated.

The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. The configuration and details of the present invention can be modified in various ways that are understandable to those skilled in the art and are within the scope of the present invention.

The present invention provides a new, thin lighting device. Therefore, the present invention can be used, for example, even in a small room without creating a feeling of oppression. Furthermore, the present invention can be used for lighting purposes not limited to living rooms, but also for storage rooms, toilets, etc.

Reference Signs List 1: Illumination device 11: Illumination device main body 13: Power supply unit 14: Connection member 15: Lid 20: Wiring device 111: Light source unit mounting base 112: Light diffusion cover 113: Substrate 114: Light emitting element (LED)
131 Power supply unit cover 132 Power supply unit 133 Power supply unit mounting base 134 Release switch 1321 Connection terminal 1322 Claw portion

Claims (6)

A lighting device in which a flat surface of a ceiling or wall of a house is used as a lighting device mounting portion,
The lighting device has a main body, a power supply unit, and a connecting member.
The lighting device body includes a substrate serving as a light source unit, an LED mounted on the substrate, a plate-shaped light source unit mounting base on which the substrate is mounted, and a light diffusion cover that covers the light source unit,
the power supply unit includes a power supply device and a plate-shaped power supply device mounting base for mounting the power supply device on a surface of the lighting device mounting unit side;
the plate-shaped light source unit mounting base and the plate-shaped power supply unit mounting base are each installed parallel to the plane of the lighting device mounting portion and connected at a certain interval by the connecting member,
A lighting device characterized in that the position of the plate-shaped power supply mounting base and the highest position of the light diffusion cover in terms of vertical height relative to the plane of the lighting device mounting part on the side opposite the lighting device mounting part are approximately the same when the plane of the lighting device mounting part is used as a reference . 2. The lighting device according to claim 1, wherein the light source unit mounting base, the power supply unit mounting base and the connecting member are integrally formed as a single member. the power supply unit has a power supply device cover that covers the power supply device,
3. The lighting device according to claim 1, wherein the power supply device mounted on the power supply device mounting base is covered with a power supply device cover. The light source mounting base has an annular shape,
The power supply device mounting base is disposed in a center portion of the annular hollow portion,
3. The lighting device according to claim 1, wherein an inner periphery of the light source unit mounting base and an outer periphery of the power supply unit mounting base are connected by the connecting member. 5. The lighting device according to claim 4, wherein the connecting member is an arm inclined radially from the center of the annular hollow portion toward the lighting device mounting portion. The lighting device according to claim 5 , wherein the connecting member is an arm curved in a sigmoid shape radially from the center of the hollow portion of the annular shape.

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