TWI569686B - Can automatically dim the lighting structure - Google Patents

Description

Automatic dimming lamp structure

The invention relates to a lighting fixture, in particular to a lamp structure which can be automatically dimmed according to the brightness of the ambient light source to produce an automatic dimming which is most suitable for illumination.

With the continuous research and development of lighting technology, many shortcomings of traditional white and tungsten light bulbs, such as power consumption, high heat and short life, have been solved by light-emitting diodes. The application of light-emitting diode (LED) lighting has gradually become popular in daily life. LED has many advantages, such as short reaction time, long service life, and does not affect its life due to continuous flicker, and because it is a solid component, there is no filament. Glass covers, etc., can withstand more shocks than fluorescent lamps, incandescent lamps, etc.

Generally, the lamp is manually turned on and off by a switch to generate illumination, and the brightness thereof is limited to a single brightness that the illuminant can provide, and cannot be adjusted. At present, the awareness of environmental protection and energy conservation is high. The power consumption of a single brightness or a constant brightness after turning on is far higher than the actual required brightness. The reason is that traditional lamps cannot adjust the brightness according to the background brightness, although tungsten wire The bulb or halogen lamp can be used with the dimmer switch for strong and weak dimming, but its shortcomings of high heat, energy consumption and short life are criticized, and its dimming system is artificially adjusted. Although the light-emitting diode has the characteristics of low power consumption, it is still not in accordance with the energy-saving requirements to continue to emit light with a single brightness after being turned on. The trick is that the operator uses the sensing component to match the illumination. Under normal conditions, the lighting fixture is turned off. Once someone or an object approaches, the sensing component senses immediately and activates the lighting fixture. Similarly, once the sensing component does not sense the object. , then turn off the lighting; in other words, the lighting fixtures only It can be turned on or off according to the sensing state, and it is still impossible to dim according to the ambient light source.

An object of the present invention is to provide a lamp structure capable of automatically dimming, which can automatically adjust the illuminance according to the illumination of the ambient light source, so as to achieve energy saving and the most suitable luminous benefit.

In order to achieve the foregoing objective, the illuminating device structure of the present invention includes at least one illuminating component; at least one photo detecting unit is configured to detect the illuminance of the ambient light source, and emit a detection signal according to the detected illuminance; The signal processing unit is configured with a standard threshold, the signal processing unit is configured to receive the detection signal, and calculate a difference between the detection signal and the standard threshold to generate a comparison value; a dimming control unit And dimming the light emitting element according to the comparison value, when the comparison value is a positive value, the dimming control unit attenuates the illuminance of the light emitting element, and when the comparison value is a negative value, the dimming control unit increases the illuminating Illumination of the component; and at least one circuit board, the light emitting component, the photodetecting unit, the signal processing unit and the dimming control unit are integrated on the circuit board.

According to an embodiment of the invention, the light detecting unit can be a light sensor.

According to another embodiment of the present invention, the at least one light emitting element is a light emitting diode.

According to another embodiment of the present invention, the comparison value is a result of subtracting the standard threshold from the illuminance measured by the detection signal, wherein when the comparison value is a positive value, the detection signal is greater than the standard valve. Value, when the comparison value is negative, the detection signal is less than the standard threshold.

The illuminating structure of the illuminating device of the invention utilizes the automatic sensing illuminance of the photodetecting unit, the signal transceiving and calculating by the signal processing unit, and finally the dimming by the dimming control unit, so that the illuminating component of the invention can be used with the ambient light source Automatic enhancement Or weaken, in order to achieve energy saving, in line with the most suitable luminous benefits, effectively solve the power consumption of traditional lamps with the same illumination, and caused by the ambient light source to be too bright or too dark.

1‧‧‧Automatically dimmable luminaire structure

11‧‧‧Lighting elements

12‧‧‧Light detection unit

13‧‧‧Signal Processing Unit

14‧‧‧ dimming control unit

2‧‧‧ boards

3‧‧‧ body

31‧‧‧ Fixed Department

32‧‧‧ switch

33‧‧‧Connector

The first figure is a three-dimensional schematic diagram of the structure of the lamp that can be automatically dimmed according to the present invention.

The second figure is a schematic cross-sectional view of a lamp structure that can be automatically dimmed according to the present invention.

The third figure is a functional block diagram of the structure of the lamp capable of automatically dimming according to the present invention.

The lamp structure 1 capable of automatically dimming can be applied to lamps of various occasions, such as lamps, table lamps of indoor skylights, or arcade lamps of outdoor riding houses. A preferred embodiment of the invention is illustrated by a luminaire for an indoor skylight panel.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 for a preferred embodiment of the illuminable lamp structure 1 of the present invention. The luminaire structure 1 capable of automatically dimming comprises a base 3 , a plurality of illuminating elements 11 , and a plurality of lights The detecting unit 12, the at least one signal processing unit 13, the at least one dimming control unit 14, and a circuit board 2. The circuit board 2 is disposed on the base 3, and the plurality of light-emitting elements 11, the plurality of light detecting units 12, the signal processing unit 13, and the dimming control unit 14 are integrated on the circuit board 2, wherein the light-emitting elements 11 are light-emitting diodes.

The light detecting unit 12 is configured to detect the illuminance of the ambient light source and send a detection signal according to the detected illuminance. Specifically, the opposite ends of the base 3 are provided with a fixing portion 31 protruding from the base 3, and each of the fixing portions 31 is provided with a light detecting unit 12, which is exposed on the surface of the fixing portion 31, and It is a kind of photo sensor, such as a photosensitive element or a photodiode, for detecting the intensity of light. In addition, the base 3 can also be provided with a switch 32 for opening and closing the lamp and a connection port 33 for connecting an external power source.

