Lighting system, lighting fixture, and lighting control system

Abstract

To provide a lighting system high in relaxation effect and sleep induction effect.SOLUTION: A lighting system 100 includes: a chair 2 having a backrest 21; and a lighting fixture 1 having a light emitting part 11. The light emitting part 11 of the lighting fixture 1 is disposed at a position outside of a first area R1 including, as an outer edge, each of a half line LA1 extending to the front side of the backrest 21 from a top end center 211 of the backrest 21, as a reference point, and extending to a direction forming 8° upward with respect to a first direction D1 as a normal direction of the backrest 21 at the reference point 211 from the reference point 211, a half line LA2 extending to a direction forming 12°downward with respect to the first direction D1 from the reference point 211, a half line extending to a direction forming 15°rightward with respect to the first direction D1 from the reference point 211, and a half line extending to a direction forming 15°leftward with respect to the first direction D1 from the reference point 211. A distance between the light emitting part 11 of the lighting fixture 1 and the reference point 211 is 500 mm or more.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a lighting system, a lighting fixture, and a lighting control system, and in particular to a lighting system including a chair, and a lighting fixture and a lighting control system used in the lighting system. [Background technology]

[0002] Patent Document 1 discloses a vehicle lighting device (lighting equipment) used in a vehicle having seats (chairs). The vehicle lighting device disclosed in Patent Document 1 is equipped with sleep-inducing lighting. In the vehicle lighting device of Patent Document 1, the sleep-inducing lighting is disposed under the vehicle and to the side of the seats. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-20559 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the vehicle lighting device disclosed in Patent Document 1, depending on the positional relationship between the vehicle lighting device and the seat, particularly the vertical positional relationship, and the brightness of the vehicle lighting device, the sleep-inducing effect may not be sufficient.

[0005] The present disclosure aims to provide a lighting system, a lighting device, and a lighting control system that can enhance the relaxation effect and sleep-inducing effect. [Means for solving the problem]

[0006] A lighting system according to an embodiment of the present disclosure includes a chair having a backrest and a lighting device having a light-emitting unit. When the angle of the backrest of the chair is a predetermined angle, the light-emitting unit of the lighting device is disposed at a position outside a first region including, as outer edges, a half line extending from the reference point in a direction that forms an 8° upward angle with respect to a first direction that is a normal direction of the backrest at the reference point, a half line extending from the reference point in a direction that forms an 12° downward angle with respect to the first direction, a half line extending from the reference point in a direction that forms an 15° rightward angle with respect to the first direction, and a half line extending from the reference point in a direction that forms an 15° leftward angle with respect to the first direction. When the angle of the backrest of the chair is a predetermined angle, the distance between the light-emitting unit of the lighting device and the reference point is 500 mm or more.

[0007] A lighting device according to an embodiment of the present disclosure is used in a lighting system including a chair having a backrest. The lighting device includes a light-emitting unit. When the angle of the backrest of the chair is a predetermined angle, the light-emitting unit of the lighting device is disposed at a position outside a first region including, as outer edges, a half line extending from the reference point in a direction that forms 8° upward with respect to a first direction that is a normal direction of the backrest at the reference point, a half line extending from the reference point in a direction that forms 12° downward with respect to the first direction, a half line extending from the reference point in a direction that forms 15° right with respect to the first direction, and a half line extending from the reference point in a direction that forms 15° left with respect to the first direction. When the angle of the backrest of the chair is a predetermined angle, the distance between the lighting device and the reference point is 500 mm or more.

[0008] A lighting control system according to one aspect of the present disclosure includes the lighting device and a control device that controls the lighting device. Effect of the Invention

[0009] The lighting system, lighting device, and lighting control system according to an embodiment of the present disclosure provide a high relaxation effect and sleep-inducing effect. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic side view showing the configuration of a lighting system according to a first embodiment. [Diagram 2] FIG. 2 is a schematic diagram showing the relationship between the area included in a person's visual field and the center of the visual field. [Diagram 3] FIG. 3 is a schematic side view showing another state of the configuration of the lighting system of the above. [Figure 4] FIG. 4 is an example of a user's visual field area in the above lighting system. [Diagram 5] FIG. 5 is a block diagram showing a configuration of a lighting control system according to the second embodiment. [Figure 6] FIG. 6 is a schematic diagram showing the relationship between the light source of a lighting fixture and the center of the visual field in a lighting system according to the third embodiment. [Figure 7] FIG. 7 is a schematic side view showing the configuration of a lighting system according to the fourth embodiment. [Figure 8] FIG. 8 is a schematic side view showing the configuration of a lighting system according to the fifth embodiment. [Figure 9] FIG. 9 is a schematic side view showing the configuration of a lighting system according to the sixth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, lighting fixtures according to the first to sixth embodiments and their modifications will be described with reference to the drawings. Note that the drawings referred to in the following first to sixth embodiments and their modifications are all schematic drawings, and the ratios of sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensional ratios.

[0012] (Embodiment 1) 1. Overall configuration of the lighting system The lighting system 100 according to the first embodiment includes a lighting fixture 1 and a chair 2, as shown in FIG.

[0013] Chair 2 is installed in a space where a user can take a nap, for example. The space is, for example, the cabin of a passenger car, a bus, a train car or an airplane cabin, a nap room in a building, etc. The space is used by user P1 naturally sitting in chair 2. Hereinafter, the directions within the space are indicated with respect to chair 2, including up, down, right, left, front, and rear.

[0014] The chair 2 includes a backrest 21 and a seat surface 22. The center line of the visual field (hereinafter referred to as the "line of sight") of a user P1 naturally seated in the chair 2 facing forward is located on a half line A0 extending forward from a position 211 (hereinafter referred to as the "upper end center of the backrest 21") at the upper end of the backrest 21. Here, the half line A0 extends from the upper end center 211 of the backrest 21 in a normal direction D1 of the backrest 21 at the upper end center 211 of the backrest 21 (hereinafter referred to as the "first direction").

[0015] The chair 2 is a so-called reclining seat, in which the orientation of the backrest 21 can be changed. Hereinafter, the angle between the normal direction of the backrest 21 and the normal direction of the seat surface 22 is referred to as the angle a1 of the backrest 21. For example, when the angle a1 of the backrest 21 is 60°, the angle between the normal direction of the backrest 21 and the horizontal direction is 30°, and the chair functions as a chair. When the angle a1 of the backrest 21 is 0°, the normal direction of the backrest 21 and the normal direction of the seat surface 22 are parallel, and the chair functions as a bed. The angle a1 of the backrest 21 corresponds to a predetermined angle, and the predetermined angle is, for example, 60°, 0°, or any angle between 0° and 60°.

[0016] 2. Lighting fixture configuration The lighting device 1 includes a light source 11. The light source 11 includes, for example, a plurality of white LEDs for illumination. The LEDs included in the light source 11 are controlled to be turned on or off. The light source 11 corresponds to a light-emitting unit. The lighting device 1 includes, for example, a control unit that controls the lighting of the light source 11.

[0017] 3. Relationship between chairs and lighting fixtures The relationship between the chair and the lighting fixture will be described in detail below.

[0018] (1) View from the chair FIG. 2 is a diagram showing a visual field of a person. The visual field of a person includes an effective visual field R1, an induced visual field R2, and an auxiliary visual field R3. Each of the effective visual field R1, the induced visual field R2, and the auxiliary visual field R3 is a three-dimensional area, but the end face of each area, whose normal direction is the direction in which the line of sight (hereinafter referred to as the "line of sight direction"), is a similar shape that expands in proportion to the distance between the end face and the position of the eye. Therefore, hereinafter, each of the effective visual field R1, the induced visual field R2, and the auxiliary visual field R3 will be described based on the end face shown in FIG. 2.

[0019] In Fig. 2, the left-right direction is a direction based on the user P1 sitting naturally on the chair 2, and is perpendicular to the first direction D1. The up-down direction is a direction based on the user P1 sitting naturally on the chair 2, and is perpendicular to the left-right direction and perpendicular to the center line of the user P1's line of sight. That is, in Fig. 2, the up-down direction (hereinafter also referred to as the "second direction D2") is perpendicular to the left-right direction and perpendicular to the first direction D1. Therefore, if the first direction D1 does not coincide with the horizontal direction, the second direction D2 (see Fig. 1) does not coincide with the vertical direction.

