JP2018078011A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of adjusting the direction of a high illuminance unit during lights-out time, so that high illuminance light is radiated to a desired position when lighted.SOLUTION: A louver film 60 is provided on a surface of a lens 50, and by equalizing an irradiation angle of a high illuminance lighting part 20 and a view angle of the louver film 60, the position in which the light emitted from the high illuminance lighting part 20 is radiated can be adjusted in a state where the high illuminance lighting part 20 is turned off. Thereby, a user can radiate the light from the high illuminance lighting part 20 to a desired position without a feeling of glare.SELECTED DRAWING: Figure 3

Description

  The following disclosure relates to an illuminating device, and more particularly, to an illuminating device that emits light with high illuminance.

  FIG. 28 is a diagram illustrating a conventional state in which light of high illuminance is applied to the face of a sleeping user, and FIG. 29 illustrates a conventional state in which light of high illuminance is applied to the chest of a sleeping user. FIG. In recent years, as shown in FIG. 28, using a high-illuminance illumination device 110, the user's face starts to be irradiated with high-intensity light slightly before the scheduled wake-up time, and continues irradiation for a while after waking up. . As a result, serotonin, which is a substance in the brain that promotes awakening, is activated, and when that state continues until night, serotonin changes to melatonin, a hormone that promotes sleep. As described above, it is known that when a user is exposed to light of high illuminance when getting up, the user can fall asleep naturally on the night of the day, so that the quality of sleep is improved. On the other hand, as shown in FIG. 29, it has been found that irradiating light other than the face, such as the chest of the user, with the light from the high illumination illumination device 110 is not very useful in improving the quality of sleep.

  Patent Document 1 discloses a lighting fixture in which an LED (Light Emitting Device), a lens, and a light shielding louver are integrally formed. The traveling direction of the light of the LED is controlled by the lens, but a part of the light is refracted in the lens and irradiated in an undesired direction. For this reason, in a lighting fixture, the light-shielding louver is provided outside the lens so that light from the lens does not spread in an unintended direction. By irradiating the user's face before and after waking up with high illuminance light emitted from such a luminaire, the quality of sleep of the user can be improved.

JP 2009-129750 A

  However, in order to improve the quality of sleep, it is necessary to irradiate the user's face with light having an illuminance of 1500 lx or more. Even if it is going to adjust the direction of a lighting fixture so that the light from a lighting fixture may be irradiated to a user's face in the state where the lighting fixture of patent documents 1 has emitted such high illumination light, Because of the glare, the user cannot look directly at the luminaire. For this reason, it is difficult to adjust the direction in the state where the lighting fixture is turned on. In addition, in a state where the lighting fixture is turned off, it is difficult for the user to adjust the direction of the lighting fixture because the light irradiation direction is unknown.

  Therefore, the following disclosure aims to provide an illuminating device capable of adjusting the orientation of the high illuminance unit when the light is turned off so that the high illuminance light is irradiated to a desired position when the light is turned on.

1st aspect of this invention is an illuminating device provided with the 1st illumination unit which can irradiate light to a desired position by changing the direction of an output surface,
The first lighting unit includes:
A plurality of light sources mounted on a substrate;
A plurality of lenses provided corresponding to each of the plurality of light sources;
A louver disposed on a surface of the plurality of lenses,
The plurality of light sources, the plurality of lenses, and the louver are integrally formed,
The illumination angle of the light source and the viewing angle of the louver are substantially the same.

According to a second aspect of the present invention, in the first aspect of the present invention,
The irradiation angle is a 1/10 beam angle,
The viewing angle is not less than zero viewing angle and not more than 1/10 viewing angle.

According to a third aspect of the present invention, in the second aspect of the present invention,
The range of the irradiation angle is 30 ° or less in all angles.

According to a fourth aspect of the present invention, in the first aspect of the present invention,
The viewing angle and the irradiation angle satisfy the following expressions.
1 ≦ viewing angle / irradiation angle ≦ 1.2

According to a fifth aspect of the present invention, in the first aspect of the present invention,
The shape of the louver is a film shape.

According to a sixth aspect of the present invention, in the first aspect of the present invention,
The shape of the louver is a panel shape.

According to a seventh aspect of the present invention, in the first aspect of the present invention,
The louver includes a plurality of light shielding layers arranged in one direction at a predetermined pitch.

According to an eighth aspect of the present invention, in the first aspect of the present invention,
The louver includes a plurality of light shielding layers arranged in one direction at a predetermined pitch and a plurality of light shielding layers arranged at a predetermined pitch in a direction orthogonal to the one direction.

According to a ninth aspect of the present invention, in the first aspect of the present invention,
The first lighting unit includes:
An illumination unit including the light source, the lens, and the louver, and capable of adjusting an inclination angle so that light emitted from the light source can be irradiated to a desired position;
A circuit unit that houses a drive circuit that drives the light source,
The circuit unit is fixedly installed, and the illumination unit is rotatably attached to the circuit unit by an inclination angle adjusting shaft.

According to a tenth aspect of the present invention, in a ninth aspect of the present invention,
The illumination unit of the first illumination unit is divided into a plurality of partial units, and the inclination angles of the plurality of partial units can be adjusted independently of each other.

According to an eleventh aspect of the present invention, in the first aspect of the present invention,
A second illumination unit that irradiates light having a light intensity smaller than that of the first illumination unit is further provided.

A twelfth aspect of the present invention is the eleventh aspect of the present invention,
The first lighting unit and the second lighting unit are controlled in conjunction so that when one of them is turned on, the other is turned off.

A thirteenth aspect of the present invention is the eleventh aspect of the present invention,
The first lighting unit is integrally formed so as to be surrounded by the second lighting unit.

A fourteenth aspect of the present invention is the eleventh aspect of the present invention,
The first lighting unit and the second lighting unit are installed separately from each other.

According to a fifteenth aspect of the present invention, in the thirteenth or fourteenth aspect of the present invention,
The second lighting unit illuminates the entire room in which the user before sleep is present with warm-colored light, and the first lighting unit is provided immediately before the scheduled wake-up time of the user. Is irradiated with light having an illuminance of 1500 lx or more.

