JP2018120797A - Light fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light fitting which can improve the aesthetic beauty when light is turned off.SOLUTION: A light fitting 1 includes: a light-emitting module 30; and an outer shell cover 60 covering the light-emitting module 30. The outer shell cover 60 comprises: a transparent base material 61; a light diffusion layer 63 which is provided at the light emitting module 30 side of the transparent base material 61 and has light transmissivity; and a decorative layer 62 provided between the transparent base material 61 and the light diffusion layer 63 and forming a predetermined pattern.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a lighting fixture for illuminating a space.

  A ceiling light is known as one of lighting fixtures for illuminating a space (see, for example, Patent Document 1). The ceiling light includes an instrument body attached to the ceiling, a board supported by the instrument body, a plurality of LEDs (Light Emitting Diode) mounted on the board, and an outer shell attached to the instrument body so as to cover the plurality of LEDs. And a cover (diffusion cover).

JP 2013-048167 A

  By the way, in order to enhance the lighting effect, lighting fixtures having a predetermined pattern on the outer cover have been studied. When the lighting apparatus is turned on, a predetermined pattern appears on the outer cover.

  However, in such a lighting fixture, even when the lighting fixture is turned off, when the lighting fixture is irradiated with external light, a pattern applied to the outer cover is visible, which may impair the beauty of the lighting fixture.

  Then, this invention is made | formed in view of such a subject, and it aims at providing the lighting fixture which can improve the beauty | look at the time of light extinction.

  In order to achieve the above object, a lighting apparatus according to an aspect of the present invention includes a light source and an outer cover that covers the light source, and the outer cover includes a transparent base material and the light source of the transparent base material. A light diffusing layer provided on the side and having translucency, and a decorative layer provided between the transparent base material and the light diffusing layer and constituting a predetermined pattern.

  According to the lighting fixture which concerns on 1 aspect of this invention, the beauty | look at the time of light extinction can be improved.

It is a perspective view which shows the external appearance of the ceiling side of the lighting fixture which concerns on embodiment. It is a perspective view which shows the external appearance by the side of the floor surface of the lighting fixture which concerns on embodiment. It is a disassembled perspective view which decomposes | disassembles and shows the lighting fixture which concerns on embodiment. It is sectional drawing which shows an example of the cross section of the lighting fixture which concerns on embodiment. It is sectional drawing which shows another example of the cross section of the lighting fixture which concerns on embodiment. It is a figure which shows an example of the pattern which floats on the outer cover which concerns on embodiment. It is a figure for demonstrating how the pattern looks at the time of lighting of the lighting fixture which concerns on embodiment, and light extinction.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangement of components, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a mimetic diagram and is not necessarily illustrated strictly. In each figure, substantially the same configuration is denoted by the same reference numeral, and redundant description may be omitted or simplified.

  In addition, the description of “substantially **” is intended to include what is substantially recognized as **. For example, when describing “substantially arc-shaped” as an example, it is substantially not only a complete arc-shaped but substantially It is intended to include what is recognized as an arc.

  In the drawings used for explanation in the following embodiments, coordinate axes may be shown. The negative side of the Z axis represents the floor (not shown) side, and the positive side of the Z axis represents the ceiling (not shown) side. The X-axis direction and the Y-axis direction are directions orthogonal to each other on a plane (horizontal plane) perpendicular to the Z-axis direction. The XY plane is a plane parallel to the surface on one side of the fixture body included in the lighting fixture. For convenience of explanation, in FIGS. 2 and 3, the lighting apparatus is illustrated in an upside down posture with respect to a normal use posture.

(Embodiment)
Hereinafter, the lighting fixture according to the present embodiment will be described.

[1. Configuration of lighting equipment]
[1-1. Overall configuration of lighting equipment]
First, the whole structure of the lighting fixture 1 which concerns on this Embodiment is demonstrated, referring FIGS. 1-3. FIG. 1 is a perspective view showing an external appearance of the lighting fixture 1 according to the present embodiment on the ceiling side. FIG. 2 is a perspective view showing an appearance of the floor surface side of the lighting fixture 1 according to the present embodiment. FIG. 3 is an exploded perspective view showing the lighting fixture 1 according to the present embodiment in an exploded manner.

  The luminaire 1 is a ceiling light that is installed on the ceiling of a building such as a house and illuminates the space inside the building. As shown in FIGS. 1 to 3, the lighting fixture 1 includes a fixture main body 10, a power supply unit 20, a light emitting module 30, a lens cover 40, a side cover 50, an outer cover 60, a frame body 70, and a cushion member 80. I have. The ceiling is an example of a construction material installation surface to which the lighting fixture 1 is attached.

  Hereinafter, each component of the lighting fixture 1 is demonstrated in detail, referring FIGS.

[1-2. Instrument body]
The instrument body 10 will be described with reference to FIGS. 1 and 3.

  The instrument body 10 is a housing for supporting the power supply unit 20, the light emitting module 30, the side cover 50, and the cushion member 80. The instrument body 10 is formed in a ring shape having a circular opening 11 at the center. The instrument body 10 is formed, for example, by pressing a sheet metal such as an aluminum plate or a steel plate.