[0020] In the human visual field, the effective visual field R1 is the range in which information can be received with high efficiency, and when an object to be focused on is present within the effective visual field R1, the line of sight moves instantaneously to that object. The end face of the effective visual field R1, with the line of sight as the normal direction, includes the ellipse e1 shown in Figure 2 and its inside. The effective visual field R1 is an elliptical cone whose apex is the position of the eyes and whose height direction is the line of sight.

[0021] The outer edge of the visual field R1 includes a half line (half line LA1 in FIG. 1) that extends from the eye position in a direction that forms 8° upward with respect to the line of sight. The outer edge of the visual field R1 also includes a half line (half line LA2 in FIG. 1) that extends from the eye position in a direction that forms 12° downward with respect to the line of sight. The outer edge of the visual field R1 also includes a half line that extends from the eye position in a direction that forms 15° to the right with respect to the line of sight, and a half line that extends from the eye position in a direction that forms 15° to the left with respect to the line of sight.

[0022] The induced visual field R2 is the range that causes a sense of realism, and the induced effect is generated by visual information. The end face of the effective visual field R1, whose normal direction is the line of sight, is the ellipse e2 shown in Figure 2, and the inside of the ellipse e2 and the outside of the ellipse e1. The induced visual field R2 is a shape that excludes the effective visual field R1 from an elliptical cone whose apex is the eye position and whose height direction is the line of sight.

[0023] The outer edge of the induced visual field R2 includes a half line (half line LB1 in FIG. 1) extending from the eye position in a direction that forms 35° upward with respect to the line of sight. The outer edge of the induced visual field R2 also includes a half line (half line LB2 in FIG. 1) extending from the eye position in a direction that forms 50° downward with respect to the line of sight. The outer edge of the induced visual field R2 also includes a half line extending from the eye position in a direction that forms 50° to the right with respect to the line of sight, and a half line extending from the eye position in a direction that forms 50° to the left with respect to the line of sight. The inner edge of the induced visual field R2 is in contact with the outer edge of the effective visual field R1.

[0024] The auxiliary visual field R3 is the range in which simple visual information can be detected and received. The end face of the auxiliary visual field R3, whose normal direction is the line of sight, is the ellipse e3 and its interior, and the outside of the ellipse e2 shown in Figure 2. The auxiliary visual field R3 is a shape that excludes the effective visual field R1 and the induced visual field R2 from an elliptical cone whose apex is the eye position and whose height direction is the line of sight.

[0025] The outer edge of the auxiliary visual field R3 includes a half line (half line LC1 in FIG. 1) extending from the eye position in a direction that forms 50° upward with respect to the line of sight. The outer edge of the induced visual field R2 includes a half line (half line LC2 in FIG. 1) extending from the eye position in a direction that forms 75° downward with respect to the line of sight. The outer edge of the induced visual field R2 includes a half line extending from the eye position in a direction that forms 100° to the right with respect to the line of sight, and a half line extending from the eye position in a direction that forms 100° to the left with respect to the line of sight. The inner edge of the auxiliary visual field R3 is in contact with the outer edge of the induced visual field R2.

[0026] Therefore, in order for lighting fixture 1 to exert a relaxing effect and a sleep-inducing effect, it is preferable that light source 11 of lighting fixture 1 is located outside effective visual field R1. If light source 11 of lighting fixture 1 is located within effective visual field R1, user P1 who is naturally seated in chair 2 will receive light emitted from light source 11 with high performance, which may disturb the sleep of user P1. In other words, light source 11 of lighting fixture 1 is preferably located outside effective visual field R1 and within induced visual field R2.

[0027] Furthermore, when light source 11 of lighting device 1 is located in auxiliary visual field R3, user P1, who is naturally seated in chair 2, receives the light emitted from light source 11 as simple visual information, and does not receive advanced information. This allows lighting device 1 to exert a relaxing effect and a sleep-inducing effect on user P1. In other words, it is more preferable that light source 11 of lighting device 1 is located outside induced visual field R2 and inside auxiliary visual field R3.

[0028] (2) Relative position of chair and lighting fixture Fig. 1 is a schematic diagram showing the positional relationship between a chair 2 and a light source 11 of a lighting fixture 1 as viewed from the left and right in a plan view. In Fig. 1, the angle of the backrest 21 of the chair 2 is 60°.

[0029] As shown in FIG. 1, when a user P1 is naturally seated in a chair 2 and looking straight ahead, the line of sight of the user P1 is on a half line A0 extending forward from the upper end center 211 of the backrest 21.

[0030] The distance between the eyes of the user P1 and the light source 11 of the lighting device 1 is 500 mm or more. That is, the distance d1 between the light source 11 of the lighting device 1 and the upper center 211 of the backrest 21 is 500 mm or more.

[0031] In addition, the optical axis of the light emitted from light source 11 of lighting fixture 1 does not pass through a sphere with a radius of 250 mm centered at the upper end center 211 of the backrest 21. This prevents the light emitted from light source 11 of lighting fixture 1 from directly reaching the eyes of user P1. Note that the optical axis of the light emitted from light source 11 of lighting fixture 1 does not pass through a sphere with a radius of 250 mm centered at the upper end center 211 of the backrest 21 includes the case where the light emitted from light source 11 of lighting fixture 1 is diffuse light that does not have an optical axis.

[0032] Furthermore, the light source 11 of the lighting device 1 is located outside the effective visual field R1. In the lighting system 100 according to the first embodiment, the upper center 211 of the backrest 21 is regarded as the position of the eyes of the user P1, and the light source 11 is disposed outside the effective visual field R1. In other words, the upper center 211 of the backrest 21 corresponds to the reference point.

[0033] 1, the light source 11 of the lighting device 1 is located below the half line LA2 that extends forward from the upper end center 211 of the backrest 21 and extends in a direction that forms 12° downward with respect to the half line A0. Here, the effective visual field R1 is located between the half line LA1 that extends forward from the upper end center 211 of the backrest 21 and extends in a direction that forms 8° upward with respect to the half line A0, and the half line LA2. More specifically, the outer edge of the effective visual field R1 includes, in addition to the above-mentioned half lines LA1 and LA2, a half line that extends forward from the upper end center 211 of the backrest 21 and extends in a direction that forms 15° to the right with respect to the half line A0, and a half line that extends forward from the upper end center 211 of the backrest 21 and extends in a direction that forms 15° to the left with respect to the half line A0. As a result, as described above, the user P1, who is naturally seated in the chair 2, is prevented from receiving light emitted from the light source 11 with high efficiency, and the lighting device 1 can exert a relaxing effect and a sleep-inducing effect on the user P1.

[0034] As shown in FIG. 1, the light source 11 of the lighting device 1 is preferably outside the induction field R2. Here, the induction field R2 is located between a half line LB1 extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 35° upward with respect to the half line A0, and a half line LB2 extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 50° downward with respect to the half line A0. More specifically, the outer edge of the induction field R2 includes, in addition to the above-mentioned half lines LB1 and LB2, a half line extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 50° to the right with respect to the half line A0, and a half line extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 50° to the left with respect to the half line A0. This enables the lighting device 1 to exert a relaxation effect and a sleep-inducing effect on the user P1.

[0035] It is preferable that the light source 11 of the lighting device 1 is outside the effective visual field R1 regardless of the angle of the backrest 21 of the chair 2. More specifically, as shown in FIG. 3, even when the angle of the backrest 21 of the chair 2 is 0°, the light source 11 of the lighting device 1 is outside the effective visual field R1. When the angle of the backrest 21 of the chair 2 is 0°, the normal direction (first direction) D1 of the backrest 21 at the upper end center 211 of the backrest 21 is the up-down direction. The line of sight of the user P1 is on a half line A0 extending upward from the upper end center 211 of the backrest 21. Therefore, the ranges of the effective visual field R1, the induced visual field R2, and the auxiliary visual field R3, and the respective positions of the half lines LA1, LA2, LB1, LB2, LC1, and LC2 move to the positions shown in FIG. 3. Light source 11 of lighting device 1 is located outside effective visual field R1 whether the angle of backrest 21 of chair 2 is between 0° and 60°. When the angle of backrest 21 of chair 2 is 0°, distance d2 between light source 11 of lighting device 1 and upper center 211 of backrest 21 is 500 mm or more. Therefore, even if user P1 freely sets the angle of backrest 21 of chair 2, lighting device 1 can provide a relaxing effect and a sleep-inducing effect on user P1.

