JP6487128B1 - Lighting equipment - Google Patents

Abstract

An object of the present invention is to offset the lighting head forward rather than directly below the lighting head without adjusting the direction of the lighting head. An illumination head (4) includes a light source (5), a reflection plate (6), and a diffusion plate (7). The light source (5) is disposed so as to face the reflecting plate (6) in the internal space defined by the curved surface shape of the reflecting plate (6). The optical axis (A) of the light emitted from the light source (5) is oriented in the vertical direction when the illumination head (4) is directed downward. The reflection plate (6) has a curved surface shape that is asymmetric with respect to the optical axis (A), and an irradiation area formed on the irradiation surface in a state where the illumination head (4) faces directly below is an illumination head ( The reflected light reflected from the emitted light is guided in a specific direction so as to be offset in a specific direction with respect to immediately below 4). The diffusing plate (7) is attached to the opening of the reflecting plate (6), and diffuses the reflected light so that the light intensity in the irradiation area becomes uniform.

Description

  The present invention relates to an illumination device including an illumination head, and more particularly to a reflection structure for light emitted from a light source.

  Conventionally, lighting equipment provided with a lighting head is known. For example, Patent Literature 1 discloses a lighting fixture that includes an LED mounting substrate, a housing, and an LED substrate support plate. An LED element that emits short-wavelength light is mounted on the LED mounting substrate. The housing has a reflecting surface provided with a wavelength conversion unit that emits converted light by the short wavelength light of the LED element in the recess. The LED substrate support plate is provided on the inner side of the opening edge of the housing with the inner surface facing the concave bottom surface. An LED mounting substrate is attached to the LED substrate support plate with the light emitting surface of the LED element facing the concave bottom surface of the reflecting surface. It also describes that the image of the light source of the LED element is not directly visible.

  Patent Document 2 discloses a lamp including a plurality of LEDs arranged vertically in the length direction of the lamp with an interval using an LED carrier. Each LED emits light in a specific solid angle area around the center of the light beam. The solid angle area is directed to the lamp reflector for indirect light emission of the lamp. The number of LEDs and / or the spacing of the LEDs is at least 0.2 to 2.5 times the distance between the LEDs where the solid angle areas of all the LEDs are located farthest apart from each other and from the bottom surface of the lamp to the illumination surface distance. , After reflection on the light reflector, is selected to at least partially overlap.

  Patent Document 3 discloses an illumination device that can efficiently use light from a light source for illumination. This illuminating device includes a ring-shaped light source and a reflecting member. The reflecting surface of the reflecting member is a concave curved surface formed in the space by rotating a curve forming a part of an ellipse having two focal points around the central axis. The positional relationship between each LED and the reflecting surface is determined so that all the light within the effective light distribution angle including the optical axis of each LED of the ring-shaped light source strikes the reflecting surface, and the reflecting surface emits from each LED of the ring-shaped light source. The irradiated surface is irradiated with the light reflected by.

Japanese Patent Laid-Open No. 2007-300138 Special table 2015-511017 gazette JP 2017-133984 A

  In a conventional lighting device, in a state where the lighting head faces directly below, an irradiation region formed on the irradiation surface by light irradiation is located immediately below the lighting head. However, depending on the use situation of the user, it is often more convenient for the irradiation region to be located in front (front) rather than directly under the lighting head. As such a situation, for example, a case where the line of sight of a user who reads a book or the like placed in the irradiation area is blocked by the lighting head is assumed. In this case, although it can be dealt with by adjusting the direction of the illumination head diagonally forward, the substantially circular irradiation area is deformed into an elliptical shape, the edge flows and the boundary becomes unclear, In the worst case, a situation close to the user looking directly at the light source can occur.

  This invention is made | formed in view of this situation, The objective is to form the irradiation area | region offset ahead rather than just under an illumination head, without adjusting the direction of an illumination head.

