WO2016075870A1 - Led filament type light bulb - Google Patents

Led filament type light bulb Download PDF

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Publication number
WO2016075870A1
WO2016075870A1 PCT/JP2015/005254 JP2015005254W WO2016075870A1 WO 2016075870 A1 WO2016075870 A1 WO 2016075870A1 JP 2015005254 W JP2015005254 W JP 2015005254W WO 2016075870 A1 WO2016075870 A1 WO 2016075870A1
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WO
WIPO (PCT)
Prior art keywords
led
led filament
light bulb
type light
light
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PCT/JP2015/005254
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French (fr)
Japanese (ja)
Inventor
実 川原
山田　雅人
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信越半導体株式会社
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Publication date
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Publication of WO2016075870A1 publication Critical patent/WO2016075870A1/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G7/00—Botany in general
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/05—Fruit crops, e.g. strawberries, tomatoes or cucumbers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/15—Leaf crops, e.g. lettuce or spinach 
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/60—Flowers; Ornamental plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources

Definitions

  • the present invention relates to an LED filament light bulb.
  • Plants such as florets and fruits are generally cultivated using electric lighting. Specifically, artificial light is used to lengthen the day length, or artificial light is turned on at night to make the night time feel short.
  • incandescent light bulbs have generally been used (Patent Document 1). However, incandescent bulbs have a problem of low power consumption, with high power consumption of around 60 W. Incandescent bulbs are no longer in production. Light bulb-type LEDs (light-emitting diodes) are also commercially available, and power consumption is around 6W, but they are white light bulbs and contain many wavelengths that are not used for lighting, and the effect of lighting is poor. It was an issue. Further, it is necessary to take measures against heat emitted from the LED, and a heat sink is usually provided. For this reason, it became a problem that it became expensive and it became heavy with a heat sink.
  • LED filament light bulbs have been proposed as LED lamps that can replace incandescent light bulbs.
  • This filament-type LED bulb has an LED filament (filament-type LED) that can be energized by mounting an LED element on a base (for example, a transparent base).
  • a base for example, a transparent base.
  • the conventional LED filament type light bulb is used as an alternative to an incandescent light bulb as lighting, it emits white light, that is, light containing a lot of wavelengths that are not used for plant illumination.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a light bulb with low power consumption and excellent plant illumination effect.
  • an LED filament having an LED element array in which a plurality of LED elements are connected in series and a substrate on which the LED element array is mounted, a globe covering the LED filament, and the globe
  • An LED filament type light bulb having an attached base part,
  • the LED filament light bulb is for plant lighting,
  • the plurality of LED elements are monochromatic LED elements,
  • an LED filament type light bulb characterized in that the LED filament emits monochromatic light.
  • LED filament type light bulb emits monochromatic light, it has an excellent lighting effect. Moreover, since it is a light bulb provided with an LED filament, light extraction efficiency is high. Therefore, an LED bulb with high illuminance can be obtained even when power consumption is small.
  • the substrate is transparent with respect to the monochromatic emission wavelength of the LED element.
  • Such an LED filament type light bulb can further improve the light extraction efficiency.
  • the LED filament does not have a phosphor.
  • Such an LED filament light bulb can extract monochromatic light more efficiently.
  • the LED filament type light bulb has a plurality of the LED filaments, and the plurality of LED filaments emit the same monochromatic light or emit different monochromatic lights.
  • the LED filament type light bulb in which a plurality of LED filaments emit the same monochromatic light it is suitable as a light bulb when cultivating a plant that requires one kind of monochromatic light. Moreover, if it is an LED filament type light bulb in which a several LED filament light-emits different monochromatic light, it is suitable as a light bulb at the time of growing the plant which requires two or more types of monochromatic light.
  • the base has an AC / DC conversion circuit.
  • the energized current can be converted from alternating current to direct current suitable for the LED.
  • the light emission range of the LED filament bulb is 270 ° or more.
  • Such an LED filament type light bulb will be a brighter light bulb.
  • a reflective film is further attached to the lower part of the LED filament bulb.
  • an umbrella having a reflection function is further attached to the lower part of the LED filament bulb.
  • Such an LED filament type light bulb can reflect the light emitted to the lower part of the light bulb toward the upper part of the light bulb, so that the plant to be cultivated can be efficiently irradiated with monochromatic light.
  • the light extraction range of the LED filament bulb is 180 ° or less.
  • the irradiation direction of monochromatic light can be limited only to the direction in which the plant to be cultivated exists.
  • the monochromatic LED element includes a red LED element having an emission wavelength between 620 and 700 nm, an infrared LED element having an emission wavelength between 700 and 1000 nm, and an ultraviolet having an emission wavelength between 190 and 400 nm. Any of a color LED element, a blue LED element having an emission wavelength between 400 and 490 nm, a green LED element having an emission wavelength between 490 and 570 nm, or a yellow to orange LED element having an emission wavelength between 570 and 620 nm It is preferable that
  • Such an LED filament type light bulb can emit monochromatic light according to the plant to be cultivated.
  • the LED filament light bulb of the present invention emits monochromatic light, it has an excellent lighting effect. Moreover, since it is a light bulb provided with an LED filament, light extraction efficiency is high. Therefore, an LED bulb with high illuminance can be obtained even when power consumption is small. Further, since the LED filament is mounted on the light bulb, it is not necessary to provide a heavy heat radiation member such as a heat sink. Thereby, it can be set as a light and highly efficient LED bulb. Moreover, according to the effect on a plant, the LED element of various wavelengths can be selected and mounted. Thereby, it can be set as the light bulb excellent by the illumination effect.
  • an LED filament having an LED element array in which a plurality of LED elements are connected in series and a substrate on which the LED element array is mounted, a globe that covers the LED filament, and a base portion that is attached to the globe
  • An LED filament type light bulb that is a filament type light bulb, wherein the LED filament type light bulb is for plant lighting, the plurality of LED elements are single color LED elements, and the LED filament emits single color light.
  • FIG. 1 is a diagram showing an example of an LED filament bulb of the present invention.
  • an LED filament bulb 10 of the present invention includes an LED filament 11, a globe 12 covering the LED filament 11, and a base portion 13 attached to the globe 12.
  • FIG. 2 is a diagram showing an example of the structure of the LED filament.
  • the LED filament 11 in the present invention includes an LED element array in which a plurality of LED elements 14 are connected in series, and a substrate 15 on which the LED element array 21 is mounted.
  • the plurality of LED elements 14 can be connected in series using, for example, an electric wire 16.
  • the arrow shown above and below the LED element 14 in FIG. 2 shows an example of the direction of the light emitted by the LED element 14.