  A holder 12 for attaching the instrument main body 10 to an instrument mounting member (not shown) is fixed to the peripheral edge of the opening 11. An instrument mounting member is detachably fitted in the holder 12. The instrument attachment member is an adapter for detachably attaching the instrument body 10 to a hooking sealing body (not shown) installed on the ceiling. The hook sealing body is electrically connected to a commercial power source (not shown) and an electric wire (not shown). By installing the luminaire 1 on the ceiling, AC power from a commercial power supply is supplied to the luminaire 1 via the electric wire and the hooked sealing body.

  The instrument body 10 also functions as a heat sink for dissipating heat from the light emitting module 30.

  Furthermore, as shown in FIG. 1, a plurality of cushion members 80 made of urethane or the like are attached to one surface of the instrument body 10 (the surface on the ceiling side in the present embodiment), for example. The plurality of cushion members 80 are arranged along the circumferential direction of the instrument body 10. When the lighting fixture 1 is installed on the ceiling, the plurality of cushion members 80 are sandwiched between the fixture main body 10 and the ceiling, thereby suppressing the wobbling or rotation of the fixture main body 10.

[1-3. Power supply unit]
Next, the power supply unit 20 will be described with reference to FIGS. 1 and 3. The power supply unit 20 is a unit for generating electric power for causing the light emitting module 30 to emit light. The power supply unit 20 is arrange | positioned at the surface of the one side of the instrument main body 10, for example. The power supply unit 20 includes a substrate 21, a plurality of circuit components 22 mounted on the substrate 21, and a case 23 that covers the substrate 21 and the plurality of circuit components 22.

  The substrate 21 is a printed wiring board for mounting a plurality of circuit components 22. The substrate 21 is attached to the other surface of the case 23 (in this embodiment, the surface on the floor surface side) so that the plurality of circuit components 22 face the floor surface side.

  Each of the plurality of circuit components 22 is a power supply circuit component constituting a power supply circuit for generating power for causing the light emitting module 30 to emit light. The plurality of circuit components 22 convert AC power supplied from the commercial power supply described above via electric wires into DC power. When the DC power generated by the plurality of circuit components 22 is supplied to the light emitting module 30, the light emitting module 30 emits light.

  The plurality of circuit components 22 may include not only the above-described power supply circuit components but also circuit components constituting other circuits. For example, the plurality of circuit components 22 may include a driving circuit component that configures a dimming circuit, a booster circuit, or the like, or includes a communication circuit component (communication module) that configures a communication circuit. Also good.

  The case 23 is a cover for covering the substrate 21 and the plurality of circuit components 22. In the present embodiment, the substrate 21 is fixed to the other surface of the case 23. The case 23 is made of, for example, metal or resin. When the case 23 is made of metal, the heat generated in the substrate 21 and the plurality of circuit components 22 can be efficiently radiated.

[1-4. Light emitting module]
Next, the light emitting module 30 will be described with reference to FIG.

  The light emitting module 30 is a light source for emitting white light, for example. White light is, for example, light having a color temperature (correlated color temperature) of 2600K to 7100K. The light emitting module 30 includes a plurality of substrates 31 and a plurality of light emitting elements 32 mounted on each of the plurality of substrates 31. The light emitting module 30 is a light source for indoor lighting that brightens the entire room.

  The substrate 31 is a printed wiring board on which a plurality of light emitting elements 32 are mounted, and is formed in a substantially arc shape. Each of the plurality of substrates 31 is attached to the other side surface (in this embodiment, the floor surface side surface) of the instrument body 10 with screws (not shown) so as to surround the opening 11 of the instrument body 10. Yes. In the present embodiment, an example in which the light emitting module 30 includes four substrates 31 is described. However, the number of the substrates 31 is not limited to this.

  As the substrate 31, for example, a resin substrate based on resin, a metal base substrate based on metal, a ceramic substrate made of ceramic, or the like can be used. The substrate 31 is not limited to a rigid substrate, and may be a flexible substrate.

  The plurality of light emitting elements 32 are arranged in the radial direction of the substrate 31. In the present embodiment, the plurality of light emitting elements 32 are arranged in six rows in the circumferential direction of the substrate 31. In each row, the plurality of light emitting elements 32 are arranged at intervals in the circumferential direction of the substrate 31. Thereby, the light emitting module 30 as a whole has a plurality of light emitting elements 32 arranged in a ring shape.

  Each of the light emitting elements 32 is a packaged surface mount device (SMD) type white LED element. That is, each of the light emitting elements 32 has a white resin package (container) having a recess, an LED chip primarily mounted on the bottom surface of the recess of the package, and a sealing member sealed in the recess of the package. doing. The LED chip is, for example, a blue LED chip that emits blue light. The sealing member contains a yellow phosphor such as YAG (yttrium, aluminum, garnet) that emits fluorescence using blue light from a blue LED chip as excitation light.

  As described above, each of the light emitting elements 32 is a BY type white LED element constituted by a blue LED chip and a yellow phosphor. Specifically, the yellow phosphor contained in the sealing member is excited by absorbing a part of the blue light from the blue LED chip and emits yellow light. The emitted yellow light and the blue light that is not absorbed by the yellow phosphor are mixed to generate white light. In this way, white light is emitted from each of the light emitting elements 32.

