The light beam of fluorescent lamp has life characteristic as shown in Figure 2, brings into use the back to reduce 20% in about 4000 hours, and thereafter 10000 hours further reduce 10%, and (with slowly deepening is irrelevant) power consumption substantially constant is constant therebetween.Again, cigarette etc. are polluting the reflecting plate and the wall of light fixture, so in general, indoor lightness descends greater than the light beam minimizing of fluorescent lamp.Therefore, during design, consider that light beam reduces other outer situation of characteristic, generally initial lightness be set brighter, not carry out light modulation in the later stage usually than final required lightness.Therefore, through consuming a large number of useless electric power for a long time.And, because of weather or time cause that the luminous flux that enters from window changes, the same indoor influence that also can be subjected to outer light because of the distance of distance window is also different, and then holding not square one of affair place and the required lightness of reception group part, so wish and after taking all factors into consideration above-mentioned all situations, to proofread and correct, but in the past and do not know to consider these situations and the light controlling system in fluorescent lamp illumination that comprehensively carries out light modulation to lightness.
As opening clear 61-231836 communique from the spy as seen, owing to utilize solar sensor 5a, the 5b be arranged near the building window to measure mainly and the brightness of all ligthing paraphernalias managed concentratedly, so the delicate variation of brightness that the place difference causes in can not corresponding building from the light quantity of outside.
The present invention is in order to improve the shortcoming of above-mentioned existing device, the light controlling system in fluorescent lamp illumination that its purpose is to provide factors such as a kind of light beam minimizing, light fixture and wall pollution of considering fluorescent lamp, weather, time, application target can comprehensively carry out light modulation, this system can save power consumption significantly.
For finishing above-mentioned purpose, light controlling system in fluorescent lamp illumination of the present invention has: be arranged at a plurality of fluorescent lamps in a plurality of surrounds that are divided respectively; Connect in each surround the high frequency more than or 2 of fluorescent lamp and decide current power supply device; Be arranged at respectively in each surround, be positioned at main from the illuminance meter on the catoptrical incoming position of this surround shone thing; Be located at respectively in each surround and change and change the control part that the whole high frequencies in this surround are decided the current value of current supply arrangement with predetermined time interval according to the output of the illuminance meter of this surround; The design illumination that each surround is had nothing in common with each other is imported the setting means that the control part of whole surrounds is set.Again, setting means are operated with wireless remote control.And then control part has that to decide the time interval shear of the current value of current supply arrangement be the switch means that long maintenance pattern and the daylight that far is shorter than the maintenance pattern utilize pattern with changing high frequency.
The place is divided into a plurality of surrounds if will throw light on, other each situation of considering each surround purposes is determined design illumination, and the control part of in advance these being imported each surround is set, then the control part output of just can predetermined time interval reading illuminance meter changes, decide the output current value of current power supply device according to all high frequencies in this this surround of variation change, proofread and correct the lightness that makes this surround and remain the design illumination of initial setting, and the minimizing of the comprehensive fluorescent lamp light beam that slowly carries out for a long time, the illumination that the pollution of light fixture reflecting surface causes descends, with the illumination change that the outer influence of light that is produced by weather that changes every day and time causes, in each surround, respectively initial designs illumination is proofreaied and correct.
Describe the present invention in detail below in conjunction with the accompanying drawing illustrated embodiment.
Fig. 1 is the block diagram of light controlling system in fluorescent lamp illumination structure, and Fig. 2 is the performance plot that changes for a long time in fluorescent lamp light beam year.Big room is divided into 4 surrounds.4 surrounds for example are side window district, the Near East, nearly window district, southern side, and closely the corridor district that separates with glass and leave window and the central area in corridor though each lightness condition that produces constantly is inequality entirely, can make the lightness in each surround even substantially.
Each surround is respectively equipped with 8 converters 1, and each converter 1 connects 9 fluorescent illumination implements 2 respectively.Converter 1 is that source power supply is transformed into high frequency (as 65KHz) electric current and the high frequency that constant current is supplied with the fluorescent illumination implement 2 connected decide current power supply device, controls output current value by the control part of being located in each surround 3 with the predetermined time interval change.Each fluorescent illumination implement 2 is that the fluorescent lamp of 2 40W is one group a structure.