In order to solve this problem, the first invention provides an illumination device including an installation table, an illumination head, and an arm. The illumination head forms an irradiation area on the irradiation surface that is offset forward with respect to a position immediately below the lighting head in a state where the lower surface is parallel to the irradiation surface. The arm connects the installation base and the lighting head. The illumination head includes a first sub light source, a second sub light source, a first reflecting plate, and a second reflecting plate. The second sub light source is disposed offset behind the first sub light source. The first reflecting plate has a curved surface shape that is asymmetric with respect to the optical axis of the light emitted from the first sub-light source, and the lower surface of the illumination head is formed on the irradiation surface in a state parallel to the irradiation surface. The reflected light obtained by reflecting the light emitted from the first sub-light source is guided in a specific direction so that the first irradiation area to be offset is forward with respect to the position immediately below the illumination head. The second reflector than the first reflector is arranged offset forwardly, have asymmetric curved shape with respect to the optical axis of the light emitted from the second sub-light source, the lower surface of the lighting head The second irradiation region formed on the irradiation surface in a state parallel to the irradiation surface is offset forward with respect to directly below the illumination head and overlaps at least a part of the first irradiation region. The reflected light reflected from the light emitted from the second sub-light source is guided in a specific direction so as to spread in the front-rear direction from the first reflection region .

The second invention provides an illumination device including at least an illumination head. Lighting head comprises a first sub-light source, and a second sub-light source, a first reflector, have a second reflector, in parallel to the lower surface irradiated surface, just below the self An irradiation region offset backward is formed on the irradiation surface. The second sub light source is disposed offset from the first sub light source forward. The first reflecting plate has a curved surface shape that is asymmetric with respect to the optical axis of the light emitted from the first sub-light source, and the lower surface of the illumination head is formed on the irradiation surface in a state parallel to the irradiation surface. The reflected light obtained by reflecting the light emitted from the first sub-light source is guided in a specific direction so that the first irradiation area to be offset is forward with respect to the position immediately below the illumination head. The second reflector than the first reflector is arranged offset forwardly, have asymmetric curved shape with respect to the optical axis of the light emitted from the second sub-light source, the lower surface of the lighting head The second irradiation region formed on the irradiation surface in a state parallel to the irradiation surface is offset forward with respect to directly below the illumination head and overlaps at least a part of the first irradiation region. The reflected light reflected from the light emitted from the second sub-light source is guided in a specific direction so as to spread in the front-rear direction from the first reflection region .

Here, in the first or second invention, it is preferable that the inclination of the optical axis with respect to the vertical direction in the second sub-light source is larger than the inclination of the optical axis with respect to the vertical direction in the first sub-light source. In addition, one first sub-light source may be disposed at the front center of the illumination head, and two second sub-light sources may be disposed on the left and right sides of the illumination head. Further, a lens diffusion plate that is provided on the optical axis of the reflected light and diffuses the reflected light at a certain angle may be further provided. In this case, it is preferable that at least a part of the first irradiation region and the second irradiation region overlap each other in a state where the lens diffusion plate is removed. Further, the first reflector and the second reflector reflect the reflection characteristic of the front side edge so that the light beam angle of the reflected light with respect to the vertical direction gradually decreases as it goes toward the front edge. Is preferred. Furthermore, the first reflector and the second reflector have an asymmetric curved surface shape and a cross-sectional shape in which a parabola is inclined with respect to the optical axis of the light emitted from the first sub-light source and the second sub-light source. You may have.

According to the present invention, a reflecting plate is provided for each sub-light source, and the reflected light is guided in a specific direction by each reflecting plate. By combining a plurality of optical systems in this way, at least a part of the irradiation areas can be overlapped while the irradiation area formed on the irradiation surface is offset with respect to the position immediately below the illumination head. In addition, the second irradiation area is offset forward with respect to the position immediately below the illumination head, and extends in the front-rear direction from the first irradiation area while overlapping at least part of the first irradiation area. Thus, when these irradiation regions are overlapped, light that is closer to a circle can be formed.

Front view of lighting equipment Side view of lighting equipment Sectional drawing of the optical system which concerns on 1st Embodiment Illustration of reflection structure Illustration of reflection structure Illustration of reflection structure Illustration of reflection structure Explanatory drawing of the irradiation area formed by the light from the illumination head Diagram showing the light intensity distribution in the irradiated area Cross section of optical system with adjustment mechanism The top view which shows arrangement | positioning of the optical system which concerns on 2nd Embodiment Cross section of left and right optical system Cross section of the central optical system The figure which shows the light intensity distribution of the irradiation area of each light source before diffusion The figure which shows the light intensity distribution of the irradiation area of the synthetic light source before diffusion Diagram showing the light intensity distribution in the irradiated area after diffusion The top view of the optical system concerning a 3rd embodiment Explanatory drawing of the optical system which concerns on the modification of 3rd Embodiment. Diagram showing the light intensity distribution of the irradiated area before diffusion Diagram showing the light intensity distribution in the irradiated area after diffusion

