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WO2013157943A1 - Lighting device with adjustable lighting angle - Google Patents

Lighting device with adjustable lighting angle Download PDF

Info

Publication number
WO2013157943A1
WO2013157943A1 PCT/NL2013/050279 NL2013050279W WO2013157943A1 WO 2013157943 A1 WO2013157943 A1 WO 2013157943A1 NL 2013050279 W NL2013050279 W NL 2013050279W WO 2013157943 A1 WO2013157943 A1 WO 2013157943A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier body
reflector bodies
lighting device
reflector
adjustable
Prior art date
Application number
PCT/NL2013/050279
Other languages
French (fr)
Inventor
Carolus Wilhelmus Michel VAN DE SANDE
Franciscus Adrianus Maria VAN GORP
Petrus Leonardus Maria VAN DER HEIJDEN
Original Assignee
Brouwers Lichttechniek B.V.
Franciscus Adrianus Maria VAN GORP
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 Brouwers Lichttechniek B.V., Franciscus Adrianus Maria VAN GORP filed Critical Brouwers Lichttechniek B.V.
Publication of WO2013157943A1 publication Critical patent/WO2013157943A1/en

Links

Classifications

    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G7/00—Botany in general
    • A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
    • A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/249—Lighting means
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21V7/10—Construction
    • F21V7/16—Construction with provision for adjusting the curvature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • the invention relates to a lighting device with an adjustable lighting angle.
  • Lighting devices with adjustable lighting angle are known and are for instance applied in glass horticulture in order to adjust the lighting in accordance with the growth stage of the plants at which the lighting is directed.
  • the lighting angle is placed for this purpose in a narrow beam position, which has the further advantage that the light beam is bundled and the light intensity thereby increases. This is particularly advantageous in the early growth stage of a plant.
  • the plant will cover a larger area and the lighting angle can be adjusted such that the lighting device provides substantially the whole plant with light. Due to the larger illuminated area associated with this wide beam position, the light intensity is lower here than was the case with the narrow beam position.
  • the invention now has for its object to provide an alternative lighting device of the above described type wherein the stated drawbacks do not occur, or at least do so to lesser extent .
  • the lighting device with adjustable lighting angle comprising:
  • the reflector bodies are mounted with the side facing toward the carrier body for pivoting on the carrier body and extend at least some distance under the carrier body from a pivot axis and comprise an inner edge;
  • adjusting means are provided which extend downward from the carrier body in the direction of the parts of the reflector bodies extending under the carrier body and engage thereon such that the pivot angle of the reflector bodies relative to the carrier body is adjustable therewith.
  • the rotation angle of the reflector bodies is adjustable in simple and comfortable manner between a narrow beam position and a wide beam position.
  • the adjusting means comprise a pusher member which is configured to push against the parts of the reflector bodies extending under the carrier body.
  • the beam position of the lighting device can be adjusted by pushing the parts of the reflector bodies extending under the carrier body a desired distance away from the carrier body.
  • the pusher member is a spindle or a pressure cylinder, which both enable a continuously variable adjustment.
  • a motor drive can be provided with which this adjustability can be electrically driven.
  • the adjustment can hereby be operated remotely or even be automated using an optional control unit.
  • the pusher member comprises a cam-like member which is pivotable in height direction relative to the carrier body, wherein the cam-like member extends downward from the carrier body and engages directly or indirectly on the parts of the reflector bodies extending under the carrier body such that the pivot angle of the reflector bodies is adjustable relative to the carrier body by rotating the cam-like member.
  • a cam-like member Compared to a spindle such a cam-like member has the advantage that the adjustment can be performed more quickly.
  • the cam-like member can if desired be provided with a motor drive for the adjustment thereof.
  • the cam-like member can for instance be lockable in different positions relative to the carrier body, although it is also possible to envisage a frictional clamping force being exerted on the rotation shaft of the cam-like member, this enabling a continuously variable adjustment.
  • two reflector bodies which extend under the carrier body from their respective pivot axes, and thereby define with their inner edges an engaging contact surface.
  • the adjusting means engage on or close to the contact surface between the reflector bodies. This allows a uniform adjustment of the two reflector bodies with a single adjusting means. Both reflector bodies will moreover displace substantially symmetrically if they have similar dimensions and the pivot points are arranged at a similar location.
  • the contact surface between the reflector bodies comprises mutually engaging bent sheet edges.
  • a substantially continuous reflective surface can hereby be realized.
  • An overlapping contact surface between the two reflector bodies on which the adjusting means can engage will however be maintained at all times.
