JPS6217902A - Color varying lighting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a variable color lighting device that can freely change the color of emitted light with one device.

[Background technology]

In recent years, the use of lighting to create a space has become more diverse, and more than just turning lamps on and off, various techniques are being used to actively create an atmosphere using lighting. As a representative example, dimmable lighting devices that can freely change the brightness of the lighting according to the needs of the occasion have become widespread, mainly in theaters and theaters. Furthermore, in recent years, there have been techniques that have created a display-like effect by lining up multiple lamps with different emission colors and flashing or dimming them individually. Color-adjusting lighting devices that change the hue of the mixed color light according to the amount of light stored therein have already been put into practical use in some areas, and various methods have been proposed.

A conventional example of such a color adjusting lighting device is shown below.

Figure 1 is a schematic diagram of a method using an incandescent light bulb.
is a diffuser, and 2m, 2b, and 2c are colored incandescent bulbs that emit light of different colors. Moreover, FIG. 2 is a schematic diagram of a system using a warning light. In the figure, 1 is a diffusive device, and 3a, ab, and ac are color fluorescent lights that emit light of different colors. According to these devices, a plurality of lamps (e.g., each emitting color is red, green, and blue) housed in the diffuse genital organ are individually illuminated at points ti1. Alternatively, by controlling the light, it is possible to change the color of the mixed color light obtained through the diffusive U fixture 1, and a color-adjustable lighting fixture can be obtained. However, all of these methods have the disadvantage of increasing the size of the equipment and circuitry due to the integration of multiple lamps into the same test chamber.

In view of these drawbacks, the present inventor has already proposed a color discharge lamp that can freely change the emission color of a single lamp and a method for controlling the color discharge lamp (Tokuhon Shodan No. 131593, etc.). The basic structure and operation of the device will be explained next.

Figure 3 shows the basic structure of the above color discharge lamp.
al is a side view, and b) is a top view. A discharge space 6 airtightly formed by an outer tube 4 and a stem 5 is filled with several toor of rare gas and mercury pyroelectric, and the inner surface has different luminescent colors. Three U-shaped inner tubes 7a, 7b, 7c of approximately the same shape coated with phosphors of (for example, the three primary colors of red, green, and blue)
Each inner tube 7a, 7b,
One end of 7c is connected to three electrodes 8a arranged on the stem 5,
%C is closely fixed around sb and 8c, respectively,
The other end 9 is connected to another common electrode lO arranged on the stem 5.
It is arranged so that it opens near the.

The lighting circuit shown in Figure Is4 is a 1f lamp consisting of a primary discharge lamp FL, a discharge path selection switch Sv, and a current-limiting variable resistor VR.
The if column circuit is operated with a 1u current power source v1.

As shown in the time chart of FIG. 5, the operation of the discharge path selection switch Sw selects the three inner tubes 7a, 7b, 7.
This is done by sequentially switching the discharge of c. In other words, the period T is the three inner tubes 7a and 7b.

By dividing the light emitting period into 7C and changing the ratio of the light emitting periods, the ratio of the luminous flux emitted from each inner tube 7a, 7b, 7c is changed, and the emitted color (mixed color λ) is changed. In the time chart shown in Fig. 5, '1'l is white, T2 is white-yellow, and T3-T4 are yellow.Also, if the period 1' is set to approximately IQn1m, each inner tube 7a, 7b, and 7c appear to be lit at the same time.

Although such a variable color discharge lamp device has a plurality of discharge paths, only one current-limiting impedance is required, which is advantageous in terms of cost and size reduction.
Since the circuit current remains approximately constant even if the mixed color (mixed color) is changed, the common electrode lO is always kept at an appropriate temperature, and the three
This method is extremely advantageous in terms of lifespan and responsiveness to deterioration of luminescent color compared to the case where individual fluorescent lamps are dimmed individually.

In addition, there are devices that integrate multiple lamps that emit light of different colors, such as the -toki (Figures 1 and 2), and lamps that can emit light in multiple colors by themselves (Figures 1 and 2). When producing a lighting device that can ignite the mixed color light by covering each with a diffusive device as shown in Fig. 3), both methods had the following problems.

l) Color unevenness (non-uniformity of light color) is likely to occur on the light emitting surface.

2) The entire diffuser fixture containing the lamp can be integrated into one light IJI
Considering its shape, it can only take the form of a surface light source or a point light source, and it is difficult to obtain a so-called line light source form, which limits its use.

[Purpose of the invention]

The present invention was made in view of the problems of the imperial era, and its purpose is to provide a variable color illumination device that has excellent uniformity of light color on a light emitting surface and can be used as a linear light source. It is in.

[Disclosure of the invention]

FIG. 6 shows the basic configuration of the present invention, in which at least two
A light source section that can emit light of different colors and more, and this light source section l
It consists of a light source accommodating part 11 that contains and holds the light source, and a cylindrical diffused light emitting part that guides the light emitted from the light source part (2).

Next, the operation of the present invention will be explained with reference to FIG.

When the light emission L (IN) from the light source section B is input into the diffused light emitting section, this light emission is output as a diffused light L (OUT) from the entire surface of the diffused light emitting section.

Therefore, when the light emission L (IN) from the light source section is a simultaneous light emission of K plural colors, the output light L (OUT) from the diffused light emitting section becomes a uniform mixture of these plural colors. For example, the light emission L (IN) from the light source section 13 is red,
When composed of the three primary colors of green and blue, L (0[TT
) is obtained as a uniform mixed color light of these three primary colors, and the light color of the mixed color light can be freely changed by adjusting the emission ratio of each of red, green, and blue. In addition, in the present invention, it is desirable that the light source housing part 11 be formed of an opaque member so that the light source part B inside thereof cannot be seen from the outside.

