EP0779962A1 - Process and device for adjusting the illumination and colour temperature of light emitted in a room - Google Patents
Process and device for adjusting the illumination and colour temperature of light emitted in a roomInfo
- Publication number
- EP0779962A1 EP0779962A1 EP92909181A EP92909181A EP0779962A1 EP 0779962 A1 EP0779962 A1 EP 0779962A1 EP 92909181 A EP92909181 A EP 92909181A EP 92909181 A EP92909181 A EP 92909181A EP 0779962 A1 EP0779962 A1 EP 0779962A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- day
- fluorescent tube
- red
- gold
- solstice
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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
- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
Definitions
- the invention relates to a method and a device for influencing the illuminance and colored temperature of light generated by means of a fluorescent tube and emitted into a room, wherein reflector elements, which are arranged at least partially around the fluorescent tube, in each case about axes running parallel to the longitudinal axis of the fluorescent tube are rotatable and contain side surfaces, one of which is convex and red and increasingly reflects in the color temperature range of 3600 ° Kelvin, the other is flat and gold-colored and increasingly reflects in the color temperature range of 4500 ° Kelvin and another is concave and silver-colored and reinforced reflected in the range of 5400 ° Kelvin.
- a device of the type described above is known from EP-B-0 189 394. With this device, the color temperature and the illuminance of the light emanating from the fluorescent tube and the reflector elements can be changed. By adjusting the reflector elements to each other and aligning the differently reflecting side surfaces, it is possible to adapt the color temperature and illuminance to the course of daylight.
- the individual reflector elements can be controlled synchronously in this case, 'optionally substituted by a pre-programmed control mechanism.
- the device is used instead of artificial light sources with monotonous illuminance and color temperature.
- the invention is based on the problem of further developing the method described at the outset for influencing the color temperature and the illuminance of the light in a room in such a way that the light can be adapted in a simple manner to the light conditions resulting during a year due to the different duration of the solar radiation and angle of incidence.
- the fluorescent tube emits a light spectrum which corresponds to that of sunlight on earth on the day of the summer solstice around noon, that at the beginning of spring and autumn by means of the red side surfaces aligned with the fluorescent tube, a red phase of thirty and is generated in the afternoon of thirty minutes and a gold phase of sixty minutes in the morning and sixty minutes in the afternoon is generated by means of the gold-colored side surfaces aligned with the fluorescent tube, that between the day of the winter solstice and the day of the summer solstice, the red phases and the gold phases each proceed in proportion to the number of past days reduced from one and a half times the value of the beginning of spring to half the value of the beginning of spring and from the day of the summer solstice to the day of the winter solstice again down to one and a half times the value of the spring and nd early autumn and that a silver phase is generated outside the red and gold phases by means of the silver-colored side surfaces aligned with the fluorescent tube.
- the color temperature of the light generated by the fluorescent tube can be adapted to that of natural light over the course of the year by using the reflector elements. Because of the influence of light on the human body, this adaptation to natural conditions is particularly favorable.
- the process can also be used in animal husbandry and in greenhouses.
- the illuminance of the light emitted into the room is from the day of. Winter solstice until the day of the summer solstice increased by thirty percent in proportion to the number of days past the day of the winter solstice, and then decreased by thirty percent from the day of the summer solstice to the day of the winter solstice. With this procedure the illuminance can be adjusted to the natural light distribution during the different seasons.
- a fluorescent tube which corresponds to the light spectrum of the daylight the summer solstice around noon on Earth produces a spectrum and that as a drive for the reflector elements at least one stepper motor is provided, which is fed by a stepper motor controller, which is connected to a microprocessor to which a clock and a read-only memory are connected, in which Data on the angular positions of the reflector elements to produce a red phase of thirty minutes in the morning and thirty minutes in the afternoon and a gold phase of sixty minutes in the morning and sixty minutes in the afternoon at the beginning of spring and autumn and to reduce the red and gold phase between the day of the winter solstice and the day of the summer solstice from one and a half times to the values of the day of spring or autumn and to increase the red and gold phase between the day of the summer solstice and the day of the winter solstice from half to one and a half times the value of the days of spring or autumn n initially and data on the angular positions for producing
- stepper motors enables a very fine adjustment of the reflector elements.
- the times of day and the days in the annual cycle are determined by means of the clock.
- the setting data of the reflector elements are contained in the read-only memory in a fail-safe manner.
- the reflector elements are preferably arranged in an oscillating manner in the silver phase and can be moved back and forth in the range of ⁇ 30 °.
- the fluorescent tube is connected to a periodically reversed DC voltage. A very precise adjustment of the angular position of the reflector elements is possible if each 1.8 ° rotation of the stepping motor z. B. forty steps are required.
- FIG. 1 shows a device for influencing the color temperature and illuminance of light emitted into a room in a perspective view
- FIG. 2 is an enlarged view of the reflector assembly of FIG. 1,
- FIG. 3 shows a detailed illustration of a reflector element according to FIG. 2,
- Fig. 4 is a block diagram of an arrangement for adjusting the reflector arrangement according to FIGS. I to 3 and
- FIG. 5 shows a diagram of the course of the brightness of the emitted light and the setting phases of the reflector elements as a function of the days of the year in order to influence the daily or annual rhythm of the brightness.