  In addition, the light source of the lighting fixture 1 is not specifically limited. For example, instead of the light emitting module 30, a light emitting module configured using a semiconductor light emitting element such as a semiconductor laser, an organic EL element (OLED), an inorganic EL element, or other solid light emitting elements may be used. Further, a fluorescent tube may be used instead of the light emitting module 30. Moreover, although the light emitting module 30 demonstrated the example which light-emits white light, it is not limited to this.

[1-5. Lens cover]
Next, the lens cover 40 will be described with reference to FIG. The lens cover 40 is an optical member for enlarging the light distribution angle of light from each of the light emitting elements 32.

  The lens cover 40 is formed in a ring shape. The lens cover 40 is made of a light-transmitting material (for example, a transparent resin such as acrylic (PMMA) or polycarbonate (PC)). The lens cover 40 is attached to the other surface of the instrument body 10 with screws (not shown) so as to cover each of the plurality of substrates 31.

  A plurality of lenses 41 corresponding to each of the plurality of light emitting elements 32 are formed on the lens cover 40. Light from each of the plurality of light emitting elements 32 passes through the corresponding lens 41. At this time, each of the plurality of lenses 41 enlarges the light distribution angle of the transmitted light.

[1-6. Side cover]
Next, the side cover 50 will be described with reference to FIG. The side cover 50 is a frame-shaped member that surrounds the light emitting module 30, and is an optical member for effectively using light incident on the side cover 50 from the light emitting module 30. In other words, the side cover 50 is disposed so as to cover the light emitting module 30 from the side.

  The side cover 50 is inclined outward from one end (the end on the ceiling side) toward the other end (the end on the floor side). For example, the side cover 50 expands in a taper shape as the side cover 50 moves away from the ceiling that is the installation surface. The side cover 50 is disposed between the instrument body 10 and the outer cover 60, and the side cover 50 is attached to the instrument body 10 by fixing one end of the side cover 50 to the instrument body 10. It is done. An outer cover 60 is attached to the other end of the side cover 50 via a frame body 70.

  The side cover 50 is made of a material having translucency, for example. For example, the side cover 50 is formed of a transparent acrylic resin. Thereby, the light incident on the side cover 50 from the light emitting module 30 passes through the side cover 50 and is emitted to the outside. The ceiling surface or wall surface is mainly illuminated by the light emitted from the side cover 50. Thereby, the space which the lighting fixture 1 illuminates can be made brighter.

  For the side cover 50, for example, a milky white diffusion panel in which a light diffusing material is dispersed can be used. As a result, the light incident on the side cover from the light emitting module 30 is scattered by passing through the side cover 50, so that the light emitted from the side cover 50 has a substantially uniform brightness. Can illuminate the wall.

  In addition, although the example in which the side cover 50 has translucency was demonstrated, it is not limited to this. The side cover 50 does not have translucency and may have reflectivity (light reflectivity). For example, the side cover 50 may be formed by pressing a sheet metal such as an aluminum plate or a steel plate. Furthermore, in order to improve reflectivity and improve light extraction efficiency on the inner peripheral surface of the side cover 50, a white paint may be applied or a reflective metal material may be deposited. Light incident on the inner peripheral surface of the side cover 50 is reflected toward the outer cover 60. Thereby, the light quantity of the light radiate | emitted from the outer cover 60 of the lighting fixture 1 can be increased.

[1-7. Outer cover]
Next, the outer cover 60 will be described with reference to FIGS. FIG. 4 is a cross-sectional view showing an example of a cross section of the lighting fixture 1 according to the present embodiment. Specifically, FIG. 4A is a cross-sectional view taken along line IV-IV in FIG. FIG. 4B is an enlarged cross-sectional view of the broken line region of FIG. In more detail, it is sectional drawing in IV (b) -IV (b) of FIG. 6 mentioned later. Here, the sectional view shows only a section of the cut lighting fixture 1, and the same applies to the following.

  The outer cover 60 (lower panel) is a cover that covers the light emitting module 30. In the present embodiment, the planar view shape of the outer cover 60 is a substantially circular shape.

  As shown in FIG. 4A, the outer cover 60 is fixed to the side cover 50 by the other end of the side cover 50 and the frame body 70. A frame body 70 is attached to the other end of the side cover 50 with screws 71. The outer cover 60 is fixed to the side cover 50 by the outer peripheral portion of the outer cover 60 being sandwiched between the other end of the side cover 50 and the frame body 70.

  In addition, the cross-sectional view shape of the outer cover 60 is a substantially rectangular shape. In other words, the outer cover 60 is a flat cover. The cross-sectional view refers to a cross section cut along a plane perpendicular to the ceiling (for example, a plane defined by the Y axis and the Z axis) from a direction orthogonal to the plane, and the same applies to the following. It is.

  The light emitted from the light emitting module 30 attached to the instrument body 10 enters the outer cover 60 through the lens cover 40. And the light which permeate | transmitted the outer cover 60 illuminates a floor surface etc. as illumination light. Note that light emitted from the light emitting module 30 and reflected by the side cover 50 also enters the outer cover 60.

  Further, the side cover 50 and the outer cover 60 are separately manufactured covers, and as described above, the outer cover 60 is fixed to the side cover 50 with screws or the like.

