WO2019138459A1 - 照明機器 - Google Patents

照明機器 Download PDF

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Publication number
WO2019138459A1
WO2019138459A1 PCT/JP2018/000266 JP2018000266W WO2019138459A1 WO 2019138459 A1 WO2019138459 A1 WO 2019138459A1 JP 2018000266 W JP2018000266 W JP 2018000266W WO 2019138459 A1 WO2019138459 A1 WO 2019138459A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
illumination head
reflected
head
Prior art date
Application number
PCT/JP2018/000266
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佑哉 直原
玄 寺尾
Original Assignee
バルミューダ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by バルミューダ株式会社 filed Critical バルミューダ株式会社
Priority to JP2018545519A priority Critical patent/JP6487128B1/ja
Priority to PCT/JP2018/000266 priority patent/WO2019138459A1/ja
Priority to KR1020207015414A priority patent/KR102469791B1/ko
Priority to CN201880076458.1A priority patent/CN111406178B/zh
Priority to TW107136533A priority patent/TWI768136B/zh
Publication of WO2019138459A1 publication Critical patent/WO2019138459A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Definitions

  • the present invention relates to an illumination apparatus including an illumination head, and more particularly to a reflection structure of light emitted from a light source.
  • Patent Document 1 discloses a luminaire including an LED mounting substrate, a housing, and an LED substrate support plate.
  • the LED mounting substrate is mounted with an LED element that emits short wavelength light.
  • the housing has a reflective surface provided with a wavelength conversion portion that emits converted light by the short wavelength light of the LED element in the recess.
  • the LED substrate support plate is provided with the inner side facing the inside of the opening edge of the housing and the bottom surface facing the bottom.
  • the LED mounting substrate is attached to the LED substrate supporting plate with the light emitting surface of the LED element directed to the bottom of the concave portion of the reflecting surface. It is also described 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 vertically arranged in the longitudinal direction of the lamp with an LED carrier. Each LED emits light at a specific solid angle area around the central direction of the light beam. The solid angle area is directed to the lamp reflector for indirect lighting 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 from each other at the lighting surface distance from the bottom of the lamp , After being reflected by the light reflector, selected to at least partially overlap.
  • Patent Document 3 discloses a lighting device capable of efficiently using light from a light source for lighting.
  • the lighting device comprises a ring-shaped light source and a reflecting member.
  • the reflective surface of the reflective member is a concave surface formed in space by rotating a curve forming a part of an ellipse having two focal points by one rotation about the central axis.
  • the positional relationship between each LED and the reflecting surface is determined such that all 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 is emitted from each LED of the ring-shaped light source The light reflected by is irradiated to the irradiation surface.
  • JP 2007-300138 A JP-A-2015-511017 JP, 2017-133984, A
  • the irradiation area formed on the irradiation surface by the irradiation of light is located directly below the lighting head.
  • the user's line of sight reading a book placed in the irradiation area is interrupted by the illumination head.
  • the substantially circular irradiation area is deformed into an elliptical shape, and the edge flows and the boundary becomes unclear. In the worst case, it may happen that the user is close to looking at the light source.
  • the present invention has been made in view of the above circumstances, and an object thereof is to form an irradiation area which is offset to the front rather than directly below the illumination head without adjusting the direction of the illumination head.
  • a first invention provides a lighting apparatus including at least a lighting head.
  • the illumination head has a light source and a reflector.
  • the reflection plate has a curved surface shape that is asymmetric with respect to the optical axis of light emitted from the light source, and the illumination area formed on the illumination surface with the illumination head facing directly below is directed to the position directly below the illumination head.
  • the reflected light that reflects the outgoing light is directed in a specific direction so as to be offset.
  • a second aspect of the invention provides a lighting device including a mounting base, a lighting head, and an arm.
  • An arm connects the mounting base and the illumination head.
  • the illumination head has a light source and a reflector.
  • the reflection plate has a curved surface shape that is asymmetric with respect to the optical axis of light emitted from the light source, and the illumination area formed on the illumination surface with the illumination head facing directly below is directed to the position directly below the illumination head.
  • the reflected light that reflects the outgoing light is directed in a specific direction so as to be offset.
  • the reflection plate offset the irradiation area forward by guiding the reflected light forward.
  • the reflection plate reflects so that the ray angle of the reflected light with respect to the vertical direction gradually decreases toward the front side edge portion.
  • the said reflecting plate may have a cross-sectional shape which inclined the parabola with respect to the optical axis of the light radiate
  • a lens diffusion plate may be further provided, which is provided on the optical axis of the reflected light and diffuses the reflected light at a certain angle so that the light intensity of the irradiation area becomes uniform.
  • the light source may be constituted by a plurality of sub-light sources, and the reflecting plate may reflect light emitted from each of the plurality of sub-light sources and guide it forward as reflected light.
  • the reflection plate by directing the reflected light in a specific direction by the reflection plate, it is possible to offset the irradiation area formed on the irradiation surface with respect to the area directly below the illumination head.
  • FIG. 1 Front view of lighting equipment Side view of lighting equipment Sectional view of an optical system according to the first embodiment Illustration of reflection structure Illustration of reflection structure Illustration of reflection structure Illustration of reflection structure Explanatory view 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