  • the LED filament light bulb 10 of the present invention is a single-color LED element in which the plurality of LED elements 14 are the same.
  • the LED filament 11 emits the same monochromatic light as the LED element.
  • the LED filament type light bulb of the present invention can emit monochromatic light having a wavelength necessary for plant cultivation, and has an excellent illumination effect.
  • the monochromatic LED element in the present invention refers to an LED element that can emit light having a half-value width of an emission wavelength of 15 nm or less, for example.
  • the monochromatic light in the present invention is, for example, light having a half-value width of the emission wavelength of 15 nm or less. Therefore, for example, the light emission wavelength region of the LED filament is broadened using a wavelength converting phosphor or the like.
  • the variation in peak emission wavelength (wavelength at which emission intensity is maximum) of the plurality of LED elements 14 mounted on one LED filament 11 is 10 nm or less.
  • Each LED element 14 preferably has only a single peak in the emission spectrum.
  • the number of LED elements 14 mounted on one LED filament 11 can be 5 to 30, for example.
  • the LED filament type light bulb 10 is for plant lighting. As described above, since the LED filament of the present invention emits monochromatic light, it has an excellent illumination effect. Therefore, it can be suitably used for plant lighting.
  • the structure inside the globe 12 of the LED filament bulb 10 is not particularly limited as long as it has the LED filament 11. It can be set as the structure similar to a well-known LED filament type light bulb. For example, as shown in FIG. 1, a structure in which a rod-shaped member 17 installed on the base portion 13 and the LED filament 11 are connected by an electric wire 18 can be exemplified. As a result, power can be supplied from the base 13 to the LED filament 11.
  • the material constituting the globe 12 is not particularly limited.
  • die part 13 is not specifically limited, For example, a metal material can be mentioned.
  • the material which comprises the rod-shaped member 17 is not specifically limited, For example, a metal material can be mentioned.
  • the shapes of the globe 12, the base portion 13, and the rod-shaped member 17 are not particularly limited, and may be the same shape as that used for a known LED filament type light bulb.
  • the substrate 15 is preferably transparent to the monochromatic emission wavelength of the LED element 14. With such an LED filament type light bulb, the light emission range of the light bulb described later can be made wider and the light extraction efficiency can be further improved as compared with a light bulb type LED using a conventional opaque substrate. it can.
  • substrate 15 is not specifically limited, Glass, crystalline material, resin, etc. can be mentioned as what is transparent with respect to a monochromatic emission wavelength.
  • the LED filament 11 does not have a phosphor.
  • the emission wavelength range is broad, and white light, that is, light containing a lot of wavelengths that are not used for lighting is not emitted. Can be taken out well.
  • the LED filament type light bulb 10 has a plurality of LED filaments 11, and the plurality of LED filaments emit the same monochromatic light or emit different monochromatic lights. If it is an LED filament type light bulb in which a plurality of LED filaments emit the same monochromatic light, it is suitable as a light bulb when cultivating a plant that requires one kind of monochromatic light. Moreover, if it is an LED filament type light bulb in which a several LED filament light-emits different monochromatic light, it is suitable as a light bulb at the time of growing the plant which requires two or more types of monochromatic light. In this case, the number of LED filaments 11 can be 2 to 6, for example. FIG. 1 illustrates the case where there are four LED filaments 11. One LED filament 11 may be used.
  • the combination of LED filaments is not particularly limited.
  • the LED filament light bulb which comprises two LED filaments having only red LED elements described later and one LED filament having only blue LED elements.
  • the base part 13 has an AC / DC conversion circuit (not shown). With such an LED filament type light bulb, it is possible to convert a current to be passed from an alternating current to a direct current suitable for the LED.
  • FIG. 3 is an explanatory diagram for explaining the light emission range of the LED filament bulb.
  • the light emission range 30 of the LED filament type light bulb is 270 ° or more. If it is such an LED filament type light bulb, it becomes a brighter light bulb.
  • the means for setting the light emission range to 270 ° or more is not particularly limited. For example, by arranging the LED filament 11 as shown in FIGS. 1 and 3, the light emission range can be set to 270 ° or more.
  • the light emission range 30 is an angle range in which the light bulb can emit light in a cross section passing through a portion indicated by a broken line in FIG. 3 (a cross section passing through the central axis of the light bulb).
  • FIG. 4 is a view showing an example of the LED filament type light bulb of the present invention. As shown in FIG. 4, it is preferable that a reflective film 19 is further attached to the lower part of the LED filament type light bulb.
  • FIG. 5 is a diagram showing an example of the LED filament type light bulb of the present invention. As shown in FIG. 5, it is preferable that an umbrella 20 having a reflection function is further attached to the lower part of the LED filament bulb. If it is the LED filament type light bulb shown in FIG.4 and FIG.5, since the light discharge
  • the material which comprises the reflective film 19 is not specifically limited, For example, a metal material can be mentioned.
  • the material constituting the umbrella 20 having a reflecting function is not particularly limited, and examples thereof include a metal material.
  • FIG. 6 is an explanatory diagram for explaining the light extraction range of the LED filament bulb.
  • the light extraction range 40 of the LED filament bulb is 180 ° or less.
  • the irradiation direction of monochromatic light can be limited only to the direction in which the plant to be cultivated exists.
  • the reflection film 19 shown in FIG. 4 and the umbrella 20 having the reflection function shown in FIG. 5 the light extraction range can be 180 ° or less.
  • the light extraction range 40 is a range of light actually emitted from the light bulb in a cross section passing through a portion indicated by a broken line in FIG. 6 (cross section passing through the central axis of the light bulb).
  • the light bulb has a narrow light extraction range by reflecting light emitted downward to the upper direction, the light emitted downward is absorbed by the substrate or the like.
  • an LED bulb with high illuminance can be obtained even when power consumption is small.
  • 4 and 5 show a case where the light extraction range 40 is 180 ° or less.
  • the light extraction range 40 is changed to 180 °. It is also possible to set it to more than °.
  • the monochromatic LED element is a red LED element having an emission wavelength between 620 and 700 nm, an infrared LED element having an emission wavelength between 700 and 1000 nm, and an ultraviolet color having an emission wavelength between 190 and 400 nm.
  • These LED elements are not particularly limited as long as they have a single color having the above emission wavelength, but it is preferable that the peak emission wavelength is included in the above wavelength range.
  • red LED elements include those having a peak emission wavelength of around 660 nm.
  • the material of the red LED element include AlGaInP. If it is an LED filament type light bulb which has a red LED element, the flowering day of short-day plants, such as a chrysanthemum, can be controlled. Moreover, the photoreceptor called phytochrome in a plant can be activated and photosynthesis of a plant can be accelerated
  • infrared LED elements include those having a peak emission wavelength of around 730 nm.
