JP2023154116A - Lighting apparatus - Google Patents

Abstract

To obtain a lighting apparatus that realizes high design performance while suppressing a manufacturing cost.SOLUTION: A lighting apparatus includes: an apparatus body to be fitted to a fitting part; and a light source unit attached to the apparatus body, having a first light-emitting part to emit first light and a second light-emitting part to emit second light. The light source unit includes: a frame holding the first light-emitting part; a decorative frame supporting the frame and holding the second light-emitting part; a scatter plate provided so as to be elongated in one direction with respect to the frame and to guide light emitted from the first light-emitting part; and a diffuser plate provided so as to be slanted from the scatter plate toward the decorative frame and to guide light emitted from the second light-emitting part. An end face of the diffuser plate facing the scatter plate is slanted from an irradiation object side toward the scatter plate and inside.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a lighting fixture that includes a fixture body that is attached to an attached part with a fixture, and a light source unit that is attached to the fixture body.

2. Description of the Related Art Conventionally, lighting fixtures are known that include a fixture body that is attached to an attached part with a fixture, and a light source unit that is attached to the fixture body. Patent Document 1 discloses a lighting fixture including, as a light source unit, a first light source unit having a scattering plate and a second light source unit having a diffuser plate. In Patent Document 1, a scattering plate provided to extend horizontally and an end face of the diffuser plate provided at an angle face each other. The end face of the diffuser plate is a flat portion extending along the diffuser plate. By sealing between the scattering plate and the plane part, dust, insects, etc. are prevented from entering the inside of the instrument body. The inclined portion and the flat portion of the scattering plate are formed by, for example, adhering two acrylic plates. In Patent Document 1, in order to avoid the fact that the flat part of the diffuser plate emits light when the lighting equipment is viewed from the irradiation target side, for example, the flat part of the diffuser plate is tilted in the direction of inclination. It may be possible to turn it back.

JP2021-26796A

However, in the lighting fixture disclosed in Patent Document 1, when two acrylic plates are bonded together, it takes time and effort to manufacture and there is a risk that the bonding strength may be insufficient. In order to solve this problem, a method of vacuum forming the diffuser plates has been considered, but since the boundary between the scattering plates becomes undercut, the shape is restricted. This makes it difficult to fold back the flat portion of the diffuser plate in the direction of inclination. If this were to be realized, the structure of the mold used for injection molding would be complicated, increasing the cost of the mold. In this way, it is desired to reduce manufacturing costs while achieving high design quality.

The present disclosure has been made in order to solve the above-mentioned problems, and aims to obtain a lighting fixture that achieves high design quality and suppresses manufacturing costs.

A lighting fixture according to the present disclosure includes a fixture main body attached to an attached part, a first light emitting part that is attached to the fixture main body and emits a first light, and a second light emitting part that emits a second light. A light source unit has a frame that holds the first light emitting section, a decorative frame that supports the frame and holds the second light emitting section, and a frame that extends in one direction with respect to the frame. A scattering plate is provided to guide the light emitted from the first light emitting part, and a diffusion plate is provided to be inclined from the scattering plate toward the decorative frame and guides the light emitted from the second light emitting part. However, the end face of the diffuser plate facing the scattering plate is inclined from the irradiation target side toward the scattering plate and inward.

According to the present disclosure, the end surface of the diffuser plate facing the scattering plate is inclined from the irradiation target side toward the scattering plate and inward. Therefore, it is difficult to visually recognize the end face of the diffuser plate from the irradiation target side. Further, there is no need to separately prepare a mold or the like. Therefore, it is possible to reduce manufacturing costs while achieving high design quality.

1 is an exploded perspective view showing a lighting fixture according to Embodiment 1. FIG. 1 is a perspective view showing a light source unit according to Embodiment 1. FIG. 1 is a side view showing a light source unit of a lighting fixture according to Embodiment 1. FIG. FIG. 3 is a schematic diagram showing the shape of a diffuser plate of the lighting fixture according to Embodiment 1. FIG. FIG. 2 is a schematic diagram showing the shape of a conventional lighting fixture. FIG. 2 is a schematic diagram showing the shape of a conventional lighting fixture. FIG. 3 is a schematic diagram showing the shape of a diffuser plate of a lighting fixture according to Embodiment 2. FIG.