[0036] Furthermore, it is preferable that light source 11 of lighting device 1 is outside of induced visual field R2 regardless of the angle of backrest 21 of chair 2. More specifically, as shown in Fig. 3, even when the angle of backrest 21 of chair 2 is 0°, light source 11 of lighting device 1 is outside of induced visual field R2. Therefore, light source 11 of lighting device 1 is located outside of induced visual field R2 even when the angle of backrest 21 of chair 2 is between 0° and 60°. Therefore, even if user P1 freely sets the angle of backrest 21 of chair 2, lighting device 1 can provide a relaxing effect and a sleep-inducing effect on user P1.

[0037] In addition, it is preferable that the light source 11 of the lighting device 1 is disposed below the half line A0. This makes it easy to dispose the light source 11 outside the effective visual field R1 or the induced visual field R2, regardless of the angle of the backrest 21 of the chair 2.

[0038] (3) Brightness If the luminance in the visual field of the user P1 is high, there is a risk that sleep may be disturbed. Therefore, it is preferable that the luminance in the visual field of the user P1 satisfies the following condition.

[0039] (3.1) Cases where external light may affect The luminance of the area illuminated by the light source 11 of the lighting fixture 1 is 100 cd / m in the auxiliary visual field R3 (see FIG. 2) when there is an influence of a light source other than the lighting fixture 1. 2The auxiliary visual field R3 is a region excluding the effective visual field R1 and the induced visual field R2 from a truncated cone-shaped region including, as its outer edge, a half line LC1 (see Figs. 1 and 3) extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 50° upward with respect to the half line A0, a half line LC2 (see Figs. 1 and 3) extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 75° downward with respect to the half line A0, a half line extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 100° to the right with respect to the half line A0, and a half line extending forward from the upper end center 211 of the backrest 21 in a direction that forms an angle of 100° to the left with respect to the half line A0. For example, if the chair 2 is a rear seat of a vehicle, the auxiliary field of view R3 includes a lower area R11 of the front seat (see FIG. 4).

[0040] Here, the presence of an influence from a light source other than the lighting device 1 refers to a case where the luminance in the auxiliary visual field R3 is 10 cd / m when the light source 11 of the lighting device 1 is not emitting light. 2 In other words, the auxiliary visual field R3 is illuminated with light from a light source other than the lighting device 1. Therefore, when the luminance in the auxiliary visual field R3 is greater than 100 cd / m 2 The term "equal to or less" means that when both light from the light source 11 of the lighting device 1 and light from a light source other than the lighting device 1 are irradiated, the luminance in the auxiliary visual field R3 is 100 cd / m 2 This means that:

[0041] Therefore, the luminance of the auxiliary visual field R3 in the visual field region of the user P1 illuminated by the light source 11 of the lighting device 1 is sufficiently small, which reduces the possibility that the light emitted by the light source 11 of the lighting device 1 interferes with the relaxation effect and sleep-inducing effect on the user P1.

[0042] (3.2) When there is no effect of external light The luminance of the area illuminated by the light source 11 of the lighting fixture 1 is 50 cd / m in the auxiliary visual field R3 when there is no influence from light sources other than the lighting fixture 1. 2Here, the absence of influence from light sources other than the lighting device 1 refers to a case where the luminance in the auxiliary visual field R3 when the light source 11 of the lighting device 1 is not emitting light is 10 cd / m 2 In this case, the visual field of the user P1 is darker than when the light source 11 of the lighting device 1 is emitting light, so the luminance in the auxiliary visual field R3 is 50 cd / m 2 It is preferable that the above-mentioned condition be satisfied. This makes it possible to reduce the possibility that the light emitted from light source 11 of lighting device 1 interferes with the relaxation effect and sleep-inducing effect on user P1.

[0043] 4.Effects The lighting fixture 1 according to the first embodiment includes a chair 2 having a backrest 21, and a lighting fixture 1 having a light source 11. When the angle of the backrest 21 of the chair 2 is 0° or 60°, the following conditions are satisfied. That is, the light emitting unit 11 of the lighting device 1 is disposed at a position outside the effective visual field R1 including, as outer edges, a half line LA1 extending from the upper end center 211 of the backrest 21 to the front side of the backrest 21, a half line LA2 extending from the upper end center 211 of the backrest 21 in a direction forming 8° upward with respect to a first direction D1 which is the normal direction of the backrest 21, a half line LA2 extending from the upper end center 211 of the backrest 21 in a direction forming 12° downward with respect to the first direction D1, a half line extending from the upper end center 211 of the backrest 21 in a direction forming 15° to the right with respect to the first direction D1, and a half line extending from the upper end center 211 of the backrest 21 in a direction forming 15° to the left with respect to the first direction D1. The distance between the light source 11 of the lighting device 1 and the upper end center 211 of the backrest 21 is 500 mm or more. This reduces the high-performance information reception of light emitted from the light source 11 by the user P1, who is naturally seated in the chair 2, and enables the lighting device 1 to exert a relaxing effect and a sleep-inducing effect on the user P1.

[0044] Furthermore, in the lighting device 1 according to the first embodiment, when the angle of the backrest 21 of the chair 2 is 0° or 60°, the following condition is satisfied: The light-emitting unit 11 of the lighting device 1 is disposed at a position outside the induced visual field R2 that includes, as outer edges, a half line LB1 extending from the upper end center 211 of the backrest 21 to the front side of the backrest 21 and a half line LB2 extending from the upper end center 211 of the backrest 21 in a direction that forms an angle of 35° upward with respect to a first direction D1 that is the normal direction of the backrest 21, a half line LB2 extending from the upper end center 211 of the backrest 21 in a direction that forms an angle of 50° downward with respect to the first direction D1, a half line extending from the upper end center 211 of the backrest 21 in a direction that forms an angle of 50° rightward with respect to the first direction D1, and a half line extending from the upper end center 211 of the backrest 21 in a direction that forms an angle of 50° leftward with respect to the first direction D1. This further reduces the reception of light emitted from the light source 11 by the user P1, who is naturally seated in the chair 2, enabling the lighting fixture 1 to exert a stronger relaxing and sleep-inducing effect on the user P1.

[0045] Furthermore, in the lighting device 1 according to the first embodiment, the light source 11 of the lighting device 1 is disposed below a half line A0 extending in the first direction D1 from the upper end center 211 of the backrest 21. This makes it easy to dispose the light source 11 outside the effective visual field R1 or outside the induced visual field R2 when the backrest 21 of the chair 2 is reclining, regardless of the angle of the backrest 21 of the chair 2.

[0046] In addition, in the lighting device 1 according to the first embodiment, in the auxiliary visual field R3 which is outside the induced visual field R2 and inside a region extending from the upper end center 211 of the backrest 21 to the front side of the backrest 21 and including as outer edges a half line LC1 extending from the upper end center 211 of the backrest 21 in a direction forming 50° upward with respect to the first direction D1, a half line LC2 extending from the upper end center 211 of the backrest 21 in a direction forming 75° downward with respect to the first direction D1, a half line extending from the upper end center 211 of the backrest 21 in a direction forming 100° to the right with respect to the first direction D1, and a half line extending from the upper end center 211 of the backrest 21 in a direction forming 100° to the left with respect to the first direction D1, the luminance is 100 cd / m 2This makes it possible to reduce the possibility that the light emitted by light source 11 of lighting device 1 will interfere with the relaxation and sleep-inducing effects on user P1.

[0047] In addition, in the lighting device 1 according to the first embodiment, the luminance in the auxiliary visual field R3 when the light source 11 of the lighting device 1 is not emitting light is 10 cd / m 2 and the luminance when the light source 11 of the lighting fixture 1 is emitting light is 50 cd / m 2 This makes it possible to reduce the possibility that the light emitted by light source 11 of lighting device 1 will interfere with the relaxation effect and sleep-inducing effect on user P1.

