CN111750324B - Constant-illumination device and intelligent dimming method - Google Patents
Constant-illumination device and intelligent dimming method Download PDFInfo
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- CN111750324B CN111750324B CN202010571755.2A CN202010571755A CN111750324B CN 111750324 B CN111750324 B CN 111750324B CN 202010571755 A CN202010571755 A CN 202010571755A CN 111750324 B CN111750324 B CN 111750324B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S19/00—Lighting devices or systems employing combinations of electric and non-electric light sources; Replacing or exchanging electric light sources with non-electric light sources or vice versa
- F21S19/005—Combining sunlight and electric light sources for indoor illumination
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- 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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
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- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/12—Controlling the intensity of the light using optical feedback
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- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
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- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a constant illumination lighting device and an intelligent dimming method, which comprise a light guide cylinder body, a lighting cover and a light guide plate, wherein a containing cavity is formed on a cylinder body of the light guide cylinder body, a movable light shielding plate is arranged in the containing cavity, the opening degree of the movable light shielding plate is controlled through a motor and a transmission structure, and the luminous flux emitted into a room is further controlled, namely the illumination intensity can be controlled; meanwhile, the shading plate can be completely put into the containing cavity, and light can be prevented from being blocked when natural light is insufficient. Then, an annular lampshade with a cross section in an auricle shape is arranged at the bottom of the cylinder, an annular stepless dimming lamp is arranged in the annular lampshade, and the whole bottom is sealed by a light guide plate, so that the illuminating device integrating natural light illumination and artificial illumination is formed. Finally, the opening of the light screen and the brightness of the annular stepless dimming lamp are controlled by a closed-loop intelligent dimming method, so that the lighting device always keeps constant illumination to work, and the aims of saving electric energy, meeting basic illumination requirements and avoiding glare are fulfilled at the same time.
Description
Technical Field
The invention relates to the technical field of lighting lamps, in particular to a constant-illumination lighting device and an intelligent dimming method.
Background
With the development of green buildings becoming a new direction of building design development in China, building energy conservation as part of the auditing standards must also be embodied in building design. At present, the most one scheme adopted for energy conservation of domestic buildings is to add a light guide tube which can replace a lamp for illumination in a local range, so that the aim of energy conservation is fulfilled, and the light guide tube is widely and massively used.
However, the current light guide cylinder has the following defects: 1. the brightness of the single light guide cylinder in different periods is inconsistent; 2. the brightness of each light guide cylinder is inconsistent in the same time period; 3. the light guide tube can only be used in the daytime. The problems caused by the above drawbacks are: 1. the local indoor area is too dark, the purpose of illumination cannot be achieved, or the local area is too bright, so that glare (the current building electrical design specification has specific illumination glare requirements); 2. the change of the brightness caused by the change of the weather and the daytime brings extremely poor experience to indoor personnel; 3. the light of the area where the light guide tube is located is dim at night. Based on the above analysis, there is no light guide tube that can maintain constant brightness for 24 hours all day and can also realize energy saving, so a constant illumination lighting device and an intelligent dimming method need to be provided to solve the above problems.
Disclosure of Invention
The invention aims to provide a constant-illumination lighting device and an intelligent dimming method, so as to solve the problems of electric energy saving and inconstant indoor brightness in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a constant illumination lighting device, includes the light guide cylinder body, installs the light-absorbing cover at the light guide cylinder body upper shed, installs the light guide plate at the light guide cylinder body end opening, the light guide cylinder body comprises barrel, the annular lamp shade that has in barrel wall's the chamber of accomodating and barrel bottom, the transversal auricle form that personally submits of annular lamp shade, the light guide plate embedding is installed in annular lamp shade bottom. The LED lamp further comprises an annular stepless dimming lamp embedded in the annular lampshade and two movable light shielding plates which are installed in the containing cavity and are in a gourd ladle shape, wherein the two movable light shielding plates are symmetrically arranged. When the movable light shielding plates are opened horizontally, the projected outer contour radian is the same as the radian of the inner wall of the cylinder, a gap area is reserved between the two movable light shielding plates when the movable light shielding plates are completely opened horizontally, and the movable light shielding plates can be completely collected into the collection cavity when being collected. The motor is arranged on the outer wall of the cylinder and used for controlling the opening of the movable shading plate; the device also comprises a transmission structure arranged between the motor and the movable shading plate.