  As shown in FIG. 4B, the outer cover 60 includes a transparent base 61, a decoration layer 62, and a light diffusion layer 63. The light diffusion layer 63 is a member for scattering light emitted from the light emitting module 30. The transparent substrate 61 is a member for transmitting the light scattered by the light diffusion layer 63. The decorative layer 62 is a member for forming a predetermined pattern on the outer cover 60. The outer cover 60 according to the present embodiment is characterized in that a decoration layer 62 is disposed between the transparent substrate 61 and the light diffusion layer 63. Light from the light emitting module 30 enters the light diffusion layer 63 of the outer cover 60 and is emitted from the transparent substrate 61 as illumination light.

  The transparent substrate 61 is a substrate formed of a transparent material. In the present embodiment, the transparent substrate 61 is formed of a transparent acrylic resin. Thereby, the light scattered by the light diffusion layer 63 can be transmitted.

  The cross-sectional view shape of the transparent substrate 61 is a substantially rectangular shape. That is, the transparent substrate 61 is a flat member. Thereby, when forming the decoration layer 62 and the light-diffusion layer 63 on the transparent base material 61 by printing or application | coating etc., the decoration layer 62 and the light-diffusion layer 63 become easy to form. In other words, the productivity at the time of forming the decoration layer 62 and the light-diffusion layer 63 improves because the transparent base material 61 is flat form. The thickness of the transparent substrate 61 is not particularly limited, but is 3 mm as an example. The transparent substrate 61 may be a transparent sheet or a transparent film.

  The decorative layer 62 forms a predetermined pattern that floats on the outer cover 60. The decorative layer 62 is provided on the surface of the transparent base 61 on the light emitting module 30 side (hereinafter also referred to as an inner surface). The decorative layer 62 is formed, for example, by printing silk printing ink on the inner surface of the transparent substrate 61 by silk printing. The decoration layer 62 is formed on a part of the inner surface of the transparent substrate 61. Note that the printing method is not limited to silk printing. Since the transparent substrate 61 according to the present embodiment has a flat plate shape and less irregularities, for example, the decoration layer 62 can be easily formed by various printing methods such as inkjet printing. Moreover, although the example which forms the decoration layer 62 in the inner surface of the transparent base material 61 was demonstrated above, it is not limited to this. For example, another layer may be formed between the transparent substrate 61 and the decorative layer 62. That is, the decorative layer 62 may be formed on the light emitting module 30 side with respect to the transparent substrate 61.

  Although the thickness of the decoration layer 62 is not specifically limited, As an example, they are 5 micrometers or more and 10 micrometers or less. Thereby, the decoration layer 62 can transmit the light scattered by the light diffusion layer 63 at a predetermined ratio. In other words, the light scattered by the light diffusing layer 63 is transmitted through the decoration layer 62, so that the light intensity is weakened. That is, the light transmitted through the decoration layer 62 becomes darker than the light that does not transmit through the decoration layer 62. Therefore, when the lighting apparatus 1 is viewed from the floor surface, a pattern corresponding to the decoration layer 62 (for example, a pattern with light and darkness) appears on the outer cover 60.

  In addition, the decoration layer 62 is not limited to the said material or formation method. For example, the decoration layer 62 may be realized by disposing a transparent sheet or film on which a predetermined pattern is printed on the inner surface of the transparent substrate 61. The provision of the decoration layer 62 is intended to include that the decoration layer 62 is formed by silk printing or the like, or that the decoration layer 62 is arranged by a sheet or the like.

  As shown in FIG. 4B, the portion of the outer cover 60 where the decorative layer 62 is formed is an example of the first cover portion 60a, and the portion of the outer cover 60 where the decorative layer 62 is not formed. Is an example of the second cover part 60b.

  The light diffusion layer 63 is provided on the inner surface of the transparent substrate 61 on which the decoration layer 62 is formed. The light diffusion layer 63 is formed of a light transmissive material. For example, the light diffusion layer 63 is formed by coating an acrylic paint on the inner surface of the transparent substrate 61 on which the decoration layer 62 is formed. For example, the light diffusion layer 63 is formed by applying diffusion coating to the inner surface of the transparent substrate 61 on which the decoration layer 62 is formed.

  Although the thickness of the light-diffusion layer 63 is not specifically limited, As an example, they are 10 micrometers or more and 15 micrometers or less.

  As shown in FIG. 4B, the light diffusing layer 63 formed by diffusing coating has a cross-sectional view where the decorative layer 62 is provided at the surface of the decorative layer 62 on the light emitting module 30 side. In contact with the inner surface of the transparent substrate 61 at a portion where the decorative layer 62 is not provided.

  In addition, the light-diffusion layer 63 is not limited to the said material or formation method. For example, the light diffusion layer 63 may be realized by disposing a sheet or a film having a predetermined diffusion degree on the inner surface of the transparent substrate 61 on which the decoration layer 62 is formed. Moreover, although the above demonstrated the example which forms the light-diffusion layer 63 in the inner surface of the transparent base material 61 in which the decoration layer 62 was formed, it is not limited to this. For example, another layer may be formed between the transparent substrate 61 and the light diffusion layer 63 or between the decoration layer 62 and the light diffusion layer 63. In other words, the light diffusion layer 63 only needs to be formed on the light emitting module 30 side with respect to the transparent substrate 61.

  Here, the case where the light-diffusion layer 63 is a sheet | seat or a film is demonstrated, referring FIG. FIG. 5 is a cross-sectional view illustrating another example of the cross section of the lighting fixture 1 according to the present embodiment. Specifically, FIG. 5A is a cross-sectional view taken along the line IV-IV in FIG. 1, and FIG. 5B is an enlarged cross-sectional view of the broken line region in FIG. Note that FIG. 5A is the same cross-sectional view as FIG.