(First embodiment)
FIG. 1 is a front view of a lighting apparatus according to the present embodiment, and FIG. 2 is a side view thereof. The lighting device 1 is used as a desk stand, and mainly includes an installation table 2, an arm 3, and a lighting head 4. The installation base 2 has a substantially cylindrical shape and is placed on an installation surface such as a desk. One end of the arm 3 is attached to the upper part of the installation table 2 and extends upward from the installation table 2. An illumination head 4 is attached to the other end of the arm 3 on the rear side. The direction of the illumination head 4 is adjustable. This figure shows a state in which the illumination head 4 faces slightly forward, but a state where the angle θ formed by the illumination head 4 with respect to the horizontal line H is 0 degrees (θ = 0) is a state in which it is directed downward. In the following description, the front-rear direction of the lighting device 1 is the “X direction”, and the left-right direction is the “Y direction”. In particular, in the present embodiment, the direction opposite to the arm 3 side in the X direction is “front”. And

  FIG. 3 is a cross-sectional view of an optical system built in the illumination head 4. This optical system includes a light source 5, a reflection plate 6, and a lens diffusion plate 7. The light source 5 is composed of a single light emitting unit on which one or a plurality of LEDs as light emitters are mounted, and faces the reflecting plate 6 in an internal space defined by the curved surface shape of the reflecting plate 6. Is arranged. In the present embodiment, the light source 5 is disposed so that the optical axis A of the light emitted from the light head 5 is directed in the vertical direction in a state where the illumination head 4 faces directly below (θ = 0). As will be described later, the light source 5 may be a plurality of light sources in which a plurality of light emitting units are combined.

  The reflector 6 reflects the outgoing light emitted from the light source 5 in the direction of the optical axis A downward. The reflector 6 has a curved shape that is symmetrical with respect to the optical axis A of the light emitted from the light source 5 in the left-right direction (Y direction). As shown in FIG. 3, it has a curved surface shape that is asymmetric with respect to the optical axis A. Thereby, the reflected light reflected by the reflecting plate 6 is guided not forward of the illumination head 4 but ahead of it.

  The inclination and position of the light source 5 are not limited to those shown in FIG. 3, but should be determined as appropriate according to the actual product specifications including the height of the stand. For example, if the light source 5 is tilted forward, the light emitted from the illumination head 4 can be guided further forward, and vice versa for the rear. Further, when the light source 5 is brought closer to the reflecting plate 6, the light irradiation region is expanded, and when the light source 5 is moved away from the reflecting plate 6, the opposite is true.

  Hereinafter, the reflecting structure according to the present embodiment will be described in detail with reference to FIGS. 4 to 7. In the present embodiment, as an example of the reflector 6, a reflector having a parabolic cross section in the front-rear direction is used. Specifically, the following aspherical expression is used, and depending on the value of k, the base surface (the first term on the right side) is a spherical surface (k = 0), an elliptical surface (−1 <k <0), a free surface. They are classified as an object plane (k = -1) and a hyperboloid (k <-1). In the present embodiment, as an example, K = -1, r = 30, and h = 54.772.

  First, consider a parabola as shown in FIG. When light is emitted upward from the focal point B of the parabola, the reflected light reflected by the reflecting plate 6 is emitted directly below as parallel light. Thereby, a substantially circular irradiation region (light field) is formed on the irradiation surface.

  Next, as shown in FIG. 5, the light source 5 is brought closer to the reflecting plate 6 side from the position of the focal point B, and the optical axis A is inclined by a predetermined angle (for example, 30 degrees) with respect to the focal axis C of the reflecting plate 5. Think about the case. As a result, the direction in which the reflected light is emitted is also tilted and guided obliquely forward rather than directly below the illumination head 4. The irradiation area formed on the irradiation surface is larger than in the case of FIG. 4 and has a crescent shape. Further, the reflected light is not parallel light by bringing the light source 5 closer.

  Then, as shown in FIG. 6, after the inclination of the reflecting plate 6 is returned so that the light source 5 faces directly above, a part of the reflecting plate 6, that is, a portion below the light source 5 is cut by a horizontal line H. To do. As a result, as shown in FIG. 7, the reflected light from the illumination head 4 (reflecting plate 6) is guided obliquely forward in a state where the reflecting plate 6 (illuminating head 4) faces directly below.

  In addition, although the cross-sectional shape of the reflecting plate 6 is preferably an aspherical shape (parabolic shape), it is not limited to this, and any shape can be adopted as long as the reflected light can be guided obliquely forward. May be.