Preferably, the device also comprises two control boxes symmetrically arranged on the outer wall of the cylinder body, and the inner parts of the control boxes are divided into a lower chamber and an upper chamber; a power supply system and a control system are arranged in the lower chamber; the motor is arranged in the upper chamber; the control box is also provided with an access box door.
Preferably, the transmission structure consists of a sliding chute, a second rotating gear, a first rotating gear, a tooth groove plate, a screw rod sleeve, a moving plate and a threaded screw rod; the utility model discloses a motor rotor, including screw lead screw, barrel, spout, fluted board, first rotating gear, movable light screen, motor rotor, screw lead screw, movable light screen, motor rotor, the welding is on motor rotor after the control box goes through the cavity roof, just the surface cover of screw lead screw has the lead screw cover, the lead screw cover is close to barrel one side surface transverse welding has the movable plate, the inside of locating the spout is inserted in the end activity that stretches out of movable plate, the vertical welding that makes progress of movable plate has the fluted board, the fluted board other end with install the second rotating gear meshing of accomodating the intracavity, and hug closely the second rotating gear meshing and install first rotating gear, movable light screen fixed mounting is at the surface of first rotating gear.
Preferably, the annular stepless dimming lamp is an LED lamp, and the lamp surface faces the center of the light guide plate.
Preferably, when the movable shading plate is completely flatly opened, the distance from the highest point to the annular lampshade is not less than the radius of the inner wall of the cylinder.
The constant illumination intelligent dimming method is characterized in that the constant illumination lighting device is adopted to constantly control the illumination intensity emitted by the light guide plate, and the method comprises the following steps: assuming that an illumination sensor is installed on the bottom surface of the light guide plate 7, the initial annular stepless dimming lamp is in a power-off state and is in a power minimum state when initially turned on; in addition, the maximum standard value of the indoor illumination is Emax, the minimum standard value of the indoor illumination is Emin, the illumination change value delta E in each sampling period is (Emax-Emin)/N, and N is an integer greater than 1; the specific control steps are as follows:
1) the illumination sensor detects whether the indoor illumination is greater than Emax, if so, the motor rotates to reduce the opening of the movable light shielding plate; if not, executing the step 2);
2) judging whether the illumination is less than Emin, if so, rotating the motor to increase the opening of the movable light shielding plate, and if not, continuing to execute the step 1);
3) detecting whether the indoor illumination is greater than Emin + delta E or not by an illumination sensor, if so, reducing the opening of the movable light shielding plate by the motor, and if not, executing the step 1);
4) detecting whether the opening of the movable light shielding plate is adjusted to the maximum value, if so, executing the step 5), and if not, executing the step 6);
5) detecting whether the indoor illumination is less than Emin by an illumination sensor, if so, starting an annular stepless dimming lamp, and if not, executing the step 1);
6) the method comprises the following steps that an illumination sensor detects whether indoor illumination is larger than Emin + delta E, if yes, step 1) is executed, and if not, the motor increases the opening of a movable light shielding plate;
7) detecting whether the indoor illumination is less than Emin by an illumination sensor, if so, turning on the annular stepless dimming lamp, and if not, executing the step 1);
8) detecting whether the indoor illumination is less than Emin by an illumination sensor, if so, turning on the annular stepless dimming lamp, and if not, executing the step 9);
9) detecting whether the indoor illumination is greater than Emin + delta E by an illumination sensor, dimming the annular stepless dimming lamp if the indoor illumination is greater than Emin + delta E, and executing the step 1) if the indoor illumination is not greater than Emin + delta E;
10) detecting whether the indoor illumination is greater than Emin + delta E or not by an illumination sensor, if so, executing step 11), and if not, executing step 1);
11) and the illumination sensor detects whether the indoor illumination is greater than Emax, if so, the annular stepless dimming lamp is closed, and if not, the annular stepless dimming lamp is dimmed.
