JP2019129114A - Light-emitting body, light housing device, and lighting device - Google Patents

Abstract

To provide a light-emitting body emitting auxiliary light which is easy to discriminate colors in an early stage after extinction of main light and is felt bright in a condition where dark adaptation advances: and to provide a light housing device and a lighting device.SOLUTION: A lighting device 101 includes: a main light-emitting part 110 emitting main light; and an auxiliary light-emitting part 125 as an auxiliary light which is emitted after the main light-emitting part 110 is turned off and in which a period including both of short-wavelength light and long-wavelength light whose wavelength is longer than that of the short-wavelength light is present. The long-wavelength light is extinct prior to the short-wavelength light.SELECTED DRAWING: Figure 7

Description

  The present disclosure relates to a light emitter including a light emitting unit that emits light by supply of power. The present disclosure also relates to a lighting exterior device to which a light emitter is attached. The present disclosure also relates to a lighting device including a light emitter and a lighting exterior device.

  Conventionally, as a luminous material, there are some which are indicated in patent documents 1. The phosphorescent material emits blue to bluish green phosphorescence and is applied to the outer surface of a light source glove, such as an LED bulb, for example. When the light emitter is composed of a light source and a light storing portion made of a phosphorescent material applied to the outer surface, the light emitter emits light even after the light source is turned off. Therefore, the light can be secured even after the light source is turned off.

Japanese Patent Laid-Open No. 9-241631

  The blue-green light has the advantage of good sensitivity in scotopic vision and twilight vision, and that people can feel bright even in dark places. However, it takes about 30 minutes to 1 hour for the human eye to adapt to the dark place, and in the situation where the dark adaptation of the eye is not sufficient, the emission of blue-green light is not very effective. In addition, since blue-green light has the property that it is difficult to distinguish the color, it is difficult to distinguish an object immediately after the light source is turned off that is likely to have a need for searching for an object, which tends to cause inconvenience.

  Therefore, an object of the present disclosure is to provide a light emitter that emits auxiliary light that is easy to determine the color early after the main light disappears, and that can be perceived as bright in a state where dark adaptation has progressed. Further, the object of the present disclosure is to provide an exterior device for illumination that facilitates color discrimination in the early stage after the main light disappears, and enables the emission of auxiliary light that can be perceived as bright in the dark adaptation state. Is to provide.

  In order to solve the above problems, a light emitter according to the present disclosure includes a main light emitting unit that emits main light, and auxiliary light that is emitted after the main light emitting unit is extinguished. And an auxiliary light emitting unit that emits auxiliary light having a period including both long wavelength light, and the long wavelength light is eliminated before the short wavelength light.

  In the present specification, a light emitter is defined as an apparatus including a light emitting unit that emits light by supply of power. The light emitter includes an LED bulb, an incandescent bulb, an LED fluorescent lamp, and a fluorescent lamp. The light emitters also include devices comprising a substrate, a short wavelength light emitter mounted on the substrate, and a long wavelength light emitter mounted on the substrate, in which case the light emitter is an integral part It may consist of two or more parts separate from each other.

  Moreover, the exterior device for illumination according to the present disclosure is a main light emitter attachment portion to which a light emitter including a main light emission portion that emits main light is attached, and auxiliary light emitted after the main light emission portion is turned off. An auxiliary light emitting unit for emitting auxiliary light having a period including both light and a long wavelength light longer in wavelength than the short wavelength light, and an auxiliary light emitter for emitting auxiliary light, the short wavelength light by power supply And at least one of the auxiliary light emitter attachment portion to which the auxiliary light emitter including the long wavelength light light emitter for emitting the long wavelength light is supplied. The light disappears before the short wavelength light.

  According to the light-emitting body, the exterior device for illumination, and the illumination device according to the present disclosure, it is easy to determine the color in the early stage after the main light disappears, and emits auxiliary light that can be felt bright in the dark adaptation state. It becomes possible.

It is a schematic cross section of the principal part of the illuminating device of 1st Embodiment. It is a figure which shows the spectral distribution of the phosphorescence which each of the luminous material for short wavelengths and the luminous material for long wavelengths emit. It is a figure which shows spectral distribution of the synthetic | combination light produced | generated by the phosphorescence which the luminous material for short wavelengths emits, and the phosphorescence which luminous material for long wavelengths superimposes immediately after extinguishing of a light source. Appearance of test colors No. 9 (red), No. 10 (yellow), No. 11 (green), No. 12 (blue) defined in JIS-Z 8726 (1990) under the light of the example FIG. It is the figure which summarized the property of each light of the light of 1st Example, the green light of the comparative example 1, the red light of the comparative example 2, and the light of the white LED of the comparative example 3. It is a figure for demonstrating the relationship between luminous efficiency and the wavelength of light. It is a schematic block diagram showing the structure of the principal part of the illuminating device of 2nd Embodiment. It is a block diagram of the part relevant to control in the lighting installation of a 2nd embodiment. It is an example of the flowchart of control of the auxiliary light emission part by the control part of the illuminating device of 2nd Embodiment. It is a figure showing the spectral distribution of the light radiate | emitted from a main light emission part, and the spectral distribution of the light radiate | emitted from an auxiliary light emission part. It is a graph corresponding to FIG. 4 in the case where the light emission part which emits light is LED. It is a graph corresponding to Drawing 5 in a case where a light emission part which emits light is LED.

  Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the attached drawings. In addition, when several embodiment, a modification, etc. are included below, it is assumed from the beginning to combine those feature parts suitably, and to construct new embodiment.

First Embodiment
FIG. 1: is a schematic cross section of the principal part of the illuminating device 1 of 1st Embodiment. Referring to FIG. 1, the lighting device 1 includes a light source 10 as a light emitter, and an exterior device for illumination (hereinafter, referred to as an exterior device) 20. The exterior device 20 includes a main body 30 and a cover 40. The light source 10 includes an incandescent bulb, an LED bulb, a fluorescent lamp, or an LED fluorescent lamp, and includes, for example, a substrate (not shown) and a light emitting element such as an LED (Light Emitting Diode) mounted on the substrate. The light source 10 is removably attached to a main light emitter attachment (not shown) of the main body 30. The light emitted from the light source 10 constitutes main light.

The main body 30 has a power supply device (not shown), a drive circuit, and a control unit (not shown). The power supply is input from a power source such as a commercial power source or a vehicle battery.
1516942056459_0
Are appropriately converted based on the specifications to generate output power, and the output voltage is supplied to the light source 10. The drive circuit is electrically connected between the power supply device and the light source 10 and has a switching unit. The switching unit is on / off controlled based on a signal from the control unit, and is configured of, for example, a transistor or the like. When the switching unit is turned on, power from the power source is supplied to the light source 10 via the power supply device, and the light emitting element is lit. On the other hand, when the switching unit is turned off, power is not supplied from the power source to the light source 10, and the light source 10 is turned off.

  The control unit is preferably configured by a microcomputer, for example. The control unit includes a central processing unit (CPU), and a storage unit such as a random access memory (RAM) and a read only memory (ROM). The CPU has a function of reading and executing a program and the like stored in advance in the storage unit. The RAM has a function of temporarily storing the read program and processing data. Further, the ROM has a function of storing in advance a control program, a predetermined threshold, and the like. The control unit can be realized by software executed by a microcomputer, but a part of the control unit may be configured by hardware.

  The cover 40 is made of, for example, a translucent material such as polycarbonate resin, and is attached to the main body 30 so as to cover the light source 10. The exterior device 20 further includes a short wavelength light storing unit 31 and a long wavelength light storing unit 32. The short wavelength luminous portion 31 and the long wavelength luminous portion 32 constitute an auxiliary light emitting portion. The short wavelength luminous portion 31 is applied to the inner surface of the cover 40 and is made of a short wavelength luminous material. Moreover, the long wavelength light storage part 32 is apply | coated to the inner surface of the cover 40, and is comprised with the long wavelength light storage material. In the example shown in FIG. 1, the short wavelength phosphorescent part 31 and the long wavelength phosphorescent part 32 are arranged on the inner surface of the cover 40, so that even if an object contacts the outer surface of the cover 40, the short wavelength phosphorescent part 31 and the long wavelength phosphorescent part 31 The phosphorescent part 32 is preferable because it is difficult to peel off. However, the short wavelength luminous portion and the long wavelength luminous portion may be disposed on the outer surface of the cover.

  The light source 10 emits visible light having an excitation wavelength capable of exciting a short wavelength luminous material and a long wavelength luminous material. The light emitted from the light source 10 may include ultraviolet light having an excitation wavelength capable of exciting a short wavelength luminous material and a long wavelength luminous material. The short wavelength phosphorescent material emits short wavelength light when excited by the light from the light source 10, and the long wavelength phosphorescent material emits long wavelength light having a longer wavelength than the short wavelength light when excited. Short wavelength light and long wavelength light are visible light. In this embodiment, the short wavelength phosphorescent material emits light having a peak from green to bluish green, and the long wavelength phosphorescent material emits light having a peak from yellow orange to red. The afterglow time of the short wavelength light emitted by the short wavelength luminous material is longer than the afterglow time of the long wavelength light emitted by the long wavelength luminous material.

  Various materials can be used as the short wavelength phosphorescent material and the long wavelength phosphorescent material. For example, sulfide phosphors such as calcium sulfide, zinc sulfide and zinc sulfide cadmium, aluminate including strontium, europium and dysprosium A phosphor or the like can be used. The short wavelength phosphorescent material and the long wavelength phosphorescent material are made of a material satisfying the above requirements among a wide variety of phosphorescent materials.

  FIG. 2 is a diagram showing a spectral distribution of phosphorescence emitted by each of the short wavelength phosphorescent material and the long wavelength phosphorescent material. Moreover, FIG. 3 is a figure which shows the spectral distribution of the synthetic | combination light produced | generated by the phosphorescence which the luminous material for short wavelengths emits, and the phosphorescence which luminous material for long wavelengths superimposes immediately after extinguishing of the light source 10. is there. As shown in FIG. 2, in the present embodiment, short wavelength light, that is, light having a peak from green to bluish green, has a wavelength at which the relative intensity reaches a peak within a range of 500 nm to 540 nm. In addition, long-wavelength light, that is, light having a peak from yellow-orange to red, has a wavelength at which the relative intensity reaches a peak in the range of 600 nm to 630 nm. Further, regarding the long wavelength light, the half-value wavelength at which the light intensity becomes 50% of the peak light intensity is such that the wavelength a on the short wavelength side is 580 nm or more. Further, as shown in FIG. 3, in the synthesized light, there is a maximum portion of the relative intensity at the wavelength where the relative intensity of the short wavelength light is the peak and the wavelength of the relative intensity of the long wavelength light is the peak. The combined light is white light with a deviation Duv from +20 to −20 from the black body locus described in JIS Z 8727: 1999. The combined light constitutes auxiliary light.