  • the inner edges of the two reflector bodies extending under the carrier body from their respective pivot axes are slidable along each other. Because the two reflector bodies are expressly not fixed to each other, a greater adjustment range results. This is because the inner edges of the reflector bodies will slide along each other when the reflector bodies rotate around the respective pivot axes with which they are mounted on the carrier body.
  • the reflector bodies are curved sheet parts which extend at least some distance away from the carrier body from the pivot axis, this providing a greater reflective surface.
  • Arranged according to yet another preferred embodiment in the reflector bodies are one or more ventilation openings through which heat from the lamp can be discharged.
  • Figure 1 is a perspective view of a lighting device according to the invention.
  • Figure 2 is a front view of the lighting device shown in figure 1 in a narrow beam position
  • Figure 3 is a front view of the lighting device shown in figure 1 in a wide beam position
  • Figures 4A and 4B show a perspective and a schematic front view of an alternative embodiment of a lighting device in a first position of the reflector bodies; and Figures 5A and 5B show a perspective and a schematic front view of an alternative embodiment of a lighting device in a second position of the reflector bodies.
  • Lighting device 1 comprises a carrier body 2 from which a lamp fixture 28 extends.
  • This lamp fixture 28 has slot-like recesses 30 in which the fitting 32 is adjustably received.
  • a lamp 4 is arranged in fitting 32.
  • a choke 36 can optionally be provided on carrier body 2 of the lighting device.
  • reflector bodies 6a, 6b are curved sheet parts mounted pivotally on carrier body 2 using hinges 11. Reflector bodies 6a, 6b are thus situated between lamp 4 and carrier body 2 and are provided on the side 8a, 8b facing toward lamp 4 with a reflective surface.
  • An auxiliary reflector 34 is arranged under lamp 4 on lamp fixture 28.
  • This auxiliary reflector 34 on the one hand spreads the heat radiated by lamp 4 so that this heat does not radiate directly to the plants located under the lamp during use.
  • This reflector 34 on the other hand reflects light shining downward from lamp 4 in the direction of reflector bodies 6a, 6b which then reflect this light back in the direction of the sheets .
  • Reflector bodies 6a, 6b extend some distance under carrier body 2 from the pivot axis 12a, 12b running through hinges 11. These parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2 have inner edges 14a, 14b which form an engaging contact surface 22.
  • Carrier body 2 is further provided with adjusting means comprising a pusher member configured to push against parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2.
  • the pusher member is a spindle 20 which can be rotated manually using an adjusting knob 26. Spindle 20 pushes in the shown embodiment against the contact surface 22 between the two reflector bodies 6a, 6b.
  • the beam position of lighting device 1 can be adjusted by pushing the parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2 a desired distance away from carrier body 2. This will be further elucidated with reference to figures 2 and 3.
  • the spindle 20 of adjusting means 16 is located in a substantially screwed inward position, whereby contact surface 22 moves relatively close to carrier body 2.
  • the curved reflector bodies 6a, 6b pivot around the pivot axes 12a, 12b running through hinges 11.
  • the distance which reflector bodies 6a, 6b extend outside carrier body 2 is indicated with reference numerals 38a, 38b. Because this distance 38a, 38b is preferably longer than the distance over which the length of the parts 18a, 18b extending under carrier body 2 extends, the influence of gravitational force ensures via a lever action around pivot axes 12a, 12b that contact surface 22 remains lying at all times against spindle 20 of adjusting means 16.
  • carrier body 2 comprises adjusting means 16 in the form of a cam member 44.
  • Cam member 44 is mounted on carrier body 2 with a hinge 42 such that cam member 44 is pivotally adjustable in height direction relative to carrier body 2.
  • carrier body 2 is provided in the shown embodiment with a recess 40.
  • cam member 44 In the wide beam position of reflector bodies 6a, 6b shown in figures 4A and 4B the cam member 44 is situated in a downward rotated position. Cam member 4 extends downward from carrier body 2 and engages with its edge 46 on the parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2.
  • cam member 44 When cam member 44 is displaced to the position shown in figures 5A and 5B, reflector bodies 6a, 6b will be situated in a narrower beam position. Cam member 44 extends less far downward from carrier body 2, whereby the parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2 displace in upward direction and are held at the desired adjustment position by edge 46 of cam member 44.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Botany (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

The present invention relates to a lighting device with adjustable lighting angle, comprising a carrier body, a light source arranged some distance from the carrier body, at least two substantially elongate reflector bodies which are arranged between the light source and the carrier body and provided with a reflective surface on the side facing toward the lamp, wherein the reflector bodies are mounted with the side facing toward the carrier body for pivoting on the carrier body and extend at least some distance under the carrier body from a pivot axis, and comprise an inner edge, and wherein adjusting means are provided which extend downward from the carrier body in the direction of the parts of the reflector bodies extending under the carrier body and engage thereon such that the pivot angle of the reflector bodies relative to the carrier body is adjustable therewith.