Further, the maximum standard value of the indoor illuminance is Emax, and the determination method of the area of the gap area comprises the following steps: setting the inner diameter area of the cylinder body as A, the light guide utilization coefficient of the light guide plate as k, the luminous flux injected from the gap area as phi, the luminous flux in sunny days as phi max, the product of the light guide utilization coefficient of the inner wall of the cylinder body and the lighting cover as n, the correction coefficient as f, and the area of the gap area as m; then m is phi A/nf phi max is Emax.A2/knf. phi max, and 0<m<A; so that the size of the movable shutter plate can be further determined.
Furthermore, the movable shading plate is made of semitransparent materials, and the light transmission coefficient of the movable shading plate is set as e; then m is equal to (Emax. A)2-nek.A.phi.max)/nfk (1-e) phi.max, wherein 0. ltoreq. m<A。
Compared with the prior art, the invention has the beneficial effects that:
1. the movable light screen is arranged in the barrel, and the illumination emitted into the room is always kept constant by controlling the opening of the movable light screen, so that the requirement on the indoor illumination can be met, and the purpose of no glare can be achieved; in addition, the light guide cylinder is used for collecting and distributing sunlight in the daytime, and the solar energy-saving solar water heater has the beneficial effect of saving energy.
2. The invention changes the structure of the bottom of the light guide cylinder, constructs the annular lampshade with the cross section in the shape of auricle, installs the annular stepless dimming lamp in the annular lampshade, and encapsulates the light guide plate at the bottom, so that the device has the functions of natural light illumination and artificial light illumination, and the opening and closing and the brightness of the annular stepless dimming lamp are controlled to be linked and complemented with the function of the light guide cylinder, so that the illumination device can keep constant illumination for 24 hours all day.
3. When the movable shading plates are completely horizontally opened, gap areas are reserved between the movable shading plates, the size of the movable shading plates is determined based on the diameter of the barrel, certain gap areas are reserved in the middle areas under the condition that the movable shading plates are completely horizontally opened, and therefore indoor illumination can meet the requirement of maximum standard illumination in sunny weather.
4. The containing cavity is formed in the wall of the barrel body corresponding to the movable light shading plate, so that the movable light shading plate can be completely contained in the containing cavity without blocking light from entering, and illumination can be fully utilized under the condition of insufficient natural light.
5. The illumination sensor continuously detects the indoor illumination value, controls the opening of the movable light shielding plate through the motor and the transmission structure, and changes and adjusts the brightness of the annular stepless dimming lamp to form a closed-loop control system, so that the illumination device can always operate within a preset control illumination range.
Drawings
FIG. 1 is a schematic sectional elevation view of the structure of the present invention;
FIG. 2 is a schematic front view of the structure of the present invention;
FIG. 3 is a schematic top cross-sectional view of the structure of the present invention;
FIG. 4 is a schematic cross-sectional front view of the structure shown at A in FIG. 1 according to the present invention.
In the figure: 1. a light guide cylinder body; 11. a barrel; 12. an annular lampshade; 13. a receiving cavity; 2. a transmission mechanism; 21. a chute; 22. a first rotating gear; 23. a second rotating gear; 24. a gullet plate; 25. a screw rod sleeve; 26. moving the plate; 27. a threaded lead screw; 3. a control box; 31. a lower chamber; 32. an upper chamber; 33. an inspection box door; 4. a motor; 5. a lighting cover; 6. an annular stepless dimming lamp; 7. a light guide plate; 8. a movable light screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention is shown:
