JP2014049350A - Lighting device - Google Patents

Abstract

Provided is a lighting device that is less likely to have locally bright or dark portions in a shade when the nightlight is turned on, and has a good appearance when the nightlight is turned on.
An instrument main body, a substrate, a plurality of LED elements arranged on the substrate, and a part of the plurality of LED elements are used as a nightlight. The light source unit 41 disposed in the instrument body 21, the shade 51 mounted on the instrument body 21, and the light source unit 41 is disposed between the instrument body 21 and the shade 51 so as to cover at least the night light. And a translucent protective cover 60 having a light diffusion portion 65 at a position corresponding to the LED element 42A.
[Selection] Figure 2

Description

  The present invention relates to a lighting fixture using an LED as a light source.

  Conventionally, lighting fixtures using light emitting diodes (LEDs) as main light sources are known. As an arrangement configuration of the main light source LEDs, for example, in a ceiling light (ceiling-mounted light), there are many cases where an LED lighting power supply device or the like is arranged in the center of the appliance and the main light source LEDs are arranged around the power source device. .

  Moreover, the lighting fixture which provided LED used as a nightlight (security light) is also known. As an arrangement configuration of the night light, there is a case where the LED used as the night light is arranged at the center position of the appliance away from the LED for the main light source. In this case, there is a problem that the structure of the luminaire becomes complicated and the cost increases, such as an LED used as a night light must be arranged avoiding the power supply device. Then, the lighting fixture which has arrange | positioned LED used as a nightlight in the same position as LED for main light sources is known (for example, refer patent document 1).

JP 2012-89281 A

  By the way, in order to ensure the light quantity required for the main light source and uniform light distribution with the LED as the point light source, the LED for the main light source has, for example, a large number of LED elements arranged on the substrate. For this reason, in the state where the LED for the main light source is turned on, a locally bright part or a dark shadow part hardly occurs in the shade.

  On the other hand, in the nightlight, for example, one or two LED elements arranged on the substrate can obtain a sufficient amount of light as a nightlight. However, it is difficult to ensure uniform light distribution with only one or two LED elements arranged on the substrate. For this reason, when the night light is turned on, a locally bright part or a dark shadow part may occur in the shade, and there is a problem that the appearance of the night light is not good.

  The present invention has been made to solve the above problems. An object of the present invention is to provide a lighting apparatus that is less likely to have locally bright or dark portions in the shade when the nightlight is lit and has a good appearance when the nightlight is lit.

That is, the lighting fixture disclosed in this application is
An instrument body;
A substrate, and a plurality of LED elements disposed on the substrate, and using a part of the plurality of LED elements as a nightlight, a light source unit disposed on the instrument body,
A shade attached to the instrument body;
A light-transmitting protective cover that is disposed so as to cover the light source portion between the instrument body and the shade and has a light diffusion portion at a position corresponding to at least the LED element used as a nightlight,
Is provided.

  The light diffusing part of the lighting fixture is a light diffusing member provided on the protective cover.

The protective cover of the lighting fixture is composed of a plurality of protective members,
The light diffusion unit is configured by performing a light diffusion process on a part or all of the plurality of protective members.

  According to the lighting fixture disclosed in the present application, the light diffusing unit diffuses the light emitted from the LED element used as the nightlight. For this reason, in a state where the night light is turned on, locally bright and dark portions are hardly generated in the shade, and the appearance appearance when the night light is turned on can be improved.

The side view of the lighting fixture 11 which concerns on embodiment of this invention. The top view by the side of the irradiation surface in the state which has arrange | positioned the LED light source module 44, the protective cover 60, and the accommodating part cover 28 to the instrument main body 21. FIG. The figure which shows a part of cross section in the iii-iii line | wire of FIG. The top view by the side of the irradiation surface of the instrument main body 21. FIG. Sectional drawing in the vv line | wire of FIG. The top view of the protection member 61. FIG. Sectional drawing in the vii-vii line | wire of FIG. The top view by the side of the irradiation surface in the state which has arrange | positioned the LED light source module 44 to the instrument main body. The top view by the side of the irradiation surface in the state which has arrange | positioned the LED light source module 44 and the protective cover 60 to the instrument main body 21. FIG.