Hereinafter, embodiments of a lighting fixture according to the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the following embodiments, and can be variously modified without departing from the gist of the present disclosure. Furthermore, the present disclosure includes all combinations of configurations that can be combined among the configurations shown in the following embodiments. Furthermore, in each figure, the same reference numerals are the same or equivalent, and this is common throughout the entire specification. In addition, in the entire specification, the direction from the floor surface to the ceiling will be referred to as the "upward direction", and the ceiling side will be referred to as the "upper side". Similarly, the vertical direction from the ceiling to the floor will be referred to as the "downward direction," and the floor side will be referred to as the "lower side." Furthermore, in each component, the opening side provided in the center of the lighting fixture 1 will be referred to as the "inside", and the outside side of the lighting fixture 1 will be referred to as the "outside". Note that in each drawing, the relative dimensional relationship or shape of each component may differ from the actual one.

Embodiment 1.
FIG. 1 is an exploded perspective view showing a lighting fixture 1 according to the first embodiment. As shown in FIG. 1, a lighting fixture 1 is attached to an attached part (not shown) such as a ceiling or a wall, and emits light. An embedding hole (not shown) into which the lighting fixture 1 is embedded is formed in the mounting portion. The mounted part is provided with a plurality of hanging bolts (not shown) for attaching the lighting fixture 1, and electric wires (not shown) and signal lines (not shown) are extended through the mounted part. There is. The power line supplies power, and the signal line transmits control signals. In the first embodiment, a case is illustrated in which the lighting fixture 1 simulates a sunny area and a shaded area. The lighting fixture 1 includes a fixture body 2 and a light source unit 3.

The lighting fixture 1 according to the first embodiment includes a first light emitting section 61 that emits blue light that is the first light from the bottom surface that is the exit surface of the scattering plate 70 (see FIG. 3). The lighting fixture 1 also includes a second light emitting section 62 that emits white light, which is second light, from the light emitting surface of the diffuser plate 80 arranged in a direction intersecting the light emitting surface of the scattering plate 70. (See Figure 3). The light emitting surface of the diffusion plate 80 is provided in three directions so as to form a U-shape.

Therefore, the light emitting surface of the diffusion plate 80 emits white light from the three directions, and the blue light is emitted from the entire lower surface of the scattering plate 70. The intensity of the blue light is configured to be lower than the intensity of the white light. With this configuration, the lighting fixture 1 according to the first embodiment produces a visual effect with a sense of depth, as if looking at the blue sky through a window frame. Further, by interposing a light shielding portion between the light emitting surface of the scattering plate 70 of the first light emitting section 61 and the diffusing plate 80, it is possible to prevent light from entering the diffusing plate 80 from the light emitting surface of the scattering plate 70. There is. This suppresses the deterioration of the above-mentioned visual effect.

As shown in FIG. 1, the fixture main body 2 of the lighting fixture 1 is formed in the shape of a rectangular parallelepiped box, and is open at the bottom. The light source unit 3 is arranged inside the opening of the instrument body 2. The instrument main body 2 has a main surface 21 and four side surfaces 22, as shown in FIG. The main surface 21 is formed into a square plate shape. Moreover, each of the side surfaces 22 is formed into an elongated rectangular plate shape. Each of the side surfaces 22 is provided so as to extend downward from each of the four sides of the main surface 21 in a direction perpendicular to the main surface 21 .

Moreover, V-spring fittings (not shown) are attached to the inner surfaces of two opposing side surfaces 22 among the four side surfaces 22 of the instrument main body 2. The V spring attachment fitting hooks and holds a V spring 51, which will be described later, provided on the light source unit 3.