According to a sixteenth aspect of the present invention, in the thirteenth or fourteenth aspect of the present invention,
The second lighting unit illuminates the entire room where the user before sleeping is lit with cherry-colored light, and the first lighting unit is the face of the user immediately before the scheduled wake-up time of the user. Is irradiated with light having an illuminance of 1500 lx or more.

According to a seventeenth aspect of the present invention, in the first aspect of the present invention,
The louver has a decorative layer with a design.

  According to the first aspect of the present invention, light emitted from the first illumination unit is provided by providing a louver on the surface of the lens and further making the illumination angle of the light source substantially equal to the viewing angle of the louver. Can be adjusted in a state where the first lighting unit is turned off. Thereby, the user can irradiate the desired position with the light from the first lighting unit without feeling dazzling. Moreover, since the position where the lens surface arranged in a honeycomb shape can be seen when the first lighting unit is turned off is reduced, the user's discomfort is reduced.

  According to the second aspect of the present invention, the viewing angle of the louver is not less than a 1/10 viewing angle that matches the 1/10 beam angle and not more than a zero viewing angle that is larger than the 1/10 beam angle. In this case, since the irradiation angle of the light source and the viewing angle of the louver are substantially the same, the same effect as in the case of the first aspect can be achieved also in the case of the second aspect.

  According to the third aspect of the present invention, it is possible to secure a margin for adjustment when irradiating light from the first illumination unit to a desired position by setting the irradiation angle range to 30 ° or less in all angles. It becomes possible. In addition, since the range of the viewing angle is narrowed, the range in which the lens surface arranged in a honeycomb shape can be seen is narrowed, and uncomfortable feeling is reduced.

  Since the fourth aspect of the present invention expresses the same thing as the second aspect by a formula, the same effect as in the case of the second aspect can be achieved also by the fourth aspect.

  According to the fifth aspect of the present invention, since the shape of the louver is a film, the louver is thin and light. Thereby, the 1st lighting unit with which the louver film was stuck can also be made thin and light.

  According to the sixth aspect of the present invention, the louver has a panel shape, so that the mechanical strength of the louver is excellent. Thereby, protection of the 1st lighting unit with which the louver panel was stuck is strengthened.

  According to the seventh aspect of the present invention, since the louver is composed of a plurality of light shielding layers arranged in one direction, the lens surface cannot be seen when the user views the first illumination unit from the arrangement direction of the light shielding layers. So the discomfort is reduced. In addition, since the lens surface can be seen when viewed from the direction orthogonal to the arrangement direction with the light source turned off, the user can irradiate the desired position with the light from the first illumination unit without feeling dazzling. Can be adjusted as follows.

  According to the eighth aspect of the present invention, the louver is composed of a plurality of light shielding layers arranged in one direction and a plurality of light shielding layers arranged in a direction orthogonal thereto, so that the user can Since the lens surface is visible only when viewed from the front, the discomfort is further reduced. In addition, since the lens surface can be seen when viewed from the front with the light source turned off, the user does not feel dazzling and adjusts so that the light from the first illumination unit is irradiated to a desired position. Can do.

  According to the ninth aspect of the present invention, in the first illumination unit, the illumination unit is attached by the tilt angle adjusting shaft so as to be rotatable with respect to the circuit unit. For this reason, light can be irradiated to a desired position by rotating the illumination unit and changing the tilt angle.

  According to the tenth aspect of the present invention, the illumination irradiation unit is divided into a plurality of partial units, which can independently adjust the inclination angle. For this reason, even when there are a plurality of desired positions where it is desired to irradiate light, each position can be irradiated with light from the illumination irradiating unit.

  According to the eleventh aspect of the present invention, the illumination device includes not only the first illumination unit but also the second illumination unit that irradiates light with low illuminance, so these two illuminations are used depending on the purpose of illumination. Units can be used properly.

  According to the twelfth aspect of the present invention, when one of the first lighting unit and the second lighting unit is turned on, the other is turned off. Thereby, since the 1st lighting unit and the 2nd lighting unit are not lighted simultaneously, the effect of each lighting unit is fully achieved, without the effect by one lighting unit being influenced by the other lighting. .

  According to the thirteenth aspect of the present invention, since the first lighting unit is formed integrally with the second lighting unit, it is easy to install compactly as a lighting device. Moreover, since the distance of a 1st lighting unit and a 2nd lighting unit is near, the control for making it interlock | cooperate can be performed easily.

  According to the fourteenth aspect of the present invention, since the first lighting unit and the second lighting unit are separated, each lighting unit can be installed at an optimal position according to the purpose.

  According to the fifteenth aspect of the present invention, before sleep, the entire room is illuminated with warm-colored light to improve the user's sleep. Moreover, the quality of sleep can be improved by irradiating the user's face with 1500 lx light immediately before the scheduled wake-up time to activate serotonin.

  According to the sixteenth aspect of the present invention, the entire room is illuminated with cherry-colored light before sleeping, thereby shifting to a state in which the parasympathetic nerve is dominant during sleep. For this reason, if the cherry color light is irradiated, the quality of sleep is further improved as compared with the case where the warm color light is irradiated.

  According to the seventeenth aspect of the present invention, the user can not only adjust in advance so that light is emitted in a specific direction when the first unit is turned on, but also has excellent design. Providing the decorative layer improves the design of the ceiling light when it is turned off, and makes it easier to harmonize the ceiling light with the design of the surrounding furniture.