  • examples of the material of the infrared LED element include AlGaAs. If it is an LED filament type light bulb which has an infrared color LED element, plant height and vitamin C content can be increased. Moreover, the plant's shade avoidance effect can be promoted.
  • Examples of ultraviolet LED elements include those having a peak emission wavelength of around 355 nm.
  • Examples of the material of the ultraviolet LED element include AlGaN (aluminum gallium nitride). If it is an LED filament type light bulb which has an ultraviolet LED element, the nutrient component of a plant can be increased and generation
  • blue LED elements include those having a peak emission wavelength of around 430 nm.
  • the material of the blue LED element include InGaN (indium gallium nitride). If it is an LED filament type light bulb which has a blue LED element, since blue LED element is cheaper than an ultraviolet LED element, generation
  • Examples of the green LED element include those having a peak emission wavelength of around 560 nm.
  • Examples of the material of the green LED element include InGaN or GaP. If it is an LED filament type light bulb having a green LED element, it is possible to grow a strain that is resistant to diseases, and to reduce the incidence of anthracnose.
  • Examples of yellow to orange LED elements include those having a peak emission wavelength of around 590 nm.
  • Examples of the material of the yellow to orange LED element include AlGaInP.
  • An LED filament type light bulb having yellow to orange LED elements is excellent in repelling harmful insects such as moths.
  • Example 1 The chrysanthemum which is a short-day plant was cultivated using the LED filament type light bulb shown in FIG. As the monochromatic LED element, a red LED element having a wavelength of 660 nm was used. The flowering day was delayed by lighting. Table 1 shows the results of Example 1.
  • Comparative Examples 1 to 3 In Comparative Example 1, incandescent bulbs were used, and in Comparative Example 2, chrysanthemums were cultivated using white LED bulbs. In Comparative Example 3, chrysanthemum was cultivated without electric lighting. Table 1 shows the results of Comparative Examples 1 to 3.
  • Example 1 As shown in Table 1, the power consumption of Example 1 was small, and the average date of seeding and the average date of flowering could be delayed. On the other hand, in Comparative Example 1 using an incandescent bulb, although the average date of flowering and the average flowering date could be delayed, the power consumption was very large. In Comparative Example 2 using a white LED bulb, the average date of flowering and the average flowering date could be delayed, but the results were inferior to those of Example 1 and Comparative Example 1 using an incandescent bulb. Further, the power consumption of Comparative Example 2 was larger than that of Example 1. In Comparative Example 3, which was non-illuminated, the average date of flowering and the average date of flowering could not be delayed.
  • Example 2 Strawberries were cultivated using the LED filament type light bulb shown in FIG.
  • the monochromatic LED element a red LED element having a wavelength of 660 nm was used. I tried to increase the yield by lighting. Table 2 shows the results of Example 2.
  • Comparative Examples 4 and 5 In Comparative Example 4, strawberries were cultivated using an incandescent bulb. In Comparative Example 5, strawberries were grown without electric lighting. Table 2 shows the results of Comparative Examples 4 and 5.
  • Example 2 As shown in Table 2, the power consumption of Example 2 was small, and the results of average stock length and strawberry yield were good. In Comparative Example 4 using an incandescent bulb, the power consumption was very large. Moreover, the strawberry yield was small compared with Example 2. In Comparative Example 5, which was non-lighted, the average strain length and strawberry yield were poor.
  • Example 3 Ultraviolet light and blue light are expected to be effective in preventing the occurrence of diseases such as powdery mildew. Accordingly, the number of powdery mildew occurrence strains for strawberries was investigated using the LED filament type light bulb of the present invention. The number of powdery mildew occurrence strains 30 days after irradiation was compared.
  • strawberries were cultivated using the LED filament type light bulb shown in FIG.
  • the monochromatic LED element an ultraviolet LED element having a peak emission wavelength of 355 nm was used. Table 3 shows the results of Example 3.
  • Example 4 Strawberry cultivation was performed under the same conditions as in Example 3 except that a blue LED element having a peak emission wavelength of 450 nm was used as the monochromatic LED element. Table 3 shows the results of Example 4.
  • Example 3 the number of powdery mildew disease-causing strains could be reduced as compared with Comparative Example 6 in which there was no illumination.
  • Example 3 irradiated with ultraviolet light
  • Example 4 the occurrence of powdery mildew could be further suppressed as compared with Example 4 irradiated with blue light.
  • Example 5 It is known that green light has the effect of growing strains that are resistant to disease.
  • strawberry cultivation was performed using the LED filament type light bulb shown in FIG.
  • a monochromatic LED element a green LED element having a peak emission wavelength of 565 nm was used.
  • Table 4 shows the results of Example 5.
  • Table 4 the average strain length and strawberry yield data of Comparative Examples 4 and 5 are also shown.
  • Example 5 had an average stock length and strawberry yield comparable to those of Comparative Example 4 using an incandescent bulb, but compared with Comparative Example 4 and Comparative Example 5 which was non-lighted. The incidence of the disease was significantly reduced.
  • Example 6 Yellow light is known to have an effect of repelling moths.
  • Night moths which are nocturnal pests, are active at night and do not act at night when they become brighter than a certain level. By applying light at night, it is possible to make night moths misunderstood as daytime, and it is possible to suppress eating plants, mating and spawning activities. It was. Therefore, a test was conducted in a chrysanthemum cultivation field.
  • chrysanthemum was cultivated using the LED filament type light bulb shown in FIG.
  • a monochromatic LED element a yellow LED element having a peak emission wavelength of 590 nm was used. This light bulb was installed at a height of 2 m and tested. The number of surveys was 100. From August to December, it was lit for 12 hours from 6:00 pm to 6:00 am, and the number of pest damage was investigated. Mainly investigated leaf damage. Table 5 shows the results of Example 6.
  • Example 6 had fewer pest damages than Comparative Example 7, which was non-lighted.
  • Example 7 It is known that plants have absorption pigments that absorb infrared light. Then, the effect of infrared light was investigated using the LED filament type light bulb of the present invention. However, since infrared light alone has little effect on growing plants, a fluorescent lamp was used as reference light, and infrared light was added to the test. The test was conducted with Komatsuna and investigated for plant height and vitamin C content.
  • Komatsuna was cultivated using the LED filament type light bulb shown in FIG. 1 as a light bulb emitting infrared light.
  • a monochromatic LED element an infrared LED element having a wavelength of 730 nm was used. Table 6 shows the results of Example 7.