  The lighting device 1 operates as follows. Specifically, when a person inputs a signal representing turning on the switching unit to the control unit using the operation unit, the light source 10 is turned on. Then, the short wavelength phosphorescent material and the long wavelength phosphorescent material that have received the light from the light source 10 are excited by the energy from the received light. After that, when the light source unit 11 is turned off due to the light-off operation of the operation unit by a person or a power failure, the short wavelength phosphorescent material emits energy to emit green to bluish green light, and the long wavelength phosphorescent material emits energy Releases yellow-orange to red light. Immediately after the light source 10 is turned off, the lighting device 1 emits phosphorescence of the white synthetic light shown in FIG. Both the intensity of the short wavelength light emitted by the short wavelength phosphorescent material and the intensity of the long wavelength light emitted by the long wavelength phosphorescent material gradually decrease with the lapse of time after the light source 10 is turned off. However, since the afterglow time of the short wavelength light emitted from the short wavelength phosphorescent material is longer than the afterglow time of the long wavelength light emitted from the long wavelength phosphorescent material, the long wavelength light disappears first. As a result, when a certain amount of time passes after the light source 10 is turned off, the phosphorescence emitted from the lighting device 1 is only short-wavelength light, that is, light having a peak from green to blue-green.

Next, the relationship between brightness and human eye sensitivity will be described. The spectral sensitivity of the human eye varies with the brightness of the surroundings. This is because cones work in bright places and rods work in dark places. The peak of sensitivity in light is 555 nm (yellow to yellowish green) and the peak of sensitivity in dark is 507 nm (green to bluish green). With scotopic vision, brightness occurs between 0.000001 cd / m ² and color vision does not occur. On the other hand, photopic vision occurs at a luminance of 1 cd / m ² or more. In the meantime, 0.01 cd / m ² to 1 cd / m ² is dim vision, and the peak of sensitivity shifts between photopic vision and scotopic vision. In twilight vision, although not as accurate as photopic vision, colors can also be identified. Such a phenomenon is well known as the Purkinje phenomenon.

  Light adaptation is completed in 30 seconds to 1 minute, while dark adaptation takes 30 minutes to 1 hour. From this, it is seemingly effective to use light adapted to the sensitivity of twilight vision to scotopic vision, but since dark adaptation takes time, it is not meaningful immediately after extinguishing. Moreover, even if the brightness of the twilight vision level which can distinguish a color is securable, blue-green light has the property that it is difficult to distinguish a color. Therefore, under the blue-green light, the color of things placed in the space can not be discerned, and for example, the red mark that has been made to stand out looks black.

  4 shows test colors No. 9 (red), No. 10 (yellow), No. 11 (green), No. 12 (blue) defined in JIS-Z8726 (1990) under the light of the example. FIG. As shown in FIG. 4, under the white light emitted from the white LED, the red color, the yellow color, the green color and the blue color are close to red, yellow, green and blue, respectively. Recognized. In addition, under green phosphorescent light, the chromaticity of the test red color is located near the origin, and only the red gray looks dark gray, and the chromaticity of other test colors is also located near the origin For this reason, it is difficult to distinguish colors. In addition, under red phosphorescent light, all color chips shift to the red side, and the color tends to be close to red. On the other hand, under the phosphorescence of the synthesized light combining red phosphorescence and green phosphorescence, the chromaticity of the four test colors are separated, and the chromaticity of each test color corresponds to the test color at a position away from the origin Located in the area close to the color to be. Therefore, under the phosphorescence of the synthesized light in which the red phosphorescence and the green phosphorescence are synthesized, a person can easily recognize the color of each test color correctly, although not as much as white light.

  FIG. 5 is a diagram summarizing the respective light properties of the light of the first embodiment, the green light of Comparative Example 1, the red light of Comparative Example 2, and the light of the white LED of Comparative Example 3. In FIG. 5, Duv indicates the deviation from the black body locus described in JIS Z 8727: 1999. Further, the S / P ratio is a known objective index for evaluating the sense of brightness of the light source in a dimly-lit visual environment. The higher the S / P ratio, the higher the light source, and the higher the perceived brightness in a dimly lit environment. The S / P ratio is calculated by S / P ratio = Ls / Lp. Here, Ls represents the scotopic luminance and is expressed as Ls = ∫S (λ) × V ′ (λ) dλ. Further, Lp represents photopic luminance and is expressed as Lp = ∫S (λ) × V (λ) dλ. Further, S (λ) is the spectral radiation intensity of the light source, V ′ (λ) is the scotopic spectral luminous efficiency, and V (λ) is the photopic luminous efficiency.