It is a perspective view which shows the external appearance of the ceiling light which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the external appearance of a square ceiling light. It is a top view of the high illumination intensity unit integrated in the ceiling light shown in FIG. It is sectional drawing which shows the structure of the high illumination intensity illumination part shown in FIG. It is a perspective view which shows the structure of the uniaxial louver film stuck on the surface of the high illumination intensity illumination part shown in FIG. It is sectional drawing which shows a motion of the high illuminance unit shown in FIG. 4, More specifically, (A) is sectional drawing which shows a structure and movement of a high illuminance unit, (B) is the high illuminance incorporated in the ceiling light. It is sectional drawing which shows a motion of a unit. It is a figure which shows how it looks when the high illuminance illumination part of the high illuminance unit shown in FIG. 3 is seen, and more specifically, (A) shows the appearance when the high illuminance illumination part is viewed from the front. It is a figure and (B) is a figure which shows how it looks when the high illumination intensity illumination part is seen from the peripheral part. It is a figure which shows the relationship between a user's position and the appearance of a lens surface, when the high illumination intensity illumination part shown in FIG. 3 inclines with respect to a normal illumination unit. It is a perspective view which shows the structure of the biaxial louver film which can be used for the high illumination intensity illumination part shown in FIG. It is a top view of the high illumination intensity unit of the state which stuck the biaxial louver film shown in FIG. 9 on the lens surface. It is a figure for demonstrating the irradiation angle of the high illumination intensity illumination part shown in FIG. It is a figure for demonstrating 1/10 beam angle. It is a figure for demonstrating the viewing angle of a louver film. It is a figure which shows the case where a zero viewing angle is larger than an irradiation angle. It is a figure which shows the case where an irradiation angle and a 1/10 viewing angle are equal. It is a figure which shows the case where the range of a zero viewing angle is narrower than the range of an irradiation angle. It is a figure which shows the case where the range of an irradiation angle and a zero viewing angle is equal. It is a figure which shows the influence which the thickness and pitch of a louver film have on a viewing angle. It is a figure which shows a state when irradiating light of high illumination intensity to the user's face in sleep which is the application example in 1st Embodiment. It is a figure which shows the external appearance of the ceiling light of the 2nd Embodiment of this invention. It is a top view of the high illumination intensity unit integrated in the ceiling light shown in FIG. It is a figure which irradiates light to the two beds set | placed indoors by the ceiling light shown in FIG. In the 3rd Embodiment of this invention, it is a figure which shows the use condition of the ceiling light in which the high illumination intensity unit was integrated. In the 3rd Embodiment of this invention, it is a figure which shows the use condition of the ceiling light in which the high illumination intensity unit was installed separately from the normal illumination unit. It is a figure which shows the external appearance of the ceiling light of the 4th this embodiment of this invention. It is a figure which shows the structure of the high illumination intensity unit contained in the ceiling light of the 4th this embodiment of this invention. It is a figure which shows the relationship between the uniaxial louver film provided in the surface of the high illumination intensity unit contained in the ceiling light of the 4th this embodiment of this invention, and a decoration layer. It is a figure which shows the conventional state which irradiated the high illuminance light to the user's face in sleep. It is a figure which shows the conventional state which irradiated the high-illuminance light to the chest of the user who is sleeping.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<1. First Embodiment>
<1.1 Configuration of liquid crystal display device>
FIG. 1 is a perspective view showing an appearance of a ceiling light 100 according to the first embodiment of the present invention. As shown in FIG. 1, the round ceiling light 100 according to the present embodiment is installed on the ceiling of a household bedroom or a hospital room, and surrounds the high illuminance unit 10 disposed in the center and the high illuminance unit 10. And a normal lighting unit 80 arranged as described above. The shape of the ceiling light 100 is not limited to a round shape, and may be a square ceiling light 101 as shown in FIG.

  FIG. 3 is a plan view of the high illuminance unit 10 incorporated in the ceiling light 100 shown in FIG. As shown in FIG. 3, the high illuminance unit 10 includes a high illuminance illumination unit 20 and a circuit unit 25. The high illuminance illumination unit 20 includes a plurality of LEDs (not shown), a plurality of lenses 50, and a louver film 60. Including. The circuit unit 25 houses a drive circuit (not shown) that controls lighting / extinguishing of LEDs, emission color, and the like, and controls the emission color of each LED. In order to improve the sleep quality of the user, the user's face must be irradiated with at least light having an illuminance of 1500 lx or more. Therefore, the high-illuminance illumination unit 20 described in the present specification refers to an illumination unit that emits light having an illuminance of 1500 lx or more on the user's face.

  FIG. 4 is a cross-sectional view illustrating a configuration of the high-illuminance illumination unit 20 illustrated in FIG. As shown in FIG. 4, the high-illuminance illumination unit 20 includes a plurality of LEDs 40 attached to the substrate 30, a plurality of lenses 50 that emit light from each LED 40 in a specific direction, and a louver film 60 stacked in this order. As a result, they are integrally formed. One lens 50 is provided for each LED 40 and controls the light emission direction of the LED 40. In addition, the structure of the louver film 60 and the role of the louver film 60 in the high illumination intensity illumination part 20 are mentioned later.

  FIG. 5 is a perspective view showing the configuration of the uniaxial louver film 60 attached to the surface of the high-illuminance illumination unit 20 shown in FIG. As shown in FIG. 5, the louver film 60 is configured such that a plurality of light shielding layers 61 having a rectangular shape are arranged in parallel, and a transparent layer 62 is sandwiched between the light shielding layers 61. Specifically, the light shielding layers 61 are arranged such that their long sides extend in the X direction, and are arranged at a predetermined pitch in the Y direction. In this way, in the louver film (uniaxial louver film 60) including the light shielding layer 61 extending only in one direction, each long side direction of the light shielding layer 61 is perpendicular to the inclination angle adjusting axis 70 as shown in FIG. It is stuck on the high illuminance illumination part 20 as follows.

  Instead of the louver film 60, a plate-like louver panel may be provided on the surface of the lens 50. All of these louvers are made of acrylic resin, polycarbonate resin, silicone resin, and the like, and the light shielding layers 61 and the transparent layers 62 are alternately arranged, so that the translucency is high. In particular, since the louver film is thin, the thickness of the high-illuminance illumination unit 20 to which the louver film 60 is attached can be reduced to reduce the weight. On the other hand, since the louver panel is thicker than the louver film, it has excellent mechanical strength.