  • Top view of an optical system according to the third embodiment Explanatory drawing of the optical system which concerns on the modification of 3rd Embodiment Diagram showing the light intensity distribution in the irradiated area before diffusion Diagram showing the light intensity distribution of the irradiated area after diffusion
  • FIG. 1 is a front view of the lighting apparatus according to the present embodiment
  • FIG. 2 is a side view thereof.
  • the lighting device 1 is used as a desk stand, and mainly includes an installation stand 2, an arm 3 and a lighting head 4.
  • the installation stand 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 top of the installation stand 2 and extends upward of the installation stand 2.
  • the illumination head 4 is attached to the other end of the arm 3 at the rear.
  • the orientation of the illumination head 4 is adjustable.
  • the front-rear direction of the lighting device 1 is referred to as “X direction”, and the left-right direction is referred to as “Y direction”.
  • the direction opposite to the arm 3 side in the X direction is “forward” I assume.
  • FIG. 3 is a cross-sectional view of an optical system incorporated in the illumination head 4.
  • the optical system includes a light source 5, a reflector 6, and a lens diffuser 7.
  • the light source 5 is constituted by a single light emitting unit on which one or more LEDs as light emitters are mounted, and the light source 5 is opposed to the reflecting plate 6 in the internal space defined by the curved surface shape of the reflecting plate 6 Is located in
  • the light source 5 may be a plurality of light sources in which a plurality of light emitting units are combined.
  • the reflecting plate 6 reflects downward the light emitted from the light source 5 in the direction of the optical axis A.
  • the reflection plate 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), but in the front-rear direction (X direction) As shown in 3, it has a curved surface shape that is asymmetrical with respect to the optical axis A. As a result, the reflected light reflected by the reflecting plate 6 is guided to the front rather than immediately below the illumination head 4.
  • the inclination and position of the light source 5 are not limited to those shown in FIG. 3 and should be appropriately determined according to the specifications of the actual product including the height of the stand. For example, when the light source 5 is tilted forward, the light emitted from the illumination head 4 can be guided further forward, and vice versa. Further, when the light source 5 is brought close to the reflection plate 6, the light irradiation area spreads, and when the light source 5 is moved away from the reflection plate 6, the opposite is true.
  • the reflection structure according to the present embodiment will be described in detail with reference to FIGS. 4 to 7.
  • the light source 5 is moved closer to the reflector 6 from the position of the focal point B, and the optical axis A is inclined at a predetermined angle (for example, 30 degrees) with respect to the focal axis C of the reflector 5 Think about the case.
  • a predetermined angle for example, 30 degrees
  • the emission direction of the reflected light is also inclined, and the light is guided not diagonally below the illumination head 4 but obliquely forward.
  • the irradiation area formed on the irradiation surface is larger than in the case of FIG. 4 and has a crescent shape. Further, by bringing the light source 5 closer, the reflected light is not parallel light.
  • the cross-sectional shape of the reflecting plate 6 is preferably non-spherical (parabolic), it is not limited to this, and any shape may be adopted as long as it is possible to guide reflected light diagonally forward. May be
  • the lens diffusion plate 7 is provided on the optical axis of the reflected light emitted from the reflection plate 6, and diffuses the reflected light so that the light intensity of the irradiation area S becomes uniform.
  • the lens diffusion plate 7 is also referred to as a LSD (Light Shaping Diffusers) diffusion plate, which forms fine asperities on the surface of the film and diffuses incident light to a certain angle by the refraction / diffraction action of the asperity structure.
  • LSD Light Shaping Diffusers
  • FIG. 8 is an explanatory view of an irradiation area formed by the light emitted from the illumination head 4.
  • the reflected light from the reflection plate 6 is linearly emitted toward the obliquely front. This reflected light is diffused when it passes through the lens diffusion plate 7, but the straightness to the front is maintained from the characteristics.
  • the irradiation area D (light field) is formed to be offset forward to the position directly below the illumination head 4. In other words, in the X direction, the center of the illumination area D is located outside the front end (front edge) of the illumination head 4.
  • FIG. 9 shows the light intensity distribution of the irradiation area D when the lens diffusion plate 7 is not interposed.
  • the light intensity is high as the area shown in light (white) and the light intensity is low as the area shown in dark (black).
  • the lower part is slightly broken due to the influence of the table supporting the light source 5.
  • the intersection line angle ⁇ of the reflected light emitted from the reflecting plate 6, that is, the angle formed by the emitting direction of the reflected light with respect to the vertical direction is shown in FIG.
  • Such non-parallel light is realized by tilting the light source 5 from the position of the focal point B toward the reflector 6 as described above. Thereby, it is possible to effectively prevent the illumination region (spot light) formed on the irradiation surface from flowing forward and the boundary becoming unclear.
  • the irradiation area D formed on the irradiation surface can be offset to the front rather than directly below the illumination head 4 by guiding the reflected light obliquely forward by the reflection plate 6 .
  • the irradiation area D has an original substantially circular clear shape, and a situation in which the user looks directly at the light source 5 does not easily occur.
  • the light ray angle ⁇ of the reflected light with respect to the vertical direction is reflected so as to gradually decrease toward the front side edge portion.