  The lens diffusing plate 7 is provided on the optical axis of the reflected light emitted from the reflecting plate 6 and diffuses the reflected light so that the light intensity in the irradiation region S becomes uniform. The lens diffusing plate 7 is also referred to as an LSD (Light Shaping Diffusers) diffusing plate, forms fine irregularities on the surface of the film, and diffuses incident light at a certain angle by refraction / diffraction action by the irregular structure.

  FIG. 8 is an explanatory diagram of an irradiation region formed by light emitted from the illumination head 4. In a state in which the illumination head 4 faces directly below, the reflected light from the reflecting plate 6 is emitted linearly toward the diagonally forward direction. This reflected light is diffused when passing through the lens diffusion plate 7, but the forward straightness is maintained due to its characteristics. Thereby, the irradiation region D (light field) is formed by being offset forward with respect to the position immediately below the illumination head 4. In other words, in the X direction, the center of the irradiation region D is located outside the front end (front edge) of the illumination head 4.

  FIG. 9 shows the light intensity distribution in the irradiation region D when the lens diffusion plate 7 is not interposed. In FIG. 9, the light intensity is higher in a region indicated by light color (white), and the light intensity is lower in a region indicated by dark color (black). In the light intensity distribution shown in the figure, the lower portion is slightly cut off due to the influence of the stage that supports the light source 5. By interposing the lens diffusing plate 7, the irradiation area D has a substantially circular and uniform intensity distribution.

  As the reflection characteristic of the reflection plate 6 at the front edge, the intersection angle θ of the reflected light emitted from the reflection plate 6, that is, the angle formed by the emission direction of the reflected light with respect to the vertical direction is shown in FIG. As described above, it is preferable to reflect the light so that it gradually decreases toward the front edge. As described above, such non-parallel light is realized by tilting the light source 5 closer to the reflecting plate 6 from the position of the focal point B. Thereby, it can prevent effectively that the irradiation area | region (spot light) formed on an irradiation surface flows ahead, and a boundary becomes unclear.

  As described above, according to the present embodiment, the reflected light is guided obliquely forward by the reflecting plate 6, whereby the irradiation region D formed on the irradiation surface can be offset forward from directly below the illumination head 4. . Thereby, without adjusting the direction of the lighting head 4, it is possible to effectively avoid a situation in which the line of sight of a user reading a book placed directly under the lighting head 4 is blocked by the lighting head 4. Moreover, since the direction of the illumination head 4 may remain in a state immediately below, the irradiation region D has a clear shape with an original substantially circular shape, and a situation in which the user directly looks at the light source 5 hardly occurs.

  Further, according to the present embodiment, the reflection characteristic of the front side edge portion of the reflection plate 6 is reflected such that the light beam angle θ of the reflected light with respect to the vertical direction gradually decreases toward the front side edge portion. Thereby, it can prevent effectively that the irradiation area | region D formed on an irradiation surface flows ahead, and a boundary becomes unclear.

  Note that the state in which the illumination head is directed downward typically means that the lower surface of the illumination head 4 (the surface of the lens diffusion plate 7 in FIG. 3) or the plane constituting the light source 5 is irradiated as shown in FIG. A state parallel to the surface. However, although the lower surface of the illumination head 4 is an effective determination factor, it is not necessarily limited to this. Whether or not the lighting head is facing down should be determined for each actual product in consideration of the overall shape and structure of the actual product (including optical mechanisms). It is. Also, in a system (lighting equipment) that adjusts the lighting head with an electric motor, etc., this neutral initial setting state is often assumed because the state in which the lighting head is facing down is considered to be the initial setting. It is also possible to grasp that the direction of the lighting head in is in a state of facing down. If the system behaves so that the irradiation area D is formed in front of the illumination head when the power is turned on in the initial setting state where the adjustment is not performed by the user, the convenience of the illumination apparatus according to the present invention is improved. Immediate appeal to the user.