  The angle of the high illuminance illumination unit 20 can be adjusted so that the light from the LED 40 can be emitted to a desired position by the high illuminance illumination unit 20. 6 is a cross-sectional view showing the movement of the high illuminance unit 10. More specifically, FIG. 6A is a cross-sectional view showing the configuration and movement of the high illuminance unit 10, and FIG. 6B is a ceiling light. FIG. 4 is a cross-sectional view showing the movement of the high illuminance unit 10 incorporated in 100. As shown in FIGS. 6A and 6B, the high illuminance unit 10 includes a high illuminance illumination unit 20 in which a high luminance LED and a lens are arranged, and a circuit unit 25 that houses a drive circuit. The circuit unit 25 is fixed to the main body 85 of the ceiling light. The high illuminance illumination unit 20 is rotatably mounted around the circuit unit 25 with the tilt angle adjustment shaft 70 as a central axis, and can be fixed at an arbitrary angle. For this reason, the light from the high illuminance illumination unit 20 can be irradiated to a desired position by fixing the high illuminance illumination unit 20 at a desired angle and turning it on.

  A fixed portion 21 is provided on the back surface of the high illuminance illumination unit 20. The fixing unit 21 fixes the high illuminance illumination unit 20 by using a push lock, a push open latch, or a magnet when the high illuminance illumination unit 20 is housed in the main body 85 of the ceiling light 100. The inclination angle of the high illuminance illumination unit 20 is adjusted manually or by an electric system using a servo motor. In the case of the electric system, the user can adjust the tilt angle of the high illuminance illumination unit 20 from a remote position using a remote controller.

  FIG. 7 is a view showing how the high illuminance illumination unit 20 of the high illuminance unit 10 shown in FIG. 3 is seen. FIG. 7A shows the high illuminance illumination unit 20 viewed from the front. FIG. 7B is a diagram showing how the high illuminance illumination unit 20 is viewed from the periphery thereof. Since the louver film 60 is stuck on the surface of the lens 50, the surface of the lens 50 arranged in a honeycomb shape is shown to a user in front of the high illumination illumination unit 20 as shown in FIG. Can be seen. However, since the louver film 60 is provided to the user at a position deviated from the front of the high illuminance illumination unit 20, the surface of the lens 50 cannot be seen as shown in FIG.

  FIG. 8 is a diagram illustrating a relationship between the position of the user and the appearance of the surface of the lens 50 when the high-illuminance illumination unit 20 is inclined with respect to the normal illumination unit 80. As shown in FIG. 8, when the user is in front of the high illumination illumination unit 20, the surface of the lens 50 arranged in a honeycomb shape is visible. At this time, since the user is within the irradiation range of the high illuminance illumination unit 20, the high illuminance illumination unit 20 is so arranged that the light is emitted to the “face of the sleeping user” at the desired position when getting up. The tilt angle can be adjusted in a state where is turned off. On the other hand, since the lens surface cannot be seen when the user turns to the left-right direction and the back side of the high-illuminance illumination unit 20 when the light is turned off, the user does not feel uncomfortable when viewing the lens surface.

  Thus, in the present embodiment, the light of the LED 40 is controlled to be emitted in a specific direction by passing through the lens 50, and further in a specific direction by adjusting the inclination angle of the high illumination illumination unit 20. Irradiated. For this reason, even if the louver film 60 is not provided on the surface of the lens 50, light is not irradiated in directions other than a specific direction. However, by further providing the louver film 60, the surface of the lens 50 can be seen only when the user views the high illumination illumination unit 20 from a specific direction, and when viewed from the other direction, the lens 50 can be seen. The surface becomes invisible. By providing the louver film 60 having such a role, the user can easily recognize that the direction in which the surface of the lens 50 can be seen is the light irradiation direction of the high illuminance illumination unit 20. For this reason, the user can adjust the irradiation direction of the light emitted from the high illuminance illumination unit 20 when the high illuminance illumination unit 20 is turned off.

  The normal illumination unit 80 provided so as to surround the high illuminance unit 10 is a unit for illuminating the entire room, and a plurality of LEDs (not shown) are arranged on the substrate. However, unlike the case of the high illuminance unit 10, the normal illumination unit 80 does not irradiate the light of the LED only to a specific position, but irradiates the entire room uniformly. For this reason, the lens 50 and the louver film 60 are not provided, and the LED is covered with a cover so as not to be directly visible to the user. Further, since the substrate on which the LED of the normal illumination unit 80 is attached is used in a state of being fixed to the ceiling light 100, unlike the case of the high illuminance unit 10, an inclination angle adjusting axis is not provided.

  Similarly to the case of the high illuminance unit 10, the normal illumination unit 80 also includes a drive circuit that drives each LED and controls the emission color and the like. The LED drive circuit provided in the normal illumination unit 80 and the LED 40 drive circuit provided in the high illuminance unit 10 are formed on a single substrate provided in the circuit unit 25 of the high illuminance unit 10. It may be formed on a plurality of substrates.

  A louver film (biaxial louver film) 60 in which light shielding layers 61 extending in directions orthogonal to each other are combined may be attached to the high-illuminance illumination unit 20. FIG. 9 is a perspective view showing the configuration of the biaxial louver film 60, and FIG. 10 is a plan view of the high illuminance unit 10 in a state where the biaxial louver film 60 shown in FIG. . As shown in FIG. 9, the biaxial louver film 60 has a plurality of light shielding layers 61 whose long sides extend in the X direction shown in FIG. 9 at a predetermined pitch in the Y direction, and a transparent layer between the light shielding layers 61. A louver 63 sandwiched between 62 and a light shielding layer 61 whose long sides extend in the Y direction are arranged at a predetermined pitch in the X direction, and a louver 64 between which the transparent layer 62 is sandwiched is laminated. It is configured. Thereby, when adjusting the emission direction of the light from the high illuminance illumination unit 20, the user can see the lens surface only from the front of the high illuminance illumination unit 20, and any direction around the high illuminance unit You cannot see the lens surface. As a result, compared to the case where the uniaxial louver film 60 is attached to the high-illuminance illumination unit 20, when the biaxial louver film 60 is attached, the angle at which the honeycomb-shaped lens surface can be seen is narrowed. The discomfort experienced is further reduced.