  • Example 7 had the effect of increasing plant height and increasing vitamin C as compared with Comparative Example 8 in which Komatsuna was cultivated only with a fluorescent lamp.
  • the LED filament type light bulb of the present invention is a light bulb with low power consumption and excellent illumination effect.
  • the present invention is not limited to the above embodiment.
  • the above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Botany (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Forests & Forestry (AREA)
  • Ecology (AREA)
  • Cultivation Of Plants (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The present invention is an LED filament type light bulb comprising an LED filament having an LED element row from a plurality of LED elements linked in series and a base plate carrying the LED element row, a globe covering the LED filament, and a base portion attached to the globe, and characterized in that the LED filament type light bulb is for plant lighting, the plurality of LED elements are monochromatic LED elements, and the LED filament emits monochromatic light. In this manner, a light bulb with low power consumption and having excellent plant lighting effect is provided.

Description

ＬＥＤフィラメント型電球LED filament bulb
　本発明は、ＬＥＤフィラメント型電球に関する。 The present invention relates to an LED filament light bulb.
　花卉、果実などの植物を、電照を用いて栽培することが一般的に行われている。具体的には、人工光を用いて日長時間を長くしたり、夜間に人工光を点灯して夜の時間を短く感じさせたりすることが行われている。今までは、一般に白熱電球が使われてきた（特許文献１）。しかしながら、白熱電球は消費電力が６０Ｗ前後と大きく、低効率であることが問題になっていた。また白熱電球は今後の生産がなくなる方向である。また電球タイプのＬＥＤ（発光ダイオード）も市販されており、消費電力は６Ｗ前後となっているが、白色電球であり電照には使われない波長を多く含んでおり、電照の効果が乏しいことが課題となっていた。また、ＬＥＤから放出される熱への対策が必要であり、ヒートシンクが設けられているのが通常である。このため高価になることと、ヒートシンクで重くなってしまうことが問題となっていた。 植物 Plants such as florets and fruits are generally cultivated using electric lighting. Specifically, artificial light is used to lengthen the day length, or artificial light is turned on at night to make the night time feel short. Until now, incandescent light bulbs have generally been used (Patent Document 1). However, incandescent bulbs have a problem of low power consumption, with high power consumption of around 60 W. Incandescent bulbs are no longer in production. Light bulb-type LEDs (light-emitting diodes) are also commercially available, and power consumption is around 6W, but they are white light bulbs and contain many wavelengths that are not used for lighting, and the effect of lighting is poor. It was an issue. Further, it is necessary to take measures against heat emitted from the LED, and a heat sink is usually provided. For this reason, it became a problem that it became expensive and it became heavy with a heat sink.
　一方、白熱電球に代替するＬＥＤランプとして、ＬＥＤフィラメント型電球が提案されている。このフィラメントタイプのＬＥＤ電球は、基台（例えば、透明な基台）の上にＬＥＤ素子をマウントして通電できるようにしたＬＥＤフィラメント（フィラメントタイプＬＥＤ）を有するものである。しかしながら、従来のＬＥＤフィラメント型電球は照明としての白熱電球の代替用であるため、白色光、すなわち、植物の電照に使われない波長が多く含まれている光を発するものであった。 On the other hand, LED filament light bulbs have been proposed as LED lamps that can replace incandescent light bulbs. This filament-type LED bulb has an LED filament (filament-type LED) that can be energized by mounting an LED element on a base (for example, a transparent base). However, since the conventional LED filament type light bulb is used as an alternative to an incandescent light bulb as lighting, it emits white light, that is, light containing a lot of wavelengths that are not used for plant illumination.
特開平７－２２０００号公報Japanese Unexamined Patent Publication No. 7-22000
　本発明は、上記問題点に鑑みてなされたものであって、消費電力が小さく、植物の電照効果に優れた電球を提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a light bulb with low power consumption and excellent plant illumination effect.
　上記目的を達成するために、本発明では、複数のＬＥＤ素子が直列につながれたＬＥＤ素子列と該ＬＥＤ素子列を搭載する基板とを有するＬＥＤフィラメント、該ＬＥＤフィラメントを覆うグローブ、及び該グローブに取り付けられた口金部を具備するＬＥＤフィラメント型電球であって、
　前記ＬＥＤフィラメント型電球が植物電照用であり、
　前記複数のＬＥＤ素子が単色のＬＥＤ素子であり、
　前記ＬＥＤフィラメントが単色光を発光するものであることを特徴とするＬＥＤフィラメント型電球を提供する。 In order to achieve the above object, in the present invention, an LED filament having an LED element array in which a plurality of LED elements are connected in series and a substrate on which the LED element array is mounted, a globe covering the LED filament, and the globe An LED filament type light bulb having an attached base part,
The LED filament light bulb is for plant lighting,
The plurality of LED elements are monochromatic LED elements,
Provided is an LED filament type light bulb characterized in that the LED filament emits monochromatic light.
　このようなＬＥＤフィラメント型電球は単色光を発光するものであるため、電照効果に優れる。また、ＬＥＤフィラメントを具備する電球であるため、光取り出し効率が高い。従って、消費電力が小さくても照度の高いＬＥＤ電球とすることができる。 Since such an LED filament type light bulb emits monochromatic light, it has an excellent lighting effect. Moreover, since it is a light bulb provided with an LED filament, light extraction efficiency is high. Therefore, an LED bulb with high illuminance can be obtained even when power consumption is small.
　また、前記基板が、前記ＬＥＤ素子の単色の発光波長に対して透明であることが好ましい。 Further, it is preferable that the substrate is transparent with respect to the monochromatic emission wavelength of the LED element.
　このようなＬＥＤフィラメント型電球であれば、光取り出し効率をより向上させることができる。 Such an LED filament type light bulb can further improve the light extraction efficiency.
　また、前記ＬＥＤフィラメントが蛍光体を有さないものであることが好ましい。 Moreover, it is preferable that the LED filament does not have a phosphor.
　このようなＬＥＤフィラメント型電球であれば、単色光を更に効率よく取り出すことができる。 Such an LED filament light bulb can extract monochromatic light more efficiently.
　また、前記ＬＥＤフィラメント型電球が前記ＬＥＤフィラメントを複数有し、該複数のＬＥＤフィラメントが同じ単色光を発光するもの又は異なる単色光を発光するものであることが好ましい。 Moreover, it is preferable that the LED filament type light bulb has a plurality of the LED filaments, and the plurality of LED filaments emit the same monochromatic light or emit different monochromatic lights.