Further, as shown in FIG. 1, bolt holes 23 are formed at both end portions of the main surface 21. Further, a hanging bolt (not shown) is suspended from the embedded hole of the attached part. The instrument main body 2 is fixed to the attached part by inserting a hanging bolt into the bolt hole 23 and tightening the hanging bolt with a nut.

Further, the main surface 21 is provided with a wire hole 24 and a terminal block (not shown). The terminal block includes a power terminal block and a signal line terminal block. In FIG. 1, illustration of a power terminal block and a signal line terminal block is omitted. An electric wire and a signal line are pulled out from the electric wire hole 24. The electric wire pulled out from the electric wire hole 24 is electrically connected to the power terminal block of the terminal block. Further, the signal line drawn out from the wire hole 24 is electrically connected to the signal line terminal block of the terminal block.

FIG. 2 is a perspective view showing the light source unit 3 according to the first embodiment. As shown in FIG. 2, the light source unit 3 has a rectangular shape and is attached to the instrument main body 2, and emits light. The light source unit 3 has a first light emitting section 61 and a second light emitting section 62. More specifically, the light source unit 3 includes a lighting device 30, a frame 40, a decorative frame 50, a V spring 51, a first light emitting section 61, a second light emitting section 62, and a scattering plate 70. , and a diffusion plate 80. The light source unit 3 is suspended and attached to the appliance main body 2 when the V spring 51 engages with the V spring fitting. Note that when the lighting fixture 1 is attached to the embedded hole in the ceiling, the decorative frame 50 covers the edge of the embedded hole. Therefore, when the lighting fixture 1 is installed in the hole in the ceiling, the hole cannot be seen by the occupants of the room where the lighting fixture 1 is installed.

(Lighting device 30)
The lighting device 30 supplies power to each of the first light emitting section 61 and the second light emitting section 62. The lighting device 30 has an elongated shape and is attached to the frame 40. The lighting device 30 supplies power to each of the first light emitting section 61 and the second light emitting section 62. The lighting device 30 dims each LED provided in each of the first light emitting section 61 and the second light emitting section 62.

The lighting device 30 may be provided independently for each color of the LED. Specifically, for example, three lighting devices 30 may be allocated to each of the blue LED, white LED, and green LED of the first light emitting section 61. Further, two lighting devices 30 are assigned to each of the daytime color LED and the warm color LED of the second light emitting section 62 . In that case, the number of lighting devices 30 is five. Alternatively, one lighting device 30 may be assigned to the white LED and the green LED of the first light emitting section 61, and the white LED and the green LED may be dimmed together. In that case, the number of lighting devices 30 is four.

(Frame 40)
The frame 40 is a square and frame-shaped member when viewed from above, and holds the first light emitting section 61 .

(cosmetic frame 50)
The decorative frame 50 is a square-shaped and frame-shaped member when viewed from above. The decorative frame 50 is arranged so as to protrude horizontally outward from inside the opening of the instrument main body 2. The decorative frame 50 is made of metal, for example.

(V spring 51)
The V spring 51 is attached to the side of the decorative frame 50. A total of four V-springs 51 are provided, corresponding to the positions of the V-spring fittings on the instrument main body 2. The V spring 51 is a wire spring formed by bending a metal wire into a V shape.

(First light emitting section 61)
FIG. 3 is a side view showing the light source unit 3 of the lighting fixture 1 according to the first embodiment. As shown in FIG. 3, the first light emitting section 61 is held by the frame 40, and the light emitted from the first light emitting section 61 travels horizontally inward from the frame 40. The first light emitting section 61 has two plate-shaped substrates. The first light emitting section 61 is arranged parallel to two opposing end surfaces extending in the longitudinal direction of the scattering plate 70 . Further, the first light emitting section 61 includes a plurality of LEDs arranged on the substrates. The plurality of LEDs include, for example, a blue LED, a white LED, and a green LED. The blue LED, white LED, and green LED provided in the first light emitting section 61 are dimmed by the lighting device 30.