  The lighting fixture 11 which concerns on embodiment of this invention is demonstrated using FIGS. 1-9. The lighting fixture 11 which concerns on this embodiment is a lighting fixture which uses LED as a main light source and a nightlight. As shown in FIG. 1, the luminaire 11 is a ceiling light that is directly attached to a mounting surface such as a ceiling. In the following description, the side that irradiates light will be described as the irradiation surface side of the luminaire 11, and the side that is attached to an attachment surface such as a ceiling will be described as the attachment surface side.

  First, a schematic configuration of the lighting fixture 11 will be described. As shown in FIGS. 1 to 3, the lighting fixture 11 mainly includes a fixture main body 21, a power supply device 31, a light source unit 41, a shade 51, and a protective cover 60.

  The fixture main body 21 constitutes the main body of the lighting fixture 11. The lighting fixture 11 according to the present embodiment has a circular planar shape, and the outer contour shape of the fixture main body 21 in plan view is also circular. A holding portion 29 for holding the shade 51 is provided at the peripheral edge of the instrument main body 21.

  The seed 51 is a member that is attached so as to cover the irradiation surface side of the instrument main body 21 and distributes light to the outside while reflecting and diffusing light from the light source unit 41. The seed 51 is formed of a resin material having translucency. The overall shape of the shade 51 is circular in plan, and gently swells in a dome shape on the irradiation surface side. The seed 51 has a structure that can be attached to and detached from the instrument main body 21 for cleaning the inside of the shade 51, exchanging parts of the instrument main body 21, or the like. A held portion 52 to be attached to the instrument body 21 is formed at the opening edge of the shade 51.

  When attaching the shade 51 to the instrument main body 21, details are omitted, but when the shade 51 is arranged at the attachment position of the instrument main body 21 and rotated in the first direction, the held portion 52 of the shade 51 is moved to the instrument main body 31. The shade 51 is attached to the instrument body 21 by being held by the holding portion 29. Further, when the shade 51 is rotated in the second direction opposite to the first direction with the shade 51 attached to the instrument body 31, the held portion 52 of the instrument body 31 becomes the holding portion 29 of the shade 51. The shade 51 can be removed from the instrument main body 21.

  Next, the instrument body 21 will be described in detail. As shown in FIGS. 2 to 4, the fixture main body 21 constitutes the main body of the lighting fixture 11. The lighting fixture 11 according to the present embodiment has a circular planar shape, and the outer contour shape of the fixture main body 21 in plan view is also circular. The instrument main body 21 mainly includes a housing part 23, an attachment hole 24, a board attachment part 25, a first protection member attachment part 26, and a second protection member attachment part 27. The instrument body 21 is formed of a metal plate such as aluminum having thermal conductivity. In the present embodiment, the board attachment portion 25, the first protection member attachment portion 26, the second protection member attachment portion 27, and the like are formed by sheet metal processing.

  The accommodating part 23 is provided in the center part of the instrument main body 21 in the radial direction. The accommodating portion 23 is a portion in which a power supply device 31 and a lighting device (not shown) for turning on the light source portion 41 are accommodated. The accommodating part 23 is covered with the accommodating part cover 28, and the height and width | variety for accommodating the power supply device 31, a lighting device, etc. are ensured inside. Since the housing part cover 28 is provided adjacent to the light source part 41, when the housing part cover 28 blocks light from the light source part 41, a shadow of the housing part cover 28 is reflected on the shade 51. For this reason, the outer peripheral side of the accommodating part cover 28 is formed in the inclined surface 28A, and makes it difficult to block the light from the light source part 41. A flange portion 281 is formed on the outer peripheral portion of the accommodating portion cover 28, and a through hole 282 for attaching to the instrument main body 21 is formed in the flange portion 281.

  The attachment hole 24 is a part to which an adapter (not shown) is attached when the lighting apparatus 11 is attached to the ceiling. The mounting hole 24 is provided at a position that is the center of the instrument body 21 in the radial direction. The attachment hole 24 is provided so as to penetrate from the lower surface side of the housing portion 23 to the upper surface side of the instrument main body 21. When the lighting fixture 11 is attached to the ceiling, for example, the adapter is attached to the ceiling wiring fixture (hanging ceiling) for the lighting fixture, and the adapter is attached so as to be inserted into the mounting hole 24.

