JPH09159580A - Solar radiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar radiation device having the capability of emitting radiation energy having a characteristic approximate to sunlight by obtaining radiation energy within the visible ray zone of sunlight from a metal halide lamp, and obtaining radiation energy approximate to the spectral distribution of the infrared ray zone from a tungsten halogen lamp. SOLUTION: A solar radiation device 1 is formed to be movable up and down, and right and left on the operation of a drive device 2. Furthermore, a lighting system 4 is formed out of a plurality of metal halide lamps 5 and tungsten halogen lamps. In this case. the device 1 can be controlled so that a ratio of radiation energy in a visible ray zone to radiation energy in a infrared ray zone emitted from the device 4 is within ±10% for a ratio of Pv/Pi=0.8, provided that Pv is radiation energy in the visible ray zone (wavelength equal to or above 400nm and less than 800nm) of sunlight, and Pi is radiation energy in the infrared ray zone (wavelength between 800nm and 2,500nm).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar radiation device capable of obtaining a spectral distribution similar to sunlight.

[0002]

2. Description of the Related Art An insolation device is used as a means for forcibly testing and investigating the durability and the degree of deterioration of articles in a short period of time. As this solar radiation device, for example, an actual Kaihei 3-30
As disclosed in Japanese Patent No. 754, the apparatus includes a main lamp unit and a plurality of lamp units tiltably provided around the main lamp unit, each of which is provided with a large number of infrared lamps. Then, infrared light is mainly radiated as energy from the infrared lamp so that a solar radiation test of the vehicle body can be performed.

[0003]

However, in a solar radiation device in which only infrared light is approximated to sunlight, the degree of approximation in the visible light region of sunlight is not sufficient, so the evaluation test is limited to thermal testing. However, there is a problem that the use of the solar radiation device is limited.

It is an object of the present invention to provide a solar radiation device that radiates radiant energy having characteristics similar to sunlight.

[0005]

According to a first aspect of the present invention, there is provided a driving device, a lighting device including a metal halide lamp and a halogen bulb movably configured by the driving device, and an infrared light region in sunlight. (Wavelength 800 nm
Specified at 2,500 nm or less. ) Radiant energy Pi of visible light region (wavelength 400nm or more 800n
Specify less than m. ) Radiation energy Pv ratio Pv
/Pi=0.8, a metal halide lamp and a halogen light bulb are controlled so that the ratio of the radiant energy in the visible light region to the radiant energy in the infrared light region emitted from the lighting device is within ± 10%. And a spectral distribution control unit disposed on at least one of the above.

In the present invention, the radiant energy of the illuminating device is divided into the visible light region and the infrared light region, respectively, and from the metal halide lamp side, the radiant energy mainly approximated to the spectral distribution of the visible light region of sunlight is From the halogen bulb side, radiant energy similar to the spectral distribution of sunlight in the infrared region is radiated. Then, the lighting device efficiently radiates radiant energy that approximates the spectral distribution of sunlight from the visible light region to the infrared light region.

According to a second aspect of the invention, in the solar radiation device according to the first aspect, the spectral distribution control means is provided independently for each of the metal halide lamp and the halogen light bulb.

In the present invention, the lighting device separately adjusts the spectral distribution control means of the halogen bulb and the spectral distribution control means of the metal halide lamp, and radiates radiant energy close to the spectral distribution of sunlight.

According to a third aspect of the present invention, in the solar radiation device according to the second aspect, the spectral distribution control means of the metal halide lamp has a reflection surface formed with an optical interference film for mainly controlling the wavelength of 500 nm or less of the radiant energy of the metal halide lamp. The spectral distribution control means of the halogen bulb is a reflection surface or a filter formed with an optical interference film that mainly controls the wavelength of 600 nm or less of the radiant energy of the halogen bulb.

In the present invention, the radiant energy of the illuminating device is divided into the visible light region and the infrared light region, respectively, and from the metal halide lamp side, the radiant energy approximated to the spectral distribution of the visible light region of sunlight is converted into halogen. From the light bulb side, radiant energy that is close to the spectral distribution of sunlight in the infrared region is radiated.

Therefore, the infrared light region of sunlight (defined as a wavelength of 800 nm or more and 2500 nm or less).
Visible light region (wavelength 400 nm
Specified in the range of at least 800 nm. ), The ratio of the radiant energy in the visible light region to the radiant energy in the infrared light region emitted from the lighting device is within ± 10%.

The spectral distribution control means may be, for example, a dichroic mirror having an optical interference film formed on the reflecting surface.
Further, such a dichroic mirror and a dichroic filter may be combined to provide a more accurate spectral distribution control means.