[0048] Furthermore, in the lighting device 1 according to the first embodiment, the optical axis of the light emitted from the light source 11 of the lighting device 1 does not pass through an area with a radius of 250 mm centered on the upper end center 211 of the backrest 21. This prevents the light emitted from the light source 11 of the lighting device 1 from directly reaching the eyes of the user P1.

[0049] (Embodiment 2) 1. Configuration A lighting system 100 according to the second embodiment includes a lighting control system 10. As shown in Fig. 5, the lighting control system 10 includes a lighting fixture 1 and a control device 15. The control device 15 controls the light intensity of light emitted from a light source 11 of the lighting fixture 1.

[0050] In the lighting device 1 according to the second embodiment, the light intensity of the light emitted from the light source 11 of the lighting device 1 changes under the control of the control device 15. More specifically, the light intensity of the light emitted from the light source 11 increases and decreases over time. More specifically, the light intensity of the light emitted from the light source 11 changes, for example, sinusoidally according to a predetermined frequency. The control device 15 stores, for example, a pattern indicating the time-series change in the light intensity of the light emitted from the light source 11, and changes the emission intensity of the light source 11 according to the pattern. Note that the change in the light intensity of the light emitted from the light source 11 may be any mode, regardless of whether it is sinusoidal, as long as it includes a time when the light intensity increases and a time when the light intensity decreases.

[0051] In the lighting device 1 according to the second embodiment, when there is an influence from a light source other than the lighting device 1, the maximum luminance value in the auxiliary visual field R3 is 100 cd / m 2 More specifically, the control device 15 determines that when the light intensity of the light emitted from the light source 11 is at its maximum, the maximum value of the luminance in the auxiliary visual field R3 is 100 cd / m 2 As a result, in the lighting device 1 according to the second embodiment, when there is an influence from a light source other than the lighting device 1, the luminance in the auxiliary visual field R3 is always 100 cd / m 2 As a result, it is possible to reduce the possibility that the light emitted by light source 11 of lighting device 1 will interfere with the sleep-inducing effect on user P1, and to improve the relaxation effect due to the change in light intensity.

[0052] In addition, in the lighting device 1 according to the second embodiment, when there is no influence from light sources other than the lighting device 1, the maximum luminance value in the auxiliary visual field R3 is 50 cd / m 2 More specifically, the control device 15 determines that when the light intensity of the light emitted from the light source 11 is maximum, the maximum value of the luminance in the auxiliary visual field R3 is 50 cd / m 2 As a result, in the lighting device 1 according to the second embodiment, when there is no influence from light sources other than the lighting device 1, the luminance in the auxiliary visual field R3 is always 50 cd / m 2 As a result, it is possible to reduce the possibility that the light emitted by light source 11 of lighting device 1 will interfere with the sleep-inducing effect on user P1, and to improve the relaxation effect due to the change in light intensity.

[0053] 2.Effects In the lighting device 1 according to the second embodiment, the intensity of the light emitted from the light source 11 is changed. In the auxiliary visual field R3, the maximum luminance is 100 cd / m 2This makes it possible to reduce the possibility that the light emitted by light source 11 of lighting device 1 interferes with the sleep-inducing effect on user P1. Also, by changing the light intensity of light source 11, the relaxation effect can be improved.

[0054] Furthermore, in the lighting device 1 according to the second embodiment, the light intensity of the light emitted from the light source 11 is changed. In the auxiliary visual field R3, when the light source 11 of the lighting device 1 is not emitting light, the luminance is 10 cd / m 2 and the maximum luminance when the light source 11 of the lighting device 1 is emitting light is 50 cd / m 2 This makes it possible to reduce the possibility that the light emitted by light source 11 of lighting device 1 interferes with the sleep-inducing effect on user P1. Also, by changing the light intensity of light source 11, the relaxation effect can be improved.

[0055] Moreover, lighting control system 10 according to embodiment 2 includes lighting fixture 1 and control device 15 that controls lighting fixture 1. This makes it possible to control lighting fixture 1 so that light emitted from light source 11 of lighting fixture 1 exerts a relaxing effect and a sleep-inducing effect.

[0056] (Embodiment 3) 1. Configuration In the lighting fixture 1 of embodiment 1, the upper center 211 of the backrest 21 and the light source 11 of the lighting fixture 1 are located on a plane perpendicular to the left-right direction, but the upper center 211 of the backrest 21 and the light source 11 of the lighting fixture 1 may be located at different positions in the left-right direction.

[0057] FIG. 6 is a schematic diagram based on the line of sight of a user P1 on a half line A0 extending forward from the upper end center 211 of the backrest 21. In FIG.

[0058] As a first specific example according to the third embodiment, the light source 11 of the lighting device 1 is located between a surface S11 at 50° to the left and a surface S12 at 50° to the right in the left-right direction. Here, each of the surfaces S11 and S12 is parallel to the second direction D2, and is a plane that forms an angle of 50° with the half line A0 in a plan view from the second direction D2. In other words, in a plan view from the second direction D2, an angle formed by a line segment connecting the light source 11 of the lighting device 1 and the half line A0 is 50° or less. For example, when the light source 11 of the lighting device 1 is located within the guidance visual field R2, the light source 11 of the lighting device 1 is present in a region R21 located between the surfaces S11 and S12 in the guidance visual field R2. Also, for example, when the light source 11 of the lighting device 1 is located within the auxiliary visual field R3, the light source 11 of the lighting device 1 is present in a region R31 located between the surfaces S11 and S12 in the auxiliary visual field R3. This allows light source 11 of lighting fixture 1 to be installed in front of chair 2, making it possible to design the space including lighting fixture 1 and chair 2 compactly.

[0059] As a second specific example according to the third embodiment, the light source 11 of the lighting device 1 is located to the left of the surface S11 in the left-right direction or to the right of the surface S12, which is 50° to the right. In other words, in a plan view from the second direction D2, the angle between the line segment connecting the light source 11 of the lighting device 1 and the half line A0 is greater than 50°. For example, when the light source 11 of the lighting device 1 is located within the guidance field R2, the light source 11 of the lighting device 1 is present in a region R22 of the guidance field R2 other than between the surface S11 and the surface S12. Furthermore, when the light source 11 of the lighting device 1 is located within the auxiliary field R3, the light source 11 of the lighting device 1 is present in a region R32 of the auxiliary field R3 other than between the surface S11 and the surface S12. This allows the light source 11 of the lighting fixture 1 to be installed in the left-right direction of the chair 2, making it easy to arrange the light source 11 of the lighting fixture 1 in the region R22 or region R32 even if the distance between the light source 11 of the lighting fixture 1 and the upper end center 211 of the backrest 21 of the chair 2 is shortened. Therefore, it is possible to reduce the space including the lighting fixture 1 and the chair 2 in the front-to-rear direction.

[0060] In a third specific example according to the third embodiment, light sources 11 of lighting fixture 1 are arranged at the positions of light sources 11 of lighting fixture 1 in the first specific example and in the positions of light sources 11 of lighting fixture 1 in the second specific example. Lighting fixture 1 in the first specific example corresponds to the first lighting fixture. Lighting fixture 1 in the second specific example corresponds to the second lighting fixture.

[0061] 2.Effects In lighting system 100 according to embodiment 3, in a plan view from second direction D2 perpendicular to both first direction D1 and the left-right direction, the angle between a line segment connecting light source 11 of lighting fixture 1 and upper end center 211 of backrest 21 and half line A0 is 50° or less. This allows light source 11 of lighting fixture 1 to be installed in front of chair 2, making it possible to design a space including lighting fixture 1 and chair 2 compactly.

[0062] Moreover, the lighting system 100 according to the fourth embodiment further includes a lighting fixture 1. In a plan view from a second direction D2 perpendicular to both the first direction D1 and the left-right direction, the angle between a line segment connecting light source 11 of lighting fixture 1 and the upper end center 211 of the backrest 21 and a half line A0 is greater than 50°. As a result, light sources 11 of lighting fixture 1 are disposed on both the front and side of chair 2, thereby improving the sleep-inducing and relaxing effects on user P1.