  Considering the superiority or inferiority of the index regarding the S / P ratio on the basis of the light of the white LED of the comparative example 3, the green light of the comparative example 1 has an excellent S / P ratio and a feeling of brightness in thin vision. The color is difficult to distinguish as described above. Further, in the case of the red light of Comparative Example 2, the S / P ratio is low, the feeling of brightness in incoherent vision is inferior, and the color is difficult to distinguish as described above.

  On the other hand, in the case of the light of the first embodiment, in the period immediately after the light source 10 is turned off, the color discrimination characteristic is excellent. In addition, since only green light remains in the last period of the afterglow time, the S / P ratio is high, and the feeling of brightness when dim is excellent. The light of the first embodiment does not have a very good S / P ratio in the period immediately after the light source 10 is turned off, but considering that dark adaptation takes 30 minutes to 1 hour as described above, the light source 10 is turned off The fact that the S / P ratio is not very good in the immediately following period has almost no adverse effect. As a result, the light of the first embodiment has excellent characteristics such as excellent color discrimination characteristics in the period immediately after the light source 10 is turned off, and excellent brightness feeling in the last period of the afterglow time.

  As described above, the exterior device 20 according to the first embodiment includes the main light emitter attachment portion to which the light source 10 that emits the main light is attached. Further, the exterior device 20 is auxiliary light emitted after the light source 10 attached to the main light emitter attachment is turned off, and both short wavelength light and long wavelength light having a longer wavelength than the short wavelength light are used. A short wavelength luminous area 31 and a long wavelength luminous area 32 are provided which emit the auxiliary light having a period including. In addition, long wavelength light disappears earlier than short wavelength light.

  According to this configuration, immediately after the light source 10 is turned off, the auxiliary light emitting unit including the short wavelength light storing unit 31 and the long wavelength light storing unit 32 emits green to bluish green light and yellow to orange to red light, It is easy to identify the color of the object in the illuminated space. On the other hand, in the second half when a predetermined time has elapsed since the light source 10 is turned off and the light emission luminance of the phosphorescence decreases, the phosphorescence shifts to only green to bluish green light, so that people can feel phosphorescence brightly. Therefore, the lighting device 1 can easily determine the color in the early stage after the main light disappears, and can emit auxiliary light that can be perceived as bright in a state where dark adaptation has progressed.

  In the auxiliary light emitting unit, there are a short wavelength storage unit 31 disposed at a location where the main light from the light source 10 reaches, and a long wavelength storage unit 32 disposed at a location where the main light from the light source 10 reaches. May be included. In addition, the short wavelength light storing section 31 is formed of a short wavelength light storing material which emits light of short wavelength light, and the long wavelength light storing section 32 is formed of a long wavelength light storing material which emits light of long wavelength light. Also good. In addition, the afterglow time of the light emitted by the short wavelength luminous material may be longer than the afterglow time of the light emitted by the long wavelength luminous material.

  According to the above configuration, the illumination device 1 that emits the auxiliary light can be configured easily and inexpensively.

  Moreover, the illuminating device 1 may be provided with the cover 40 in which the short wavelength luminous material and the long wavelength luminous material were apply | coated.

  According to the above configuration, the short wavelength phosphorescent material and the long wavelength phosphorescent material can be easily applied to a wide area of the lighting device 1. Therefore, it becomes easy to make the phosphorescence which the illuminating device 1 emits reach a wide range. In this case, if the illuminating device is a straight tube illuminating device provided with a cylindrical cover, it is possible to emit phosphorescence from the entire straight tube illuminating device and reach a wide range. Can be remarkable.

  The short wavelength light may be light having a peak of light emission from blue-green to green, and the long wavelength light may be light having a peak of light emission from orange to red.

  According to the above configuration, it is easy to determine the color immediately after the light source 10 is turned off, and in particular, it is easy to find a red object. Also, in the second half when dark adaptation progresses and a predetermined time has elapsed since the light source 10 was turned off, and the emission brightness of phosphorescence decreases, blue to green light with high dark-vision sensitivity is output. Can feel the phosphorescence brightly.

  Further, the combined light of the short wavelength light and the long wavelength light is a white light with a deviation Duv from +20 to -20 from the black body locus described in JIS Z 8727: 1999 immediately after the main light emitting part is turned off. It may be.

  According to the above configuration, the visual environment immediately after the light source 10 is turned off can be a visual environment with a little discomfort.

  The long wavelength light may be light having a half wavelength on the short wavelength side of 580 nm or more.

  FIG. 6 is a diagram showing the relationship between luminous efficiency and the wavelength of light. Referring to FIG. 6, the larger the overlapping area (the area shown by oblique lines) 82 of the photopic spectral luminous efficiency shown by the solid line 80 and the scotopic spectral luminous efficiency shown by the dotted line 81 Is more likely to be stimulated, making it difficult for the human eye to cope with dark adaptation. On the other hand, according to the above configuration, the long wavelength light is light having a half-value wavelength on the short wavelength side of 580 nm or more. Therefore, the overlapping area 82 becomes a small area or does not exist. Therefore, it is possible to suppress or prevent the long wavelength light from adversely affecting the dark adaptation of the eye, since the long wavelength light from the long wavelength photoluminescent material hardly stimulates or does not stimulate the housing.