  As shown in FIG. 5B, when the light diffusion layer 63a is a sheet or a film, the light diffusion layer 63a is a light emitting module 30 of the decoration layer 62 in a portion where the decoration layer 62 is provided in a cross-sectional view. It touches the side surface. On the other hand, in the portion where the decorative layer 62 is not provided, the light diffusion layer 63 a is not in contact with the inner surface of the transparent substrate 61. In other words, in the portion where the decoration layer 62 is not provided, for example, the air layer 64 is formed between the transparent substrate 61 and the light diffusion layer 63a. In other words, the light diffusion layer 63 a is formed on the light emitting module 30 side with respect to the transparent substrate 61. Also in this case, the same effect as that obtained when the light diffusion layer 63 is formed by diffusion coating described later is obtained.

  As shown in FIG. 5B, the portion of the outer cover 60 where the decorative layer 62 is formed is an example of the first cover portion 60a, and the portion of the outer cover 60 where the decorative layer 62 is not formed. (For example, the part in which the air layer 64 is formed) is an example of the second cover part 60b.

  The provision of the light diffusion layer 63 is intended to include that the light diffusion layer 63 is formed by applying paint or the light diffusion layer 63 is disposed by a sheet or the like.

  As described above, in the outer cover 60 according to the present embodiment, the decorative layer 62 is provided between the transparent substrate 61 and the light diffusion layer 63.

  Next, an example of a pattern that appears on the outer cover 60 when the lighting fixture 1 is turned on will be described with reference to FIG. FIG. 6 is a diagram showing an example of a pattern that appears on the outer cover 60 according to the present embodiment. In other words, when the lighting fixture 1 is turned on, it is an example of a pattern that appears on the outer cover 60 when the lighting fixture 1 is viewed from the floor surface. Specifically, the pattern of the broken line region R in FIG. 2 is shown. Further, in FIG. 6, a black portion indicates that the light is dark, and a white portion indicates that the light is bright.

  Since the difference in transmittance between the first cover portion 60a and the second cover portion 60b of the outer cover 60 according to the present embodiment is 10% or more, a bright and dark pattern is formed on the outer cover 60 as shown in FIG. It can be raised. 6 is formed by the light transmitted through the first cover portion 60a of FIG. 4B. 6 is formed by light transmitted through the second cover portion 60b of FIG. 4B.

  In addition, the pattern which floats on the outer cover 60 is not limited to the pattern shown in FIG. For example, the pattern may be a character, a figure (geometric pattern), a painting, or the like. Further, the pattern is not limited to two bright and dark gradations as shown in FIG. For example, a pattern having three or more gradations may be used. Alternatively, the pattern may be composed of a plurality of colors. This is realized, for example, by printing ink containing a predetermined pigment or the like.

[1-8. Frame]
Next, the frame body 70 will be described with reference to FIGS. The frame body 70 is a member for fixing the outer cover 60 to the side cover 50.

  As shown to (a) of FIG. 4, the cross-sectional view shape of the frame 70 is a substantially L shape. A screw hole (not shown) protruding toward the ceiling is formed on the ceiling-side surface of the frame body 70. The side cover 50 and the outer cover 60 are formed with through holes (for example, notched openings) corresponding to the screw holes of the frame body 70. The outer cover 60 is fixed to the side cover 50 by inserting the screw holes of the frame body 70 into the through holes and screwing the screws 71 into the screw holes. Thereby, it can suppress that the outer shell cover 60 rotates in the circumferential direction by an impact or the like.

  Since the screw holes formed in the frame body 70 are formed so as to protrude from the ceiling side surface of the frame body 70 to the ceiling side, as shown in FIG. Cannot be seen. In other words, by using the frame body 70, the outer cover 60 can be fixed to the side cover 50 without impairing the beauty of the lighting fixture 1.

[2. How the pattern looks when lit and not lit]
Next, how the pattern appears when the lighting fixture 1 of the present embodiment is turned on and off is described with reference to FIG. FIG. 7 is a diagram for explaining how the pattern appears when the lighting fixture 1 according to the present embodiment is turned on and off. 7A is a diagram for explaining how the pattern looks when the lighting fixture 1 is turned on, and FIG. 7B is a diagram for explaining how the pattern looks when the lighting fixture 1 is turned off. In addition, the arrow in a figure has shown an example of light. The light in FIG. 7A is light from the light emitting module 30 of the lighting fixture 1. The light in FIG. 7B is external light that enters the outer cover 60 of the lighting fixture 1 from the outside of the lighting fixture 1. The external light is light incident on the outer cover 60 in addition to the light from the light emitting module 30. For example, the outside light is sunlight, light from a video display device such as a television, or other lighting equipment.

  As shown in FIG. 7A, the light from the light emitting module 30 enters the light diffusion layer 63 of the outer cover 60. In other words, the light emitting module 30 and the light diffusing layer 63 are arranged to face each other, and light from the light emitting module 30 first enters the light diffusing layer 63 in the outer cover 60. Light incident on the light diffusion layer 63 is scattered by the light diffusion layer 63.