In this manner, by controlling the light of each LED by the lighting device 30, it is possible to make the light emitted by the first light emitting section 61 blue as a whole, and to change the tone of the blue light. Thereby, the lighting fixture 1 can produce various visual effects imitating the blue sky. The lighting device 30 may be provided independently for each color of LED. Alternatively, the white LED and the green LED may be dimmed together by the lighting device 30. In that case, the number of lighting devices 30 can be reduced. Further, the color tone of the blue light may be changed according to the time. Specifically, for example, the light may be dimmed so that it is bright blue during the daytime hours from 8:00 a.m. to 5:00 p.m., and dark blue at other times. . In this way, the first light emitting section 61 is an optical module having a light source. The light source is not limited to LEDs, and other light emitting elements or light emitting devices may be used.

The two substrates of the first light emitting section 61 are arranged to face two end surfaces of the scattering plate 70 extending in the longitudinal direction, respectively. The light emitted from the first light emitting section 61 is incident on the end face of the scattering plate 70 and travels through the scattering plate 70 while being totally reflected by the upper and lower surfaces of the scattering plate 70 . A part of the light traveling through the scattering plate 70 is scattered when it hits a scatterer inside the scattering plate 70. Blue light, which is the first light, is emitted from the bottom surface, which is the emission surface, of the scattering plate 70 .

(Second light emitting section 62)
As shown in FIG. 3, the second light emitting section 62 is held by the decorative frame 50, and the light emitted from the second light emitting section 62 travels horizontally inward from the decorative frame 50. The second light emitting section 62 is provided in a U-shape when viewed from above. That is, the second light emitting section 62 is configured to form three sides of a rectangle. The second light emitting section 62 includes three plate-shaped substrates and a white LED provided on each of the three substrates. The angle between adjacent substrates is 90°. In this way, the second light emitting section 62 is an optical module having a light source. The light source is not limited to LEDs, and other light emitting elements or light emitting devices may be used. The second light emitting section 62 emits white light inward from white LEDs provided on each of the three substrates. In this way, the second light emitting section 62 emits white light from three directions forming a U-shape. The second light emitting section 62 is arranged inside the frame 40 and is held by the frame 40.

(Scatter plate 70)
The scattering plate 70 is formed into a plate shape. The scattering plate 70 is formed into a square shape when viewed from above. The scattering plate 70 transmits the light emitted from the first light emitting section 61 and emits blue light from its lower surface, which is an emitting surface. Further, the scattering plate 70 includes a scatterer, which is a particle that scatters light, inside. The scattering plate 70 is made of acrylic resin. The scattering plate 70 contains, for example, silica as a scatterer.

The upper surface of the scattering plate 70 is smooth for total reflection. It is desirable that the upper surface of the scattering plate 70 has a mirror finish. If the upper surface of the scattering plate 70 is scratched during the assembly work of the lighting fixture 1, total reflection is less likely to occur at the scratched location. As a result, a portion of the bottom surface corresponding to the scratched portion of the top surface will appear whitish and shiny, and there is a risk that it will not be possible to create a blue sky. Therefore, in order to prevent the top surface of the scattering plate 70 from being damaged, the top surface of the scattering plate 70 may be covered with a reflective sheet.

Here, when covering the upper surface of the scattering plate 70 with a reflective sheet, if the reflective sheet is attached without leaving a gap between the upper surface of the scattering plate 70 and the reflective sheet, total reflection is less likely to occur on the upper surface of the scattering plate 70. In order to ensure total reflection of the light on the upper surface of the scattering plate 70, an air layer is required between the scattering plate 70 and the reflective sheet. In order to form an air layer, the reflective surface of the reflective sheet facing the upper surface of the scattering plate 70 is matted. Matte processing is a process that forms fine irregularities on frosted glass. By matting the reflective surface of the reflective sheet, an air layer can be provided between the scattering plate 70 and the reflective sheet. Further, an adhesive portion may be provided at the edge of the reflective sheet for the purpose of fixing the reflective sheet to the scattering plate 70.