the utility model provides a constant illumination lighting device, includes light guide cylinder body 1, installs the lighting shade 5 at 1 upper orifices of light guide cylinder body, installs the light guide plate 7 at 1 lower orifices of light guide cylinder body, and light guide cylinder body 1 comprises barrel 11, set up and take in chamber 13 and the annular lamp shade 12 that barrel 1 bottom has at 11 section of thick bamboo walls of barrel, and wherein the transversal auricle form that personally submits of annular lamp shade 12, and the embedding of light guide plate 7 is installed in annular lamp shade 12 bottom. Still install the annular stepless dimming lamp 6 in annular lamp shade 12 and install and accomodate two movable light screen 8 that chamber 13 inside is the gourd ladle form including the embedding, two movable light screen 8 symmetry installation settings, and two movable light screen 8's big small shape is the same, through control annular stepless dimming lamp 6 switching and luminance, complementary with light guide tube function itself for this lighting device can both keep the illumination of permanent illuminance 24 hours all day. When the movable light shielding plates 8 are opened horizontally, the projected outer contour radian is the same as the inner wall radian of the barrel body 11, a gap area 9 is reserved between the two movable light shielding plates 8 when the movable light shielding plates are completely opened horizontally, and the illumination of the movable light shielding plates in the sunny weather reaches the maximum standard illumination requirement under the condition that the movable light shielding plates are completely opened horizontally by setting the sizes of the movable light shielding plates 8. When the movable light shielding plate 8 is stored, the movable light shielding plate can be completely stored in the storage cavity 13, and the radian of the upper surface of the movable light shielding plate 8 is completely the same as that of the inner wall of the barrel 11, so that light rays are not blocked from being injected, and further, the illumination can be fully utilized under the condition that natural light rays are insufficient. The device also comprises a motor 4 arranged on the outer wall of the barrel body 11 and used for controlling the opening degree of the movable light shielding plate 8, and a transmission structure 2 arranged between the motor 4 and the movable light shielding plate 8, wherein the motor 4 is used for controlling the transmission structure 2 to change the opening degree of the movable light shielding plate 8, so that the illumination emitted into the room is always kept constant, the basic requirement on the indoor illumination can be met, and the requirement on no glare can be met.
Further, the device also comprises two control boxes 3 symmetrically arranged on the outer wall of the barrel 11, and the interior of each control box 3 is divided into a lower chamber 31 and an upper chamber 32. A power supply system 31 and a control system 32 are disposed within the lower chamber 31. The motor 4 is mounted in the upper chamber 31 and the control box 3 also has an access box door 33. During implementation, the control box 3 is arranged at a position with a certain height away from the annular lampshade 12, so that the control box 3 is positioned above the decorative ceiling buckle plate in decoration, and the whole indoor appearance is not influenced.
Further, the transmission structure 2 is composed of a chute 21, a second rotating gear 22, a first rotating gear 23, a tooth socket plate 24, a screw rod sleeve 25, a moving plate 26 and a threaded screw rod 27; the threaded screw 27 penetrates through a top plate of an upper cavity 32 of the control box 3 and then is welded on a rotor of the motor 4, a screw rod sleeve 25 is sleeved on the outer surface of the threaded screw 27, a movable plate 26 is transversely welded on the outer surface of one side, close to the barrel 11, of the screw rod sleeve 25, the extending end of the movable plate 26 is movably inserted into the sliding groove 21, a tooth groove plate 24 is vertically welded on the outer surface of the movable plate 11 upwards, the other end of the tooth groove plate 24 is meshed with a second rotating gear 23 installed in the accommodating cavity 13, a first rotating gear 22 is installed in a mode that the tooth groove plate is tightly attached to the second rotating gear 23 in a meshed mode, and the movable light screen 8 is fixedly installed on the outer surface of the first rotating gear 22. Wherein, the motor 4 can adopt a stepless speed regulating motor with positive and negative rotation. The adoption of the transmission structure 2 can lead the transverse and longitudinal distances between the movable shading plate 8 and the motor 4 to be flexibly adjusted.
In specific implementation, in a preferred scheme, the annular stepless dimming lamp 6 is an LED lamp, and the lamp surface faces the center of the light guide plate 7, so as to maintain the uniformity of the light flux irradiating on the light guide plate 7. In addition, when the lighting device is manufactured, the distance from the highest point of the movable light shielding plate 8 to the annular lampshade 12 when the movable light shielding plate is completely flat-opened is not smaller than the radius of the inner wall of the barrel 11, so that the light emission of the annular stepless dimming lamp 6 is not influenced when the movable light shielding plate 8 is completely accommodated.