  In the first cover portion 60 a of the outer cover 60, the light scattered by the light diffusion layer 63 enters the decoration layer 62. The decoration layer 62 has a predetermined transmittance, and light incident on the decoration layer 62 is attenuated according to the transmittance of the decoration layer 62. The dimmed light is irradiated from the lighting fixture 1 by passing through the transparent substrate 61. On the other hand, in the second cover portion 60 b of the outer cover 60, the light scattered by the light diffusion layer 63 is incident on the transparent base material 61 and is transmitted through the transparent base material 61 to be irradiated from the lighting fixture 1. That is, the decorative layer 62 has light (also described as dark light) transmitted through the first cover portion 60a of the outer cover 60, as compared with light (also described as bright light) transmitted through the second cover portion 60b. The light is reduced by the amount corresponding to the light transmittance. Thereby, when the lighting fixture 1 is seen from the floor surface side, the pattern formed by the brightness of light on the outer cover 60 can be seen. Specifically, the light transmitted through the first cover part 60a appears darker than the light transmitted through the second cover part 60b. In FIG. 7A, the light is dimmed by reducing the width of the arrow.

  The pattern becomes clearer as the difference in brightness between dark light and bright light increases. In other words, the larger the difference in light transmittance (total light transmittance) between the first cover portion 60a and the second cover portion 60b, the clearer the pattern can be seen. For example, the difference in light transmittance between the first cover portion 60a and the second cover portion 60b of the outer cover 60 is 10% or more. In other words, the light transmittance of the first cover portion 60a is 10% or more lower than the light transmittance of the second cover portion 60b. Thereby, when the lighting fixture 1 is lit, the pattern can be clearly seen. The difference in light transmittance is controlled by the thickness of the decoration layer 62, for example. For example, by setting the thickness of the decoration layer 62 to 5 μm or more, the difference in light transmittance between the first cover portion 60a and the second cover portion 60b can be set to 10% or more.

  The light transmittance of the first cover part 60a is 44% as an example. Moreover, the light transmittance with the 2nd cover part 60b is 59% as an example.

  Here, as a comparative example, a case where the base material (in this embodiment, the transparent base material 61) has a light diffusion function and the decoration layer is formed on the light source side surface of the base material will be described. In this case, the light attenuated by the decoration layer is scattered by the base material and is irradiated from the lighting fixture. Further, light that does not pass through the decoration layer is directly incident on the base material and scattered by passing through the base material. Therefore, when the base material is viewed in plan, in a region near the boundary between the portion where the decoration layer is formed and the portion where the decoration layer is not formed, the light transmitted through the decoration layer is attenuated and the decoration layer Irradiated from the base material is mixed with light that does not pass through. Therefore, when the lighting apparatus is viewed from the floor side, the outline of the pattern may not be clearly visible. On the other hand, in the outer cover 60 according to the present embodiment, the decoration layer 62 is provided between the transparent substrate 61 and the light diffusion layer 63. In other words, the light diffusion layer 63 is not provided between the decorative layer 62 and the transparent substrate 61. Thereby, since the light which permeate | transmitted the decoration layer 62 is not scattered by the light-diffusion layer 63, the outline of a pattern can be seen clearly with the lighting fixture 1 which concerns on this Embodiment compared with a comparative example. In other words, according to the lighting fixture 1 which concerns on this Embodiment, the effect effect of illumination can be improved rather than before.

  In addition, although the external light may enter into the lighting fixture 1 when the lighting fixture 1 is lighting, the external light which enters at the time of lighting is abbreviate | omitted in (a) of FIG.

  Next, the appearance of the decoration layer 62 when the lighting fixture 1 is turned off will be described with reference to FIG. When the lighting fixture 1 is turned off, that is, when no light is emitted from the light emitting module 30, external light may enter the lighting fixture 1.

  External light is incident on the floor side surface (also referred to as the back surface) of the transparent base 61 of the outer cover 60. The outer cover 60 is a transparent base material and reflects incident external light on the back surface of the transparent base material 61. For example, external light incident from a predetermined angle is totally reflected. That is, since the transparent base material 61 is a transparent base material and reflects external light, the external light transmitted through the transparent base material 61 can be reduced.

  Of the external light transmitted through the transparent substrate 61, the external light transmitted through the portion where the decorative layer 62 is formed passes through the decorative layer 62 and enters the light diffusion layer 63. At this time, the external light transmitted through the transparent substrate 61 is further reduced by transmitting through the decoration layer 62. On the other hand, outside light that has passed through the transparent substrate 61 and has passed through a portion where the decorative layer 62 is not formed enters the light diffusion layer 63. For example, external light that passes through a portion where the decoration layer 62 is not formed directly enters the light diffusion layer 63. That is, since the light does not pass through the decoration layer 62, it is not dimmed by the decoration layer 62. And the external light which permeate | transmitted the decoration layer 62 and the external light which did not permeate | transmit the decoration layer 62 are scattered by transmitting the light-diffusion layer 63. FIG. The external light scattered on the floor surface side by the light diffusion layer 63 passes through the transparent substrate 61 and is irradiated on the floor surface side.