Further, the dichroic filter as the spectral distribution control means is not limited to the one formed on the front cover of the luminaire, but may be formed on the surface of the bulb forming the metal halide lamp or the halogen bulb.

Further, the spectral distribution control means may be formed not only in the metal halide lamp and the halogen bulb, but also in at least one of the lamps when a predetermined spectral distribution energy can be obtained as it is.

According to a fourth aspect of the present invention, in the solar radiation device according to the first aspect, a plurality of metal halide lamps and halogen bulbs are alternately arranged adjacent to each other.

According to the present invention, the metal halide lamp and the halogen bulb are arranged vertically and horizontally so that they are adjacent to each other, and the numbers thereof are substantially equal to each other, and the radiant energy in the visible light region and the infrared region emitted from each lamp side is radiated. Are approximately evenly mixed, so that the spectral distribution of the radiant energy of the lighting device approximates the spectral distribution of sunlight.

According to a fifth aspect of the invention, in the solar radiation device according to the first aspect, the metal halide lamp and the halogen bulb are provided with a lighting circuit for lighting each of them.

In the present invention, the metal halide lamp and the halogen bulb are controlled by the electric power output from the circuit electrically connected to each lamp.

Therefore, for example, even if one lamp fails, the other lamps are turned on and off independently, and visible to the radiant energy in the infrared light region (defined as a wavelength of 800 nm to 2500 nm) in sunlight. The ratio of the radiant energy in the visible light region to the radiant energy in the infrared light region emitted from the lighting device is within ± 10% with respect to the radiant energy ratio in the light region (wavelength 400 nm or more and less than 800 nm). Can be adjusted to.

In addition, the lighting voltage of the lighting circuit of the metal halide lamp and the lighting voltage of the lighting circuit of the halogen bulb are independently adjusted, and the spectral distribution of the radiant energy on the object to be irradiated is desired to be a spectral distribution other than that similar to sunlight. You may adjust to distribution.

According to a sixth aspect of the invention, in the solar radiation device according to the first aspect, a plurality of illumination devices are arranged in parallel, and each is independently movable in the vertical and horizontal directions.

In the present invention, the irradiation intensity on the object to be irradiated is adjusted.

Although the number of lighting devices has been described as two, the number of the lighting devices may be at least one, and the numbers of metal halide lamps and halogen bulbs for mixed lighting may be appropriately determined according to the object to be illuminated. The arrangement of the lamps is not limited to the exact alternating arrangement, and it may be determined according to the area of the irradiation target.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the solar radiation device of the present invention will be described below with reference to FIGS.

FIG. 1 is a schematic view of a solar radiation device 1 showing an embodiment of the present invention. The solar radiation device 1 includes a drive device 2 and
There are a plurality of sets, here two sets of bases 3 and 3 connected to this drive device, and these bases 3 and 3 are provided with lighting devices 4 and 4, respectively. These bases 3 and 3 are independently configured and can be moved vertically and horizontally by the driving device 2. Reference numeral 8 is a lighting circuit unit of the lighting devices 4 and 4.

The solar radiation device 1 is installed, for example, in a room where sunlight does not enter, and the radiant energy emitted from the illumination devices 4 and 4 provided on the bases 3 and 3 is a vehicle 9 to be irradiated. The solar radiation test of the vehicle body of the automobile 9 is performed by irradiating the interior of the vehicle.

FIG. 2 is a schematic view of the illumination devices 4 and 4. 3 is a partially cutaway side view of the metal halide lamp lighting fixture 5, and FIG. 4 is a partially cutaway side view of the halogen bulb lighting fixture 6. A lighting device 5 for a metal halide lamp and a lighting device 6 for a halogen bulb are housed in the lighting device 4.

Lighting device 5 for this metal halide lamp
Is a base portion 5a, a reflecting mirror 5b attached to the base portion 5a, a socket 5c arranged in the base portion 5a,
A 1 Kw metal halide lamp ML attached to the socket 5c, a front cover 5d made of translucent glass provided in an opening of the reflecting mirror 5b, and the front cover 5d.
And a dichroic filter film 7M as a spectral distribution control means formed in the above.

Also, the lighting fixture 6 for the halogen light bulb, like the lighting fixture 5 for the metal halide lamp, has a base portion 6a,
The reflecting mirror 6b attached to the base 6a and the base 6
a socket 6c disposed in a, a 500w halogen light bulb HL mounted in the socket 6c, and a reflecting mirror 6b
The front cover 6d made of translucent glass is provided in the opening of the front cover, and a dichroic filter film 7H as a spectral distribution control means formed on the front cover 6d.

The dichroic filters 7M and 7H forming the spectral distribution control means are made of titanium oxide (TiO 2) forming a high refractive index layer on the glass surfaces of the front covers 5d and 6d.
2) and silicon oxide (SiO 2) that constitutes the low refractive index layer.
2) and the like are alternately laminated to form an optical interference film.