Note that the first light emitting section 61 and the scattering plate 70 constitute a first optical member that emits blue light, which is the first light, from the output surface.

(Diffusion plate 80)
The diffusion plate 80 is formed into a square and frame shape when viewed from above. The diffusion plate 80 is made of, for example, a white resin such as milky white. The diffusion plate 80 is formed into a truncated quadrangular pyramid with an open top and bottom. Therefore, each of the four side surfaces of the diffuser plate 80 is inclined at a predetermined angle with respect to the vertical direction. Each of the four side surfaces of the diffuser plate 80 is configured of a trapezoidal diffuser plate 80, and the length of the upper side is shorter than the length of the lower side. Moreover, since each of the four side surfaces of the diffuser plate 80 is inclined, the upper side is arranged inwardly than the lower side in plan view. Thereby, the internal space of the diffusion plate 80 becomes larger in a tapered manner downward. As described above, the diffusion plate 80 is formed by combining four trapezoidal diffusion plates 80. However, the formation method is not limited to this, and the diffusion plate 80 may be formed by integral molding.

Three of the four side surfaces of the diffuser plate 80 are light-emitting surfaces, and the other surface is a non-light-emitting surface. The three light-emitting surfaces are arranged in a U-shape to match the U-shaped second light-emitting section 62.

Here, in each of the four side surfaces of the diffuser plate 80, the inner surface facing the internal space of the diffuser plate 80 will be referred to as the front surface, and the outer surface will be referred to as the rear surface.

Diffusion plate 80 is arranged inside second light emitting section 62 . Therefore, the second light emitting sections 62 are arranged on the back side of each of the light emitting surfaces of the diffusion plate 80. The white light emitted from the second light emitting section 62 enters from the back surface of the light emitting surface of the diffuser plate 80, passes through the light emitting surface, and is emitted from the front surface of the light emitting surface. Since each of the light emitting surfaces is inclined, the white light emitted from the front surface of the three light emitting surfaces irradiates diagonally downward.

A light-shielding sheet is attached to the back surface of the non-light-emitting surface of the diffusion plate 80 to prevent light from leaking from the non-light-emitting surface. The light shielding sheet is omitted from illustration.

In this way, the diffuser plate 80 has a configuration in which three light-emitting surfaces that emit white light and one non-light-emitting surface that does not emit light are combined. Therefore, the light emitted from the diffuser plate 80 comes from three directions, so it looks like light from outside is shining through the window frame in the sun or the window frame in the shade. It is possible to create a visual effect with a sense of depth.

Note that the diffuser plate 80 and the second light emitting section 62 constitute a second optical member that emits white light, which is the second light, from the light emitting surface. Since the light emitted from the diffuser plate 80 is surface emitted, it becomes diffused light and becomes soft light.

The lighting fixture 1 can be used to illuminate the diagonally downward direction of the light emitting surface with white light emitted from the light emitting surface. Note that the blue light emitted from the scattering plate 70 is used for illumination to create a visual effect similar to seeing a blue sky, and when used for illumination, the luminous flux is insufficient. On the other hand, the light emitted from the light emitting surface satisfies the luminous flux when used for illumination. In this way, the light intensity of the white light emitted from the light emitting surface is different from the light intensity of the blue light emitted from the light emitting surface of the scattering plate 70, and the light intensity of the white light is higher than the light intensity of the blue light. is also strong.

Note that the white light emitted from the light emitting surface does not have to have a single color temperature. That is, specifically, the second light emitting section 62 may include two types of white LEDs having different color temperatures. In this way, the second light emitting section 62 may include only one type of white LED as the white LED, or may include two types of white LEDs, a daytime white LED and a warm white LED. may be provided. When the second light emitting unit 62 includes two types of white LEDs, by changing the dimming rate of the two types of white LEDs, white light of various color temperatures and various luminous fluxes is emitted from the light emitting surface. can do.

Further, depending on the time, the white LED for daytime color and the white LED for warm color may be switched and used. Specifically, for example, daytime white LEDs may be used during daytime hours from 8:00 a.m. to 5:00 p.m., and warm white LEDs may be used at other times. good. Note that these time slots are just examples, and are not limited to these, and may be set as appropriate.