  In the present embodiment, the illumination head 4 may be provided with a mechanism that can change the inclination of the optical axis of the light emitted from the light source 5. For example, as shown in FIG. 10, the light emitting unit constituting the light source 5 is provided with a rotating shaft 8 extending in the Y direction of the lighting device 1, and the light source 5 rotates within a predetermined range around the rotating shaft 8. Configure to be free. The light source 5 may be rotated by manually rotating the rotary shaft 8 or automatically by an electric motor or the like. Thereby, the spread and intensity of the emitted light from the illumination head 4 can be arbitrarily adjusted, and the convenience for the user can be further enhanced. Further, if a mechanism for changing the distance of the light emitting unit (light source 5) to the focal point B of the parabola is provided, the focus can be adjusted. At this time, if the rotation shaft 8 is decentered with respect to the light emitting unit, the optical axis inclination adjustment and focus adjustment can be performed simultaneously only by the rotation of the rotation shaft 8. Note that the tilt of the optical axis of the light emitted from the light source 5 and the positional relationship between the light source 5 and the focal point B are fixed to an arbitrary tilt and positional relationship without providing a driving mechanism such as the rotating shaft 8. It is good also as composition to do.

(Second Embodiment)
In the present embodiment, an example will be described in which a plurality of optical systems (sub-light sources) according to the first embodiment described above are combined to form the irradiation region D in front of the illumination head 4 directly below.

  FIG. 11 is a plan view showing the arrangement of the optical system according to the present embodiment. Inside the illumination head 4, three reflectors 6a to 6c are alternately offset in the front-rear direction. Sub-light sources 5a to 5c constituting the light source 5 are arranged on the reflection plates 6a to 6c, respectively. 12 is a cross-sectional view of the left and right optical systems, and FIG. 13 is a cross-sectional view of the central optical system. If the inclination of the optical axes of the light sources 5a and 5c with respect to the vertical direction in the left and right optical systems is θ1, and this inclination in the center optical system is θ2, θ2 is set larger than θ1. Since the other points are the same as those in the first embodiment, description thereof is omitted here.

  FIG. 14 is a diagram showing the light intensity distribution of the irradiation region D before diffusion of the individual sub-light sources 5a to 5c before diffusion, and FIG. 15 is a diagram of the combined light source before diffusion obtained by superimposing the three sub-light sources 5a to 5c. The figure which shows the light intensity distribution of the irradiation area | region D, and FIG. 16 are figures which show the light intensity distribution of the irradiation area | region D after the spreading | diffusion. As an example of these experiments, these figures show distributions when the illumination head 4 has a diameter of about 200 mm, the height of the stand is 300 mm, and a wide range of round light is emitted from a plane parallel to the installation surface. The light irradiation area (FIGS. 14A and 14C) formed by the left and right sub-light sources is in the front-rear direction (left-right direction in the figure) compared to that of the central light source (FIG. 14B). As a result, when three lights are superimposed, light that is closer to a circle is formed (FIG. 15), and the result is that the combined light that is close to the circle is diffused by the diffuser plate 7 (FIG. 16). Can be made more circular and the illuminance can be maintained. Further, the light emitted from the three optical systems is combined, and the irradiation region D is formed in front of the irradiation region D immediately below the illumination head 4.

  Thus, according to the present embodiment, by combining a plurality of optical systems, the irradiation area D formed on the irradiation surface is offset forward from directly below the illumination head 4 as in the first embodiment. be able to.

(Third embodiment)
In the first and second embodiments described above, the example in which the irradiation region D is formed in front of the illumination head is described. However, in this embodiment, a plurality of optical systems (sub-light sources) are combined, An example in which a large and clean substantially circular irradiation region D is formed immediately below the illumination head 4 will be described.

  FIG. 17 is a plan view of the optical system according to the present embodiment. Inside the illumination head 4, four reflecting plates 6a to 6d obtained by cutting the reflecting plate 6 having the above-described reflection characteristics are arranged point-symmetrically, that is, vertically and horizontally. A plurality of sub-light sources 6a to 6d constituting the light source 5 are respectively inclined and disposed on the reflection plates 6a to 6d. However, the relative inclinations of the sub-light sources 6a to 6d with respect to the reflecting plates 6a to 6d are smaller than those of the first and second embodiments, and the reflected light from the reflecting plates 5a to 5d is from directly below the illumination head 4. It is set not to disperse greatly. Further, as shown in FIG. 18, the above-described reflector 6 may be configured as a single ring-shaped reflector 6e.

  FIG. 19 is a diagram showing a light intensity distribution before diffusion of the irradiation region D by the plurality of sub light sources 5a to 5d, and FIG. 20 is a diagram showing a light intensity distribution after diffusion by the lens diffusion plate 7. Through the processing by the lens diffusion plate 7, the four light fields are overlapped, and the light intensity is made uniform in a wide range and a substantially circular shape as the irradiation region D.