  External light (also referred to as dark external light) that passes through a portion of the outer cover 60 where the decorative layer 62 is formed, is scattered by the light diffusion layer 63 and is irradiated from the transparent substrate 61, and the decorative layer 62 is formed. The brightness is different from the external light (also referred to as bright external light) that passes through the part that has not been transmitted and is scattered by the light diffusion layer 63 and irradiated from the transparent substrate 61. Specifically, since the dark external light is dimmed when passing through the decorative layer 62, it is darker than the bright external light. If the difference in brightness between dark and bright outside light is large, the pattern looks good when viewed from the floor.

  In the outer cover 60 according to the present embodiment, external light is first reflected by the surface of the transparent base 61 on the floor side, so that the amount of external light transmitted through the transparent base 61 is incident on the transparent base 61. Less than the amount of outside light. A difference in brightness occurs between dark external light and bright external light depending on whether or not the decorative layer 62 is transmitted. However, since the amount of external light transmitted through the transparent substrate 61 is small, the dark external light and the bright external light are bright. There is little difference in brightness (luminance difference) from outside light. That is, it is difficult to see the pattern by the decoration layer 62 from the floor side even when the lighting fixture 1 that is turned off and irradiated with external light is viewed. Therefore, when the lighting fixture 1 is turned off, it is possible to reduce the appearance of a pattern on the outer cover 60 of the lighting fixture 1 and impairing the beauty of the lighting fixture 1. In other words, according to the lighting fixture 1 which concerns on this Embodiment, the beauty | look of the lighting fixture 1 at the time of light extinction can be improved rather than before.

  Here, as a comparative example, a case where the base material (in this embodiment, the transparent base material 61) has a light diffusing function and the decoration layer is formed on the floor side surface of the base material will be described. . That is, the outer cover is composed of the base material and the decorative layer. In this case, outside light is directly incident on the decorative layer in the portion where the decorative layer is formed. Moreover, in the part in which the decoration layer is not formed, external light is directly incident on the base material. That is, unlike the lighting fixture 1 according to the present embodiment, the external light is not dimmed before the external light is incident on the decorative layer or the base material. Therefore, the difference in brightness between the external light transmitted through the decorative layer and scattered by the base material, and the external light not transmitted through the decorative layer and scattered by the base material is larger than that of the lighting fixture 1. Therefore, in the lighting fixture according to the comparative example, it is easy to see the pattern when the lighting fixture is turned off. Furthermore, since the unevenness | corrugation by the decoration layer is formed in the surface by the side of the floor surface of the base material which concerns on a comparative example, the shadow by the said unevenness | corrugation is easy to see.

  On the other hand, in the outer cover 60 according to the present embodiment, the decoration layer 62 is provided between the transparent substrate 61 and the light diffusion layer 63. In other words, irregularities due to the decoration layer 62 are not formed on the back surface of the transparent substrate 61. Therefore, it is difficult to see the shadow of the decoration layer 62. Thereby, it is hard to see a pattern at the time of light extinction compared with a comparative example.

  Note that if the difference in light transmittance between the first cover portion 60a and the second cover portion 60b is large, that is, if the decorative layer 62 is thick, the pattern is easily visible when the light is turned off. From the viewpoint of reducing the appearance of the pattern when the light is turned off, the thickness of the decoration layer 62 is preferably 10 μm or less.

[3. effect]
Next, the effect of the lighting fixture 1 which concerns on this Embodiment is demonstrated.

  The lighting fixture 1 according to the present embodiment includes a light source (for example, the light emitting module 30) and an outer cover 60 that covers the light source. The outer cover 60 is provided between the transparent substrate 61, the light diffusion layer 63 provided on the light source side of the transparent substrate 61 and having translucency, and between the transparent substrate 61 and the light diffusion layer 63. And a decorative layer 62 constituting the.

  Thereby, when the luminaire 1 is turned off and external light is incident on the luminaire 1, the external light is reflected by the transparent base material 61, and thus the amount of external light transmitted through the transparent base material 61. Is smaller than the amount of external light incident on the transparent substrate 61. Outside light (dark external light) that passes through the portion of the outer cover 60 where the decorative layer 62 is formed, is scattered by the light diffusion layer 63 and is irradiated from the transparent substrate 61, and the decorative layer 62 is not formed. The external light (bright external light) transmitted through the portion, scattered by the light diffusion layer 63 and irradiated from the transparent base material 61 has a difference in brightness depending on whether or not the decoration layer 62 is transmitted. In the lighting fixture 1, since the light quantity of the external light permeate | transmitted the transparent base material 61 is small, the brightness difference (luminance difference) of dark external light and bright external light also decreases. That is, it is possible to reduce the appearance of a pattern on the outer cover 60 of the luminaire 1 when the lamp is turned off, thereby impairing the beauty of the luminaire 1. In other words, according to the lighting fixture 1 which concerns on this Embodiment, the beauty | look of the lighting fixture 1 at the time of light extinction can be improved.

  Furthermore, since the decoration layer 62 is provided between the transparent base 61 and the light diffusion layer 63, that is, the light transmitted through the decoration layer 62 is not scattered by the light diffusion layer 63, illumination from the floor surface side. When the device 1 is viewed, a clear outline can be seen. Therefore, the lighting effect can be enhanced as compared with the conventional case.

  The outer cover 60 includes a first cover part 60a on which the decorative layer 62 is formed and a second cover part 60b on which the decorative layer 62 is not formed, and the light transmittance of the first cover part 60a. Is 10% or more lower than the light transmittance of the second cover portion 60b.