  • the lower surface of the illumination head 4 (the surface of the lens diffusion plate 7 in FIG. 3) or the plane forming the light source 5 is illuminated. It is parallel to the plane.
  • the lower surface of the illumination head 4 or the like is an effective determination factor, it is not necessarily limited to this. Whether or not the illumination head is in a state of being directed downward should be determined separately for each actual product in view of the diversity of the overall shape and structure (including optical mechanism) in the actual product. It is.
  • the state in which the illumination head is directly below is often set initially, so this neutral initial setting state It is also possible to consider that the direction of the illumination head in the case is facing downward. If the system behaves such that the irradiation area D is formed in front of the area directly below the lighting head when the power is turned on in the initial setting state where adjustment by the user is not performed, the convenience of the lighting apparatus according to the present invention can be obtained. It can appeal to the user immediately.
  • the illumination head 4 may be provided with a mechanism capable of changing the inclination of the optical axis of the light emitted from the light source 5.
  • 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 is pivoted in a predetermined range around this rotating shaft 8 Configure to be free.
  • the light source 5 may be rotated by manually rotating the rotating shaft 8 or may be automatically performed by an electric motor or the like. Thereby, the spread and intensity of the light emitted from the illumination head 4 can be adjusted arbitrarily, and the convenience for the user can be further enhanced.
  • the focus can be adjusted.
  • the rotary shaft 8 is decentered with respect to the light emitting unit, the inclination adjustment and focus adjustment of the optical axis can be simultaneously performed only by the rotation of the rotary shaft 8.
  • the inclination 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 inclination and positional relationship without providing a mechanism for driving such as the rotating shaft 8 It may be configured to
  • FIG. 11 is a plan view showing the arrangement of the optical system according to the present embodiment.
  • three reflectors 6a to 6c are alternately offset in the front-rear direction.
  • the sub-light sources 5a to 5c constituting the light source 5 are disposed on the reflection plates 6a to 6c, respectively.
  • FIG. 12 is a cross-sectional view of the left and right optical systems
  • FIG. 13 is a cross-sectional view of the central optical system. Assuming that 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 ⁇ 1 and this inclination in the central optical system is ⁇ 2, ⁇ 2 is set larger than ⁇ 1. The other points are the same as in the first embodiment, and thus the description thereof is omitted here.
  • FIG. 14 is a diagram showing the light intensity distribution of the irradiation area D before diffusion of the individual sub light sources 5a to 5c before diffusion
  • FIG. 15 is a composite light source before diffusion in which three sub light sources 5a to 5c are superimposed
  • FIG. 16 is a view showing a light intensity distribution of the irradiation area D
  • FIG. 16 is a view showing a light intensity distribution of the irradiation area D after the diffusion.
  • these figures show the distribution of the case where the illumination head 4 has a diameter of about 200 mm and the height of the stand is 300 mm, and emits a wide range of round light from a plane parallel to the installation surface.
  • the irradiation areas of light formed by the left and right sub-light sources are in the front-rear direction (left-right direction in the drawing) compared to that of the central light source (FIG. 14B).
  • a light having a near circular shape is formed (FIG. 15), and as a result of diffusing the synthetic light having a near circular shape by the diffusion plate 7 (FIG. 16), an irradiation area D Can be made more circular, and the illuminance can also be maintained. Further, emitted light from the three optical systems is combined, and the irradiation area D is formed in front of the area directly below the illumination head 4.
  • the irradiation area D formed on the irradiation surface is offset forward of directly below the illumination head 4 by combining a plurality of optical systems as in the first embodiment. be able to.
  • FIG. 17 is a plan view of an optical system according to the present embodiment.
  • four reflection plates 6a to 6d which are obtained by cutting the reflection plate 6 having the above-described reflection characteristics, are point-symmetrically arranged, that is, vertically and horizontally.
  • a plurality of sub-light sources 6a to 6d constituting the light source 5 are arranged to be inclined.
  • the relative inclinations of the sub light sources 6a to 6d with respect to the reflectors 6a to 6d are smaller than those in the first and second embodiments, and the reflected light from the respective reflectors 5a to 5d is from directly below the illumination head 4 It is set not to disperse widely.
  • the above-described reflector 6 may be configured as a single ring reflector 6e.
  • FIG. 19 is a view showing a light intensity distribution before diffusion of the irradiation area D by the plurality of sub light sources 5a to 5d
  • FIG. 20 is a view showing a light intensity distribution after diffusion by the lens diffusion plate 7.
  • an irradiation area D having a wide range, a substantially circular shape and uniform light intensity directly under the illumination head 4.
  • the irradiation area D is formed to be offset forward with respect to the position directly below the illumination head 4
  • the direction of the offset is limited to the forward Rather, the present invention broadly encompasses the form of being offset in one direction relative to the position directly below the illumination head 4.
  • the illumination device 1 is not limited to a stand type, and may be comprised only with the illumination head 4, including a clip type and a suspension type.
PCT/JP2018/000266 2018-01-10 2018-01-10 照明機器 WO2019138459A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2018545519A JP6487128B1 (ja) 2018-01-10 2018-01-10 照明機器
PCT/JP2018/000266 WO2019138459A1 (ja) 2018-01-10 2018-01-10 照明機器
KR1020207015414A KR102469791B1 (ko) 2018-01-10 2018-01-10 조명 기기
CN201880076458.1A CN111406178B (zh) 2018-01-10 2018-01-10 照明设备
TW107136533A TWI768136B (zh) 2018-01-10 2018-10-17 照明機器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/000266 WO2019138459A1 (ja) 2018-01-10 2018-01-10 照明機器