  In this specification, a lighting fixture including the ceiling light 100 is referred to as a “lighting device”, the high illumination unit 10 is referred to as a “first lighting unit”, and the normal lighting unit 80 is referred to as a “second lighting unit”. There is. Further, instead of the LED 40, a laser light source, an organic EL element, a small light bulb, or the like can be used. These may be collectively referred to as “light source”, and the louver film 60 and the louver panel may be collectively referred to as “louver”. .

<1.2 Definition of irradiation angle and viewing angle>
Before describing the relationship between the irradiation angle of the high illumination illumination unit 20 and the viewing angle of the louver film 60, the definition of the irradiation angle and the viewing angle used in the following description will be described. FIG. 11 is a diagram for explaining the irradiation angle of the high illumination illumination unit 20. In this specification, it is assumed that the irradiation angle is 1/10 beam angle. FIG. 12 is a diagram for explaining a 1/10 beam angle. As shown in FIG. 12, the 1/10 beam angle means that the direction of the maximum luminous intensity of the light source light is 1/10, the direction of the maximum luminous intensity when the direction of the maximum luminous intensity of the light source light is 0 degree. An angle that is twice the angle formed by

  FIG. 13 is a view for explaining the viewing angle of the louver film 60. As shown in FIG. 13, the viewing angle of the louver film 60 is a range that can be seen through the louver film 60, that is, a full-angle range in which the normalized light transmittance is larger than “0”. The angle in the front direction is set to 0 degree. The 1/10 viewing angle refers to a full-angle range in which the normalized value of the light transmittance is “1/10” or more, as shown in FIG. In the present specification, when it is necessary to distinguish the 1/10 viewing angle from the viewing angle representing a full-angle range in which the normalized light transmittance is larger than “0”, the latter viewing angle is expressed as “ Sometimes referred to as “zero viewing angle”. On the other hand, since the irradiation angles in this specification are all 1/10 beam angles, they are simply referred to as “irradiation angles” in this specification.

<1.3 Magnitude relationship between irradiation angle and viewing angle>
The relationship between the irradiation angle of the high illuminance illumination unit 20 and the viewing angle of the louver film 60 and the present embodiment will be described. In FIGS. 14 to 17 showing the magnitude relationship between the illumination angle of the high-illuminance illumination unit 20 and the viewing angle of the louver film 60 described below, the horizontal axis represents the angle of the illumination angle and viewing angle from 0 degrees to the plus direction. The left vertical axis indicates the normalized light transmittance of the louver film 60, and the right vertical axis indicates the normalized luminous intensity of the LED 40. In the following description, in any case, the range of the irradiation angle (1/10 beam angle) is 30 ° or less in all angles, and the viewing angle is changed.

  Further, in the following description, when determining the magnitude relationship between the irradiation angle and the viewing angle, they both become not only positive values but also negative values. For this reason, it is necessary to compare their absolute values when determining the magnitude relationship. However, in the following description, “absolute value” is omitted.

  First, a case where the viewing angle is larger than the irradiation angle will be described. FIG. 14 is a diagram illustrating a case where the zero viewing angle is larger than the irradiation angle. As shown in FIG. 14, the range of the zero viewing angle is 150 ° or less at full angle, and is wider than the case of 30 ° or less at full angle, which is the range of the irradiation angle. In this case, when the user views the high illuminance illumination unit 20 from a position within the range of the irradiation angle, the light from the high illuminance illumination unit 20 is irradiated to the user if the high illuminance illumination unit 20 is turned on. If the light is turned off, the user can see the surface of the lens 50. For this reason, a user can adjust so that light may be irradiated in a desired direction by adjusting the inclination angle of the high illuminance illumination unit 20 when the high illuminance illumination unit 20 is turned on with the light off. it can.

  However, when the user is outside the illumination angle range and within the zero viewing angle range, the light from the high illumination illumination unit 20 is used even if the high illumination illumination unit 20 is turned on. The person is not irradiated. For this reason, the user cannot adjust the inclination angle of the high illuminance illumination unit 20 when the light is off so that the light from the LED 40 is irradiated to a desired position when the high illuminance illumination unit 20 is turned on. In addition, since the surface of the lens 50 can be seen by the user who is outside the irradiation angle, the user can easily feel discomfort.

  Next, a case where the irradiation angle is equal to the 1/10 viewing angle will be described. FIG. 15 is a diagram illustrating a case where the irradiation angle is equal to the 1/10 viewing angle. As shown in FIG. 15, since the range of the irradiation angle is 30 ° or less in full angle, the range of the 1/10 viewing angle is also set to 30 ° or less in full angle. In this case, when the user looks at the high illuminance illumination unit 20 from a position within the range of the irradiation angle, the light from the high illuminance illumination unit 20 is irradiated to the user if the high illuminance illumination unit 20 is turned on, If it is turned off, the user can see the surface of the lens 50. For this reason, a user can adjust so that light may be irradiated to a desired position by adjusting the inclination angle of the high illumination illumination unit 20 when the illumination is turned on with the high illumination illumination unit 20 turned off. it can.

  Moreover, the position outside the range of the irradiation angle is also a position outside the range of the 1/10 viewing angle. Thereby, if the user is at a position outside the range of the viewing angle, the light from the high illumination illumination unit 20 is not irradiated to the user, and even if the user looks at the high illumination illumination unit 20, the lens 50 Since the surface is not visible, the user does not feel uncomfortable.

  Next, a case where the zero viewing angle range is narrower than the irradiation angle range will be considered. FIG. 16 is a diagram illustrating a case where the range of the zero viewing angle is narrower than the range of the irradiation angle. As shown in FIG. 16, the range of the zero viewing angle is as narrow as 20 ° or less in full angle compared to the case where the range of irradiation angle is 30 ° or less in full angle. In this case, the user who is in a position within the range of the zero viewing angle is irradiated with the light from the high illuminance illumination unit 20 if the high illuminance illumination unit 20 is turned on, and the high illuminance illumination unit 20 is turned off. If so, the user can see the surface of the lens 50. For this reason, the user can adjust the inclination angle of the high illuminance illumination unit 20 when the light is off so that the light from the LED 40 is irradiated to a desired position when the high illuminance illumination unit 20 is turned on.