[0063] Furthermore, in lighting system 100 according to embodiment 3, in a plan view from second direction D2 perpendicular to both first direction D1 and the left-right direction, the angle between a line segment connecting light source 11 of lighting fixture 1 and upper end center 211 of backrest 21 and half line A0 is greater than 50°. This allows light source 11 of lighting fixture 1 to be installed to the side of chair 2, making it possible to reduce the space including lighting fixture 1 and chair 2 in the front-to-rear direction.

[0064] (Embodiment 4) 7, in a lighting system 100 according to a fourth embodiment, a lighting fixture 1 has a light blocking member 12 that covers a part of a light source 11. The light source 11 and the light blocking member 12 are located inside an induced field R2 that includes half lines LB1 and LB2 as its outer edges. The light blocking member 12 blocks direct light and indirect light from within the induced field R2 from reaching the upper center 211 of a backrest 21, out of the light emitted by the light source 11. The lighting fixture 1 is, for example, a so-called cornice lighting that illuminates a wall surface.

[0065] In the lighting system 100 according to the fourth embodiment, as shown in FIG. 7, the light source 11 is located inside the guidance visual field R2, but the light that reaches the user P1 directly from the light source 11 is blocked by the light blocking member 12, so the light cannot be seen by the user P1. As for the indirect light emitted from inside the guidance visual field R2, the indirect light using the light from the light source 11 as the light source cannot be seen by the user P1. On the other hand, the area 13 that is located outside the guidance visual field R2 and illuminated by the light source 11 is visible to the user P1. In other words, in the lighting system 100 according to the fourth embodiment, the area 13 illuminated by the light source 11 of the lighting device 1, which is indirect lighting, is located outside the guidance visual field R2, similarly to the light source 11 of the lighting system 100 according to the first embodiment. In the lighting system 100 according to the fourth embodiment, the light source 11 of the lighting device 1 may be located anywhere as long as it cannot be directly seen by the user P1.

[0066] In addition, in the auxiliary visual field R3, which is outside the induced visual field R2 and includes the half lines LC1 and LC2 as its outer edges, when the influence of external light is present, the luminance is 100 cd / m 2 Below, when there is no influence of external light, the brightness is 50cd / m 2 As in the first embodiment, the following is preferable.

[0067] In the lighting system 100 according to the fourth embodiment, the light source 11 of the lighting device 1 is disposed within the induced visual field R2, while the light blocking member 12 covers the light source 11 so that the light emitted from the light source 11 does not enter the induced visual field R2 of the user P1. Therefore, it is possible to dispose the light source 11 in a position directly in front of the user P1 without impairing the sleep-inducing effect and relaxation effect on the user P1.

[0068] In the lighting system 100 according to the fourth embodiment, the light source 11 of the lighting device 1 is disposed inside the guidance field R2, but the light source 11 of the lighting device 1 may be disposed inside the effective field R1 that includes the half lines LA1 and LA2 as its outer edges. In this case, the light blocking member 12 blocks at least direct light and indirect light from within the effective field R1 from among the light emitted by the light source 11, so that they do not reach the upper center 211 of the backrest 21. The light blocking member 12 may also block indirect light from within the guidance field R2 so that it does not reach the upper center 211 of the backrest 21. (Embodiment 5) 1. Configuration In the lighting system 100 according to the fifth embodiment, the chair 2 has a headrest 213. More specifically, the backrest 21 of the chair 2 has a main body portion 212 and the headrest 213, as shown in FIG.

[0069] When the backrest 21 of the chair 2 includes the headrest 213, the upper end center 211 of the backrest 21 is the upper end center 211 of the headrest 213. That is, the upper end center 211 of the headrest 213 corresponds to the reference point. Moreover, the normal direction of the backrest 21 at the upper end center 211 of the backrest 21 is the normal direction D11 of the headrest 213. As a result, in a chair 2 having a headrest 213, the posture of the user P1 can be predicted more accurately by using the headrest 213 as a reference.

[0070] Here, when the head of the user P1 is not in contact with the main body 212 of the backrest 21 but is in contact with the headrest 213, the line of sight of the user P1 is located on a half line A0 extending from the upper end center 211 of the headrest 213 in the normal direction D11 of the headrest 213. On the other hand, when the head of the user P1 is in contact with both the headrest 213 and the main body 212, the line of sight of the user P1 is on a half line A1 extending from the upper end center 211 of the headrest 213 in the normal direction D12 of the main body 212, or on a half line A2 located between the half lines A0 and A1.

[0071] Therefore, in the lighting system 100 according to the fifth embodiment, when the extension direction of an arbitrary half-line A2 located between the half-lines A0 and A1 is the line of sight of the user P1, the light source 11 of the lighting device 1 is arranged so as to satisfy the requirements of any one of the first to fourth embodiments. That is, for example, when the light source 11 is below the upper center 211 of the headrest 213 and outside the induced visual field R2, the angle between the half-line A2 and the line segment connecting the upper center 211 of the headrest 213 and the light source 11 is larger than 50°. As a result, in the lighting system 100 according to the fifth embodiment, even if the direction in which the line of sight extends varies depending on the physique of the user P1, it is possible to exert a sleep-inducing effect and a relaxing effect on the user P1.

[0072] 2.Effects In the lighting system 100 according to the fifth embodiment, the backrest 21 of the chair 2 includes a headrest 213. The upper end center 211 of the backrest 21 is the upper end center 211 of the headrest 213. As a result, in the chair 2 having the headrest 213, the posture of the user P1 can be predicted more accurately by using the headrest 213 as a reference.

[0073] (Embodiment 6) In the lighting system 100 according to the sixth embodiment, the light source 11 of the lighting fixture 1 is arranged at a position other than the upper center 211 of the backrest 21, which is set as the starting position of the viewpoint of the user P1.

[0074] 9, the eye position P11 of the user P1 is located further forward of the backrest 21 than the upper center 211 of the backrest 21. The distance d3 between the eye position P11 of the user P1 and the upper center 211 of the backrest 21 is 250 mm or less, for example, 200 mm.

[0075] In the lighting system 100 according to the sixth embodiment, a half line A0 extending from the eye position P11 of the user P1 in the normal direction D12 of the backrest 21 is set as the line of sight of the user P1. That is, the eye position P11 of the user P1 corresponds to the reference point. That is, the outer edge of the effective visual field R1 including the half lines LA1 and LA2 has the eye position P11 of the user P1 as a vertex. Similarly, the outer edge of the induction visual field R2 including the half lines LB1 and LB2 has the eye position P11 of the user P1 as a vertex. Similarly, the outer edge of the auxiliary visual field R3 including the half lines LC1 and LC2 has the eye position P11 of the user P1 as a vertex.

[0076] This allows the light source 11 to be positioned so as to better match the visual field characteristics of the user P1. Also, even if the position of the top end of the backrest 21 or the top end of the headrest 213 is different from the eye height of the user P1, for example, when the top end of the backrest 21 is at the neck height of the user P1 or when the top end of the headrest 213 is higher than the zenith of the head of the user P1, the light source 11 can be appropriately positioned.

[0077] (Other Modifications of the Embodiment) (1) In the lighting systems 100 according to the first to sixth embodiments, the chair 2 is a reclining seat in which the angle a1 of the backrest 21 can be freely changed, but the chair 2 may be one in which the angle a1 of the backrest 21 can be changed in stages, so that one angle can be selected from a plurality of options. Also, the chair 2 may be one in which the angle a1 of the backrest 21 cannot be changed.

[0078] In the first embodiment, the light source 11 of the lighting device 1 is outside the effective visual field R1 or outside the induced visual field R2 in the entire range of the angle a1 of the backrest 21. However, for example, depending on the angle a1 of the backrest 21, the light source 11 of the lighting device 1 may be outside the induced visual field R2 or inside the effective visual field R1. For example, if the driver's seat of a passenger vehicle is a chair 2, the light source 11 of the lighting device 1 may be outside the induced visual field R2 if the angle a1 of the backrest 21 is 10° or less, and may be inside the effective visual field R1 if the angle a1 of the backrest 21 is 50° or more. This allows the driver to relax when the seat is reclined, while making the driver moderately tense during driving.