　複数のＬＥＤフィラメントが同じ単色光を発光するＬＥＤフィラメント型電球であれば、一種類の単色光を必要とする植物を栽培する際の電球として好適である。また、複数のＬＥＤフィラメントが異なる単色光を発光するものであるＬＥＤフィラメント型電球であれば、二種類以上の単色光を必要とする植物を栽培する際の電球として好適である。 If the LED filament type light bulb in which a plurality of LED filaments emit the same monochromatic light, it is suitable as a light bulb when cultivating a plant that requires one kind of monochromatic light. Moreover, if it is an LED filament type light bulb in which a several LED filament light-emits different monochromatic light, it is suitable as a light bulb at the time of growing the plant which requires two or more types of monochromatic light.
　また、前記口金部にＡＣ／ＤＣ変換回路を有するものであることが好ましい。 Moreover, it is preferable that the base has an AC / DC conversion circuit.
　このようなＬＥＤフィラメント型電球であれば、通電する電流を交流からＬＥＤに適した直流に変換することができる。 With such an LED filament type light bulb, the energized current can be converted from alternating current to direct current suitable for the LED.
　また、前記ＬＥＤフィラメント型電球の発光範囲が２７０°以上であることが好ましい。 Moreover, it is preferable that the light emission range of the LED filament bulb is 270 ° or more.
　このようなＬＥＤフィラメント型電球であれば、より明るい電球となる。 Such an LED filament type light bulb will be a brighter light bulb.
　また、前記ＬＥＤフィラメント型電球の下部に、更に反射フィルムが貼り付けられたものであることが好ましい。 Further, it is preferable that a reflective film is further attached to the lower part of the LED filament bulb.
　また、前記ＬＥＤフィラメント型電球の下部に、更に内部に反射機能を持った傘が取り付けられたものであることが好ましい。 Moreover, it is preferable that an umbrella having a reflection function is further attached to the lower part of the LED filament bulb.
　このようなＬＥＤフィラメント型電球であれば、電球の下部に放出された光を電球の上部方向へ反射させることができるので、栽培する植物に効率よく単色光を照射することができる。 Such an LED filament type light bulb can reflect the light emitted to the lower part of the light bulb toward the upper part of the light bulb, so that the plant to be cultivated can be efficiently irradiated with monochromatic light.
　この場合、前記ＬＥＤフィラメント型電球の光の取り出し範囲が１８０°以下であることが好ましい。 In this case, it is preferable that the light extraction range of the LED filament bulb is 180 ° or less.
　このようなＬＥＤフィラメント型電球であれば、単色光の照射方向を栽培する植物が存在する方向のみに限定することができる。 If it is such an LED filament type light bulb, the irradiation direction of monochromatic light can be limited only to the direction in which the plant to be cultivated exists.
　また、前記単色のＬＥＤ素子が、６２０～７００ｎｍの間に発光波長を持つ赤色ＬＥＤ素子、７００～１０００ｎｍの間に発光波長を持つ赤外色ＬＥＤ素子、１９０～４００ｎｍの間に発光波長を持つ紫外色ＬＥＤ素子、４００～４９０ｎｍの間に発光波長を持つ青色ＬＥＤ素子、４９０～５７０ｎｍの間に発光波長を持つ緑色ＬＥＤ素子、又は５７０～６２０ｎｍの間に発光波長を持つ黄色～橙色ＬＥＤ素子のいずれかであることが好ましい。 The monochromatic LED element includes a red LED element having an emission wavelength between 620 and 700 nm, an infrared LED element having an emission wavelength between 700 and 1000 nm, and an ultraviolet having an emission wavelength between 190 and 400 nm. Any of a color LED element, a blue LED element having an emission wavelength between 400 and 490 nm, a green LED element having an emission wavelength between 490 and 570 nm, or a yellow to orange LED element having an emission wavelength between 570 and 620 nm It is preferable that
　このようなＬＥＤフィラメント型電球であれば、栽培する植物に応じた単色光を発するものとすることができる。 Such an LED filament type light bulb can emit monochromatic light according to the plant to be cultivated.
　本発明のＬＥＤフィラメント型電球は、単色光を発光するものであるため、電照効果に優れる。また、ＬＥＤフィラメントを具備する電球であるため、光取り出し効率が高い。従って、消費電力が小さくても照度の高いＬＥＤ電球とすることができる。また、ＬＥＤフィラメントを電球に搭載したものであるため、ヒートシンク等の重量の大きい放熱部材を具備しなくてもよい。これにより、軽く高効率なＬＥＤ電球とすることができる。また、植物への効果に応じて、様々な波長のＬＥＤ素子を選択して搭載することができる。これにより、電照効果により優れた電球とすることができる。 Since the LED filament light bulb of the present invention emits monochromatic light, it has an excellent lighting effect. Moreover, since it is a light bulb provided with an LED filament, light extraction efficiency is high. Therefore, an LED bulb with high illuminance can be obtained even when power consumption is small. Further, since the LED filament is mounted on the light bulb, it is not necessary to provide a heavy heat radiation member such as a heat sink. Thereby, it can be set as a light and highly efficient LED bulb. Moreover, according to the effect on a plant, the LED element of various wavelengths can be selected and mounted. Thereby, it can be set as the light bulb excellent by the illumination effect.
本発明のＬＥＤフィラメント型電球の一例を示す図である。It is a figure which shows an example of the LED filament type light bulb of this invention. ＬＥＤフィラメントの構造の一例を示す図である。It is a figure which shows an example of the structure of a LED filament. ＬＥＤフィラメント型電球の発光範囲を説明する説明図である。It is explanatory drawing explaining the light emission range of a LED filament type light bulb. 本発明のＬＥＤフィラメント型電球の一例を示す図である。It is a figure which shows an example of the LED filament type light bulb of this invention. 本発明のＬＥＤフィラメント型電球の一例を示す図である。It is a figure which shows an example of the LED filament type light bulb of this invention. ＬＥＤフィラメント型電球の光の取り出し範囲を説明する説明図である。It is explanatory drawing explaining the extraction range of the light of an LED filament type light bulb.
　以下、本発明をより詳細に説明する。 Hereinafter, the present invention will be described in more detail.
　上記のように、消費電力が小さく、植物の電照効果に優れた電球が求められている。 As described above, there is a demand for a light bulb that consumes less power and has an excellent plant illumination effect.