  However, the angle variation that occurs when the high illuminance unit 10 is attached to the ceiling light 100 cannot be ignored, and the margin of the tilt angle of the high illuminance illumination unit 20 is reduced. Thereby, since the range of the adjustable inclination angle of the high illuminance illumination unit 20 becomes narrow, the range of the irradiation angle becomes narrow, and there arises a problem that the light use efficiency of the LED 40 is lowered.

  As described above, since the viewing angle range is too wide or narrower than the irradiation angle range, there is a problem. Therefore, the case where the range of the viewing angle of the louver film 60 and the range of the irradiation angle of the high illuminance illumination unit 20 are substantially equal will be examined in more detail.

  First, consider the case where the range of 1/10 viewing angle is slightly wider than the range of irradiation angles. Similarly to the case shown in FIG. 14, the user who is at a position where the 1/10 viewing angle is slightly larger than the irradiation angle, the light from the high illuminance illumination unit 20 is turned off with the high illuminance illumination unit 20 turned off. The inclination angle of the high illuminance illumination unit cannot be adjusted so as to emit light in a desired direction. For this reason, the range of the 1/10 viewing angle is the range of the irradiation angle due to the allowable variation in the positional relationship of the LED 40, the lens 50, and the louver film 60 that occurs in the manufacturing process of the ceiling light 100 including the high-illuminance illumination unit 20. The range of manufacturing variation that is slightly wider than this is an allowable limit, and it is not preferable to adjust the 1/10 viewing angle to be larger than the irradiation angle.

  Next, a case where the irradiation angle and the range of the zero viewing angle are equal will be described. FIG. 17 is a diagram illustrating a case where the range of the irradiation angle and the zero viewing angle are equal. As shown in FIG. 17, the range of the zero viewing angle is about 2 to 4 ° wider than the range of the 1/10 viewing angle. Within the range of 1/10 viewing angle, the irradiation direction of light when the high illuminance illumination unit 20 is turned on matches the range in which the lens surface can be seen when the light is turned off. For this reason, the irradiation direction of the light at the time of lighting of the high illumination intensity illumination part 20 can be adjusted by adjusting the inclination-angle of the high illumination intensity illumination part 20 at the time of light extinction. On the other hand, outside the range of the zero viewing angle, even if the high illumination illumination unit 20 is turned on, the light transmittance of the louver film 60 is “0”, so that no light is irradiated. Further, the lens surface cannot be seen even when the high illumination illumination unit 20 is viewed when the light is turned off.

  The handling of the range between the zero viewing angle and the 1/10 viewing angle will be described. Since this range is within the range of the viewing angle as described above, it is a range where light is irradiated. However, in this range, the luminous intensity of the irradiated light is low, and the light transmittance of the louver film 60 is also low, so that it can be considered substantially the same as outside the range of the zero viewing angle. In addition, since this range is a very narrow range of 2 to 4 ° as described above, even if it is considered substantially the same as outside the range of the zero viewing angle, it is given to the adjustment of the light emission direction performed when the light is turned off. The impact is considered small. For this reason, in this specification, the range between the zero viewing angle and the 1/10 viewing angle is treated as outside the range of the zero viewing angle.

  As described above, even when the irradiation angle range is about 2 to 4 ° larger than the zero viewing angle range, the user can use the high illumination illumination unit 20 as in the case where the irradiation angle is equal to the 1/10 viewing angle. The tilt angle can be adjusted. However, if the 1/10 viewing angle is larger than the irradiation angle, the user cannot adjust the tilt angle of the high illumination illumination unit 20. From the above, it can be seen that when the viewing angle and the irradiation angle are substantially equal, the irradiation angle is in the range of 1/10 viewing angle or more and zero viewing angle or less.

  FIG. 18 is a diagram showing the influence of the thickness and pitch of the louver film 60 on the viewing angle. From FIG. 18, when the viewing angle when the thickness and pitch of the louver film 60 are both the reference values is used as the reference value, the viewing angle becomes narrower if the thickness is increased or the pitch is decreased. On the other hand, it can be seen that the viewing angle becomes wider as the thickness becomes thinner or the pitch becomes rougher.

<1.4 Application example>
FIG. 19 is a diagram illustrating a state when light of high illuminance is irradiated on the face of a user who is sleeping. As shown in FIG. 19, if the inclination of the high illuminance unit 10 is adjusted so that light is directly irradiated on the face of the sleeping user, the light spreading in an elliptical shape is irradiated to the sleeping user. . At this time, in order to irradiate light to both eyes of the sleeping user, the length of the ellipse in the short axis direction needs to be at least about 150 mm. For that purpose, it turned out that the irradiation angle of the high illumination intensity illumination part 20 needs to be 4 degrees or more and 30 degrees or less. For example, in a room with an average ceiling height of 2400 mm, when the direction in which the light from the high illuminance illumination unit 20 is irradiated is set to a direct downward direction, the length in the minor axis direction of the irradiation surface is set to 150 mm or more. The lower limit of the irradiation angle needs to be about 4 °. On the other hand, when the installation place of the high illuminance unit 10 is a place other than the ceiling and is a close distance of about 300 mm, the upper limit value of the irradiation angle is set to about 30 °. Thereby, the length of the short axis direction of an irradiation surface can be 150 mm or more. In addition, the shape of the irradiation surface when irradiating the face of the user during sleep is not limited to an ellipse, and may be a circle or a rectangle.

