JP2008107260A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system for surely warning a worker working in the vicinity of the lighting system emitting invisible rays that the lighting system is emitting the invisible rays, and allowing the worker to determine which lighting system is dangerous since it is emitting invisible rays even in cases where a plurality of lighting systems exist. <P>SOLUTION: This lighting system 1 equipped with an LED 11 emitting invisible rays includes a warning device 12 for working in conjunction with the LED 11 to give a warning to surroundings that invisible rays are being emitted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an illumination device that emits invisible light such as infrared rays or ultraviolet rays.

  2. Description of the Related Art Conventionally, in the field of image processing, means for generating an image by irradiating light for illuminating an object to be photographed from an illumination device and receiving light reflected on the object to be photographed has been widely used.

  In particular, when the object to be photographed is a metal, there is a well-known technique that utilizes the property that some metals reflect ultraviolet rays well and others do not reflect much. That is, by irradiating ultraviolet rays from the illuminating device and receiving the reflected ultraviolet rays, it is possible to cause a difference in density according to the type of metal on the image.

  However, it is well known that ultraviolet rays have a shorter wavelength than visible rays and have various effects when irradiated on the human body. In particular, when the ultraviolet rays are directly viewed, there is a risk of damaging the eyes such as photokeratotis, photoconjunctivitis, and cataract.

  Even if ultraviolet rays are irradiated from the illumination device, it is difficult to understand that the ultraviolet rays are being irradiated because they are invisible. For this reason, the conventional illumination device that irradiates ultraviolet rays may cause serious damage to the human body due to careless approach to the device during irradiation.

In consideration of the danger of ultraviolet rays, Patent Document 1 includes warning means for warning that ultraviolet irradiation means is operating outside the treatment room when irradiating ultraviolet rays into the treatment room for skin treatment. Discloses an apparatus for avoiding the danger of ultraviolet radiation.
JP 2004-65330 A

  By the way, when photographing an image, it is necessary to adjust the position and angle of the lighting device, and it is necessary to set the photographing object at an appropriate position with respect to the lighting device. Then, in the case of irradiating ultraviolet rays from the lighting device, the worker who is most exposed to the danger of ultraviolet rays is an operator who actually works close to the lighting device. Moreover, it is also an actual worker that there is a risk of inadvertently approaching the illumination device that is being irradiated with ultraviolet rays. In contrast to Patent Document 1, this worker corresponds to the user who receives the skin treatment of Patent Document 1. However, in Patent Document 1, since the warning device is installed only outside the room, there is a problem that the warning effect cannot be obtained for the user who should be able to convey the most danger.

  Further, when illuminating a subject to be photographed by the illumination device, the number of illumination devices is not limited to one. Two or more illumination devices for irradiating ultraviolet rays may be used to irradiate the object to be photographed. In some cases, an illumination device for irradiating ultraviolet rays and an illumination device for irradiating ordinary visible light may be used in combination. This is the same in Patent Document 1 in that the first ultraviolet ray generating means and the second ultraviolet ray generating means are used in combination. However, Patent Document 1 only describes that a warning device is installed outside the room, and it is not known which ultraviolet ray generating means is operating. Even if you prepare the same number of warning devices as the number of UV generators and know which UV generators are working, you are not familiar with the location of the UV generators in the room. Since it is not known where the ultraviolet rays are radiated, it cannot be said that sufficient danger can be avoided.

  The present invention has been made to solve the above-described conventional problems, and the purpose of the present invention is to reliably warn an operator working in the vicinity of a lighting device that an invisible light beam is being irradiated. Another object of the present invention is to provide an illuminating device capable of determining which illuminating device is irradiating invisible light and is dangerous even when there are a plurality of illuminating devices.