  The power supply device 31 is a device for lighting the light source unit 41 together with a lighting device (not shown) and the like. The power supply device 31 and the lighting device are accommodated in the accommodating portion 23. The power supply device 31 is provided with a connector 32. When attaching the lighting fixture 11 to a ceiling, for example, the connector 32 is connected to a connector (not shown) on the adapter side, so that it is electrically connected to an external power supply via the ceiling wiring fixture for the lighting fixture. The lighting device and the light source unit 41 are electrically connected by an electric wire (not shown).

  The board attaching part 25 is a part to which the light source part 41 is attached. As shown in FIGS. 3 and 5, the board mounting portion 25 is formed so as to protrude to the irradiation surface side of the instrument main body 21. Let L1 be the amount of protrusion of the substrate mounting portion 25 to the irradiation surface side with respect to the mounting surface side of the instrument body 21. The surface on which the light source unit 41 is arranged is formed flat.

  As shown in FIG. 4, a plurality of substrate mounting portions 25 are formed. In the present embodiment, the board attachment portions 25 are formed at eight locations. The region in which the board attaching portion 25 is formed is a region surrounding the accommodating portion 23, is radially outside the instrument main body 21 relative to the accommodating portion 23, and is closer to the instrument main body 21 than the outer peripheral edge portion of the instrument main body 21. This is a region slightly inside in the radial direction. In this region, the eight board mounting portions 25 are formed in a shape in which an annular ring having a certain width in the radial direction of the instrument body 21 is divided into eight equal parts in the circumferential direction. Each board attachment portion 25 is formed with an interval 251 between adjacent board attachment portions 25. A mounting hole 252 for fixing the LED light source module 44 of the light source unit 41 is formed in the substrate mounting unit 25.

  The first protection member attachment portion 26 and the second protection member attachment portion 27 are portions to which the protection member 61 constituting the protection cover 60 is attached. As shown in FIGS. 3 and 5, the first protection member attachment portion 26 and the second protection member attachment portion 27 are formed in a rib shape protruding toward the irradiation surface side of the instrument body 21. The amount of protrusion of the first protection member attachment portion 26 and the second protection member attachment portion 27 to the irradiation surface side with respect to the attachment surface side of the instrument body 21 is L2.

  As shown in FIG. 4, a plurality of first protection member attachment portions 26 and second protection member attachment portions 27 are formed. The plurality of first protection member attachment portions 26 are arranged on the same virtual circumference in the region between the accommodation portion 23 and the substrate attachment portion 25. The plurality of second protection member attachment portions 27 are arranged on the same virtual circumference in a region outside the substrate attachment portion 25 in the radial direction of the instrument main body 21.

  As shown in FIG. 5, the projection amount L2 of the first protection member mounting portion 26 and the second protection member mounting portion 27 to the irradiation surface side is larger than the projection amount L1 of the substrate mounting portion 25 to the irradiation surface side. Is set. As shown in FIG. 3, the projection amount L2 of the first protection member attachment portion 26 and the second protection member attachment portion 27 to the irradiation surface side and the projection amount L1 of the substrate attachment portion 25 to the irradiation surface side are respectively shown. The light source unit 41 and the protection member 61 are disposed in a state where the light source unit 41 is disposed on the substrate mounting unit 25 and the protection member 61 is disposed on the first protection member mounting unit 26 and the second protection member mounting unit 27. It is set to be in a non-contact state.

  As shown in FIG. 4, the first protective member mounting portion 26 has a convex portion 261 facing the radially outer side of the instrument main body 21 at a position corresponding to the interval 251 formed between the adjacent substrate mounting portions 25. Is formed. A mounting hole 262 for fixing the protection member 61 is formed in the convex portion 261. An attachment hole 263 for fixing the housing portion cover 28 and the protection member 61 is formed between the convex portion 261 and the convex portion 261 formed in each first protective member attachment portion 26.

  On the second protective member mounting portion 27, a convex portion 271 is formed at a position corresponding to the interval 251 formed between the adjacent substrate mounting portions 25 toward the inside in the radial direction of the instrument main body 21. A mounting hole 272 for fixing the protection member 61 is formed in the convex portion 271. In addition, a convex portion 273 is formed at a position that is intermediate between the adjacent interval 251 and the interval 251 toward the inside in the radial direction of the instrument main body 21. A mounting hole 274 for fixing the protection member 61 is formed in the convex portion 273. In addition, since the convex part 271 and the convex part 273 cannot be formed in the position where the holding | maintenance part 29 is formed, the circular convex part 275 is formed and the attachment hole 276 is formed there.