Description

LIGHTING DEVICE WI TH ADJUSTABLE LIGHTING ANGLE
The invention relates to a lighting device with an adjustable lighting angle.
Lighting devices with adjustable lighting angle are known and are for instance applied in glass horticulture in order to adjust the lighting in accordance with the growth stage of the plants at which the lighting is directed.
At an initial stage, in which the plants are still small, it suffices to concentrate the light on the small area where the plant is located. The lighting angle is placed for this purpose in a narrow beam position, which has the further advantage that the light beam is bundled and the light intensity thereby increases. This is particularly advantageous in the early growth stage of a plant.
At a further advanced growth stage the plant will cover a larger area and the lighting angle can be adjusted such that the lighting device provides substantially the whole plant with light. Due to the larger illuminated area associated with this wide beam position, the light intensity is lower here than was the case with the narrow beam position.
Known from US-A1-2005/ 0057932 is a lighting device which makes use of two reflective curved sheet parts, the outer edges of which are connected using cords. The reflective sheets are urged by means of shortening or lengthening these cords into respectively a more or less curved position, whereby the beam angle is adjustable. A drawback of such a lighting device such as this, as commercially available under the name
x d ust-A- ings ' among others, is the awkward method of adjusting such cords. Several such cords are moreover usually applied, this making adjustment even more difficult.
The invention now has for its object to provide an alternative lighting device of the above described type wherein the stated drawbacks do not occur, or at least do so to lesser extent .
Said object is achieved with the lighting device with adjustable lighting angle according to the invention, comprising:
- a carrier body;
- a light source arranged some distance from the carrier body;
- at least two substantially elongate reflector bodies which are arranged between the light source and the carrier body and provided with a reflective surface on the side facing toward the lamp;
- wherein the reflector bodies are mounted with the side facing toward the carrier body for pivoting on the carrier body and extend at least some distance under the carrier body from a pivot axis and comprise an inner edge; and
- wherein adjusting means are provided which extend downward from the carrier body in the direction of the parts of the reflector bodies extending under the carrier body and engage thereon such that the pivot angle of the reflector bodies relative to the carrier body is adjustable therewith.
Using the adjusting means the rotation angle of the reflector bodies is adjustable in simple and comfortable manner between a narrow beam position and a wide beam position.
According to a preferred embodiment, the adjusting means comprise a pusher member which is configured to push against the parts of the reflector bodies extending under the carrier body. The beam position of the lighting device can be adjusted by pushing the parts of the reflector bodies extending under the carrier body a desired distance away from the carrier body.
According to a further preferred embodiment, the pusher member is a spindle or a pressure cylinder, which both enable a continuously variable adjustment. If desired, a motor drive can be provided with which this adjustability can be electrically driven. The adjustment can hereby be operated remotely or even be automated using an optional control unit.
According to yet another preferred embodiment, the pusher member comprises a cam-like member which is pivotable in height direction relative to the carrier body, wherein the cam-like member extends downward from the carrier body and engages directly or indirectly on the parts of the reflector bodies extending under the carrier body such that the pivot angle of the reflector bodies is adjustable relative to the carrier body by rotating the cam-like member. Compared to a spindle such a cam-like member has the advantage that the adjustment can be performed more quickly.
The cam-like member can if desired be provided with a motor drive for the adjustment thereof.
The cam-like member can for instance be lockable in different positions relative to the carrier body, although it is also possible to envisage a frictional clamping force being exerted on the rotation shaft of the cam-like member, this enabling a continuously variable adjustment.
Provided according to yet another preferred embodiment are two reflector bodies which extend under the carrier body from their respective pivot axes, and thereby define with their inner edges an engaging contact surface.
According to yet another preferred embodiment, the adjusting means engage on or close to the contact surface between the reflector bodies. This allows a uniform adjustment of the two reflector bodies with a single adjusting means. Both reflector bodies will moreover displace substantially symmetrically if they have similar dimensions and the pivot points are arranged at a similar location.
According to yet another preferred embodiment, the contact surface between the reflector bodies comprises mutually engaging bent sheet edges. A substantially continuous reflective surface can hereby be realized. An overlapping contact surface between the two reflector bodies on which the adjusting means can engage will however be maintained at all times.
According to yet another preferred embodiment, the inner edges of the two reflector bodies extending under the carrier body from their respective pivot axes are slidable along each other. Because the two reflector bodies are expressly not fixed to each other, a greater adjustment range results. This is because the inner edges of the reflector bodies will slide along each other when the reflector bodies rotate around the respective pivot axes with which they are mounted on the carrier body.