  In order to achieve the above object, a first invention according to the present invention (the invention according to claim 1) is an illuminating device having a light source for irradiating invisible light in a housing, which operates in conjunction with the light source, Is provided with a warning device that warns that invisible light is being irradiated, and the warning device is arranged in a housing together with a light source. According to the present invention, it is possible to reliably warn an operator working near the lighting device that the invisible light is being irradiated, and which lighting device is invisible even when there are a plurality of lighting devices. It becomes possible to judge whether it is dangerous because it is being irradiated with light.

  The second invention (the invention according to claim 2) is characterized in that, in the illumination device of the first invention, the warning device is a light source for irradiating visible light. According to the present invention, it is possible to easily determine whether or not the illumination device is operating by confirming the presence or absence of visible light.

  A third invention (invention according to claim 3) is characterized in that, in the illumination device of the first invention, the warning device is a buzzer that emits a warning sound. According to the present invention, it is possible to easily determine whether or not the lighting device is operating by checking the presence or absence of a warning sound.

  According to a fourth invention (the invention according to claim 4), in the illumination device according to the first to third inventions, the warning device is electrically arranged in series or in parallel on the same electronic circuit as the light source. It is what. According to such a configuration, since the warning device can be arranged on the same electronic circuit as the light source, there is no need to prepare a power source separately for the warning device, and a space-saving and low-cost lighting device can be provided. Can be provided.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a lighting device according to the present invention. In FIG. 1, reference numeral 1 denotes a lighting device, and 11 denotes an LED, which irradiates ultraviolet rays. Usually, a plurality of LEDs 11 are arranged side by side to increase the light intensity of ultraviolet rays, but are omitted here and only one is described. Although 12 is also an LED, it emits visible light and serves as a warning device. Unlike the LED 11, the LED 12 may be a single LED. Reference numeral 13 denotes a cylindrical housing that houses the LEDs 11 and 12 therein. Reference numeral 2 denotes a power supply device, which includes a switch 21 for turning on / off the operation of the lighting device 1. Reference numeral 3 denotes an object to be photographed, which is irradiated with light by the illumination device 1.

  When the switch 21 is OFF, the LEDs 11 and 12 are not energized and do not emit light. Here, when the switch 21 is switched from OFF to ON, power is supplied to the LEDs 11 and 12 from the power supply device 2 to emit ultraviolet rays and visible rays, respectively.

  A person who performs an operation of irradiating the object 3 with light using the lighting device 1 (hereinafter referred to as a worker) confirms whether or not visible light is irradiated before using the lighting device 1 with his hand. To do. If visible light is visible, it can be determined that the switch 21 has already been turned on and that ultraviolet rays are being emitted from the illumination device 1, so that the ultraviolet rays emitted from the illumination device 1 are not exposed or directly viewed. It is possible to be careful to handle with care. Moreover, since electric power can be supplied from the same power supply device 2, it has the advantage that it is not necessary to prepare separate power supply devices for the LEDs 11 and 12.

  An operator installs the lighting device 1 at a position and an angle at which the photographing object 3 can be appropriately irradiated with ultraviolet rays. Here, a stand or the like (not shown) may be used to fix the lighting device 1.

  After the lighting device 1 is properly installed, the switch 21 is turned on to irradiate the photographing object 3 with ultraviolet rays and simultaneously irradiate visible light from the LEDs 12. Thereby, the illuminating device 1 is irradiating with an ultraviolet-ray, and it turns out that it is dangerous.

  FIG. 2 is a diagram showing a second embodiment of the lighting device according to the present invention. Here, a plurality of LEDs 11 that irradiate ultraviolet rays are arranged in series, and the LEDs are electrically connected in series. Further, a plurality of them are arranged in parallel, and electrically arranged in parallel with each other and arranged on the substrate 14, thereby forming an LED array. Further, at least one of the LEDs constituting the LED array is constituted by an LED 12 that emits visible light. When the switch 21 is turned on and ultraviolet rays are irradiated, the illumination device 1 can be formed so that visible light is simultaneously irradiated. Moreover, space saving can be achieved by arranging these LEDs on the same substrate. More preferably, at least one visible light LED is connected in each series connection of the ultraviolet LEDs. In the unlikely event that one of the visible light LEDs fails and does not light up, the other visible light LEDs can issue a warning.