  According to this embodiment, by combining a plurality of optical systems, it is possible to form an irradiation region D having a wide range, a substantially circular shape, and a uniform light intensity directly under the illumination head 4.

  In the first and second embodiments described above, the example in which the irradiation region D is formed so as to be offset forward with respect to the position immediately below the illumination head 4 has been described. However, the offset direction is limited to the front. Instead, the present invention broadly includes a form in which the offset is made in one direction with respect to the position immediately below the illumination head 4. Moreover, the illuminating device 1 is not limited to a stand type, and may be comprised only of the illumination head 4 including a clip type, a suspension type, etc.

DESCRIPTION OF SYMBOLS 1 Illumination equipment 2 Installation stand 3 Arm 4 Illumination head 5,5a-5d Light source 6,6a-6e Reflector 7 Lens diffuser 8 Rotating shaft

Claims (7)

In lighting equipment,
An installation stand;
An illumination head that forms an irradiation region on the irradiation surface that is offset forward with respect to a position directly below the irradiation surface in a state where the lower surface is parallel to the irradiation surface;
An arm for connecting the installation base and the lighting head;
The lighting head is
A first sub-light source;
A second sub-light source arranged to be offset rearward from the first sub-light source;
The first sub-light source has a curved surface shape that is asymmetric with respect to the optical axis of the light emitted from the first sub-light source, and the lower surface of the illumination head is formed on the irradiation surface in a state parallel to the irradiation surface. A first reflector that guides reflected light reflected from the light emitted from the first sub-light source in a specific direction so that an irradiation area is offset forward with respect to a position immediately below the illumination head;
The first reflector is disposed behind the first reflector, has a curved shape asymmetric with respect to the optical axis of the light emitted from the second sub-light source, and the lower surface of the illumination head is the irradiation surface. second irradiation region formed on the irradiation surface in parallel with for is offset forward relative to immediately below the lighting head and at least a portion the weight of Ritsutsu of the first irradiation region And a second reflector that guides the reflected light reflected from the light emitted from the second sub-light source in a specific direction so as to spread in the front-rear direction than the first irradiation region. Lighting equipment.   2. The lighting device according to claim 1, wherein an inclination of an optical axis with respect to a vertical direction in the second sub-light source is larger than an inclination of an optical axis with respect to the vertical direction of the first sub-light source. The first sub-light source is arranged one at the front center of the illumination head,
The lighting device according to claim 1, wherein two second sub light sources are arranged on the left and right sides of the lighting head. A lens diffusing plate provided on the optical axis of the reflected light and diffusing the reflected light at a constant angle;
The lighting device according to any one of claims 1 to 3, wherein at least a part of the first irradiation region and the second irradiation region overlap each other in a state where the lens diffusion plate is removed. .   The first reflecting plate and the second reflecting plate reflect the reflection characteristic of the front side edge portion so that the light beam angle of the reflected light with respect to the vertical direction gradually decreases as it goes toward the front side edge portion. The lighting device according to any one of claims 1 to 4, wherein   The first reflecting plate and the second reflecting plate have an asymmetric curved shape, and a parabola is inclined with respect to an optical axis of light emitted from the first sub light source and the second sub light source. The lighting head according to claim 5, wherein the lighting head has a cross-sectional shape. In lighting equipment,
At least an illumination head that forms an irradiation area on the irradiation surface that is offset forward with respect to the position immediately below the self with the lower surface parallel to the irradiation surface;
The lighting head is
A first sub-light source;
A second sub-light source arranged to be offset rearward from the first sub-light source;
The first sub-light source has a curved surface shape that is asymmetric with respect to the optical axis of the light emitted from the first sub-light source, and the lower surface of the illumination head is formed on the irradiation surface in a state parallel to the irradiation surface. A first reflector that guides reflected light reflected from the light emitted from the first sub-light source in a specific direction so that an irradiation area is offset forward with respect to a position immediately below the illumination head;
The first reflector is disposed behind the first reflector, has a curved shape asymmetric with respect to the optical axis of the light emitted from the second sub-light source, and the lower surface of the illumination head is the irradiation surface. second irradiation region formed on the irradiation surface in parallel with for is offset forward relative to immediately below the lighting head and at least a portion the weight of Ritsutsu of the first irradiation region And a second reflector that guides the reflected light reflected from the light emitted from the second sub-light source in a specific direction so as to spread in the front-rear direction than the first irradiation region. Lighting equipment.

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