A standard threshold is set in the signal processing unit 13. The signal processing unit 13 is configured to receive the detection signal sent by the light detecting unit 12, and calculate a difference between the detection signal and the standard threshold to generate a comparison value. In a specific implementation, the standard threshold can be set to correspond to an illumination of 200 lux, but not limited thereto, and can be determined according to user requirements, wherein 200 lux is a reference for general indoor or home illumination. value. Specifically, the comparison value is a result of subtracting the standard threshold from the illuminance measured by the detection signal, wherein when the comparison value is a positive value, the detection signal is greater than the standard threshold, and the comparison value is When negative, the detection signal is less than the standard threshold.

The dimming control unit 14 dims the plurality of light-emitting elements 11 according to the comparison value. When the comparison value is a positive value, the dimming control unit 14 attenuates the illuminance of the plurality of light-emitting elements 11 when the comparison value is a negative value. The dimming control unit 14 increases the illuminance of the plurality of light-emitting elements 11.

When the lamp structure 1 of the present invention can be automatically dimmed, the lamp is turned on first. At this time, all of the plurality of light-emitting elements 11 generate a standard threshold illumination of 200 lux, and the light detecting unit 12 automatically senses the illumination of the ambient light source. And generate a pair of detection signals that should be illuminating the ambient light source. The signal processing unit 13 is configured to receive the detection signal, and calculate a difference between the detection signal and the standard threshold to generate a comparison value. In a specific implementation, when the ambient light source is 300 lux, the light detecting unit 12 generates a detection signal corresponding to 300 lux, and the signal processing unit 13 performs calculation and subtracts the 300 lux detection signal by 200 lux. The threshold value is 100 lux, which is a comparison value, and is a positive value; at this time, the dimming control unit 14 reduces the illuminance of the light-emitting element 11 to 100 lux, so that the original light-emitting element 11 can be automatically weakened. Illumination. In particular, when the comparison value is greater than or equal to the standard threshold, in other words, if the comparison value (ie, the result of the subtraction) corresponds to 300 lux, the dimming control unit 14 attenuates the illumination of the light-emitting elements 11 to one. Minimum illumination The degree is less than the standard threshold, and the minimum illuminance is preferably 50 lux, the purpose of which is to set a minimum value that reduces dimming.

Similarly, in another implementation, when the ambient light source is 100 lux, the signal processing unit 13 subtracts the detection threshold of 100 lux from the standard threshold of 200 lux, the difference being 100 lux and a negative value. Comparison value. At this time, assuming that the illuminance of the previous illuminating element 11 is a standard threshold lower than 200 lux, the dimming control unit 14 only increases the illuminance of the illuminating element 11 to 200 lux, and the upper limit of the increase is not exceeding the standard threshold. .

In summary, the auto-dimming lamp structure 1 of the present invention utilizes the automatic sensing illuminance of the photo detecting unit 12, the signal transceiving and calculation by the signal processing unit 13, and finally the dimming by the dimming control unit 14. The light-emitting element 11 of the invention can be automatically enhanced or weakened with the ambient light source to achieve energy saving and power saving, meet the most suitable luminous efficiency, and effectively solve the electric energy consumed by the traditional lighting device with the same illumination, and is too bright due to the ambient light source or The shortcomings of being too dark.

The above detailed description is intended to be illustrative of a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and other equivalents and modifications may be made without departing from the spirit of the invention. Changes are intended to be included in the scope of the patents covered by the present invention.

1‧‧‧Automatically dimmable luminaire structure

11‧‧‧Lighting elements

12‧‧‧Light detection unit

13‧‧‧Signal Processing Unit

14‧‧‧ dimming control unit

3‧‧‧ body

31‧‧‧ Fixed Department

32‧‧‧ switch

33‧‧‧Connector

Claims (5)

An auto-dimmable lamp structure, comprising: at least one light-emitting component; at least one light detecting unit configured to detect an illumination of an ambient light source, and emit a detection signal according to the detected illumination; a signal processing unit The signal processing unit is configured to receive the detection signal, and calculate a difference between the detection signal and the standard threshold to generate a comparison value; a dimming control unit is based on the comparison The light-emitting element is dimmed, and when the comparison value is a positive value, the dimming control unit attenuates the illumination of the light-emitting element, and when the comparison value is a negative value, the dimming control unit increases the illumination of the light-emitting element. And at least one circuit board, the light-emitting element, the light detecting unit, the signal processing unit and the dimming control unit are integrated on the circuit board; wherein the comparison value is measured by the detected signal minus the illumination The result of the standard threshold, wherein the comparison signal is greater than the standard threshold when the comparison value is positive, and the detection signal is less than the standard threshold when the comparison value is negative. The more negative value, and when smaller than the standard threshold value, the control unit increases the dimming the illumination of the light emitting element to the standard threshold value. The auto-dimmable lamp structure as described in claim 1, wherein the photo detecting unit can be a photo sensor. The auto-dimmable lamp structure of claim 1, wherein the at least one light-emitting element is a light-emitting diode. The auto-dimmable lamp structure according to claim 1, wherein the dimming control unit attenuates the illumination of the light-emitting element to a positive value when the comparison value is greater than or equal to the standard threshold. Minimum illumination, the minimum illumination is less than the standard Quasi-threshold value. The luminaire structure of the auto-dimmable lamp according to the first aspect of the invention, further comprising a body, the circuit board is disposed on the base body, and the opposite ends of the seat body are provided with a fixing portion, The light detecting unit.