  As shown in FIGS. 3 and 8, the light source unit 41 includes a plurality of LED light source modules 44. In the present embodiment, the light source unit 41 is configured by eight LED light source modules 44 corresponding to the substrate mounting unit 25. Each LED light source module 44 is configured by mounting a plurality of LED elements 42 on a substrate 43. Among the plurality of LED elements 42, some of the elements are set as elements used as a nightlight, and the remaining elements are set as main light sources. In the present embodiment, the LED elements 42 </ b> A used as night lights are set in the two LED light source modules 44 out of the eight LED light source modules 44. For each LED light source module 44, one LED element 42A is used as a night light.

  As shown in FIGS. 3 and 8, the LED light source module 44 is disposed on the board mounting portion 25. The planar shape of the LED light source module 44 is a size that can be attached to the board mounting portion 25, and a shape in which a gap 45 is secured between the boards 43 of the LED light source modules 44 that are disposed adjacent to each other. As shown in FIG. 8, the plurality of LED light source modules 44 are arranged in an annular shape having a certain width in the radial direction of the instrument main body 21 in a state where the plurality of LED light source modules 44 are arranged on the board mounting portion 25. The two LED light source modules 44 in which the LED elements 42 </ b> A used as nightlights are set are arranged facing the diameter direction of the instrument body 21. The LED light source module 44 has a through hole (not shown) formed at a position corresponding to the mounting hole 252 formed in the substrate mounting portion 25, and is attached to the substrate mounting portion 25 using a bolt 46.

  As shown in FIGS. 3 and 6 to 9, the protective cover 60 is a member disposed so as to cover the light source unit 41 between the instrument main body 21 and the shade 51. The protective cover 60 includes a plurality of protective members 61. The protection member 61 has translucency, and is formed of a resin sheet material having translucency, for example. In the present embodiment, eight protection members 61 are provided corresponding to the LED light source modules 44, and each protection member 61 is arranged corresponding to each LED light source module 44 arranged on the board mounting portion 25. The The shape of the protection member 61 is slightly larger than the shape of each LED light source module 44 so that the LED light source module 44 can be covered.

  As shown in FIG. 2, FIG. 6, FIG. 7, and FIG. A portion 65 is provided. In the present embodiment, the light diffusion portion 65 is formed by fixing the light diffusion member 66 to the protection member 61A. The light diffusing member 66 is made of a resin sheet material having translucency, and a texture (small unevenness) is formed on one surface as a light diffusing treatment. The position where the light diffusing member 66 is fixed is a position corresponding to the LED element 42A used as a nightlight, and the central portion of the light diffusing member 66 is located on the irradiation surface side of the LED element 42A. The light diffusing member 66 is fixed to the protective member 61A by a sticking means using a double-sided tape or an adhesive.

  The protection member 61 is disposed on the first protection member attachment portion 26 and the second protection member attachment portion 27. More specifically, the protective member 61 is disposed so as to straddle the convex portion 261 of the first protective member mounting portion 26, the convex portion 271, the convex portion 273, and the convex portion 275 of the second protective member mounting portion 27. . As shown in FIG. 6, the mounting hole 262 of the convex portion 261 of the first protective member mounting portion 26, the mounting hole 272 of the convex portion 271 of the second protective member mounting portion 27, the mounting hole 274 of the convex portion 273, and the convex A through hole 62 is formed at a position corresponding to the mounting hole 276 of the portion 275. Further, a notch 63 is formed at a position corresponding to the mounting hole 263 of the first protection member mounting portion 26.

  As shown in FIG. 9, each protection member 61 is arranged so as to cover each LED light source module 44 arranged on the board attachment portion 25, and a convex portion 261 of the first protection member attachment portion 26 using a bolt 68, And attached to the convex part 271, the convex part 273, and the convex part 275 of the second protective member attaching part 27.

  Here, the adjacently disposed protective members 61 straddle the convex portions 261 of the first protective member mounting portion 26 and the convex portions 271 of the second protective member mounting portion 27 with the end portions 64 overlapped. Are arranged as follows. As shown in FIG. 7, the overlapped end portion 64 is disposed so as to overlap the irradiation surface side of the gap 45.