  FIG. 3 is a cross-sectional view showing a state in which the substrate 14 on which the LED array is arranged is housed in the housing 13. Here, the housing 13 is formed in a box shape using a back plate 131 and a side plate 132 formed so as to sandwich the substrate 14, screws 133, and a window portion 134. The window 134 is preferably an opening so as not to block light emitted from the LED 11 and the LED 12 or is made of a highly transparent material. Further, although not shown in particular about the supply of power to the substrate 14, it may be connected to a power supply device provided outside the illumination device 1 as in the first embodiment, or a power supply is provided inside the housing 13. You may do it.

  FIG. 4 schematically shows a state in which the same object 3 is irradiated with ultraviolet rays using the same illumination devices 1A to 1D as the illumination device 1 shown in the second embodiment. The arrows in the figure indicate the directions of light emitted from the respective lighting devices 1. In such a case, for example, when visible light is emitted from the lighting device 1A and the lighting device 1B, ultraviolet rays are irradiated from these lighting devices, and ultraviolet rays are irradiated from the other lighting devices 1C and 1D. It can be easily judged that there is not.

  In addition, the lighting devices 1A to 1D are not all the same, for example, the lighting devices 1A and 1C irradiate ultraviolet rays, and the lighting devices 1B and 1D are ordinary light sources that emit only visible light. As in the case described above, if visible light is irradiated from the lighting devices 1A and 1B, it is possible to call attention to an operator approaching these lighting devices.

  In this case, the LED 12 provided in the lighting devices 1A and 1C is made to emit a color different from the LED used in the lighting devices 1B and 1D, or a lighting device having a different light intensity is used. More preferably, it is possible to determine whether or not the material is irradiated with ultraviolet rays.

  Moreover, in FIG. 2, although the structure which provides single LED12 with respect to several LED11 is illustrated, you may change the number of these LED as needed. For example, by providing a large number of LEDs 12, the light intensity of visible light may be increased to attract attention.

  The above is an example in which an LED that emits visible light is used as a warning device, but the warning device is not limited to such a configuration, and a buzzer that emits a warning sound may be attached instead of an LED that emits visible light. An LED that emits visible light and a buzzer that emits a warning sound may be used in combination. That is, what alerts an operator may be used as a warning device.

  As described above, according to the lighting device according to the present invention, it is possible to reliably warn an operator who is working near the lighting device that irradiation with invisible light is being performed, and a plurality of lighting devices are provided. Even if it exists, it can be determined which lighting device is in danger of irradiating invisible light.

It is a figure which shows one Embodiment of the illuminating device which concerns on this invention. It is a circuit diagram which shows the electric circuit of the illuminating device in 2nd Example of this invention. It is sectional drawing which shows the state which accommodated the electric circuit shown in FIG. 2 in the housing | casing. It is the schematic diagram which showed the state which irradiates an ultraviolet-ray with respect to the same imaging | photography object using a several illuminating device.

Explanation of symbols

1 Illumination device 11 LED which irradiates ultraviolet rays
12 LEDs that emit visible light
13 Housing 131 Back plate 132 Side plate 133 Screw 134 Plate material 14 Substrate 15 LED and resistance element connection lead 16 Resistance element 2 Power supply device 21 Switch 3 Shooting object

Claims (4)

A lighting device provided with a light source that emits invisible light in a housing,
A warning device that operates in conjunction with the light source and warns that the surrounding is being irradiated with invisible light,
The warning device is arranged in the casing together with the light source.
The lighting device according to claim 1.
The warning device is a light source that emits visible light.
The lighting device according to claim 1.
The warning device is a buzzer that emits a warning sound.
In the illuminating device of Claims 1 thru | or 3,
The illuminating device, wherein the warning device is electrically arranged in series or in parallel on the same electronic circuit as the light source.