  In the first embodiment, the short wavelength light is light having a light emission peak from blue-green to green, and the long wavelength light is light having a light emission peak from orange to red. However, the short wavelength light may be light other than light having an emission peak from blue-green to green, and the long wavelength light may be light other than light having an emission peak from orange to red. . Further, the combined light of the short wavelength light and the long wavelength light is a white light with a deviation Duv from +20 to -20 from the black body locus described in JIS Z 8727: 1999 immediately after the main light emitting part is turned off. The case where However, the combined light of the short wavelength light and the long wavelength light is a white light with a deviation Duv from +20 to -20 from the black body locus described in JIS Z 8727: 1999 immediately after the main light emitting part is turned off. Not necessarily. Further, the case where the long wavelength light is light having a half wavelength on the short wavelength side of 580 nm or more has been described. However, the long wavelength light may have a wavelength whose half wavelength on the short wavelength side is smaller than 580 nm. The point is that the long wavelength light has a wavelength larger than that of the short wavelength light, and the afterglow time of the long wavelength light may be shorter than the afterglow time of the short wavelength light.

  Moreover, although the case where the phosphorescent material was excited with the light of the illuminating device 1 in which the phosphorescent material was included was described, the phosphorescent material may be excited with natural light or light from other lighting fixtures. Moreover, the case where an auxiliary light emission part was comprised by two types of luminous material, ie, the luminous material for short wavelengths, and the luminous material for long wavelengths was demonstrated. However, the auxiliary light emitting unit may be made of three or more different phosphorescent materials.

  Further, the case where the mixed luminous material containing the short wavelength luminous material and the long wavelength luminous material is applied to the cover 40 has been described. However, the mixed luminous material may be applied to the inner surface of a shade (shade) included in the exterior device, and in this case, it is preferable because the phosphorescence can be spread over a wide range after the main light emitting part is turned off. Alternatively, the mixed phosphorescent material may be applied to the inner surface or the outer surface of the emergency light, the guide light, or to the light reflection surface of the downlight, or the like. Alternatively, the mixed phosphorescent material may be applied to a filter or cover containing a wavelength conversion material for obtaining light of desired color rendering properties or light colors when the light source is turned on.

  Alternatively, the mixed phosphorescent material may be applied to a light source, such as an LED bulb, an incandescent bulb, an LED fluorescent light, or a fluorescent light. Specifically, the light source includes a main light emitting portion such as an LED or a filament and a light transmitting glove (cover) covering the main light emitting portion, and the mixed luminous material comprises at least one of the inner surface and the outer surface of the glove (cover). It may be applied to one side to constitute the auxiliary light emitting unit. And a light-emitting body may be equipped with a light source and an auxiliary light emission part. In such a light emitter, the short wavelength light may be light having a peak of light emission from blue-green to green, and the long wavelength light may be light having a peak of light emission from orange to red Good. In such a light emitter, the combined light of short wavelength light and long wavelength light is white light with a deviation Duv from +20 to -20 from the black body locus described in JIS Z 8727: 1999. May be. In such a light emitter, the long wavelength light may be light having a half wavelength on the short wavelength side of 580 nm or more. Alternatively, the mixed phosphorescent material may be applied to a portion other than the glove (cover) in the light source. The light emitters are removably attached to the armoring device and can be sold alone. Therefore, when these light emitters are configured, the same effect as the corresponding modification when the mixed luminous material is applied to the cover 40 of the exterior device 20 can be obtained simply by replacing the light emitters in the existing lighting device. It can be realized, and a remarkable effect can be obtained.

Second Embodiment
In the first embodiment, the auxiliary light emitting unit is configured by applying the mixed luminous material to the light source and the exterior device main body. However, it goes without saying that the same function and effect can be obtained even when the auxiliary light emitting portion is constituted by a light emitting portion which emits light by electric power instead of being constituted by a light storing portion which emits phosphorescence by excitation. Hereinafter, the case where the auxiliary light emitting unit includes a short wavelength light emitting unit that emits short wavelength light by power supply and a long wavelength light emitting unit that emits long wavelength light having a longer wavelength than the short wavelength light by power supply Do. In the second embodiment, the description of the same effects as those of the first embodiment will be omitted.

  FIG. 7 is a schematic configuration diagram showing the configuration of the main part of the illumination device 101 of the second embodiment. As shown in FIG. 7, the lighting device 101 includes a main light emitting unit 110, an auxiliary light emitting unit 125, a secondary battery 145 composed of a lithium ion battery, a livestock battery, and the like, and a control unit 170. And a short wavelength light emitting unit 131 and a long wavelength light emitting unit 132. The main light emitting unit 110 is included in the light emitter, and the short wavelength light emitting unit 131 and the long wavelength light emitting unit 132 are included in the auxiliary light emitter. The illumination device 101 includes a light emitter and an exterior device, and the exterior device includes a secondary battery 145, a main light emitter attachment portion to which the light emitter is attached, an auxiliary light emitter attachment portion to which the auxiliary light emitter is attached, and a control portion. included.