According to yet another preferred embodiment, the reflector bodies are curved sheet parts which extend at least some distance away from the carrier body from the pivot axis, this providing a greater reflective surface.
Arranged according to yet another preferred embodiment in the reflector bodies are one or more ventilation openings through which heat from the lamp can be discharged.
A preferred embodiment of the present invention is further elucidated in the following description with reference to the drawing, in which:
Figure 1 is a perspective view of a lighting device according to the invention;
Figure 2 is a front view of the lighting device shown in figure 1 in a narrow beam position;
Figure 3 is a front view of the lighting device shown in figure 1 in a wide beam position;
Figures 4A and 4B show a perspective and a schematic front view of an alternative embodiment of a lighting device in a first position of the reflector bodies; and Figures 5A and 5B show a perspective and a schematic front view of an alternative embodiment of a lighting device in a second position of the reflector bodies.
Lighting device 1 comprises a carrier body 2 from which a lamp fixture 28 extends. This lamp fixture 28 has slot-like recesses 30 in which the fitting 32 is adjustably received. A lamp 4 is arranged in fitting 32.
A choke 36 can optionally be provided on carrier body 2 of the lighting device.
The light produced by lamp 4 is emitted downward using reflector bodies 6a, 6b. In the shown embodiment reflector bodies 6a, 6b are curved sheet parts mounted pivotally on carrier body 2 using hinges 11. Reflector bodies 6a, 6b are thus situated between lamp 4 and carrier body 2 and are provided on the side 8a, 8b facing toward lamp 4 with a reflective surface.
An auxiliary reflector 34 is arranged under lamp 4 on lamp fixture 28. This auxiliary reflector 34 on the one hand spreads the heat radiated by lamp 4 so that this heat does not radiate directly to the plants located under the lamp during use. This reflector 34 on the other hand reflects light shining downward from lamp 4 in the direction of reflector bodies 6a, 6b which then reflect this light back in the direction of the sheets .
Reflector bodies 6a, 6b extend some distance under carrier body 2 from the pivot axis 12a, 12b running through hinges 11. These parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2 have inner edges 14a, 14b which form an engaging contact surface 22.
Carrier body 2 is further provided with adjusting means comprising a pusher member configured to push against parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2. In the shown embodiment the pusher member is a spindle 20 which can be rotated manually using an adjusting knob 26. Spindle 20 pushes in the shown embodiment against the contact surface 22 between the two reflector bodies 6a, 6b.
The beam position of lighting device 1 can be adjusted by pushing the parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2 a desired distance away from carrier body 2. This will be further elucidated with reference to figures 2 and 3.
In the front view shown in figure 2 the spindle 20 of adjusting means 16 is located in a substantially screwed inward position, whereby contact surface 22 moves relatively close to carrier body 2. The curved reflector bodies 6a, 6b pivot around the pivot axes 12a, 12b running through hinges 11.
In the shown embodiment the distance which reflector bodies 6a, 6b extend outside carrier body 2 is indicated with reference numerals 38a, 38b. Because this distance 38a, 38b is preferably longer than the distance over which the length of the parts 18a, 18b extending under carrier body 2 extends, the influence of gravitational force ensures via a lever action around pivot axes 12a, 12b that contact surface 22 remains lying at all times against spindle 20 of adjusting means 16.
In order to adjust the reflector bodies 6a, 6b from the narrow beam position shown in figure 2 to the wide beam position shown in figure 3, spindle 20 of adjusting means 16 is screwed outward relative to carrier body 2 using adjusting knob 26.
According to a particularly advantageous embodiment as shown in figures 4A-5B, carrier body 2 comprises adjusting means 16 in the form of a cam member 44. Cam member 44 is mounted on carrier body 2 with a hinge 42 such that cam member 44 is pivotally adjustable in height direction relative to carrier body 2. In order to make this adjustment possible, carrier body 2 is provided in the shown embodiment with a recess 40.
In the wide beam position of reflector bodies 6a, 6b shown in figures 4A and 4B the cam member 44 is situated in a downward rotated position. Cam member 4 extends downward from carrier body 2 and engages with its edge 46 on the parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2.
Because the inner edges 14a, 14b are also provided in this shown embodiment with mutually engaging bent sheet edges, a substantially continuously running reflective surface is created .
When cam member 44 is displaced to the position shown in figures 5A and 5B, reflector bodies 6a, 6b will be situated in a narrower beam position. Cam member 44 extends less far downward from carrier body 2, whereby the parts 18a, 18b of reflector bodies 6a, 6b extending under carrier body 2 displace in upward direction and are held at the desired adjustment position by edge 46 of cam member 44.
In order to enable simple manual adjustment of cam member
44, it can be provided if desired with a gripping surface 48 intended for this purpose.
Although it shows a preferred embodiment of the invention, the above described embodiment is intended solely for the purpose of illustrating the present invention and not to limit the specification of the invention in any way. The rights described are defined by the following claims, within the scope of which many modifications can be envisaged.