A constant illumination intelligent dimming method adopts the constant illumination device to perform constant control on the illumination intensity emitted by a light guide plate 7, and if an illumination sensor is installed on the bottom surface of the light guide plate 7, an initial annular stepless dimming lamp 6 is in a power-off state and is in a minimum power state when initially lightened; in addition, the maximum standard value of the indoor illumination is Emax, the minimum standard value of the indoor illumination is Emin, the illumination change value delta E in each sampling period is (Emax-Emin)/N, and N is an integer greater than 1; the specific control steps are as follows:
1) the illumination sensor detects whether the indoor illumination is greater than Emax, if so, the motor 4 rotates to reduce the opening of the movable light shielding plate 8; if not, executing the step 2);
2) judging whether the illumination is less than Emin, if so, rotating the motor 4 to increase the opening of the movable light shielding plate 8, and if not, continuing to execute the step 1);
3) detecting whether the indoor illumination is greater than Emin + delta E or not by an illumination sensor, if so, reducing the opening of the movable light shielding plate 8 by the motor 4, and if not, executing the step 1);
4) detecting whether the opening of the movable light shielding plate 8 is adjusted to the maximum value, if so, executing the step 5), and if not, executing the step 6);
5) detecting whether the indoor illumination is less than Emin by an illumination sensor, if so, starting the annular stepless dimming lamp 6, and if not, executing the step 1);
6) the illumination sensor detects whether the indoor illumination is greater than Emin + delta E, if yes, step 1) is executed, and if not, the motor 4 increases the opening of the movable shading plate 8;
7) detecting whether the indoor illumination is less than Emin by an illumination sensor, if so, lightening the annular stepless dimming lamp 6, and if not, executing the step 1);
8) detecting whether the indoor illumination is less than Emin by an illumination sensor, if so, lightening the annular stepless dimming lamp 6, and if not, executing the step 9);
9) detecting whether the indoor illumination is greater than Emin + delta E by an illumination sensor, dimming the annular stepless dimming lamp 6 if the indoor illumination is greater than Emin + delta E, and executing the step 1 if the indoor illumination is not greater than Emin + delta E);
10) detecting whether the indoor illumination is greater than Emin + delta E or not by an illumination sensor, if so, executing step 11), and if not, executing step 1);
11) the illuminance sensor detects whether the indoor illuminance is greater than Emax, if so, the annular stepless dimming lamp 6 is closed, and if not, the annular stepless dimming lamp 6 is dimmed.
The indoor illuminance values of the building have a standard value range, and the control of constant illuminance can be obtained by bringing the standard values of different areas into an intelligent dimming method. For example, the standard values of the illuminance for the garage are shown in the following table.
According to the intelligent dimming method, the opening of the movable light shielding plate 8 is controlled through the motor 4 and the transmission structure 2, and the brightness of the annular stepless dimming lamp 6 is automatically adjusted to form a closed-loop control system, so that the lighting device can be kept to operate in a preset control illumination range all the time. The brightness of the annular stepless dimming lamp 6 can be controlled at night according to the activities of people or no people, the brightness is normal when people pass through the annular stepless dimming lamp 6, and the brightness is automatically reduced or the annular stepless dimming lamp 6 is turned off when no people pass through the annular stepless dimming lamp.
Preferably, the maximum standard value of the indoor illuminance is Emax, and the determination method of the area of the gap region 9 is as follows: assuming that the area of the inner diameter region of the cylindrical body 11 is A, the light guide utilization coefficient of the light guide plate 7 is k, and the luminous flux incident from the slit region 9Phi is defined, the luminous flux is phi max in sunny days, the product of the light guiding utilization coefficients of the inner wall of the barrel body 11 and the light-collecting cover 5 is n, the correction coefficient is f, and the area of the gap area 9 is m; then m is phi A/nf phi max is Emax.A2/knf. phi max, and 0<m<A; so that the size of the movable light shielding plate 8 can be further determined. When the lighting device is manufactured, the size of the movable light shielding plate 8 can be determined according to a reverse pushing method, so that the luminous flux emitted when the movable light shielding plate 8 is completely horizontally opened can meet the requirement of the maximum illumination of a certain area.