[0079] (2) Although the lighting system 100 according to the third embodiment includes a plurality of lighting fixtures 1 in the third specific example, a single lighting fixture 1 may include a plurality of light sources 11.

[0080] (3) In the lighting system 100 according to the first embodiment, the light source 11 of the lighting device 1 is outside the effective visual field R1 or outside the induced visual field R2 in the entire range of the angle a1 of the backrest 21. However, for example, the lighting system 100 may be configured to include the light source 11 of the first lighting device 1 at a position that is outside the induced visual field R2 when the angle of the backrest 21 is 60°, and the light source 11 of the second lighting device 1 at a position that is outside the induced visual field R2 when the angle of the backrest 21 is 0°. In this case, the first lighting device 1 corresponds to the lighting device when the angle of the backrest 21 is 60°, and the second lighting device 1 corresponds to the lighting device when the angle of the backrest 21 is 0°. In this case, the lighting system 100 further includes a control device 15, which may switch the lighting device 1 to be turned on depending on the angle of the backrest 21 of the chair 2.

[0081] (4) The above-described embodiments and modifications are merely a part of the various embodiments and modifications of the present invention. In addition, the embodiments and modifications can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. In addition, one embodiment and another embodiment, one embodiment and another modification, or one modification and another modification may be combined as appropriate.

[0082] (Aspect) A lighting system (100) according to a first embodiment includes a chair (2) and a lighting fixture (1). The chair (2) has a backrest (21). The lighting fixture (1) has a light-emitting unit (11; 13). When the angle (a1) of the backrest (21) of the chair (2) is a predetermined angle, a half line (LA1) extends from the upper end center (211) of the backrest (21), which is a reference point (211; P11), toward the front side of the backrest (21), and extends from the reference point (211; P11) in a direction that forms an angle of 8° upward with respect to a first direction (D1), which is the normal direction of the backrest (21) at the reference point (211; P11); The light-emitting portion (11) of the lighting device (1) is disposed at a position outside a first region (R1) including as its outer edges a half line (LA2) extending from the reference point (211;P11) in a direction forming 12° with respect to the first direction (D1), a half line extending from the reference point (211;P11) in a direction forming 15° to the right with respect to the first direction (D1), and a half line extending from the reference point (211;P11) in a direction forming 15° to the left with respect to the first direction (D1). When the angle (a1) of the backrest (21) of the chair (2) is a predetermined angle, the distance between the light-emitting portion (11) of the lighting device (1) and the reference point (211;P11) is 500 mm or more.

[0083] According to the lighting system (100) of the above aspect, the user who sits naturally in the chair (2) is prevented from receiving light emitted from the light source (11) with high efficiency, and the lighting device (1) can provide a relaxing effect and a sleep-inducing effect to the user.

[0084] In the lighting system (100) according to the second aspect, when the angle of the backrest (21) of the chair (2) in the first aspect is a predetermined angle, a half line (LB1) extends from the reference point (211; P11) to the front side of the backrest (21) and forms an angle of 35° upward with respect to the first direction (D1), and a half line (LB2) extends from the reference point (211; P11) in a direction forming an angle of 50° downward with respect to the first direction (D1). The light-emitting portion (11;13) of the lighting device (1) is arranged at a position outside a second region (R2) that includes as its outer edges a half line (LB2) extending from reference point (211;P11) in a direction forming 50 degrees to the right with respect to the first direction (D1), a half line extending from reference point (211;P11) in a direction forming 50 degrees to the left with respect to the first direction (D1).

[0085] The lighting system (100) according to the above aspect can further reduce the high-performance information reception of the light irradiated from the light source (11) by the user who is naturally seated in the chair (2), thereby enhancing the relaxing and sleep-inducing effects of the lighting fixture (1) on the user.

[0086] In the lighting system (100) according to the third aspect, in the first or second aspect, the light-emitting portion (11; 13) of the lighting device (1) is disposed below a half line (A0) extending from a reference point (211; P11) in a first direction (D1).

[0087] According to the lighting system (100) of the above aspect, when the backrest (21) of the chair (2) is reclining, it becomes easy to arrange the light source (11) outside the first region (R1) or outside the second region (R2), regardless of the angle (a1) of the backrest (21) of the chair (2).

[0088] In the lighting system (100) according to the fourth aspect, in any one of the first to third aspects, a region (R 1 ) is defined that includes as its outer edge each of a half line (LB1) extending from the reference point (211; P11) to the front side of the backrest (21), a half line (LB2) extending from the reference point (211; P11) in a direction forming 35° upward with respect to the first direction (D1), a half line (LB2) extending from the reference point (211; P11) in a direction forming 50° downward with respect to the first direction (D1), a half line (211; P11) extending from the reference point (211; P11) in a direction forming 50° to the right with respect to the first direction (D1), and a half line (211; P11) extending from the reference point (211; P11) in a direction forming 50° to the left with respect to the first direction (D1). luminance is 100 cd / m2 inside a region (R3) that is outside the region (R2) and extends from the reference point (211;P11) to the front side of the backrest (21), and that includes as its outer edges a half line (LC1) extending from the reference point (211;P11) in a direction that forms 50° upward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211;P11) in a direction that forms 75° downward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211;P11) in a direction that forms 100° to the right with respect to the first direction (D1), and a half line (LC2) extending from the reference point (211;P11) in a direction that forms 100° to the left with respect to the first direction (D1). 2 The following is the result.

[0089] The lighting system (100) according to the above aspect can reduce the possibility that the light emitted by the light-emitting unit (11; 13) of the lighting device (1) interferes with the relaxation and sleep-inducing effects on the user.

[0090] In the lighting system (100) according to the fifth aspect, in any one of the first to third aspects, the lighting system (100) extends from the reference point (211;P11) toward the front side of the backrest (21), and is outside a region (R2) that includes as its outer edges a half line (LB1) extending from the reference point (211;P11) in a direction that forms 35° upward with respect to the first direction (D1), a half line (LB2) extending from the reference point (211;P11) in a direction that forms 50° downward with respect to the first direction (D1), a half line (211;P11) extending from the reference point (211;P11) in a direction that forms 50° to the right with respect to the first direction (D1), and a half line (211;P11) extending from the reference point (211;P11) in a direction that forms 50° to the left with respect to the first direction (D1); and The luminance when the light-emitting portion (11; 13) of the lighting device (1) is not emitting light is 10 cd / m inside a region (R3) that extends from the reference point (211; P11) to the front side of the backrest (21), and that includes as its outer edges a half line (LC1) extending from the reference point (211; P11) in a direction that forms 50° upward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211; P11) in a direction that forms 75° downward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211; P11) in a direction that forms 100° to the right with respect to the first direction (D1), and a half line (LC2) extending from the reference point (211; P11) in a direction that forms 100° to the left with respect to the first direction (D1). 2 And the luminance when the light-emitting part (11; 13) of the lighting device (1) is emitting light is 50 cd / m 2 It is.

[0091] The lighting system (100) according to the above aspect can reduce the possibility that the light emitted by the light-emitting unit (11) of the lighting device (1) interferes with the relaxation and sleep-inducing effects on the user.

[0092] In the lighting system (100) of the sixth aspect, in any of the first to fifth aspects, the optical axis of the light emitted from the light-emitting unit (11; 13) of the lighting device (1) does not pass through an area with a radius of 250 mm centered on the reference point (211; P11).

[0093] According to the lighting system (100) of the above aspect, it is possible to prevent light emitted from the light-emitting unit (11; 13) of the lighting device (1) from reaching the eyes of a user directly.