　本発明者らは、上記目的を達成するために鋭意検討を行った。その結果、複数のＬＥＤ素子が直列につながれたＬＥＤ素子列と該ＬＥＤ素子列を搭載する基板とを有するＬＥＤフィラメント、該ＬＥＤフィラメントを覆うグローブ、及び該グローブに取り付けられた口金部を具備するＬＥＤフィラメント型電球であって、前記ＬＥＤフィラメント型電球が植物電照用であり、前記複数のＬＥＤ素子が単色のＬＥＤ素子であり、前記ＬＥＤフィラメントが単色光を発光するものであるＬＥＤフィラメント型電球が、上記課題を解決できることを見出し、本発明を完成させた。 The present inventors have intensively studied to achieve the above object. As a result, an LED filament having an LED element array in which a plurality of LED elements are connected in series and a substrate on which the LED element array is mounted, a globe that covers the LED filament, and a base portion that is attached to the globe An LED filament type light bulb that is a filament type light bulb, wherein the LED filament type light bulb is for plant lighting, the plurality of LED elements are single color LED elements, and the LED filament emits single color light. The inventors have found that the above problems can be solved, and have completed the present invention.
　以下、本発明の実施の形態について図面を参照して具体的に説明するが、本発明はこれらに限定されるものではない。 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings, but the present invention is not limited to these.
　図１は、本発明のＬＥＤフィラメント型電球の一例を示す図である。図１に示すように本発明のＬＥＤフィラメント型電球１０は、ＬＥＤフィラメント１１、該ＬＥＤフィラメント１１を覆うグローブ１２、及び該グローブ１２に取り付けられた口金部１３を具備する。 FIG. 1 is a diagram showing an example of an LED filament bulb of the present invention. As shown in FIG. 1, an LED filament bulb 10 of the present invention includes an LED filament 11, a globe 12 covering the LED filament 11, and a base portion 13 attached to the globe 12.
　図２は、ＬＥＤフィラメントの構造の一例を示す図である。図２に示すように本発明におけるＬＥＤフィラメント１１は、複数のＬＥＤ素子１４が直列につながれたＬＥＤ素子列と該ＬＥＤ素子列２１を搭載する基板１５とを有する。複数のＬＥＤ素子１４は、例えば、電線１６を用いて直列に接続することができる。なお、図２におけるＬＥＤ素子１４の上下に示される矢印は、ＬＥＤ素子１４が発する光の方向の一例を示すものである。 FIG. 2 is a diagram showing an example of the structure of the LED filament. As shown in FIG. 2, the LED filament 11 in the present invention includes an LED element array in which a plurality of LED elements 14 are connected in series, and a substrate 15 on which the LED element array 21 is mounted. The plurality of LED elements 14 can be connected in series using, for example, an electric wire 16. In addition, the arrow shown above and below the LED element 14 in FIG. 2 shows an example of the direction of the light emitted by the LED element 14.
　本発明のＬＥＤフィラメント型電球１０は、複数のＬＥＤ素子１４が同じ単色のＬＥＤ素子である。また、ＬＥＤフィラメント１１がＬＥＤ素子と同じ単色光を発光するものである。このように、本発明のＬＥＤフィラメント型電球は、植物の栽培に必要な波長の単色光を発光することができるものであり、電照効果に優れるものである。また、ＬＥＤフィラメントを具備する電球であるため、光取り出し効率が高い。従って、消費電力が小さくても照度の高いＬＥＤ電球とすることができる。ここで、本発明における単色のＬＥＤ素子とは、例えば、発光波長の半値幅が１５ｎｍ以下の光を発することができるＬＥＤ素子のことである。本発明における単色光とは、例えば、発光波長の半値幅が１５ｎｍ以下の光のことである。従って、例えば波長変換用の蛍光体等を用いて、ＬＥＤフィラメントの発光波長域がブロードにされたようなものは含まれない。 The LED filament light bulb 10 of the present invention is a single-color LED element in which the plurality of LED elements 14 are the same. The LED filament 11 emits the same monochromatic light as the LED element. Thus, the LED filament type light bulb of the present invention can emit monochromatic light having a wavelength necessary for plant cultivation, and has an excellent illumination effect. Moreover, since it is a light bulb provided with an LED filament, light extraction efficiency is high. Therefore, an LED bulb with high illuminance can be obtained even when power consumption is small. Here, the monochromatic LED element in the present invention refers to an LED element that can emit light having a half-value width of an emission wavelength of 15 nm or less, for example. The monochromatic light in the present invention is, for example, light having a half-value width of the emission wavelength of 15 nm or less. Therefore, for example, the light emission wavelength region of the LED filament is broadened using a wavelength converting phosphor or the like.
　また、本発明では、一つのＬＥＤフィラメント１１に搭載される複数のＬＥＤ素子１４のピーク発光波長（発光強度が最大となる波長）のバラツキが１０ｎｍ以下であることが望ましい。また、各ＬＥＤ素子１４は、発光スペクトル中に単一のピークのみを有するものであることが好ましい。一つのＬＥＤフィラメント１１に搭載されるＬＥＤ素子１４の数は、例えば、５～３０個とすることができる。 In the present invention, it is desirable that the variation in peak emission wavelength (wavelength at which emission intensity is maximum) of the plurality of LED elements 14 mounted on one LED filament 11 is 10 nm or less. Each LED element 14 preferably has only a single peak in the emission spectrum. The number of LED elements 14 mounted on one LED filament 11 can be 5 to 30, for example.
　本発明では、ＬＥＤフィラメント型電球１０が植物電照用である。上記のように本発明のＬＥＤフィラメントは単色光を発光するものであるため、電照効果に優れる。従って、植物電照用として好適に用いることができる。 In the present invention, the LED filament type light bulb 10 is for plant lighting. As described above, since the LED filament of the present invention emits monochromatic light, it has an excellent illumination effect. Therefore, it can be suitably used for plant lighting.
　ＬＥＤフィラメント型電球１０のグローブ１２内部の構造については、ＬＥＤフィラメント１１を有するものであれば、特に限定されない。公知のＬＥＤフィラメント型電球と同様の構造とすることができる。例えば、図１に示すように、口金部１３上に設置された棒状部材１７とＬＥＤフィラメント１１とを電線１８で接続した構造を挙げることができる。これにより口金部１３からＬＥＤフィラメント１１へ給電することができる。 The structure inside the globe 12 of the LED filament bulb 10 is not particularly limited as long as it has the LED filament 11. It can be set as the structure similar to a well-known LED filament type light bulb. For example, as shown in FIG. 1, a structure in which a rod-shaped member 17 installed on the base portion 13 and the LED filament 11 are connected by an electric wire 18 can be exemplified. As a result, power can be supplied from the base 13 to the LED filament 11.
　グローブ１２を構成する材料は特に限定されない。例えば、ガラス、樹脂等の透光性材料を挙げることができる。また、口金部１３を構成する材料も特に限定されず、例えば、金属材料を挙げることができる。また、棒状部材１７を構成する材料も特に限定されず、例えば、金属材料を挙げることができる。 The material constituting the globe 12 is not particularly limited. For example, translucent materials, such as glass and resin, can be mentioned. Moreover, the material which comprises the nozzle | cap | die part 13 is not specifically limited, For example, a metal material can be mentioned. Moreover, the material which comprises the rod-shaped member 17 is not specifically limited, For example, a metal material can be mentioned.