Claims

Claims
1. Lighting device with adjustable lighting angle, comprising :
- a carrier body;
- a light source arranged some distance from the carrier body;
- at least two substantially elongate reflector bodies which are arranged between the light source and the carrier body and provided with a reflective surface on the side facing toward the lamp;
- wherein the reflector bodies are mounted with the side facing toward the carrier body for pivoting on the carrier body;
characterized in that
the reflector bodies are mounted pivotally on the carrier body and extend at least some distance under the carrier body from a pivot axis, and comprise an inner edge; and
- wherein adjusting means are provided which extend downward from the carrier body in the direction of the parts of the reflector bodies extending under the carrier body and engage thereon such that the pivot angle of the reflector bodies relative to the carrier body is adjustable therewith.
2. Lighting device as claimed in claim 1, wherein the adjusting means comprise a pusher member which is configured to push against the parts of the reflector bodies extending under the carrier body.
3. Lighting device as claimed in claim 1 or 2, wherein the pusher member is a spindle or a pressure cylinder.
4. Lighting device as claimed in claim 1 or 2, wherein the pusher member comprises a cam-like member which is pivotable in height direction relative to the carrier body, wherein the cam-like member extends downward from the carrier body and engages directly or indirectly on the parts of the reflector bodies extending under the carrier body such that the pivot angle of the reflector bodies is adjustable relative to the carrier body by rotating the cam-like member.
5. Lighting device as claimed in any of the foregoing claims, wherein two reflector bodies are provided which extend under the carrier body from their respective pivot axes, and thereby define with their inner edges an engaging contact surface .
6. Lighting device as claimed in claim 5, wherein the adjusting means engage on or close to the contact surface between the reflector bodies.
7. Lighting device as claimed in claim 5 or 6, wherein the contact surface between the reflector bodies comprises mutually engaging bent sheet edges.
8. Lighting device as claimed in any of the foregoing claims, wherein the inner edges of the two reflector bodies extending under the carrier body from their respective pivot axes are slidable along each other.
9. Lighting device as claimed in any of the foregoing claims, wherein the reflector bodies are curved sheet parts which extend at least some distance away from the carrier body from the pivot axis.
10. Lighting device as claimed in any of the foregoing claims, wherein one or more ventilation openings through which heat from the lamp can be discharged are arranged in the reflector bodies .
PCT/NL2013/050279 2012-04-20 2013-04-18 Lighting device with adjustable lighting angle WO2013157943A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2008678 2012-04-20
NL2008678A NL2008678C2 (en) 2012-04-20 2012-04-20 LIGHTING DEVICE WITH ADJUSTABLE LIGHTING ANGLE.

Publications (1)

Publication Number Publication Date
WO2013157943A1 true WO2013157943A1 (en) 2013-10-24

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WO (1) WO2013157943A1 (en)

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CN103947482A (en) * 2014-02-14 2014-07-30 黑龙江省农业科学院园艺分院 Mobile light supplement equipment
EP2884159A1 (en) * 2013-12-13 2015-06-17 Lucibel SA Luminaire with adjustable photometry
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CN108529712A (en) * 2018-04-23 2018-09-14 东南大学 A kind of photocatalytic water treatment device
JP2019024433A (en) * 2017-08-01 2019-02-21 コイト電工株式会社 Lighting fixture for plant cultivation, and cultivation method of plant
CN111642331A (en) * 2020-07-20 2020-09-11 连云港银丰食用菌科技有限公司 Cultivation indoor light-emitting device and control method thereof
WO2021022807A1 (en) * 2019-08-07 2021-02-11 Fujian Hongbo Opto-Electronics Technology Co., Ltd. Plant grow light system
WO2022034547A1 (en) * 2020-08-13 2022-02-17 Heliosxe Technologies Inc. Pulsed xenon ultraviolet (uv) disinfection system
WO2024016925A1 (en) * 2022-07-20 2024-01-25 上海芯龙光电科技股份有限公司 Dual-module buried lamp having externally adjustable angle

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