As shown in FIG. 2, the two sets of lighting devices 4 and 4 are provided with a lighting device 5 for metal halide lamps.
Tables and 118 lighting fixtures 6 for halogen bulbs are alternately arranged vertically and horizontally adjacent to each other with the front covers 5d and 6d facing downward.

Further, the metal halide lamp ML and the halogen bulb HL mounted on the lighting fixtures 5 and 6 are also provided.
Is an output control unit 8 of the metal halide lamp ML having a lighting voltage adjusting function and the like from the power supply unit 8a constituting the lighting circuit 8.
b and the output control unit 8c of the halogen bulb HL.

When the power source 8a is turned on and the lighting voltage is adjusted by the respective output controllers 8b and 8c to energize and light all the metal halide lamps ML and all the halogen bulbs HLI, the lights formed on the front covers 5d and 6d are illuminated. With the interference films 7M and 7H, it is possible to select the mixed radiant energy of a predetermined wavelength from the radiant energy of the metal halide lamp ML and the halogen light bulb HL and transmit it downward to irradiate the automobile 9 which is the irradiated object. . It is also possible to adjust the lighting voltage of each of the lamps ML and HL to adjust the spectral energy distribution to a desired distribution.

FIG. 5 is a graph showing relative values of excess and deficiency of radiant energy for each wavelength in the spectral distribution of the metal halide lamp with respect to the spectral distribution of sunlight.

From this graph, the metal halide lamp
It can be seen that when the wavelength is about 500 nm or less, the radiant energy is relatively excessive with respect to the sunlight, and when the wavelength is about 600 nm or more, the radiant energy is relatively insufficient with respect to the sunlight.

In the present embodiment, the radiant energy of the metal halide lamp and the halogen light bulb is controlled by the dichroic filters 7M and 7H so as to eliminate the excess and deficiency of the radiant energy.

In this embodiment, the optical characteristics of the dichroic filters 7M and 7H made of the light interference film are different, and the optical film thickness (film thickness × refractive index) of each of the light interference films 7M and 7H is adjusted. , Adjust the spectral distribution characteristics.

FIG. 6 is a graph showing a spectral transmittance distribution of a dichroic filter used for a metal halide lamp, which has a characteristic of reducing radiant energy having a wavelength shorter than about 500 nm.

FIG. 7 is a graph showing the spectral transmittance distribution of the dichroic filter used for the halogen bulb.
It has a characteristic of reducing radiant energy having a wavelength shorter than about 600 nm.

FIG. 8 is a graph showing a spectral distribution of relative radiant energy obtained by combining a metal halide lamp and a dichroic filter. According to this, radiant energy similar to the radiant energy in the visible light region of sunlight is obtained from the metal halide lamp side.

FIG. 9 is a graph showing a spectral distribution of relative radiant energy obtained by combining a halogen bulb and a dichroic filter. According to this, radiant energy similar to the radiant energy in the infrared light region of sunlight is obtained from the halogen bulb side.

FIG. 10 is a graph showing the spectral distribution of the radiant energy applied to the irradiation target by mixing the spectral distributions of the two types of radiant energy of FIG. 8 and FIG. Have. Here, A is the spectral distribution of sunlight, B is the spectral distribution of the lighting device 3 of the present embodiment, C is the spectral distribution obtained by combining the metal halide lamp ML and the dichroic filter 7M, and D is the halogen bulb HL. The spectral distribution obtained by combining the dichroic filters 7H is shown.

As a result, radiant energy that approximates the spectral distribution of sunlight can be efficiently obtained from the visible light region to the infrared light region.

Then, in the spectral distribution of sunlight, the radiant energy (Pv) in the visible light region (defined as a wavelength of 400 nm or more and less than 800 nm) and the infrared light region (defined as a wavelength of 800 nm or more and 2500 nm or less). The ratio (Pv / Pi) of radiant energy (Pi) is about 0.8.
It is.

On the other hand, the ratio of the illuminating devices 4 and 4 of the present embodiment that have mixed light is about 0.75, which is within 10% of the ratio of sunlight, and is close to that of sunlight. You can realize what you have.

[0046]

According to the invention of claim 1, the radiant energy of the illuminating device is divided into a visible light region and an infrared light region, and from the metal halide lamp side, it is approximated to the spectral distribution of the visible light region of sunlight. Since the radiant energy can be obtained from the side of the halogen bulb that is close to the spectral distribution of sunlight in the infrared light region, it can be efficiently approximated to the spectral distribution of sunlight from the visible light region to the infrared light region. Radiant energy can be obtained.