On the other hand, from the relationship between the irradiation angle and the zero viewing angle, in order to make the zero viewing angle of the louver film 60 coincide with the irradiation angle of the high illuminance illumination unit 20, the zero viewing angle is also 4 ° or more and 30 ° or less. There is a need. Further, as shown in FIG. 15, when the irradiation angle is equal to the 1/10 viewing angle instead of the zero viewing angle, the allowable range is further widened, and the 1/10 viewing angle is 4.8. More than 36 ° and less than 36 °. From the above, the relationship between the irradiation angle and the viewing angle is expressed by the following equation (1).
1 ≦ Luba viewing angle / High illumination unit irradiation angle ≦ 1.2 (1)

<1.5 Effect>
According to the present embodiment, the light of the LED 40 is controlled to be emitted in a specific direction by passing through the lens 50, and is further irradiated to a desired position by adjusting the inclination angle of the high illumination illumination unit 20. The For this reason, even if the louver film 60 is not provided on the surface of the lens 50, the light of the LED 40 is not irradiated to a position other than a desired position. However, by providing the louver film 60 on the surface of the lens 50 and making the irradiation angle of the high illuminance illumination unit 20 equal to the viewing angle of the louver film 60, the light emitted from the high illuminance illumination unit 20 is irradiated. The position to be adjusted can be adjusted in a state where the high illuminance illumination unit 20 is turned off. Thereby, the user can irradiate the desired position with the light from the high illuminance illumination unit 20 without feeling dazzling. Moreover, since the user can reduce the position where the lens surface arranged in a honeycomb shape can be seen when the high illumination illumination unit 20 is turned off, the user's discomfort can be reduced.

<2. Second Embodiment>
In the first embodiment, it has been described that the high illuminance unit 10 incorporated in one ceiling light 100 is one. However, two or more high illuminance units 10 may be incorporated in one ceiling light 100. FIG. 20 is a diagram showing the appearance of the ceiling light 100 of the present embodiment, and FIG. 21 is a plan view of the high illuminance unit 10 incorporated in the ceiling light 100 shown in FIG.

  Unlike the case shown in FIG. 3, the high illuminance unit 10 shown in FIG. 21 is divided into two partial units 23 and 24 by an inclination angle adjusting shaft 71 indicated by a thick line at the center. These partial units 23 and 24 are driven so as to emit light with high illuminance independently of each other. For example, as shown in FIG. 22, when two beds 90 are placed in a room, the user's face of each bed 90 can be irradiated with high-intensity light.

  In this way, by incorporating the high illuminance unit 10 divided into a plurality of units into one ceiling light 100, a plurality of subjects to be irradiated with high illuminance light in a bedroom, hospital, nursing facility, etc. When it is, each user can be irradiated with light with high illuminance at the same time.

  In addition, by providing a timer mechanism for each of the partial units 23 and 24, even when a plurality of users are in the same room, the time for starting the irradiation of light with high illuminance is changed in accordance with the scheduled wake-up time of each target person. be able to. Further, the tilt angle can be adjusted for each of the partial units 23 and 24 by adjusting the two tilt angle adjusting shafts 70 and 71, respectively. Thereby, it becomes possible to irradiate the user's face with high-intensity light wherever the user is in the room, and the degree of freedom of the arrangement of the bed 90 is increased.

<3. Third Embodiment>
Operations of the high illuminance unit 10 and the normal illumination unit 80 included in the ceiling light 100 according to the third embodiment will be described. FIG. 23 is a diagram illustrating a usage state of the ceiling light 100 in which the high illuminance unit 10 is incorporated. The ceiling light 100 is equipped with a function (circadian function) for changing brightness and color tone according to a time zone and a timer function in consideration of human biological rhythm. As described in the first embodiment, the high illuminance unit 10 is disposed at the center of the ceiling light 100, and the normal illumination unit 80 is disposed so as to surround the high illuminance unit 10.

  It is said that if a user is exposed to light containing a lot of blue components before sleeping, it may cause insomnia. Therefore, the user's face before sleeping is irradiated with warm-colored light with reduced brightness emitted from the normal lighting unit 80 so that the user can sleep well. Further, for a while after waking up immediately before the scheduled wake-up time, the user's face is irradiated with white light with high illuminance emitted from the high illuminance unit 10. Thereby, in the user's brain, serotonin, which is one of the brain substances, is activated, and the quality of sleep of the user is enhanced.

  Furthermore, if a cherry color (light pink) light is irradiated instead of a warm color light as a light irradiated to the user before sleep, it shifts to a state in which the parasympathetic nerve is dominant during sleep. For this reason, if the cherry color light is irradiated, the quality of sleep is further improved as compared with the case where the warm color light is irradiated. The color of the light emitted from the LEDs of the normal illumination unit 80 and the high illuminance unit 10 is controlled by the drive circuit provided in the circuit unit 25 of the high illuminance unit 10 as described in the first embodiment. The

  In the ceiling light 100 according to the third embodiment, the high illuminance unit 10 for irradiating the user's face with high illuminance light and the normal illumination unit 80 for brightening the entire room are separated from each other. May be installed. FIG. 24 is a diagram illustrating a usage state of the ceiling light in which the high illuminance unit 10 is installed separately from the normal lighting unit 80. As shown in FIG. 24, the high illuminance unit 10 and the normal illumination unit 80 are separated and installed on the ceiling, and they operate in conjunction with each other. Since the operations of the high illuminance unit 10 and the normal illumination unit 80 are the same as the operations of the ceiling light shown in FIG. 23, the description thereof is omitted. In addition, the installation place of the high illumination intensity unit 10 is not limited to a ceiling, For example, a bedside, a wall surface, etc. may be sufficient.

  As shown in FIG. 22, when two beds 90 are placed in a room and a user is sleeping on each bed 90, it is necessary to irradiate each user's face with high-intensity light. is there. In this case, two high illuminance units 10 separated from the normal illumination unit 80 are installed. Thereby, since each user can be irradiated with light with high illuminance, the sleep quality of each user can be improved. When a plurality of high illuminance units 10 are installed, each high illuminance unit 10 is controlled in conjunction with the normal illumination unit 80.

  Further, in the present embodiment, the high illuminance unit 10 has been described as an example of irradiating light to a user immediately before waking up. However, as other uses of the high illuminance unit 10, for example, fine work such as sewing It can also be used to facilitate the work by illuminating the hand of the worker who is doing.

