CN2202389Y

CN2202389Y - Fluorescent colour-changing light

Info

Publication number: CN2202389Y
Application number: CN 93243793
Authority: CN
Inventors: 吴祖佑
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-08
Filing date: 1993-11-08
Publication date: 1995-06-28
Anticipated expiration: 2003-11-08

Abstract

The utility model relates to a fluorescent color-changing light, belonging to lighting technology. In an electronic controller, a three-way triangle wave voltage producer and a three-way pulse width modulator are respectively connected with a red fluorescent lamp tube, a green fluorescent lamp tube, and a blue fluorescent lamp tube; the brightness of each primary color is changed according to the rule of the triangular wave, and each two primary colors are added and mixed colors by turns, and colors of red, orange, yellow, green, cyan, blue, and purple and all intermediate colors continuously appear on an opal lamp cover.

Description

Fluorescent colour-changing light

The utility model relates to a kind of fluorescence Color-changing lamp, belongs to lighting technical field.

At present, known Color-changing lamp all is as light source with incandescent lamp bulb.Incandescent lamp bulb is that by electric energy filament to be heated to incandescent back luminous, and filament also will produce a large amount of heats when electric energy is transformed into visible light.Its light efficiency is low, the temperature height, and the light fixture of making generates heat easily.

The purpose of this utility model provides a kind of fluorescence Color-changing lamp.It uses fluorescent tube as the electricity-saving type cold light source, replaces incandescent lamp bulb, makes the fluorescence Color-changing lamp.

The purpose of this utility model is achieved in that in electronic controller three road triangle wave voltage generators, No. three pulse-width modulators are connected with red, green, blue-fluorescence fluorescent tube respectively.According to the principle of three primary colours in the colorimetry theory, the brightness of every kind of color fluorescence fluorescent tube is the triangular wave rule and changes, and makes per two kinds of primary colours take turns additive color mixture.The colour and the whole intermediate color that on the milky lampshade, occur red, orange, yellow, green, blue, blue, purple continuously.

Owing to adopt technique scheme, can use fluorescent tube to make Color-changing lamp.Its luminous efficiency is more than five times of incandescent lamp bulb, and area is big, and variable color is even, does not generate heat.

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Fig. 1. be trichromatic fluorescent light tube brightness transformation period program.

Fig. 2. be the circuit that produces three road triangle wave voltages.

Fig. 3. be No. one pulse-width modulator circuit.

Fig. 4. be the relation between expression control voltage, pulse duration and the brightness of fluorescent lamp three.

Fig. 5. be fluorescence Color-changing lamp complete machine frame principle figure.

Fig. 6. be that the fluorescence Color-changing lamp is installed generalized section.

1. red 2. green 3. blue 4. brightness, 5. not gates, 6. resistance, 7. electric capacity, 8. resistance, 9. electric capacity, 10. red light triangular waves, 11. green light triangular waves, 12. blue lamp triangular wave 13.555 time base circuits 14. resistance 15. resistance 16. electric capacity 17. control voltage input end 18.V-MOS transistors 19. high frequency transformers 20. fluorescent tubes 21. positive supplies 22. triangular waves control voltage 23. pulse widths 24. brightness of fluorescent lamp 25. three road triangular wave generators 26. No. three pulse-width modulators 27. red fluorescence lamps 28. green fluorescence lamps 29. blue-fluorescence lamps 30. milky white lampshades among the figure.

The brightness of three kinds of primary colors red (1), green (2), blue (3) is the triangular wave Changing Pattern in Fig. 1.In time, after per two kinds of primary colours colour mixtures, on milky white lampshade, obtain colour and whole intermediate color of red, orange, yellow, green, blue, blue, purple to t3 from t0.

In embodiment illustrated in fig. 2, three not gates (5) are formed sine-wave oscillator with three groups of resistance (6), electric capacity (7) timing element.Three road sine wave signals that produced pass through resistance (8), electric capacity (9) integration again, become triangular signal, this three road triangle wave voltage (10), (11), (12) are the three primary colors control signals, consistent with red (1), green (2), indigo plant (3) three primary colors luminance signal among Fig. 1, meet the required time program.

In the embodiment shown in fig. 3, No. one pulse-width modulator that draws, all the other two-way are identical, do not draw.Time-base circuit 555 integrated (13) is formed the adjustable square-wave oscillator of pulse duration with peripheral cell resistance (14,15), electric capacity (16), frequency 50 KHz, its control end (17) map interlinking 2 triangle wave voltages (10,11,12), be used for changing the threshold level of integrated interior comparator, see Fig. 4, make output pulse width (23) and control voltage (22) relation in direct ratio.

The output pulse (23) of integrated circuit (13) enters V-MOS transistor (18) and amplifies, and again through high frequency transformer (19) coupling, at the secondary coil two ends, voltage reaches kilovolt.The high frequency transformer secondary coil two ends of No. three pulse-width modulators are electrically connected in proper order with red, green, blue-fluorescence lamp tube ends filament.Fluorescent tube (20) is subjected to exciting of pulse voltage, produces aura, sees Fig. 4, its brightness (24) and pulse duration (23) relation in direct ratio.Like this, by the triangle wave voltage (22) that is input to time-base circuit control end (17), get final product the brightness (24) of linear regulation fluorescent tube.

In the embodiment shown in fig. 5, it is fluorescence Color-changing lamp complete machine block diagram, its variable color process is such: in electronic controller, three road triangle wave voltage generators (25) produce the triangle wave voltage (10,11,12) of representing the three primary colors luminance signal, deliver to the time-base circuit input (17) of No. three pulse-width modulators (26), obtain three road widened pulses, deliver to red (27), green (28), blue (29) fluorescent lamp two ends, make three-color fluorescent lamp according to Fig. 1 rule colour mixture, on milky white lampshade, variable color occurs.

In embodiment illustrated in fig. 6, expression fluorescence Color-changing lamp is installed generalized section, and near discharging, so that color changeable effect is evenly soft, outer cup is with milky white lampshade (30) with three kinds of fluorescent tubes (27,28,29).

Claims

A kind of fluorescence Color-changing lamp, in electronic controller, three road triangle wave voltage generators are electrically connected in proper order with No. three pulse-width modulators, it is characterized in that: the high frequency transformer secondary coil two ends of No. three pulse-width modulators are electrically connected in proper order with red, green, blue-fluorescence lamp tube ends filament.