　グローブ１２、口金部１３及び棒状部材１７の形状も特に限定されず、公知のＬＥＤフィラメント型電球に用いられるものと同様の形状とすることができる。 The shapes of the globe 12, the base portion 13, and the rod-shaped member 17 are not particularly limited, and may be the same shape as that used for a known LED filament type light bulb.
　また、基板１５が、ＬＥＤ素子１４の単色の発光波長に対して透明であることが好ましい。このようなＬＥＤフィラメント型電球であれば、従来の不透明な基板を用いた電球タイプのＬＥＤと比べて、後述する電球の発光範囲をより広くすることができ、光取り出し効率をより向上させることができる。なお、基板１５を構成する材料は特に限定されないが、単色の発光波長に対して透明であるものとしては、ガラス、結晶質材料、樹脂等を挙げることができる。 The substrate 15 is preferably transparent to the monochromatic emission wavelength of the LED element 14. With such an LED filament type light bulb, the light emission range of the light bulb described later can be made wider and the light extraction efficiency can be further improved as compared with a light bulb type LED using a conventional opaque substrate. it can. In addition, although the material which comprises the board | substrate 15 is not specifically limited, Glass, crystalline material, resin, etc. can be mentioned as what is transparent with respect to a monochromatic emission wavelength.
　また、ＬＥＤフィラメント１１が蛍光体を有さないものであることが好ましい。このようなＬＥＤフィラメント型電球であれば、発光波長域がブロードになって、白色光、すなわち、電照に使われない波長が多く含まれている光を発することがなく、単色光を更に効率よく取り出すことができる。 Moreover, it is preferable that the LED filament 11 does not have a phosphor. With such an LED filament type light bulb, the emission wavelength range is broad, and white light, that is, light containing a lot of wavelengths that are not used for lighting is not emitted. Can be taken out well.
　また、ＬＥＤフィラメント型電球１０がＬＥＤフィラメント１１を複数有し、該複数のＬＥＤフィラメントが同じ単色光を発光するもの又は異なる単色光を発光するものであることが好ましい。複数のＬＥＤフィラメントが同じ単色光を発光するＬＥＤフィラメント型電球であれば、一種類の単色光を必要とする植物を栽培する際の電球として好適である。また、複数のＬＥＤフィラメントが異なる単色光を発光するものであるＬＥＤフィラメント型電球であれば、二種類以上の単色光を必要とする植物を栽培する際の電球として好適である。この場合、ＬＥＤフィラメント１１の数は、例えば、２～６個とすることができる。図１ではＬＥＤフィラメント１１が４個の場合を例示している。なお、ＬＥＤフィラメント１１は１個でもよい。 Moreover, it is preferable that the LED filament type light bulb 10 has a plurality of LED filaments 11, and the plurality of LED filaments emit the same monochromatic light or emit different monochromatic lights. If it is an LED filament type light bulb in which a plurality of LED filaments emit the same monochromatic light, it is suitable as a light bulb when cultivating a plant that requires one kind of monochromatic light. Moreover, if it is an LED filament type light bulb in which a several LED filament light-emits different monochromatic light, it is suitable as a light bulb at the time of growing the plant which requires two or more types of monochromatic light. In this case, the number of LED filaments 11 can be 2 to 6, for example. FIG. 1 illustrates the case where there are four LED filaments 11. One LED filament 11 may be used.
　複数のＬＥＤフィラメントが異なる単色光を発光するものであるＬＥＤフィラメント型電球である場合、ＬＥＤフィラメントの組み合わせについては特に限定されない。例えば、後述の赤色ＬＥＤ素子のみを有するＬＥＤフィラメントを２個、青色ＬＥＤ素子のみを有するＬＥＤフィラメントを１個具備するＬＥＤフィラメント型電球とすることができる。 In the case of an LED filament type light bulb in which a plurality of LED filaments emit different monochromatic lights, the combination of LED filaments is not particularly limited. For example, it can be set as the LED filament light bulb which comprises two LED filaments having only red LED elements described later and one LED filament having only blue LED elements.
　また、口金部１３にＡＣ／ＤＣ変換回路（不図示）を有するものであることが好ましい。このようなＬＥＤフィラメント型電球であれば、通電する電流を交流からＬＥＤに適した直流に変換することができる。 Moreover, it is preferable that the base part 13 has an AC / DC conversion circuit (not shown). With such an LED filament type light bulb, it is possible to convert a current to be passed from an alternating current to a direct current suitable for the LED.
　図３は、ＬＥＤフィラメント型電球の発光範囲を説明する説明図である。図３に示すように、ＬＥＤフィラメント型電球の発光範囲３０が２７０°以上であることが好ましい。このようなＬＥＤフィラメント型電球であれば、より明るい電球となる。発光範囲を２７０°以上とする手段は特に限定されない。例えば、ＬＥＤフィラメント１１を図１及び図３に示すように配置することで発光範囲を２７０°以上とすることができる。なお、発光範囲３０は、図３の破線で示す部分を通る断面（電球の中心軸を通る断面）において、電球が光を放出することができる角度範囲のことである。 FIG. 3 is an explanatory diagram for explaining the light emission range of the LED filament bulb. As shown in FIG. 3, it is preferable that the light emission range 30 of the LED filament type light bulb is 270 ° or more. If it is such an LED filament type light bulb, it becomes a brighter light bulb. The means for setting the light emission range to 270 ° or more is not particularly limited. For example, by arranging the LED filament 11 as shown in FIGS. 1 and 3, the light emission range can be set to 270 ° or more. In addition, the light emission range 30 is an angle range in which the light bulb can emit light in a cross section passing through a portion indicated by a broken line in FIG. 3 (a cross section passing through the central axis of the light bulb).
　図４は、本発明のＬＥＤフィラメント型電球の一例を示す図である。図４に示すように、ＬＥＤフィラメント型電球の下部に、更に反射フィルム１９が貼り付けられたものであることが好ましい。図５は、本発明のＬＥＤフィラメント型電球の一例を示す図である。図５に示すように、ＬＥＤフィラメント型電球の下部に、更に内部に反射機能を持った傘２０が取り付けられたものであることが好ましい。図４及び図５に示すＬＥＤフィラメント型電球であれば、電球の下部に放出された光を電球の上部方向へ反射させることができるので、栽培する植物に効率よく単色光を照射することができる。 FIG. 4 is a view showing an example of the LED filament type light bulb of the present invention. As shown in FIG. 4, it is preferable that a reflective film 19 is further attached to the lower part of the LED filament type light bulb. FIG. 5 is a diagram showing an example of the LED filament type light bulb of the present invention. As shown in FIG. 5, it is preferable that an umbrella 20 having a reflection function is further attached to the lower part of the LED filament bulb. If it is the LED filament type light bulb shown in FIG.4 and FIG.5, since the light discharge | released to the lower part of a light bulb can be reflected in the upper direction of a light bulb, the plant to grow can be efficiently irradiated with monochromatic light .