<2. Fourth Embodiment>
FIG. 25 is a diagram illustrating an appearance of the ceiling light 102 according to the present embodiment. The ceiling light 102 shown in FIG. 25 includes a high illuminance unit 10 disposed in the center and a normal illumination unit 80 disposed so as to surround the high illuminance unit 10, similarly to the ceiling light 100 illustrated in FIG. 1. ing.

  FIG. 26 is a diagram illustrating a configuration of the high illuminance unit 10. As shown in FIG. 26, a lens 50 is provided corresponding to each of the plurality of LEDs 40 arranged on the entire surface of the high illuminance unit 10, and the lens 50 is covered with a louver film (not shown) including a decorative layer 92. Yes.

  FIG. 27 is a diagram illustrating the high-illuminance illumination unit 20 in which the uniaxial louver film 60 including the decoration layer 92 is provided on the lens surface. A louver film 60 shown in FIG. 27 is a uniaxial louver film 60 in which the light shielding layers 61 and the transparent layers 62 shown in FIG. The decorative layer 92 is formed so as to transmit light by forming through holes in the shape of a pattern in the light shielding layers 61 and the transparent layers 62 arranged alternately, and filling the through holes with a transparent material equivalent to the transparent layer 62. It consists of the layer made.

  When the high illuminance illuminating unit 20 is turned on, when the high illuminance illuminating unit 20 is viewed from the front direction within the range of 1/10 viewing angle of the louver film 60, the decoration layer is used for high luminance light. 92 is not visible. However, when the high illuminance illumination unit 20 is viewed from the side direction that is outside the range of the zero viewing angle of the louver film 60, the light of the LED 40 that has passed through the decoration layer 92 is visible. You can see the painted pattern.

  When the high illuminance illumination unit 20 is turned off, when the high illuminance illumination unit 20 is viewed from the front direction within the range of 1/10 viewing angle of the louver film 60, the decorative layer 92 can be seen together with the lens surface. In addition, when the high illumination illumination unit 20 is viewed from the side surface direction outside the range of the zero viewing angle of the louver film 60, environmental light such as sunlight is transmitted through the decoration layer 92, so that the user can use the decoration layer 92. You can see the pattern on

  In this way, the lens surface can be seen only when the high-illuminance illumination unit 20 that is turned off is viewed from the front direction, and the user who has viewed the lens surface from other directions is not responsible for viewing the lens surface. I don't feel pleasure. Further, by providing the ceiling light 102 with the louver film 60 having the decorative layer 92 excellent in design, furniture or the like in which the ceiling light 102 is arranged around the lighting unit 10 when the high illuminance unit 10 is turned on or off. It becomes easy to harmonize with the design.

10 ... High illuminance unit (first lighting unit)
20 ... High illumination intensity illumination unit 23, 24 ... Partial unit 25 ... Circuit unit 40 ... LED (light source)
50 ... Lens 60 ... Louver film (louver)
70, 71 ... tilt angle adjusting shaft 80 ... normal illumination unit (second illumination unit)
92 ... Decorative layer 100 ... Ceiling light

Claims (17)

A lighting device including a first lighting unit capable of irradiating light at a desired position by changing a direction of an emission surface,
The first lighting unit includes:
A plurality of light sources mounted on a substrate;
A plurality of lenses provided corresponding to each of the plurality of light sources;
A louver disposed on a surface of the plurality of lenses,
The plurality of light sources, the plurality of lenses, and the louver are integrally formed,
The illumination device according to claim 1, wherein an irradiation angle of the light source and a viewing angle of the louver are substantially the same. The irradiation angle is a 1/10 beam angle,
The illumination device according to claim 1, wherein the viewing angle is equal to or greater than zero viewing angle and equal to or less than 1/10 viewing angle.     The illumination device according to claim 2, wherein the irradiation angle is 30 ° or less in all angles. The illumination device according to claim 1, wherein the viewing angle and the irradiation angle satisfy the following expression.
1 ≦ viewing angle / irradiation angle ≦ 1.2   The lighting device according to claim 1, wherein the louver has a film shape.   The lighting device according to claim 1, wherein the louver has a panel shape.   The lighting device according to claim 1, wherein the louver includes a plurality of light shielding layers arranged in one direction at a predetermined pitch.   The louver includes a plurality of light shielding layers arranged in one direction at a predetermined pitch and a plurality of light shielding layers arranged at a predetermined pitch in a direction orthogonal to the one direction. The lighting device according to 1. The first lighting unit includes:
An illumination unit including the light source, the lens, and the louver, and capable of adjusting an inclination angle so that light emitted from the light source can be irradiated to a desired position;
A circuit unit that houses a drive circuit that drives the light source,
The lighting device according to claim 1, wherein the circuit unit is fixedly installed, and the lighting unit is rotatably attached to the circuit unit by an inclination angle adjusting shaft.   The illumination device according to claim 9, wherein the illumination unit of the first illumination unit is divided into a plurality of partial units, and the inclination angles of the plurality of partial units can be adjusted independently of each other.   The illumination device according to claim 1, further comprising a second illumination unit that emits light having an illuminance smaller than that of the first illumination unit.   The lighting device according to claim 11, wherein the first lighting unit and the second lighting unit are controlled in conjunction so that when one of the first lighting unit and the second lighting unit is turned on, the other is turned off.   The lighting device according to claim 11, wherein the first lighting unit is integrally formed so as to be surrounded by the second lighting unit.   The lighting device according to claim 11, wherein the first lighting unit and the second lighting unit are installed separately from each other.   The second lighting unit illuminates the entire room in which the user before sleep is present with warm-colored light, and the first lighting unit is provided immediately before the scheduled wake-up time of the user. The illumination device according to claim 13 or 14, wherein the face is irradiated with light having an illuminance of 1500 lx or more.   The second lighting unit illuminates the entire room where the user before sleeping is lit with cherry-colored light, and the first lighting unit is the face of the user immediately before the scheduled wake-up time of the user. The illuminating device according to claim 13 or 14, wherein the light is irradiated with light having an illuminance of 1500 lx or more.   The lighting device according to claim 1, wherein the louver has a decorative layer with a design.

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