JPH0547353A - Variable-color fluorescent lamp device - Google Patents

Abstract

PURPOSE:To unify the color of the light radiated from a glass tube by assembling multiple monochromatic fluorescent lamps in the glass tube coated with a diffusion film with a specific thickness on the inner face, and flash-controlling them from the outside. CONSTITUTION:Fluorescent lamps 3 independently coated with red, green, and blue phosphors are assembled along the axial direction glass tube 1 coated with a diffusion film 2 with the thickness of 4-40mg/cm<2> on the inner face. When two or three lamps 3 are concurrentry lighted by an external flash control device, the light radiated from the lamps 3 is uniformly mixed by the film 2 coated on the inner face of the tube 1, and the homogeneous luminescence color is obtained. the thickness of the film 2 is 4-10mg/cm<2> or below, the light coin is not sufficiently mixed. If it is 10mg/cm<2> or above, the absorption of the radiation light is increased, and the light quantity is reduced. The color of the light radiated from the glass tube 1 can be made homogeneous.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable color fluorescent lamp device.

[0002]

2. Description of the Related Art Fluorescent lamps have the characteristic that the emission color can be changed by changing the type of fluorescent material coated on the inner surface of the glass tube, and are therefore widely used for purposes other than general lighting. . However, since it is impossible to change the emission color with a single fluorescent lamp, some efforts have been made to change the emission color with a single device incorporating a plurality of fluorescent lamps. In this case, a plurality of monochromatic fluorescent lamps (for example, red fluorescent lamps, green fluorescent lamps, and blue fluorescent lamps) are arranged in a plane, and a milky white acrylic plate is installed in front of them to realize a uniform light emitting surface. Is known.

[0003]

The conventional variable color fluorescent lamp apparatus uses ordinary fluorescent lamps and arranges them in a plane, so that the apparatus becomes large and the place where it can be installed is limited. There was a big drawback.

The present invention has been made to solve the above-mentioned conventional problems, and provides a compact variable-color fluorescent lamp device capable of changing the emission color.

[0005]

To achieve this object, the variable color fluorescent lamp device of the present invention has a film thickness of 4 to 10.
A plurality of monochromatic fluorescent lamps are incorporated inside a glass tube having a diffusion film of mg / cm ² coated on the inner surface thereof, and the fluorescent lamps are controlled to blink from the outside.

[0006]

With this configuration, since a plurality of single-color fluorescent lamps are incorporated inside the glass tube having the diffusion film having the limited amount of film thickness coated on the inner surface thereof, the light emitted from the glass tube is emitted. Color can be uniform.

[0007]

[Example] As shown in FIG. 1, an inner diameter of 36 mm and a length of 300
A diffusion film 2 made of titanium oxide having a film thickness of 5 mg / cm ² is deposited on the inner surface of a glass tube 1 having a size of mm. This is performed by a conventionally known deposition method, that is, by applying titanium oxide to the inner surface of the glass tube 1 and drying. And
Inside the glass tube 1, a single color fluorescent lamp 3 having a tube outer diameter of 14 mm and a length of 280 mm, which is obtained by independently applying a red phosphor, a green phosphor and a blue phosphor on the inner surface of the glass tube along its axial direction, is provided. Each one is incorporated. Bases 4 are fixed to both ends of each glass tube, a pair of pins 5 is attached to each base, one end of a lead wire 6 is connected to each pin, and the other end is a blinking control installed outside. It is connected to the device 7.

With the above-mentioned structure, the variable color fluorescent lamp device according to the embodiment of the present invention has two single-color fluorescent lamps 3 built in the glass tube 1 by the external blinking control device 7. When three lights are turned on at the same time, each fluorescent lamp 3
Light emitted from the glass tube 1 is uniformly mixed by the diffusion film 2 attached to the inner surface of the glass tube 1, and a uniform emission color is obtained.

According to the experiment, the film thickness of the diffusion film 2 is 4 mg / cm ²
When the value is below the range, the outline of the fluorescent lamp 3 incorporated in the glass tube 1 is sufficiently recognized from the outside of the glass tube 1, and it is recognized that the light colors are not sufficiently mixed. When the film thickness of ² is more than 10 mg / cm ² , homogeneous light mixing can be obtained, but the ratio of the light emitted from the fluorescent lamp 3 being absorbed by the diffusion film 2 increases, and as a result,
It was found that the amount of light emitted from the variable color fluorescent lamp device was significantly reduced, and was found to be unsuitable for practical use. From the above, the thickness of the diffusion film is preferably in the range of 4 to 10 mg / cm ² .

[0010]

As described above, according to the present invention, a plurality of monochromatic fluorescent lamps are incorporated in a glass tube having a diffusion film having a limited amount of film on the inner surface thereof. It is possible to provide a compact variable-color fluorescent lamp device in which lights from these monochromatic fluorescent lamps are uniformly mixed by controlling blinking from the outside and a uniform emission color can be obtained.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing an example of a fluorescent lamp used in the device of the present invention.

FIG. 2 is a partially cutaway front view of a variable color fluorescent lamp device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Glass tube 2 Diffusion film 3 Monochromatic fluorescent lamp 7 Flashing control device

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location H05B 37/02 L 8313-3K // F21S 3/00 Z 7913-3K

Claims (1)

[Claims] 1. A plurality of single-color fluorescent lamps are incorporated in a glass tube having a diffusion film having a thickness of 4 to 10 mg / cm ² coated on its inner surface, and the fluorescent lamps are controlled to blink from the outside. Variable color fluorescent lamp device.