According to the second aspect of the present invention, the spectral distribution control means of the halogen light bulb and the spectral distribution control means of the metal halide lamp can be separately adjusted to obtain radiant energy close to the spectral distribution of sunlight.

According to the third aspect of the present invention, in order to approximate the spectral energy distribution of sunlight, it is possible to select an appropriate proper wavelength range for each lamp, and by using them in combination, the spectral energy distribution of sunlight is Can be easily obtained.

Infrared light region of sunlight (wavelength 800n
It is specified by m or more and 2500 nm or less. ) Radiant energy in the visible light region (wavelength 400nm or more 800nm
Specify less than. ) Of the radiant energy
The ratio of the radiant energy in the visible light region to the radiant energy in the infrared light region emitted from the lighting device is ± 10.
Can be within%.

In the invention of claim 4, the metal halide lamp and the halogen bulb are arranged vertically and horizontally so as to be adjacent to each other so that the numbers thereof are substantially the same, and the radiant energy in the visible light region and the infrared region emitted from each lamp side. Can be mixed almost uniformly, and the spectral distribution emitted from the mixed-light illumination device can be approximated to the spectral distribution of sunlight. In the invention of claim 5, the metal halide lamp and the halogen bulb are controlled by the electric power output from the circuit electrically connected to each lamp.

Therefore, for example, even if one lamp fails, the other lamps are turned on / off independently, and visible to the radiant energy in the infrared light region (defined as a wavelength of 800 nm to 2500 nm) in sunlight. The ratio of the radiant energy in the visible light region to the radiant energy in the infrared light region emitted from the lighting device is within ± 10% with respect to the radiant energy ratio in the light region (wavelength 400 nm or more and less than 800 nm). Can be adjusted to.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of a solar radiation device of the present invention.

FIG. 2 is a schematic diagram of a lighting device.

FIG. 3 is a partially cutaway side view of a lighting device for a metal halide lamp.

FIG. 4 is a partially cutaway side view of a lighting fixture for a halogen bulb.

FIG. 5 is a graph showing excess or deficiency of the spectral energy distribution of a metal halide lamp with respect to the spectral energy distribution of sunlight.

FIG. 6 is a graph showing a spectral transmittance distribution of a dichroic filter used for a metal halide lamp.

FIG. 7 is a graph showing a spectral transmittance distribution of a dichroic filter used for a halogen bulb.

FIG. 8 is a graph showing a spectral distribution of relative radiant energy obtained by combining a metal halide lamp and a dichroic filter.

FIG. 9 shows a spectral distribution of relative radiant energy obtained by combining a halogen bulb and a dichroic filter.

FIG. 10 is a graph showing a radiant energy distribution applied to an irradiation target by mixing the spectral distributions of the two types of radiant energy shown in FIGS. 8 and 9.

[Explanation of symbols]

1: Solar radiation device 2: Driving device 4: Lighting device 5: Lighting device for metal halide lamp 6: Lighting device for halogen bulb 7: Spectral distribution control means (dichroic filter (light interference film)) 8: Lighting circuit ML: Metal halide lamp HL : Halogen bulb

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeru Okada 4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Inside Toshiba Lighting & Technology Corporation

Claims (6)

[Claims] 1. A driving device; an illuminating device including a metal halide lamp and a halogen bulb movably configured by the driving device; an infrared light region of sunlight (wavelength 800 nm or more and 2500 nm or less. .) To the radiant energy Pi of the visible light region (specified in the wavelength range of 400 nm to less than 800 nm) Pv / Pi = 0.8, the infrared light region of the illuminating device A spectral distribution control means disposed in at least one of the metal halide lamp and the halogen light bulb, for controlling the ratio of the radiant energy in the visible light region to the radiant energy to be within ± 10%. And solar radiation device. 2. The solar radiation device according to claim 1, wherein the spectral distribution control means is provided independently for each of the metal halide lamp and the halogen light bulb. 3. The spectral distribution control means of the metal halide lamp is a reflection surface or a filter formed with an optical interference film for mainly controlling the wavelength of 500 nm or less of the radiant energy of the metal halide lamp, and the spectral distribution control means of the halogen light bulb is The solar radiation device according to claim 2, which is a reflecting surface or a filter formed with an optical interference film that mainly controls a wavelength of 600 nm or less of the radiant energy of the halogen bulb. 4. The insolation device according to claim 1, wherein a plurality of metal halide lamps and halogen light bulbs are alternately arranged adjacent to each other. 5. The solar radiation device according to claim 1, wherein the metal halide lamp and the halogen light bulb are provided with a lighting circuit for lighting each of them. 6. The insolation device according to claim 1, wherein a plurality of lighting devices are arranged in parallel, and each of them is independently movable in the vertical and horizontal directions.