Note that the light distribution of the white LED used in the second light emitting section 62 is of a wide-angle type. By using a wide-angle type LED for the second light emitting section 62, even if the inclination angle of the diffuser plate 80 is changed, the luminous intensity of the light emitted from the diffuser plate 80 can be made difficult to change. Therefore, the same type of second light emitting section 62 can be used for the diffuser plates 80 having different inclination angles.

FIG. 4 is a schematic diagram showing the shape of the diffusion plate 80 of the lighting fixture 1 according to the first embodiment. Next, the shape of the diffuser plate 80 will be explained in more detail. As shown in FIG. 4, the diffusion plate 80 has a facing portion 81 and an inclined portion 82. As shown in FIG. The opposing portion 81 faces the scattering plate 70 and extends along the scattering plate 70. The facing portion 81 is necessary when sealing the boundary portion to prevent dust, insects, etc. from entering the inside of the instrument body 2. The inclined portion 82 is inclined from the facing portion 81 toward the irradiation target side and the decorative frame 50 side. Here, the end surface 81a of the diffusion plate 80 facing the scattering plate 70 is inclined from the irradiation target side toward the scattering plate 70 and inward. Here, the irradiation target side refers to the floor side of the room when the lighting fixture 1 is attached to the ceiling of the room. Further, the end surface 81a of the diffusion plate 80 is inclined toward the center of the lighting fixture 1 with respect to the direction extending perpendicularly from the floor of the room. The light emitted from the second light emitting section 62 is guided along the inclined section 82 of the diffuser plate 80 and reaches the opposing section 81 . The light that has reached the opposing portion 81 is guided along the opposing portion 81 to the end surface 81a. In the first embodiment, the end surface 81a of the diffuser plate 80 is inclined from the irradiation target side toward the scatterer plate 70 and inward, so that residents of the room where the lighting fixture 1 is installed cannot see the lighting fixture 1. Sometimes, the end surface 81a of the diffuser plate 80 is difficult to see. Therefore, the light guided to the end face 81a is difficult to enter the resident's field of view. Note that the inclination angle θ is appropriately set within a range greater than 0° and smaller than 90°. If the inclination angle θ is excessively large, workability deteriorates, so it is necessary to increase the length of the facing portion 81. On the other hand, if the inclination angle θ is too small, it will enter the resident's field of view.

According to the first embodiment, the end surface 81a of the diffusion plate 80 facing the scattering plate 70 is inclined from the irradiation target side toward the scattering plate 70 and inward. Therefore, it is difficult to visually recognize the end surface 81a of the diffuser plate 80 from the irradiation target side. Further, there is no need to separately prepare a mold or the like. Therefore, it is possible to reduce manufacturing costs while achieving high design quality. Moreover, since the lighting fixture 1 can be downsized, the design is improved.

FIG. 5 is a schematic diagram showing the shape of a conventional lighting fixture. Next, conventional lighting equipment will be explained. The light emitted from the second light emitting section 62 is guided along the inclined section 82 of the diffuser plate 80 and reaches the opposing section 81 . The light that has reached the opposing portion 81 is guided along the opposing portion 81 to the end surface 81a. The guided light gathers on the end face 81a and its brightness increases. In the conventional lighting fixture 1, as shown in FIG. 5, the end face 81a of the diffuser plate 80 extends in the vertical direction, so when a resident tries to look at the lighting fixture 1, the end face 81a of the diffuser plate 80, which has high brightness, come into view. Therefore, the design quality is impaired.