Further, if the movable light shielding plate 8 is made of a translucent material and the light transmission coefficient is e, the area m of the gap region 9 is (Emax · a)2-nek.A.phi.max)/nfk (1-e) phi.max, wherein 0. ltoreq. m<A. At this time, when the movable light shielding plates 8 are completely horizontally opened, the area of the gap region 9 may be zero, that is, when the two movable light shielding plates 8 are completely horizontally opened, the gap region is seamlessly closed, and at this time, when the weather is clear, the light of the light-transmitting movable light shielding plate 8 just can meet the requirement value of the indoor maximum illuminance Emax.
In summary, according to the constant illumination device and the intelligent dimming method of the present invention, firstly, the housing cavity 13 is formed on the barrel 11 of the light guide barrel body 1, the movable light shielding plate 8 is installed inside the housing cavity 13, the opening degree of the movable light shielding plate 8 is controlled through the motor 4 and the transmission structure 2, and the luminous flux entering the room, that is, the illumination intensity is further controlled. Then, an annular lampshade 13 with a cross section in a pinna shape is arranged at the bottom of the cylinder 11, an annular stepless dimming lamp 6 is arranged in the annular lampshade 13, and the whole bottom is sealed by a light guide plate 7, so that the illuminating device integrating natural light illumination and artificial illumination is formed. Finally, the opening of the movable light screen 8 and the brightness of the annular stepless dimming lamp 6 are controlled through closed-loop intelligent dimming, so that the illumination device always keeps constant illumination to work, and the aims of saving electric energy, meeting basic illumination requirements and avoiding glare are fulfilled at the same time.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides a constant illumination lighting device, includes light guide cylinder body (1), installs lighting shade (5) at light guide cylinder body (1) suitable for reading, installs light guide plate (7) of mouthful under light guide cylinder body (1), its characterized in that: the light guide cylinder body (1) consists of a cylinder body (11), a containing cavity (13) arranged on the cylinder wall of the cylinder body (11) and an annular lampshade (12) arranged at the bottom of the cylinder body (1), the cross section of the annular lampshade (12) is in an auricle shape, and the light guide plate (7) is embedded and installed at the bottom of the annular lampshade (12); the LED lamp also comprises an annular stepless dimming lamp (6) embedded in the annular lampshade (12) and two movable shading plates (8) which are arranged in the containing cavity (13) and are in a gourd ladle shape, wherein the two movable shading plates (8) are symmetrically arranged; the radian of the outer contour of the projection of the movable shading plates (8) during flat opening is the same as the radian of the inner wall of the barrel body (11), a gap area (9) is reserved between the two movable shading plates (8) during full flat opening, and the movable shading plates (8) can be fully retracted into the accommodating cavity (13) during accommodating; the device also comprises a motor (4) which is arranged on the outer wall of the barrel body (11) and is used for controlling the opening degree of the movable shading plate (8); the sun visor also comprises a transmission structure (2) arranged between the motor (4) and the movable sun visor (8).
2. A constant-illuminance illumination device as set forth in claim 1, wherein: the device also comprises two control boxes (3) which are symmetrically arranged on the outer wall of the cylinder body (11), wherein the control boxes (3) are internally divided into a lower chamber (31) and an upper chamber (32); a power supply system (31) and a control system (32) are arranged in the lower cavity (31); the motor (4) is arranged in the upper chamber (31); the control box (3) also has an access box door (33).
3. A constant-illuminance illumination device as set forth in claim 1, wherein: the transmission structure (2) is composed of a sliding chute (21), a second rotating gear (22), a first rotating gear (23), a toothed groove plate (24), a screw rod sleeve (25), a moving plate (26) and a threaded screw rod (27); screw lead screw (27) run through control box (3) and go up welding on motor (4) rotor behind cavity (32) roof, just the surface coating of screw lead screw (27) has lead screw cover (25), the outer horizontal welding that lead screw cover (25) is close to barrel (11) one side has movable plate (26), the end activity of stretching out of movable plate (26) is inserted and is located the inside of spout (21), the outside vertical welding that makes progress of movable plate (11) has fluted plate (24), fluted plate (24) other end and second rotating gear (23) the meshing of installing in accomodating chamber (13), and hug closely second rotating gear (23) meshing and install first rotating gear (22), movable light screen (8) fixed mounting is on the surface of first rotating gear (22).
