BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a diagram schematically showing a conventional light-adjusting device for a light bulb.
FIG. 2 is a diagram schematically showing a light-adjusting device for a computer monitor.
FIG. 3 is a diagram schematically showing the architecture of the natural light-generating device according to the present invention.
FIG. 4 is a diagram showing the permutation and combination of the ultra-low frequencies of the light source according to the present invention.
FIG. 5 is a diagram schematically showing a first embodiment of the present invention.
FIG. 6 is a diagram schematically showing a second embodiment of the present invention.
FIG. 7 is a diagram schematically showing a third embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Refer to FIG. 3 a diagram schematically showing the architecture of the natural light-generating device according to the present invention. The natural light-generating device 3 according to the present invention comprises:
a modulated control unit 31, receiving the lighting signals detected by a light-sensing unit 2 and transforming the lighting signals into control signals; and
an ultra-low frequency sinusoidal-wave generator 4, receiving the control signals generated by the modulated control unit 31, having a timing-generating unit 41, a waveform-generating unit 42 and an amplitude-generating unit 43, wherein the ultra-low frequency sinusoidal-wave generator 4 adjusts the light brightness of output devices via one of the following four types of control circuits.
The first type control circuit: the timing-generating unit 41 generates frequencies according to the control signals; next, the waveform-generating unit 42 receives the frequencies and performs the permutation and combination of the frequencies to generate waveforms and outputs to the waveforms to the amplitude-generating unit 43; and then, the amplitude-generating unit 43 utilizes the waveforms to generate amplitudes to control the brightness of light-generating elements 5.
The second type control circuit: the timing-generating unit 41 generates frequencies according to the control signals; the generated frequencies are directly output to the amplitude-generating unit 43; and then, the amplitude-generating unit 43 performs the combination of the generated frequencies to generate amplitudes to control the brightness of the light-generating elements 5.
The third type control circuit: the waveform-generating unit 42 receives the control signals and performs the permutation and combination of the control signals to generate waveforms and outputs the waveforms to the amplitude-generating unit 43; and then, the amplitude-generating unit 43 utilizes the waveforms to generate amplitudes to control the brightness of the light-generating elements 5.
The fourth type control circuit: the amplitude-generating unit 43 directly utilizes the control signals generated by the modulated control unit 31 to generate amplitudes to control the brightness of the light-generating elements 5.
The abovementioned four types of control circuits are used to adjust the light brightness of the light-generating elements 5 and simulate the delicate variation of natural lighting. The parameters of the brightness variation include: the upper brightest point, the mean brightest point and the lower brightest point.
Refer to FIG. 4 a diagram showing the permutation and combination of the ultra-low frequencies of the light source according to the present invention. The ultra-low frequency sinusoidal-wave generator of the present invention can output a first ultra-low frequency section 6, a second ultra-low frequency section 7 and a third ultra-low frequency section 8. For each frequency section, the horizontal axis denotes the time interval determined by the timing-generating unit 41, and the vertical axis denotes the amplitudes generated by the amplitude-generating unit 43, and the waveform-generating unit 42 generates the waveforms formed of the coordinates of the horizontal and vertical axes. The first ultra-low frequency section 6 has multiple sets of frequency ranges respectively arranged inside multiple sets of time intervals according to a specified order. The second ultra-low frequency section 7 has multiple sets of frequency ranges respectively arranged inside multiple sets of time intervals randomly; thus, the time length of the waveform is shorter. The third ultra-low frequency section 8 has one frequency combination arranged randomly inside the time interval between the longest time interval and the shortest time interval, and the time length of the waveform is the longest. From those described above, it is known that the control signals perform the permutation and combination to form the driving signals of different timings, frequencies and amplitudes in different frequency sections. The driving signals formed via the permutation and combination of the abovementioned three types of frequency sections are used to create the gentle and leisurely variation of lighting rhythm to simulate the variation of natural lighting and generate ocular massage.
The natural light-generating device 3 of the present invention not only can incorporates with the signals of the light-sensing unit 2 to adjust the light-source system to obtain the lighting of natural rhythm but also can save energy according to the exterior light brightness. Therefore, the present invention has the function of allocating the brightness of the light-generating elements to match the background lighting. The background-matching lighting-allocation function is to be exemplified below.
Refer to FIG. 5 a diagram schematically showing a first embodiment of the present invention. There are various inconveniences in manually controlling the light bulb 51-like devices with the conventional fine-tuning switch 1. In the present invention, the background-matching lighting-allocation function is used to control the brightness of light source. Firstly, the light-sensing unit 2 detects lighting signals and inputs the lighting signals to the natural light-generating device 3 to implement the background-matching lighting-allocation function. The permutation and combination of three types of frequency sections is performed to form amplitudes according to the timing waveforms of the brightness of light source, and the amplitudes control output devices. Thereby, the light intensities of the light bulb 51 and the energy-saving lamp 52 are automatically regulated according to the rhythm of the external natural lighting. Thus, not only energy is saved, but also none circuit short will occur.
Refer to FIG. 6 a diagram schematically showing a second embodiment of the present invention. Generally, homes, offices and schools use fluorescent lamps 54 as lighting devices. However, the brightness of the fluorescent lamps 54 is incapable of being regulated but fixed and intense, and eyesight will be harmed after a long time stay under such a kind of lighting. In the present invention, the background-matching lighting-allocation function is used to control the light intensities of the fluorescent lamps 54. Similarly, the light-sensing unit 2 detects lighting signals and inputs the lighting signals to the natural light-generating device 3, and the natural light-generating device 3 outputs signals to control the fluorescent lamps 54. Thereby, the light intensities of the fluorescent lamps 54 are automatically regulated according to the brightness of background lighting. The device of the present invention can sense the brightness of background lighting and can simulate the fine variation of the rhythm of natural lighting. Thus, ocular health is protected.
Refer to FIG. 7 a diagram schematically showing a third embodiment of the present invention. Modern people often overuse computers to play games, write programs and so on. Repeated long-time exposure to the computer monitor 53 will harm ocular health. The device of the present invention may also be installed to the computer monitor 53. The light-sensing unit 2 detects the lighting signals of the lighting devices surrounding the computer, and the natural light-generating device 3 appropriately regulates the brightness of the light source of the computer monitor 53 to implement ocular massage. The humanized design of the present invention protects ocular health. Further, the gentle and leisurely variation of the rhythm of the light source, which is implemented by the background-matching lighting-allocation function, can also achieve energy efficiency.
Those described above are the preferred embodiments to exemplify the present invention. However, it is not intended to limit the scope of the present invention. Any equivalent modification and variation according to the spirit of the present invention is to be also included within the scope of the present invention.
Patent Application
20080048568