[0094] In the lighting system (100) according to the seventh aspect, in any one of the first to third aspects, the light intensity emitted from the light-emitting unit (11; 13) is changed. The lighting system (100) according to the seventh aspect changes the light intensity emitted from the light-emitting unit (11; 13). The lighting system (100) according to the seventh aspect extends from the reference point (211; P11) to the front side of the backrest (21), and is outside the region (R2) including as its outer edges a half line (LB1) extending from the reference point (211; P11) in a direction that forms 35° upward with respect to the first direction (D1), a half line (LB2) extending from the reference point (211; P11) in a direction that forms 50° downward with respect to the first direction (D1), a half line (LB2) extending from the reference point (211; P11) in a direction that forms 50° right with respect to the first direction (D1), and a half line (LB3) extending from the reference point (211; P11) in a direction that forms 50° left with respect to the first direction (D1), and is located outside the region (R2) including as its outer edges a half line (LB3) extending from the reference point (211; P11) in a direction that forms 50° right with respect to the first direction (D1), and a half line (LB4) extending from the reference point (211; P11) in a direction that forms 50° left with respect to the first direction (D1). 1) toward the front side of the backrest (21), and the maximum luminance value is 100 cd / m inside a region (R3) including as its outer edges a half line (LC1) extending from the reference point (211;P11) in a direction forming 50° upward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211;P11) in a direction forming 75° downward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211;P11) in a direction forming 100° to the right with respect to the first direction (D1), and a half line (LC2) extending from the reference point (211;P11) in a direction forming 100° to the left with respect to the first direction (D1). 2 The following is the result.

[0095] The lighting system (100) according to the above aspect can reduce the possibility that the light emitted by the light-emitting unit (11; 13) of the lighting device (1) interferes with the sleep-inducing effect. Also, the relaxation effect can be enhanced by changing the light intensity of the light-emitting unit (11; 13) of the lighting device (1).

[0096] In the lighting system (100) according to the eighth aspect, in any one of the first to third aspects, the intensity of the light emitted from the light emitting section (11; 13) is changed. The area (R2) extends from the reference point (211;P11) to the front side of the backrest (21), and includes as its outer edges a half line (LB1) extending from the reference point (211;P11) in a direction that forms an angle of 35° upward with respect to the first direction (D1), a half line (LB2) extending from the reference point (211;P11) in a direction that forms an angle of 50° downward with respect to the first direction (D1), a half line (LB2) extending from the reference point (211;P11) in a direction that forms an angle of 50° to the right with respect to the first direction (D1), and a half line (LB3) extending from the reference point (211;P11) in a direction that forms an angle of 50° left with respect to the first direction (D1), and is outside the area (R2) that includes as its outer edges a half line (LB1) extending from the reference point (211;P11) to the front side of the backrest (21), and includes as its outer edges a half line (LB2) extending from the reference point (211;P11) in a direction that forms an angle of 50° downward with respect to the first direction (D1), and a half line (LB3) extending from the reference point (211;P11) in a direction that forms an angle of 50° left with respect to the first direction (D1). ), and inside a region (R3) including as its outer edges a half line (LC1) extending from the reference point (211;P11) in a direction forming 50° upward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211;P11) in a direction forming 75° downward with respect to the first direction (D1), a half line (LC2) extending from the reference point (211;P11) in a direction forming 100° to the right with respect to the first direction (D1), and a half line (LC2) extending from the reference point (211;P11) in a direction forming 100° to the left with respect to the first direction (D1), the luminance when the light-emitting portion (11;13) of the lighting device (1) is not emitting light is 10 cd / m 2 And the luminance when the light-emitting part (11; 13) of the lighting device (1) is emitting light is 50 cd / m 2 It is.

[0097] The lighting system (100) according to the above aspect can reduce the possibility that the light emitted by the light-emitting unit (11; 13) of the lighting device (1) interferes with the sleep-inducing effect. Also, the relaxation effect can be enhanced by changing the light intensity of the light-emitting unit (11; 13) of the lighting device (1).

[0098] In a lighting system (100) according to a ninth aspect, in any of the first to eighth aspects, in a planar view from a second direction (D2) perpendicular to both the first direction (D1) and the left-right direction, the angle between a line segment connecting a light-emitting portion (11; 13) of the lighting device (1) and a reference point (211; P11) and a half line (A0) extending from the reference point (211; P11) in the first direction (D1) is 50° or less.

[0099] According to the lighting system (100) of the above aspect, the light-emitting section (11; 13) of the lighting device (1) can be installed in front of the chair (2), so that the space including the lighting device (1) and the chair (2) can be designed compactly.

[0100] A lighting system (100) according to a tenth aspect is the same as that of the ninth aspect, and further includes a second lighting fixture (1) different from the first lighting fixture (1) which is a lighting fixture. The second lighting fixture (1) includes a second light-emitting unit (11; 13) different from the first light-emitting unit (11; 13) which is a light-emitting unit. In a plan view from a second direction (D2) perpendicular to both the first direction (D1) and the left-right direction, an angle formed by a line segment connecting the second light-emitting unit (11; 13) of the second lighting fixture (1) and a reference point (211; P11) and a half line (A0) extending from the reference point (211; P11) in the first direction (D1) is greater than 50°.

[0101] According to the lighting system (100) of the above aspect, the light-emitting portions (11; 13) of the lighting device (1) are disposed on both the front and sides of the chair (2), thereby improving the sleep-inducing effect and relaxation effect.

[0102] In a lighting system (100) according to an eleventh aspect, in any of the first to eighth aspects, in a planar view from a second direction (D2) perpendicular to both the first direction (D1) and the left-right direction, the angle formed by a line segment connecting the light-emitting portion (11; 13) of the lighting device (1) and the reference point (211; P11) and a half line (A0) extending from the reference point (211; P11) in the first direction (D1) is greater than 50°.

[0103] According to the lighting system (100) of the above aspect, the light source unit (11; 13) of the lighting device (1) can be installed to the side of the chair (2), so that the space including the lighting device (1) and the chair (2) can be made smaller in the front-to-rear direction.

[0104] In the lighting system (100) according to the twelfth aspect, in any one of the first to eleventh aspects, the backrest (21) of the chair (2) includes a headrest (213). The reference point (211) is the center (211) of the upper end of the headrest (213).

[0105] According to the lighting system (100) of the above aspect, in the chair (2) having the headrest (213), the posture of the user can be predicted more accurately by using the headrest (213) as a reference.

[0106] A lighting fixture (1) according to a thirteenth aspect is used in a lighting system (100) including a chair (2) having a backrest (21). The lighting fixture (1) has a light-emitting unit (11; 13). When the angle (a1) of the backrest (21) of the chair (2) is a predetermined angle, a half line (LA1) extends from the upper end center (211) of the backrest (21), which is a reference point (211; P11), toward the front side of the backrest (21) and forms an angle of 8° upward with respect to a first direction (D1), which is the normal direction of the backrest (21) at the reference point (211; P11), and a half line (LA2) extends from the reference point (211; P11) in a direction that forms an angle of 8° upward with respect to a first direction (D1), which is the normal direction of the backrest (21) at the reference point (211; P11). The light-emitting portion (11) of the lighting device (1) is disposed at a position outside a first region (R1) including as its outer edges a half line (LA2) extending from the reference point (211;P11) in a direction forming 12° with respect to the first direction (D1), a half line extending from the reference point (211;P11) in a direction forming 15° to the right with respect to the first direction (D1), and a half line extending from the reference point (211;P11) in a direction forming 15° to the left with respect to the first direction (D1). When the angle (a1) of the backrest (21) of the chair (2) is a predetermined angle, the distance between the light-emitting portion (11) of the lighting device (1) and the reference point (211;P11) is 500 mm or more.

[0107] The lighting fixture (1) according to the above aspect reduces the high-performance information reception of the light irradiated from the light source (11) by a user naturally seated in the chair (2), and can provide a relaxation effect and a sleep-inducing effect to the user.

[0108] A lighting control system (10) according to a fourteenth aspect includes the lighting fixture (1) according to the thirteenth aspect and a control device (15). The control device (15) controls the lighting fixture (1).