4. A constant-illuminance illumination device as set forth in claim 1, wherein: the annular stepless dimming lamp (6) is an LED lamp, and the lamp surface faces the center of the light guide plate (7).
5. A constant-illuminance illumination device as set forth in claim 2 or claim 3, wherein: when the movable shading plate (8) is completely flat-opened, the distance from the highest point to the annular lampshade (12) is not less than the radius of the inner wall of the barrel body (11).
6. A constant illuminance illumination intelligent dimming method for constantly controlling the intensity of illumination emitted from a light guide plate (7) by using the constant illuminance illumination device according to claim 1, characterized in that: assuming that an illumination sensor is installed on the bottom surface of the light guide plate (7), the initial annular stepless dimming lamp (6) is in a power-off state and is in a power minimum state when initially turned on; in addition, the maximum standard value of the indoor illumination is Emax, the minimum standard value of the indoor illumination is Emin, the illumination change value delta E in each sampling period is (Emax-Emin)/N, and N is an integer greater than 1; the specific control steps are as follows:
1) the illumination sensor detects whether the indoor illumination is greater than Emax, if so, the motor (4) rotates to reduce the opening of the movable light shielding plate (8); if not, executing the step 2);
2) judging whether the illumination is less than Emin, if so, rotating the motor (4) to increase the opening of the movable light shielding plate (8), and if not, continuing to execute the step 1);
3) an illumination sensor detects whether the indoor illumination is greater than Emin + delta E, if so, the motor (4) reduces the opening of the movable light shielding plate (8), and if not, the step 1 is executed;
4) detecting whether the opening of the movable light shielding plate (8) is adjusted to the maximum value, if so, executing the step 5), and if not, executing the step 6);
5) an illumination sensor detects whether the indoor illumination is less than Emin, if so, an annular stepless dimming lamp (6) is turned on, and if not, the step 1 is executed;
6) the method comprises the following steps that an illumination sensor detects whether indoor illumination is larger than Emin + delta E, if yes, step 1 is executed, and if not, a motor (4) enlarges the opening of a movable light shielding plate (8);
7) an illumination sensor detects whether the indoor illumination is less than Emin, if so, an annular stepless dimming lamp (6) is lightened, and if not, the step 1 is executed;
8) the illumination sensor detects whether the indoor illumination is less than Emin, if so, the annular stepless dimming lamp (6) is lightened, and if not, the step 9 is executed;
9) the illuminance sensor detects whether the indoor illuminance is greater than Emin + delta E, if so, the annular stepless dimming lamp (6) is dimmed, and if not, the step 1 is executed;
10) detecting whether the indoor illumination is greater than Emin + delta E or not by an illumination sensor, if so, executing step 11), and if not, executing step 1);
11) the illuminance sensor detects whether the indoor illuminance is greater than Emax, if so, the annular stepless dimming lamp (6) is closed, and if not, the annular stepless dimming lamp (6) is dimmed.
7. The constant-illuminance lighting intelligent dimming method according to claim 6, characterized in that: the maximum standard value of the indoor illumination is Emax, and the method for determining the area of the gap area (9) comprises the following steps: the inner diameter area of the cylinder (11) is set as A, the light guide utilization coefficient of the light guide plate (7) is set as k, the luminous flux incident from the gap area (9) is phi, the luminous flux on a sunny day is phi max, the product of the light guide utilization coefficients of the inner wall of the cylinder (11) and the lighting cover (5) is n, the correction coefficient is f, and the gap area is set as(9) The area is m; then m is phi A/nf phi max is Emax.A2/knf. phi max, and 0<m<A; thereby the size of the movable shading plate (8) can be further determined.
8. The constant-illuminance lighting intelligent dimming method according to claim 7, characterized in that: the movable shading plate (8) is made of semitransparent materials, and the light transmission coefficient is set to be e;
then m is equal to (Emax. A)2-nek.A.phi.max)/nfk (1-e) phi.max, wherein 0. ltoreq. m<A。
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| CN117858298B (en) * | 2024-03-07 | 2024-06-18 | 永林电子股份有限公司 | Sunlight and LED light mixed illumination control system for subway waiting hall |
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