The approximate centre at the top of 4 surrounds partly is respectively equipped with an illuminance meter 4, and its output signal is imported the control part 3 of this surround.The box of illuminance meter 4 is provided with the not directly incident of light that light shield makes fluorescent illumination implement 2, but and only makes in this surround reverberation incident from the shone thing of desk, bed, wall etc.In the box of illuminance meter 4 (with other box also can) be provided with the transducer 5 that receives remote signal, its output signal is imported the setting means of control part 3.4 surrounds of remote signal frequency have nothing in common with each other, the portable transmitting element 6 that sends remote signal have the switch means of distributing 4 surround channels and input design illumination on/knob down.
The control part 3 of each surround is gone up signal or following signal by transmitting element 6 and transducer 5 input in a single day, then makes the every rising of current value of the whole converters 1 in this surround or the predetermined unit that descends, and its last value is stored as design illumination.After this, detect the output signal of illuminance meter 4, the current value of whole converters 1 is changed together, thereby control to such an extent that the output signal of illuminance meter 4 is consistent with the design illumination of storage with predetermined time interval.The maintenance pattern that is applicable to the surround that roughly is not subjected to outer influence of light utilizes pattern different with being applicable to the daylight that is subjected to outer influence of light, control time is 24 hours when selecting the maintenance pattern at interval, when selecting daylight to utilize pattern, the user can select from 20 minutes, 30 minutes and 40 minutes 3 grades in advance according to outer influence of light degree.
The following describes the work of this embodiment.Consider the definite design of other situation illumination of each surround purposes, at first, in first surround, hand-held illuminance meter, the channel switch means of transmitting element 6 is transferred to channel corresponding to first surround, then change the lightness of illumination by last/knob down, the illuminance meter in the hand shows shut-down operation when reaching design illumination, and the control part 3 of first surround stores last value as design illumination.Input design illumination end setup in second and third and four surrounds equally.After this, the control part 3 of each surround automatically detects at interval the output signal of illuminance meter 4 with preset time, and the current value of change converter 1 is controlled to such an extent that the lightness of this surround is remained on the design illumination.Set design illumination in changes such as surround purposes and must change under the situation,, new design illumination is imported set in the control part 3 of this surround and got final product as long as carry out same operation at every turn.
Fig. 2 has represented the situation that the year of fluorescent lamp light beam changes for a long time, and originally design illuminance setting is become lightness corresponding to the final light beam of fluorescent lamp, at life period, keeps lightness constant on one side, is equivalent to this figure top oblique line electric power partly Yi Bian can save.And the number of partitions of surround is not limited to the division of the foregoing description, can wait other situation suitably to change according to the size of room.Be located at converter number in each surround and the fluorescent illumination implement number that links to each other with each converter and also can carry out suitable variation according to the size of this surround, the rated value of converter again.The foregoing description, though the setting means of control part constitute with the wireless remote control operation, also available hand direct control is imported, this point is self-evident.
Maintenance pattern and daylight utilize the time interval of pattern to be not limited only to the foregoing description, importantly, under the maintenance pattern situation, be only the light beam of the fluorescent lamp that slowly carries out to be reduced to proofread and correct, so get the long time, utilize under the pattern situation at daylight, change, be necessary to get the short time interval in order to follow the outer light that causes because of the time.The reason that the maintenance pattern is set is that daylight utilizes its characteristic of pattern influenced greatly by external disturbance, nearby can allergic reaction reduce the output current value that high frequency decide current power supply device as long as for example wear the people of bright clothes by illuminance meter, it utilizes this unwanted exaggerated correction in the pattern for initial eliminating daylight.
According to above explanation, light controlling system in fluorescent lamp illumination of the present invention, change for a long time in the year of having taken all factors into consideration the fluorescent lamp light beam, the pollution of long-term light fixture or wall, weather, constantly, apart from whole factors such as the distance of window, its place application target, can in each surround, carry out best light modulation, it can not only often form the comfortable luminous environment of fast adaptation with certain brightness, and can save power consumption for a long time, particularly can obtain to use the remarkable power savings in a period of time after the beginning.The setting means are operated according to wireless remote control, the extremely simple effect of the operation in the time of obtaining input design illumination.By the maintenance pattern is set, be subjected to the intraoral illumination district of outer influence of light can obtain to prevent to utilize the effect of the useless correction that pattern causes because of daylight again.