  The main light emitting unit 110 is configured by, for example, a white LED having a deviation Duv from +20 to −20 from a black body locus described in JIS Z 8727: 1999. Further, for example, the short wavelength light emitting unit 131 is configured by a green LED having a peak wavelength of 515 nm, and the long wavelength light emitting unit 132 is configured by a red LED having a peak wavelength of 635 nm. However, the main light emitting unit, the short wavelength light emitting unit, and the long wavelength light emitting unit may be anything other than those, provided that the short wavelength light emitting unit emits light having a shorter wavelength than the long wavelength light emitting unit. Light may be emitted.

Input from commercial power sources or power sources such as batteries
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Is converted by a power supply device (not shown), and the converted output voltage is input to the main light emitting unit 110 via the drive circuit of the main light emitting unit 110. The input voltage from the power source is converted by the power supply device, and the converted output voltage is input to the secondary battery 145 via the charging circuit of the secondary battery 145, and the secondary battery 145 is charged. . The input voltage to the drive circuit of the main light emitting unit 110 may be the same as the input voltage of the charging circuit, or may be different from the input voltage of the charging circuit. Further, the output portion of the secondary battery 145 is electrically connected to the short wavelength light emitting portion 131 through the driving circuit of the short wavelength light emitting portion 131 and through the driving circuit of the long wavelength light emitting portion 132. It is electrically connected to the long wavelength light emitting unit 132.

  FIG. 8 is a block diagram of a portion related to control in the lighting apparatus 101. As shown in FIG. With reference to FIG. 8, the control unit 170 has the same configuration as that of the first embodiment and includes a storage unit 171. In addition, the control unit 170 has a timer 172 and can measure time. The control unit 170 receives a signal indicating lighting or extinguishing of the main light emitting unit 110 from an operation unit, for example, a remote controller or a switch cord. Further, the control unit 170 controls the switch unit 175 of the main light emission unit drive circuit, the switch unit 176 of the short wavelength light emission unit drive circuit, and the switch unit 177 of the long wavelength light emission unit drive circuit based on the signal from the operation unit. The on / off control of the switch unit 178 of the circuit for charging the next battery is performed.

  When the switch unit 175 is turned on, power is supplied to the main light emitting unit 110 and the main light emitting unit 110 emits light. On the other hand, when the switch unit 175 is turned off, the power supply to the main light emitting unit 110 is cut off, and the main light emitting unit 110 is turned off. When the switch unit 176 is turned on, power is supplied from the secondary battery 145 to the short wavelength light emitting unit 131, and the short wavelength light emitting unit 131 emits light. On the other hand, when the switch unit 176 is turned off, the power supply from the secondary battery 145 to the short wavelength light emitting unit 131 is cut off, and the short wavelength light emitting unit 131 is turned off. Also, when the switch unit 177 is turned on, power is supplied from the secondary battery 145 to the long wavelength light emitting unit 132, and the long wavelength light emitting unit 132 emits light. On the other hand, when the switch unit 177 is turned off, the power supply from the secondary battery 145 to the long wavelength light emitting unit 132 is cut off, and the long wavelength light emitting unit 132 is turned off. Also, when the switch unit 178 is turned on, power is supplied to the secondary battery 145, and the secondary battery 145 is charged. On the other hand, when the switch unit 178 is turned on, power supply to the secondary battery 145 is cut off. In a state where the main light emitting unit 110 is lit, the control unit 170 controls the switch unit 175 and the switch unit 178 to be turned on, while controlling the switch unit 176 and the switch unit 177 to be turned off. As a result, in a state where the main light emitting unit 110 is lit, the secondary battery 145 is charged, and the short wavelength light emitting unit 131 and the long wavelength light emitting unit 132 are not lit.

  Next, an example of control of the auxiliary light emitting unit 125 by the control unit 170 will be described using the flowchart shown in FIG. Referring to FIG. 9, when control unit 170 receives a signal indicating turning off of main light emitting unit 110 from operation unit 174, control of auxiliary light emitting unit 125 is started. Then, in step S1, the control unit 170 turns off the switch unit 175 of the main light emission unit drive circuit, turns on the switch units 176 and 177 of the short wavelength and long wavelength light emission unit drive circuit, and charges the secondary battery. The switch unit 178 is turned off. As a result, the main light emitting unit 110 is turned off, the secondary battery 145 discharges power to the short wavelength and long wavelength light emitting units 131 and 132, and the short wavelength and long wavelength light emitting units 131 and 132 are turned on.

  The solid line shown in FIG. 10 is the spectral distribution of the light emitted from the auxiliary light emitting unit 125 immediately after the main light emitting unit 110 is turned off. As shown in FIG. 10, this light has a spectral distribution in which the 580 nm component is substantially zero. This light is preferably adjusted to white light whose deviation Duv from the black body locus described in JIS Z 8727: 1999 is +20 to −20, but may be adjusted to other light. .

  FIG. 11 is a graph corresponding to FIG. 4 in the case where the light emitting unit that emits light is an LED. In the second embodiment, white light is emitted from the auxiliary light emitting unit 125 immediately after the main light emitting unit 110 is turned off. Therefore, as shown in FIG. 11, it becomes easy for a person to recognize green, yellow, red and blue, and it becomes easy to identify things. When step S1 is completed, the process proceeds to step S2, where the control unit 170 determines, based on the timer 172, whether or not a predetermined time has elapsed since the control of step S1. If a negative determination is made in step S2, step S2 and subsequent steps are executed again.