  Thereby, when the lighting fixture 1 is lit, the pattern constituted by the decoration layer 62 can be clearly seen from the floor surface side of the lighting fixture 1.

  The transparent substrate 61 has a flat plate shape.

  Thereby, when the decoration layer 62 and the light diffusion layer 63 are formed on the transparent base material 61, since the surface of the transparent base material 61 is not uneven, the decoration layer 62 and the light diffusion layer 63 are formed by an easy method such as printing. can do.

  The decorative layer 62 is formed by silk printing.

  Accordingly, the decoration layer 62 can be formed by a general printing method such as silk printing.

  Moreover, the thickness of the decoration layer 62 is 5 micrometers or more and 10 micrometers or less.

  Thereby, the light transmittance of the portion of the outer cover 60 where the decorative layer 62 is formed can be reduced by 10% or more compared to the light transmittance of the portion of the outer cover 60 where the decorative layer 62 is not formed. In other words, the pattern can be clearly shown by setting the thickness of the decoration layer 62 to 5 μm or more and 10 μm or less.

(Other embodiments)
While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments.

  For example, although the said embodiment demonstrated the case where the installation surface of the construction material to which the lighting fixture 1 was attached was a ceiling, an installation surface is not limited to this. For example, the installation surface of the construction material may be a wall of a building. In addition, when an installation surface is a wall, the surface of one side is the wall etc. in which the lighting fixture 1 is installed, and the surface of the other side is a wall etc. which oppose an installation surface.

  Thereby, there exists an effect similar to the case where the installation surface of a construction material is a ceiling.

  Moreover, in the said embodiment, although the transparent base material 61 demonstrated the example which is a flat member, the shape of the transparent base material 61 is not specifically limited. For example, the transparent substrate 61 may have a dome shape or other shapes. For example, the planar view shape of the transparent substrate 61 may be a rectangular shape (square shape) or a long shape. In addition, when the transparent base material 61 is dome shape, the outer cover 60 may be directly attached to the instrument main body 10. That is, when the transparent base material 61 has a dome shape, the lighting fixture 1 may not include the side cover 50.

  Thereby, there exists an effect similar to the case where the transparent base material 61 is flat form.

  Moreover, in the said embodiment, although the lighting fixture 1 was set as the ceiling light, it is not limited to this. For example, it is good also as a bracket light, a bathroom light, or a kitchen light.

  In the above embodiment, the light emitting element has an SMD structure, but the present invention is not limited to this. For example, a COB (Chip On Board) structure in which an LED chip is directly mounted on a substrate may be used. In this case, the plurality of LED chips mounted on the substrate may be collectively sealed by the sealing member, or may be individually sealed. The sealing member may contain a wavelength conversion material such as the yellow phosphor described above.

  Moreover, in the said embodiment, although the light emitting module 30 was comprised by arranging the some board | substrate 31 in a ring shape, it is not limited to this. For example, the light emitting module 30 may be configured by a single ring-shaped substrate.

  Moreover, although the said embodiment demonstrated the example in which the light emitting element 32 was multiply arranged by the board | substrate 31, it is not limited to this. For example, the number of light emitting elements 32 arranged on the substrate 31 may be one.

  Moreover, although the said embodiment demonstrated the example in which the side cover 50 and the outer cover 60 are separate bodies, it is not limited to this. For example, the side cover 50 and the outer cover 60 may be integrally formed.

  Moreover, although the said embodiment demonstrated the example in which one type of pattern floats on the outer cover 60, it is not limited to this. A plurality of different patterns may be raised on the outer cover 60.

  5B illustrates an example in which the air layer 64 is formed between the transparent base material 61 and the light diffusion layer 63 in the portion where the decoration layer 62 is not formed. It is not limited. For example, in a portion where the decoration layer 62 is not formed, a resin layer made of a transparent resin or the like may be formed between the transparent substrate 61 and the light diffusion layer 63.

  Moreover, in the said embodiment, although the example whose instrument main body 10 was ring shape was demonstrated, the shape of the instrument main body 10 is not specifically limited.

  In addition, it is realized by arbitrarily combining the components and functions in each embodiment without departing from the gist of the present invention, and forms obtained by making various modifications conceived by those skilled in the art to the above-described embodiments. Forms are also included in the present invention.

1 Lighting equipment 30 Light emitting module (light source)
60 outer cover 60a first cover part 60b second cover part 61 transparent substrate 62 decoration layer 63, 63a light diffusion layer

Claims (5)

A light source;
An outer cover that covers the light source,
The outer cover is
A transparent base material, a light diffusing layer provided on the light source side of the transparent base material and having translucency, a decorative layer provided between the transparent base material and the light diffusing layer and constituting a predetermined pattern; Lighting equipment composed of. The outer cover has a first cover part in which the decoration layer is formed, and a second cover part in which the decoration layer is not formed,
The lighting fixture according to claim 1, wherein the light transmittance of the first cover portion is 10% or more lower than the light transmittance of the second cover portion. The lighting fixture according to claim 1 or 2, wherein the transparent substrate has a flat plate shape. The lighting fixture according to claim 1, wherein the decoration layer is formed by silk printing. The lighting fixture of any one of Claims 1-4 whose thickness of the said decoration layer is 5 micrometers or more and 10 micrometers or less.

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