- an artificial light source in the form of a fluorescent tube (12) surrounded by a reflector arrangement (10) is shown.
- the reflector arrangement (10) is located in a luminaire housing (13) that can be attached to a ceiling or suspended from it, for example.
- the reflector arrangement (10) consists at least partially in the form of a ring around the fluorescent lamp (12), for example on an imaginary cylinder jacket or another curved surface, so that the radiation from the fluorescent lamp (12) comes to the desired extent to be able to modify and reflect in terms of color temperature and brightness.
- the reflector elements (14) - as is particularly illustrated in FIG. 3 - are formed by prismatic bodies which have bearing pins (16) or (18) at their ends, by means of which they can be mounted in the housing (13). Furthermore, of the bearing journals (16) and / or (18), for example, friction wheels, cable pull, gearwheels or the like can be arranged, which coincide with the adjacent reflector elements in D
- Interaction occurs in order to enable controlled and synchronous rotation of the reflector elements (14), for example, via a stepping motor (20) provided on one end face of the housing (13).
- the reflector elements can be driven by a gear or direct drive.
- the reflector elements should be rotated at the same time, but in the opposite sense.
- a triangular reflector z. B. also a square (1 x red. 2 x gold, 1 x silver) can be used.
- the red side of the reflector would be curved and matt on the surface, the golden sides would be flat and semi-matt and the silver side would be concave and high-gloss.
- the control of the individual reflector elements (14) can be preprogrammed in order to ensure alignment to the desired extent on the fluorescent lamp (12), which ultimately determines the illuminance and the color temperature of the emitted radiation.
- Each reflector element (14) is a triangular prism or square prism with geometrically differently shaped side surfaces (22), (24) and (26).
- the different design of the side surfaces (22), (24), (26) should ensure, in addition to a still to be described different optical effectiveness with regard to the incident radiation, that the radiation originating from the artificial light source in the form of the fluorescent lamp (12) is illuminant and / or color temperature can be varied.
- the surface (22) is concave with respect to the fluorescent lamp (12), is preferably silver-colored by means of a special aluminum alloy such as a magnesium-aluminum alloy and has optical properties which ensure that the illuminance increases and a color temperature of the radiation originating from the fluorescent lamp (12) is set to approximately 5400 ° Kelvin.
- the side surface (24), on the other hand, is flat, although it also reflects the UV radiation well, but to a lesser extent than the concave surface (22), and sets the color temperature of the emitted light to approximately 4500 ° Kelvin.
- the flat surface is also yellow and semi-glossy. Preferably these Properties also achieved through a special aluminum alloy.
- the third surface (26) is convex and increasingly reflects the red component of the light coming from the fluorescent lamp (12), while at the same time there is a greatly reduced UV reflection compared to the surface (24). Due to the convex shape, the reflected light component perceived by the surface (26) is the lowest compared to the reflection components of the other surfaces (22) and (24). Fe he is the convex surface red and matt, which also reduces the reflectance. It is increasingly reflected in the range of 3600 ° Kelvin.
- the fluorescent tube (12) emits a light spectrum which is similar to that of sunlight on earth on the day of the summer solstice and whose wavelengths are between 290 and 770 nm.
- the inputs of the stepper motor control (28) are connected to outputs of a microprocessor (30) which is connected to a clock generator (32). Further inputs of the microprocessor are connected to an electronic clock (34) and to a read-only memory (36).
- the operating voltage for the microprocessor (30), the clock (34), the clock generator (32) and the read-only memory is generated by a rectifier bridge (38), the inputs of which are connected to the mains voltage.
- Another rectifier bridge (40) generates the supply voltage for the fluorescent tube (12).
- the voltage of the rectifier bridge (40) is fed to the fluorescent tube (12) via a polarity reversal switch (42).
- the polarity of the voltage at the connections of the fluorescent tube (12) is reversed every 20 minutes.
- the polarity reversal inverter (42) and a starter relay (44) for the fluorescent tube (12) are controlled by the microprocessor (30).
- the emitted light is adapted to a desired course.
- the angular positions of the reflector elements (14) are set by means of the stepper motor (20).
- the reflector elements (14) are preferably arranged in an oscillating manner in the silver phase and can each be set to the desired angle between two angles, which are ⁇ 30 °.
- a rotation of the stepper motor (20) z. B. 40 steps corresponds to a change in the angular position by 1.8 °.
- the reflector elements (14) are set at the beginning of spring and autumn so that a red phase of 20 minutes occurs in the morning and 20 minutes in the afternoon. Furthermore, by setting the reflector elements at the beginning of spring and autumn (25.3., 23.9.), A gold phase of 40 minutes in the morning and 40 minutes in the afternoon is set. Otherwise, the silver phase is set or used.
- the duration of the red, gold and silver phases is changed depending on the calendar.