  On the other hand, when an affirmative determination is made in step S2, the process proceeds to step S3, and the control unit 170 maintains the on control of the switch unit 176 of the short wavelength light emission unit drive circuit, while the switch unit of the long wavelength light emission unit drive circuit The off control of 177 is executed. As a result, the long wavelength light emitting unit 132 is turned off, while the light emission of the short wavelength light emitting unit 131 is maintained. It is preferable that the predetermined time be set to a time required for the human eye to adapt to the dark place, specifically, about 30 minutes to 1 hour. With this setting, the illuminating device 101 can easily determine the color in the initial stage after the main light disappears, and can emit auxiliary light that can be felt bright in a state where dark adaptation has progressed.

  When step S3 ends, the process proceeds to step S4. In step S <b> 4, the control unit 170 determines whether a signal indicating driving of the main light emitting unit 110 is received from the operation unit 174. If a negative determination is made in step S4, step S4 and subsequent steps are executed. On the other hand, when an affirmative determination is made in step S4, the control unit 170 turns off control of the switch unit 176 of the short wavelength light emission unit drive circuit, on control of the switch unit 175 of the main light emission unit drive circuit, and The on control of the switch unit 178 is executed, and the control is ended.

  After the step S3 is completed, the power stored in the secondary battery 145 gradually decreases with the discharge, and eventually the power is not supplied to the short wavelength light emitting unit 131, and the short wavelength light emitting unit 131 is turned off. When the control unit 170 receives a signal indicating the driving of the main light emitting unit 110 without passing a long time after the control in step S3, the main light emitting unit 110 emits light before the short wavelength light emitting unit 131 is turned off. On the other hand, when the control unit 170 receives a signal indicating the driving of the main light emitting unit 110 after a long time after the control in step S3, the main light emitting unit 110 emits light after the short wavelength light emitting unit 131 is turned off.

  FIG. 12 is a graph corresponding to FIG. 5 in the case where the light emitting unit that emits light is an LED. As shown in FIG. 12, the light of the second example is also excellent in color discrimination characteristics in the period immediately after the light source 10 is turned off, and in the last period of the afterglow time, similarly to the light of the first example. Excellent brightness.

  The present disclosure is not limited to the above-described embodiment and the modifications thereof, and various improvements and modifications can be made within the scope of the matters described in the claims of the present application and the equivalents thereof.

  For example, in the case where the lighting device receives power from a commercial power supply, when the control unit can not receive power from the commercial power supply due to a power failure, the control unit receives power from a secondary battery, as shown in FIG. May be executed. In this case, since white light is emitted in the initial period after a power failure, it is easy for a person to clearly recognize the color and to easily find a flashlight, a candle and the like.

  Further, in the example illustrated in FIG. 9, after the control of step S3, the control unit 170 does not perform the extinguishing control of the short wavelength light emitting unit 131 until the control unit 170 receives a signal indicating driving of the main light emitting unit 110. Explained the case. However, the control unit may perform turn-off control of the short wavelength light emitting unit 131 when a predetermined time elapses after the end of the control of step S3. Alternatively, the exterior device may have an SOC specifying unit that specifies the SOC (State Of Charge; remaining capacity) of the secondary battery. When the control unit determines that the SOC of the secondary battery has become equal to or less than a predetermined remaining capacity, such as half of full charge, based on the signal from the SOC specifying unit after the control of step S3 is completed, the short wavelength You may make it perform light extinction control of the light emission part 131. FIG.

  Even when the auxiliary light emitting unit includes a short wavelength light emitting unit that emits light by power supply and a long wavelength light emitting unit that emits light by power supply, the short wavelength light has a peak of light emission from blue-green to green. The light is preferable, and the long wavelength light is preferably light having a peak of light emission from orange to red. The long wavelength light emitted from the long wavelength light emitting portion is also preferably light having a half wavelength on the short wavelength side of 580 nm or more.

  Moreover, an illuminating device is provided with the short wavelength light storage part and the long wavelength light storage part, and may be attached to the inside of a vehicle. And a control part may perform control which makes a main light emission part light-emit, when a door is closed, while making a main light emission part light-emit when a door of a vehicle is opened.

  In addition, the lighting apparatus includes a main light emitting unit that emits main light, a short wavelength light storing unit, a long wavelength light storing unit, a short wavelength light emitting unit that emits short wavelength light by power supply, and long wavelength light by power supply. You may provide a long wavelength light emission part. In addition, the exterior device may include a short wavelength light storing unit, a long wavelength light storing unit, and an auxiliary light emitter attaching unit. The auxiliary light emitter mounting portion may be attached with an auxiliary light emitter including a short wavelength light emitting portion that emits short wavelength light by power supply and a long wavelength light emitting portion that emits long wavelength light by power supply. . Also in this case, the auxiliary light emitter may consist of one integral light emitter. Alternatively, the auxiliary light emitter may include a first light emitter including a short wavelength light emitter and a second light emitter configured separately from the first light emitter and including a long wavelength light emitter.