Next, a specific embodiment of the present invention is shown in FIG.

A reflective membrane is disposed on the inner surface of the light source housing section 11 formed in a cylindrical shape, thereby preventing the light source opening from being visible from the outside and preventing the emitted light from flowing out from the peripheral wall of the light source housing section 11. lose. Furthermore, a reflector plate U is disposed at the end of the light source storage unit 11 opposite to the diffused light emitting unit (2), and the light emitted from the light source opening is diffused by the reflector plate 14 and the reflective film. You will be guided to the light emitting part. On the other hand, the diffused light emitting section includes the light guide section 16 and the diffusion film 1 formed on the inner peripheral wall surface.
7, the light emitted from the light source section B is transmitted through the light guide section, passes through the diffusion film 17, and is output to the outside.

Next, a specific example of the configuration of the light source section 13 is shown in Fig. 9. 18+ in the same figure is a turntable incandescent light bulb 18a with different emission colors.
, 18b, and 18c form a light source section.For example, if the emitted light colors of these several bulbs are red, green, and blue, respectively, by emitting light from each of them, diffused light emission can be achieved. The mixed color light from the school is red,
Based on the three primary colors of green and blue, intermediate colors between them can be freely obtained. If the total length of the diffused light emitting section is made sufficiently long using this method, the entire device can be used as a linear light source. However, in this case, since multiple light bulbs are used, the outer diameter R of the diffused light emitting part becomes large, so if the total length of the diffused light emitting part is not long, it will be difficult to use as a linear light source. . Therefore, Figure 1b
As shown in FIG. 1, if the light source section 8 is formed by the cuff discharge lamp 19 that can emit light in multiple colors with one lamp as described above, the outer diameter R, is smaller than the outer diameter R, It can be made smaller, and the function of the entire device as a line light source is further strengthened.

Fig. 9 1al, lb) In both cases, compared to the conventional case in which a light source section with multiple emitting colors is directly covered with a diffusive device (outer cover), the color at the light emitting surface 2 is There is almost no unevenness and uniform mixed color light can be obtained.

A further embodiment of the invention is shown in FIG. 1O. .

In this embodiment, in addition to the light source accommodating part 1 having a nose source part n inside, which is disposed at one end of the diffused light emitting part, a light source part 1 is also provided at the other end of the diffused light emitting part. A light source storage section t with
Add r and b. That is, a light source section is provided at both ends of a diffused light emitting section.

With such a configuration, not only the luminous flux from the diffused light emitting section is improved, but also a linear light source with even better production effects can be obtained by making the light colors of the light source sections at both ends different from each other. .

In the present invention, the cross-sectional shape of the cylindrical diffused light emitting section 12 may be circular, square, or triangular, and may be formed into any shape depending on the purpose.

In addition, the color discharge lamp 19 that can provide a plurality of luminescent colors with a single rung, as shown in the embodiment shown in FIG. 9 1b), is limited to the #l construction lamp as shown in FIG. 3. Rather, as shown in FIG. 11, there are basically multiple parallel discharge paths 18a, each of which emits light of a different color.
b, IBc and multiple 1[rM 19 & , +9b
, 19c and a single common voltage i facing these
(a) and has multiple discharge paths IBm, 18b
, Igc, it goes without saying that any structure that forms the same airtight space via the connecting space 21 is sufficient.

According to the present invention as described above, it is possible to obtain a linear light source whose emission color can be freely changed as a whole device with a relatively simple structure. It is possible to add new and unprecedented effects to applications where tube lamps were previously used.

Furthermore, if the light source inside the device can be easily attached and detached,
When the light source is a point light source such as an incandescent light bulb, an illumination device that can be used as either a point light source or a line light source is obtained.

〔Effect of the invention〕

In the present invention, by combining a light source section consisting of a plurality of light emitting sections with different light colors and a cylindrical diffused light emitting section for obtaining mixed color light of these 16 emitted colors, the emitted light color can be changed over the entire light emitting surface. We were able to obtain a linear source whose emission color was uniform over the entire area and whose emission color was variable.

[Brief explanation of the drawing]

Figures 1 and 2 are simplified diagrams showing conventional examples, Figure 3 1al is a front view of a conventional variable color fluorescent lamp, Figure 3 1b+ is a plan view of the same, and Figure 4 shows the same lamp turned on. 5 is a time chart of the same as above, FIG. 6 is a basic configuration diagram of the present invention, FIG. 7 is an explanatory diagram of the same as above, and FIG. 8 is a main part of an embodiment of the present invention. Cross-sectional view shown in Fig. 9 1
81, ltl to 11 are simplified diagrams showing different embodiments of the present invention. Minister: Diffuse light emitting section, ■: Light source section.

Claims (4)

[Claims] (1) A variable color illumination device comprising a light source section having a plurality of light emitting sections that emit light of different colors, and a cylindrical diffused light emitting section that guides the light emitted from the light source section and diffuses it to the outer surface. (2) The variable color lighting device according to claim 1, wherein the light emitting parts are mutually independent color lamps. (3) The variable color lighting device according to claim 1, wherein the light source section is a single variable color lamp. (4) The variable color lighting device according to claim 1, 2, or 3, wherein the mutually different emission colors are red, green, and blue.