[0109] According to the lighting control system (10) of the above aspect, it is possible to control the lighting device (1) so that the light emitted from the light-emitting unit (11) of the lighting device (1) has a relaxing effect and a sleep-inducing effect. [Explanation of symbols]

[0110] 100 Lighting System 10 Lighting control system 1 Lighting equipment 11 Light source (light emitting part) 13 Area (light emitting part) 15 Control device 2 Chairs 21 Backrest 211 Top center (reference point) 213 Headrest a1 angle P11 Eye position (reference point) D1 1st direction D2 2nd direction A0;LA1,LA2,LB1,LB2,LC1,LC2 Half line R1 Effective field of view (first area) R2 guided visual field (second area, area) R3 Auxiliary visual field (area)

Claims

1. A chair having a backrest; A lighting fixture having a light-emitting portion; Equipped with When the angle of the backrest of the chair is a predetermined angle, the light-emitting portion of the lighting device is disposed at a position outside a first region that extends from a reference point, which is the center of the upper end of the backrest, toward a front side of the backrest, and that includes as outer edges a half line extending from the reference point in a direction that forms 8° upward with respect to a first direction that is a normal direction of the backrest at the reference point, a half line extending from the reference point in a direction that forms 12° downward with respect to the first direction, a half line extending from the reference point in a direction that forms 15° to the right with respect to the first direction, and a half line extending from the reference point in a direction that forms 15° to the left with respect to the first direction; The distance between the light-emitting portion of the lighting device and the reference point is 500 mm or more. Lighting system.

2. When the angle of the backrest of the chair is the predetermined angle, the light-emitting portion of the lighting device is disposed at a position outside a second region that extends from the reference point toward the front side of the backrest and includes as outer edges a half line extending from the reference point in a direction that forms an angle of 35° upward with respect to the first direction, a half line extending from the reference point in a direction that forms an angle of 50° downward with respect to the first direction, a half line extending from the reference point in a direction that forms an angle of 50° to the right with respect to the first direction, and a half line extending from the reference point in a direction that forms an angle of 50° to the left with respect to the first direction; 10. The lighting system of claim 1.

3. The light-emitting portion of the lighting device is disposed below a half line extending from the reference point in the first direction.

3. A lighting system according to claim 1 or 2.

4. The seat back is outside a region including, as outer edges, a half line extending from the reference point in a direction that forms an angle of 35° upward with respect to the first direction, a half line extending from the reference point in a direction that forms an angle of 50° downward with respect to the first direction, a half line extending from the reference point in a direction that forms an angle of 50° to the right with respect to the first direction, and a half line extending from the reference point in a direction that forms an angle of 50° to the left with respect to the first direction, and the half line extending from the reference point in a direction that forms an angle of 50° to the left with respect to the first direction. a luminance of 100 cd / m2 or less is achieved within an area extending toward the front side of the backrest, the area including, as outer edges, a half line extending from the reference point in a direction that forms 50° upward with respect to the first direction, a half line extending from the reference point in a direction that forms 75° downward with respect to the first direction, a half line extending from the reference point in a direction that forms 100° to the right with respect to the first direction, and a half line extending from the reference point in a direction that forms 100° to the left with respect to the first direction. ２ Below is the 3. A lighting system according to claim 1 or 2.

5. a half-line extending from the reference point to the front side of the backrest, the half-line extending from the reference point in a direction forming 35° upward with respect to the first direction, the half-line extending from the reference point in a direction forming 50° downward with respect to the first direction, the half-line extending from the reference point in a direction forming 50° to the right with respect to the first direction, and the half-line extending from the reference point in a direction forming 50° to the left with respect to the first direction, and the half-line extending from the reference point in a direction forming 50° to the left with respect to the first direction, the half-line extending from the reference point to the front side of the backrest, the half-line extending from the reference point to the direction forming 50° upward with respect to the first direction, the half-line extending from the reference point in a direction forming 75° downward with respect to the first direction, the half-line extending from the reference point in a direction forming 100° to the right with respect to the first direction, and the half-line extending from the reference point in a direction forming 100° to the left with respect to the first direction, When the light-emitting portion of the lighting device does not emit light, the luminance is 10 cd / m ２ and The luminance when the light-emitting portion of the lighting device is emitting light is 50 cd / m ２ That is, 3. A lighting system according to claim 1 or 2.

6. The optical axis of the light emitted from the light-emitting unit of the lighting device does not pass through an area having a radius of 250 mm centered on the reference point.

3. A lighting system according to claim 1 or 2.

7. changing the intensity of light irradiated from the light emitting unit; The seat back is outside a region including, as outer edges, a half line extending from the reference point in a direction that forms an angle of 35° upward with respect to the first direction, a half line extending from the reference point in a direction that forms an angle of 50° downward with respect to the first direction, a half line extending from the reference point in a direction that forms an angle of 50° to the right with respect to the first direction, and a half line extending from the reference point in a direction that forms an angle of 50° to the left with respect to the first direction, and the half line extending from the reference point to the front side of the seat back is outside a region including, as outer edges, a half line extending from the reference point in a direction that forms an angle of 35° upward with respect to the first direction, ... a region extending toward the front side of the seat back, the region including as its outer edges a half line extending from the reference point in a direction that forms 50° upward with respect to the first direction, a half line extending from the reference point in a direction that forms 75° downward with respect to the first direction, a half line extending from the reference point in a direction that forms 100° to the right with respect to the first direction, and a half line extending from the reference point in a direction that forms 100° to the left with respect to the first direction, the maximum luminance value being 100 cd / m ２ Below is the 3. A lighting system according to claim 1 or 2.

8. changing the intensity of light irradiated from the light emitting unit; a half-line extending from the reference point to the front side of the backrest, the half-line extending from the reference point in a direction forming 35° upward with respect to the first direction, the half-line extending from the reference point in a direction forming 50° downward with respect to the first direction, the half-line extending from the reference point in a direction forming 50° to the right with respect to the first direction, and the half-line extending from the reference point in a direction forming 50° to the left with respect to the first direction, and the half-line extending from the reference point in a direction forming 50° to the left with respect to the first direction, the half-line extending from the reference point to the front side of the backrest, the half-line extending from the reference point to the direction forming 50° upward with respect to the first direction, the half-line extending from the reference point in a direction forming 75° downward with respect to the first direction, the half-line extending from the reference point in a direction forming 100° to the right with respect to the first direction, and the half-line extending from the reference point in a direction forming 100° to the left with respect to the first direction, When the light-emitting portion of the lighting device does not emit light, the luminance is 10 cd / m ２ and The maximum luminance when the light-emitting portion of the lighting device is emitting light is 50 cd / m ２ That is, 3. A lighting system according to claim 1 or 2.

9. In a plan view from a second direction perpendicular to both the first direction and the left-right direction, an angle between a line segment connecting the light-emitting portion of the lighting device and the reference point and a half line extending from the reference point in the first direction is 50° or less.

3. A lighting system according to claim 1 or 2.

10. Further comprising a second lighting fixture different from the first lighting fixture, The second lighting device includes a second light-emitting unit different from the first light-emitting unit, In a plan view from the second direction, an angle between a line segment connecting the second light-emitting portion of the second lighting device and the reference point and a half line extending from the reference point in the first direction is greater than 50°.

10. The lighting system of claim 9.

11. In a plan view from a second direction perpendicular to both the first direction and the left-right direction, an angle between a line segment connecting the light-emitting portion of the lighting device and the reference point and a half line extending from the reference point in the first direction is greater than 50°.

3. A lighting system according to claim 1 or 2.

12. the back of the chair includes a headrest; The reference point is the center of the upper end of the headrest.

3. A lighting system according to claim 1 or 2.

13. A lighting fixture for use in a lighting system including a chair having a backrest, comprising: Equipped with a light emitting section, When the angle of the backrest of the chair is a predetermined angle, the light-emitting portion of the lighting device is disposed at a position outside a first region that extends from a reference point, which is the center of the upper end of the backrest, toward a front side of the backrest, and that includes as outer edges a half line extending from the reference point in a direction that forms 8° upward with respect to a first direction that is a normal direction of the backrest at the reference point, a half line extending from the reference point in a direction that forms 12° downward with respect to the first direction, a half line extending from the reference point in a direction that forms 15° to the right with respect to the first direction, and a half line extending from the reference point in a direction that forms 15° to the left with respect to the first direction; The distance between the lighting fixture and the reference point is 500 mm or more. Lighting fixtures.

14. A lighting device according to claim 13; A control device for controlling the lighting device. Lighting control system.

Images