  Finally, the technical significance of the illumination device of the present disclosure will be described. The auxiliary light after the main light emitting part is turned off, and in the auxiliary light having a period including both the short wavelength light and the long wavelength light longer than the short wavelength light, the afterglow time of both lights is changed The configuration is not an easily conceived configuration. Specifically, in the illumination, when the emitted light fluctuates with time, the user may feel discomfort. Therefore, such light fluctuations are naturally avoided, and the afterglow times of both lights are naturally adjusted to the same time. However, even if the emitted light fluctuates with time, if the wavelength of the emitted light fluctuates with time to a short wavelength side like the auxiliary light of the present disclosure, it does not adversely affect the user. Furthermore, not only there is no adverse effect on the user, but also the user can derive a remarkable effect that it is easy to determine the color early after the loss of the main light, and it feels bright with dark adaptation progressed It is possible to derive another remarkable function and effect.

  DESCRIPTION OF SYMBOLS 1, 101 illumination apparatus, 10 light sources, 20 exterior devices, 31 short wavelength luminous area, 32 long wavelength luminous area, 40 cover, 110 main light emission area, 125 auxiliary light emission area, 131 short wavelength light emission area, 132 long wavelength light emission Part, 145 secondary battery, 170 control part, a half wavelength half wave length of long wavelength light.

Claims (15)

A main light emitting unit that emits a main light;
Auxiliary light emitting unit that emits auxiliary light that is emitted after the main light emitting unit is turned off and includes a period including both short wavelength light and long wavelength light having a longer wavelength than the short wavelength light; and , And
The luminous body in which the long wavelength light disappears before the short wavelength light. A cover that surrounds the main light emitting portion so as to transmit the main light;
The auxiliary light emitting unit is applied to the cover and is composed of a short wavelength phosphorescent material that emits the light of the short wavelength light, and the light of the long wavelength light is applied to the cover. Includes a long wavelength phosphorescent part composed of a long wavelength phosphorescent material that emits light,
The light-emitting body according to claim 1, wherein an afterglow time of the light emitted by the short-wavelength luminous material is longer than an afterglow time of light emitted by the long-wavelength luminous material.   The light emitter according to claim 1 or 2, wherein the short wavelength light is light having a peak of light emission from blue-green to green, and the long wavelength light is light having a peak of light emission from orange to red.   The period in which the combined light of the short wavelength light and the long wavelength light is white light with a deviation Duv from +20 to -20 from the black body locus described in JIS Z 8727: 1999. The light emitter according to any one of 1 to 3.   The light emitter according to any one of claims 1 to 4, wherein the long wavelength light is light having a half wavelength on the short wavelength side of 580 nm or more. A main light emitter attachment portion to which a light emitter including a main light emission portion that emits a main light is attached;
Auxiliary light emitting unit that emits the auxiliary light that is emitted after the main light emitting unit is turned off and includes a period including both short wavelength light and long wavelength light having a longer wavelength than the short wavelength light, And an auxiliary light emitter for emitting the auxiliary light, the light emitter including a short wavelength light emitting section for emitting the short wavelength light by power supply, and a long wavelength light emitting section for emitting the long wavelength light by power supply. An auxiliary light emitter, and at least one of the auxiliary light emitter attachment portions attached thereto;
The exterior device for lighting in which the long wavelength light disappears earlier than the short wavelength light. The auxiliary light emitting unit;
In the auxiliary light emitting portion, there is provided a short wavelength light storing portion which is disposed at a position where the main light reaches and which is made of a short wavelength phosphorescent material that emits light of the short wavelength light; And a long-wavelength luminous portion including a long-wavelength luminous material that is disposed and emits the long-wavelength light,
The exterior device for illumination according to claim 6, wherein an afterglow time of light emitted by the short wavelength luminous material is longer than an afterglow time of light emitted by the long wavelength luminous material.   The exterior device for illumination according to claim 7, wherein the short wavelength phosphorescent material and the long wavelength phosphorescent material comprise a coated shade.   The exterior device for illumination according to claim 7, wherein the short wavelength phosphorescent material and the long wavelength phosphorescent material have a coated cover. Mounted inside the vehicle,
10. The control unit according to claim 7, further comprising a control unit that controls to turn off the main light emitting unit when the door of the vehicle is opened, while causing the main light emitting unit to emit light when the door is closed. Lighting exterior device. The auxiliary light emitter attachment portion;
A control unit that performs control to make the period for supplying power to the short wavelength light emitting unit longer than the period for supplying power to the long wavelength light emitting unit after the main light emitting unit is turned off;
An illumination exterior device according to claim 6 or 7, comprising:   12. The light emitting device according to any one of claims 6 to 11, wherein the short wavelength light is light having a peak of light emission from blue-green to green, and the long wavelength light is light having a peak of light emission from orange to red. The exterior device for illumination as described.   The period in which the combined light of the short wavelength light and the long wavelength light is white light with a deviation Duv from +20 to -20 from the black body locus described in JIS Z 8727: 1999. The exterior packaging device for illumination according to any one of 6 to 12.   The exterior device for illumination according to any one of claims 6 to 13, wherein the long wavelength light is light having a half wavelength on the short wavelength side of 580 nm or more.   An illumination device comprising at least one of the light emitter according to any one of claims 1 to 5 and the exterior lighting device according to any one of claims 6 to 14.