Publications (1)

Publication Number Publication Date
WO2019138459A1 true WO2019138459A1 (ja) 2019-07-18

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ID=65802988

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/000266 WO2019138459A1 (ja) 2018-01-10 2018-01-10 照明機器

Country Status (5)

Country Link
JP (1) JP6487128B1 (zh)
KR (1) KR102469791B1 (zh)
CN (1) CN111406178B (zh)
TW (1) TWI768136B (zh)
WO (1) WO2019138459A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110701508A (zh) * 2019-09-20 2020-01-17 江门市想天照明科技有限公司 偏光台灯
WO2024067239A1 (zh) * 2022-09-27 2024-04-04 苏州欧普照明有限公司 减影台灯

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110701508A (zh) * 2019-09-20 2020-01-17 江门市想天照明科技有限公司 偏光台灯
WO2024067239A1 (zh) * 2022-09-27 2024-04-04 苏州欧普照明有限公司 减影台灯

Also Published As

Publication number Publication date
KR102469791B1 (ko) 2022-11-22
KR20200106490A (ko) 2020-09-14
TW201930781A (zh) 2019-08-01
CN111406178A (zh) 2020-07-10
CN111406178B (zh) 2022-09-06
JP6487128B1 (ja) 2019-03-20
JPWO2019138459A1 (ja) 2020-01-23
TWI768136B (zh) 2022-06-21

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