- Fig. 5 the deviations of the red and gold phases from the values labeled 0 at the beginning of spring and autumn are shown in a diagram as a function of the seasonal trend. 5
- the red and gold phases are 50% higher on the day of the winter solstice than at the beginning of spring or autumn and 50% lower on the day of the summer solstice (21.6.) Than at the beginning of spring or autumn .
- the red and gold phases fall linearly depending on the time interval from the day of the winter solstice.
- the red and gold phases increase linearly depending on the time interval from the day of the summer solstice.
- the course shown in FIG. 5 relates to the setting of the red phase of 20 minutes in the morning and 20 minutes in the afternoon at the beginning of spring and autumn and to the setting of the gold phase of 40 minutes in the morning and 40 minutes in the afternoon at the beginning of spring and autumn.
- the illuminance is varied in the opposite sense.
- the illuminance at the beginning of spring and autumn is the same and predetermined.
- the illuminance is from -15% of the value from the day of the winter solstice to the day of the summer solstice Day of the beginning of spring increased linearly to + 15% of the same value depending on the time interval from the day of the winter solstice. From the day of the summer solstice, the curve (48) falls until the day of the winter solstice.
- the color temperature and the illuminance of the light in the room can be influenced in the course of a year in such a way that an adaptation to the natural lighting conditions takes place.
- the values for the setting of the angular positions of the reflectors are present in the read-only memory (36) in addition to the program of the microprocessor (30). It is possible to save the angular positions as a table with reference to the calendar days. A space-saving option is to store some values of the angular positions, e.g. for the winter and summer solstice and the beginning of spring and autumn and to save the other setting data by linear interpolation from the saved data.
- the calendar days are determined using the clock (34).
- the fluorescent tube (12) can be one available on the market under the name True Lite, which emits a spectrum approximately corresponding to the natural spectrum of sunlight.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4115187 | 1991-05-09 | ||
DE4115187A DE4115187A1 (en) | 1991-05-09 | 1991-05-09 | METHOD AND DEVICE FOR INFLUENCING THE ILLUMINATION STRENGTH AND COLOR TEMPERATURE OF LIGHT EMITTED IN A ROOM |
PCT/EP1992/000982 WO1992019910A1 (en) | 1991-05-09 | 1992-05-07 | Process and device for adjusting the illumination and colour temperature of light emitted in a room |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0779962A1 true EP0779962A1 (en) | 1997-06-25 |
Family
ID=6431330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92909181A Withdrawn EP0779962A1 (en) | 1991-05-09 | 1992-05-07 | Process and device for adjusting the illumination and colour temperature of light emitted in a room |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0779962A1 (en) |
JP (1) | JPH06507268A (en) |
AU (1) | AU1649292A (en) |
DE (1) | DE4115187A1 (en) |
HU (1) | HU213739B (en) |
WO (1) | WO1992019910A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5371655A (en) * | 1992-05-22 | 1994-12-06 | Panavision International, L.P. | System for varying light intensity such as for use in motion picture photography |
DE29804140U1 (en) * | 1998-03-09 | 1998-07-09 | Bamberger, Walter, 85137 Walting | Device for generating light of variable color temperature and brightness |
DE19907595A1 (en) * | 1999-02-22 | 2000-08-24 | Heinz Rathmer | Light simulation device |
DE10127982A1 (en) * | 2001-06-08 | 2002-12-12 | Prismen Gmbh & Co Kg | Retroreflective daylight system with glass tubes has at least two glass tubes arranged horizontally and one above the other or vertically and adjacent to each other |
DE102012205313A1 (en) * | 2012-03-30 | 2013-10-02 | Art + Com Ag | Lighting device and lighting method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3212284A1 (en) * | 1982-04-02 | 1983-10-13 | Heinrich 6238 Hofheim Wendel | Luminaire housing |
DE3380183D1 (en) * | 1983-10-03 | 1989-08-17 | Heinrich Wendel | Reflector device |
-
1991
- 1991-05-09 DE DE4115187A patent/DE4115187A1/en not_active Withdrawn
-
1992
- 1992-05-07 EP EP92909181A patent/EP0779962A1/en not_active Withdrawn
- 1992-05-07 JP JP4508548A patent/JPH06507268A/en active Pending
- 1992-05-07 HU HU9303175A patent/HU213739B/en not_active IP Right Cessation
- 1992-05-07 WO PCT/EP1992/000982 patent/WO1992019910A1/en not_active Application Discontinuation
- 1992-05-07 AU AU16492/92A patent/AU1649292A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9219910A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1992019910A1 (en) | 1992-11-12 |
HUT65572A (en) | 1994-07-28 |
DE4115187A1 (en) | 1992-11-26 |
HU213739B (en) | 1997-09-29 |
HU9303175D0 (en) | 1994-01-28 |
JPH06507268A (en) | 1994-08-11 |
AU1649292A (en) | 1992-12-21 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19951028 |
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19U | Interruption of proceedings before grant |
Effective date: 19970117 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE |
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19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 19990705 |
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19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 19991001 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: WENDEL, THOMAS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WENDEL, THOMAS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: WENDEL, THOMAS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WENDEL, THOMAS |
|
17Q | First examination report despatched |
Effective date: 20030107 |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20031203 |