  As shown in FIG. 2, after the LED light source module 44 and the protection member 61 are attached to the instrument main body 21, the accommodating portion cover 28 is attached to the instrument main body 21. At this time, a part of the protective member 61 is pressed by the flange portion 281 of the housing portion cover 28. When the bolt 69 is passed through the through hole 282 of the flange portion 281 and fixed to the mounting hole 263, the housing portion cover 28 and the protection member 61 can be fixed simultaneously. Since the notch 63 of the protection member 61 corresponds to the position of the attachment hole 263, a state in which a part of the protection member 61 is interposed between the flange 281 and the first protection member attachment 26. can do.

  According to the lighting fixture 11 which concerns on this embodiment demonstrated above, it has the following effects.

  The protective cover 60 of the lighting fixture 1 is disposed so as to cover the light source portion 41 between the fixture main body 21 and the shade 51, and has a light diffusion portion 65 at a position corresponding to at least the LED element 42A used as a nightlight. . The light diffusing unit 65 diffuses light emitted from the LED element 42A used as a nightlight. For this reason, in the state which turned on the nightlight, it is hard to produce a bright part and a dark part locally on the shade 51, and the external appearance at the time of nightlight lighting can be made favorable.

  The light diffusing unit 65 of the luminaire 11 is a light diffusing member 66 provided on the protective member 61 of the protective cover 60. For this reason, it is not necessary to perform light diffusion processing on the entire protective cover 60, and the light diffusion portion 65 can be provided at low cost. Further, since the light diffusing unit 65 is provided in a narrow range, it is difficult to cause a decrease in light flux from the main light source.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said Example, A various change is possible. For example, the light diffusing portion 65 of the luminaire 11 is formed by providing the light diffusing member 66 on the protective member 61, but is not limited thereto. For example, you may perform a light-diffusion process to the whole protection member 61A corresponding to the LED light source module 44 in which the LED element 42A used as a nightlight is set. In this case, since the light diffusion unit 65 reliably covers the LED element 42A used as the nightlight, the light emitted from the LED element 42A used as the nightlight can be more reliably diffused.

  Further, not only the protective member 61A corresponding to the LED light source module 44 in which the LED element 42A used as the nightlight is set, but also the protective member 61 constituting the protective cover 60 and the entire protective member 61A are subjected to light diffusion treatment. Also good. In this case, it is not necessary to use the protective members 61 and 61A separately depending on the presence or absence of the light diffusion portion 65, and the number of parts can be reduced.

  Further, for example, the lighting fixture 11 is a round shape, but may be a square shape or other shapes. Moreover, you may apply to a pendant light etc. besides a ceiling light.

  The shapes of the substrate mounting portion 25, the first protective member mounting portion 26, the second protective member mounting portion 27, and the like, and the shape and number of the LED light source module 44, the protective member 61, and the like according to the present embodiment are examples. It is not limited to the shape or number of forms. For example, when the shape of the luminaire 11 is a square shape other than the round shape or other shapes, the shape or number of pieces can be set accordingly.

DESCRIPTION OF SYMBOLS 11 Lighting fixture 21 Appliance main body 23 Accommodating part 24 Attachment hole 25 Board attachment part 26 1st protection member attachment part 27 2nd protection member attachment part 31 Power supply device 41 Light source part 42 LED element 43 Board | substrate 44 LED light source module 51 Sede 60 Protective cover 61 Protective member 65 Light diffusing part 66 Light diffusing member

Claims (3)

An instrument body;
A substrate, and a plurality of LED elements disposed on the substrate, and using a part of the plurality of LED elements as a nightlight, and a light source unit disposed on the instrument body,
A shade attached to the instrument body;
A transparent protective cover having a light diffusing portion at a position corresponding to an LED element used as at least the night light, and disposed so as to cover the light source portion between the instrument body and the shade,
A lighting apparatus comprising: The lighting fixture according to claim 1,
The light diffusion portion is a light diffusion member provided on the protective cover.
A lighting apparatus characterized by that. It is a lighting fixture of any one of Claim 1 or 2,
The protective cover is composed of a plurality of protective members,
The light diffusion portion is configured by performing a light diffusion process on a part or all of the plurality of protective members.
A lighting apparatus characterized by that.

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