FIG. 6 is a schematic diagram showing the shape of a conventional lighting fixture. In order to avoid seeing that the flat part of the diffuser plate 80 is emitting light when the lighting equipment is viewed from the irradiation target side, for example, the flat part of the diffuser plate 80 is It is conceivable to fold back in the direction of inclination. However, when manufacturing the diffusion plate 80 by bonding two acrylic plates together, the manufacturing process is time-consuming and there is a risk that the adhesive strength may be insufficient. In order to solve this problem, a method of forming the diffuser plate 80 in a vacuum may be considered, but since the boundary between the scattering plate 70 and the diffuser plate 80 becomes an undercut, the shape is restricted. This makes it difficult to fold back the flat portion of the diffuser plate 80 in the direction of inclination. If this were to be realized, the structure of the mold used for injection molding would be complicated, increasing the cost of the mold.

In contrast, in the first embodiment, the end surface 81a of the diffusion plate 80 facing the scattering plate 70 is inclined from the irradiation target side toward the scattering plate 70 and inward. Therefore, it is difficult to visually recognize the end surface 81a of the diffuser plate 80 from the irradiation target side. Further, there is no need to separately prepare a mold or the like. Therefore, it is possible to reduce manufacturing costs while achieving high design quality. Note that the molding method is not limited to vacuum molding, and may be formed by any molding method that makes two-color molding difficult.

Embodiment 2.
FIG. 7 is a schematic diagram showing the shape of the diffusion plate 80 of the lighting fixture 1 according to the second embodiment. The second embodiment differs from the first embodiment in that a diffusion plate 80 facing the scattering plate 70 is subjected to an opaque treatment. In the second embodiment, parts common to those in the first embodiment are given the same reference numerals and explanations are omitted, and differences from the first embodiment will be mainly explained.

As shown in FIG. 7, the facing portion 81 of the diffuser plate 80 is subjected to an opaque treatment. Here, opaque means not transmitting light. Specifically, the diffusion plate 80 is coated with an opaque coating 90. Thereby, the light emitted from the first light emitting section 61 and the light emitted from the second light emitting section 62 are not mixed. Therefore, mixing of the respective light colors can be suppressed. Note that instead of applying the impermeable coating 90, an impermeable tape may be applied to the diffuser plate 80.

If the diffuser plate 80 is integrally molded, both the inclined part 82 and the opposing part 81 will be made of the same color material, such as milky white. Therefore, at the boundary between the scattering plate 70 and the facing section 81, the blue light from the first light emitting section 61 and the white light from the second light emitting section 62 are mixed. Here, if an opaque part is adhered to the boundary portion or insert molding is performed, the manufacturing process and mold costs will increase, leading to an increase in cost. On the other hand, in the second embodiment, since the opposing part 81 of the diffuser plate 80 is subjected to an opaque treatment, the light emitted from the first light emitting part 61 and the light emitted from the second light emitting part 62 are separated. It does not mix with light. Therefore, mixing of the respective light colors can be suppressed.

1 lighting fixture, 2 fixture body, 3 light source unit, 21 main surface, 22 side surface, 23 bolt hole, 24 wire hole, 30 lighting device, 40 frame, 50 decorative frame, 51 V spring, 61 first light emitting part, 62 2nd light emitting part, 70 scattering plate, 80 diffusion plate, 81 opposing part, 81a end face, 82 inclined part, 90 painting.

Claims (3)

A device body that is attached to the attached part,
a light source unit attached to the instrument body and having a first light emitting part that emits the first light and a second light emitting part that emits the second light;
The light source unit is
a frame holding the first light emitting section;
a decorative frame that supports the frame and holds the second light emitting section;
a scattering plate that is provided to extend in one direction with respect to the frame and guides the light emitted from the first light emitting section;
a diffuser plate that is provided to be inclined from the scatterer plate toward the decorative frame and guides the light emitted from the second light emitting section;
An end surface of the diffusion plate facing the scattering plate is inclined from the irradiation target side toward the scattering plate and inside. The diffusion plate has a frame shape,
The lighting device according to claim 1, wherein the lighting device extends so as to expand as it moves away from the scattering plate. The diffusion plate is
a facing portion facing the scattering plate;
a sloped part that slopes from the facing part toward the irradiation target side,
The lighting fixture according to claim 1 or 2, wherein the opposing part and the inclined part are integrated.

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