　反射フィルム１９を構成する材料は特に限定されず、例えば、金属材料を挙げることができる。反射機能を持った傘２０を構成する材料も特に限定されず、例えば、金属材料を挙げることができる。 The material which comprises the reflective film 19 is not specifically limited, For example, a metal material can be mentioned. The material constituting the umbrella 20 having a reflecting function is not particularly limited, and examples thereof include a metal material.
　図６は、ＬＥＤフィラメント型電球の光の取り出し範囲を説明する説明図である。図６に示すように、ＬＥＤフィラメント型電球の光の取り出し範囲４０が１８０°以下であることが好ましい。このようなＬＥＤフィラメント型電球であれば、単色光の照射方向を栽培する植物が存在する方向のみに限定することができる。例えば、図４に示す反射フィルム１９や図５に示す反射機能を持った傘２０を配置することで光の取り出し範囲を１８０°以下とすることができる。なお、光の取り出し範囲４０は、図６の破線で示す部分を通る断面（電球の中心軸を通る断面）において、実際に電球から放出される光の範囲のことである。 FIG. 6 is an explanatory diagram for explaining the light extraction range of the LED filament bulb. As shown in FIG. 6, it is preferable that the light extraction range 40 of the LED filament bulb is 180 ° or less. With such an LED filament type light bulb, the irradiation direction of monochromatic light can be limited only to the direction in which the plant to be cultivated exists. For example, by arranging the reflection film 19 shown in FIG. 4 and the umbrella 20 having the reflection function shown in FIG. 5, the light extraction range can be 180 ° or less. The light extraction range 40 is a range of light actually emitted from the light bulb in a cross section passing through a portion indicated by a broken line in FIG. 6 (cross section passing through the central axis of the light bulb).
　図４及び図５に示すように、下部に放出された光を上部方向へ反射させることで光の取り出し範囲のみを狭くした電球であれば、下部に放出された光が基板等に吸収されて発光範囲及び光の取り出し範囲が狭くなる従来の電球タイプのＬＥＤに比べて、消費電力が小さくても照度の高いＬＥＤ電球とすることができる。なお、図４及び図５では、光の取り出し範囲４０が１８０°以下である場合を示しているが、反射機能を持った傘２０等の形状を変更することで、光の取り出し範囲４０を１８０°以上とすることも可能である。 As shown in FIGS. 4 and 5, if the light bulb has a narrow light extraction range by reflecting light emitted downward to the upper direction, the light emitted downward is absorbed by the substrate or the like. Compared with a conventional light bulb type LED in which the light emission range and the light extraction range are narrowed, an LED bulb with high illuminance can be obtained even when power consumption is small. 4 and 5 show a case where the light extraction range 40 is 180 ° or less. However, by changing the shape of the umbrella 20 or the like having a reflection function, the light extraction range 40 is changed to 180 °. It is also possible to set it to more than °.
　また、単色のＬＥＤ素子が、６２０～７００ｎｍの間に発光波長を持つ赤色ＬＥＤ素子、７００～１０００ｎｍの間に発光波長を持つ赤外色ＬＥＤ素子、１９０～４００ｎｍの間に発光波長を持つ紫外色ＬＥＤ素子、４００～４９０ｎｍの間に発光波長を持つ青色ＬＥＤ素子、４９０～５７０ｎｍの間に発光波長を持つ緑色ＬＥＤ素子、又は５７０～６２０ｎｍの間に発光波長を持つ黄色～橙色ＬＥＤ素子のいずれかであることが好ましい。このようなＬＥＤフィラメント型電球であれば、栽培する植物に応じた単色光を発するものとすることができる。これらのＬＥＤ素子は、上記の発光波長を持つ単色のものであれば特に限定されないが、ピーク発光波長が上記の波長の範囲に含まれているものであることが好ましい。 The monochromatic LED element is a red LED element having an emission wavelength between 620 and 700 nm, an infrared LED element having an emission wavelength between 700 and 1000 nm, and an ultraviolet color having an emission wavelength between 190 and 400 nm. LED element, blue LED element having an emission wavelength between 400 and 490 nm, green LED element having an emission wavelength between 490 and 570 nm, or yellow to orange LED element having an emission wavelength between 570 and 620 nm It is preferable that If it is such an LED filament type light bulb, it can emit monochromatic light according to the plant to grow. These LED elements are not particularly limited as long as they have a single color having the above emission wavelength, but it is preferable that the peak emission wavelength is included in the above wavelength range.
　赤色ＬＥＤ素子としては、例えば、ピーク発光波長が６６０ｎｍ付近のものを挙げることができる。赤色ＬＥＤ素子の材料としてはＡｌＧａＩｎＰを挙げることができる。赤色ＬＥＤ素子を有するＬＥＤフィラメント型電球であれば、菊等の短日植物の開花日をコントロールすることができる。また、植物中のフィトクロムという光受容体を活性化させ、植物の光合成を促進させることができる。 Examples of red LED elements include those having a peak emission wavelength of around 660 nm. Examples of the material of the red LED element include AlGaInP. If it is an LED filament type light bulb which has a red LED element, the flowering day of short-day plants, such as a chrysanthemum, can be controlled. Moreover, the photoreceptor called phytochrome in a plant can be activated and photosynthesis of a plant can be accelerated | stimulated.
　赤外色ＬＥＤ素子としては、例えば、ピーク発光波長が７３０ｎｍ付近のものを挙げることができる。赤外色ＬＥＤ素子の材料としてはＡｌＧａＡｓを挙げることができる。赤外色ＬＥＤ素子を有するＬＥＤフィラメント型電球であれば、草丈、ビタミンＣ含有量を増加させることができる。また、植物の避陰効果を促進させることができる。 Examples of infrared LED elements include those having a peak emission wavelength of around 730 nm. Examples of the material of the infrared LED element include AlGaAs. If it is an LED filament type light bulb which has an infrared color LED element, plant height and vitamin C content can be increased. Moreover, the plant's shade avoidance effect can be promoted.
　紫外色ＬＥＤ素子としては、例えば、ピーク発光波長が３５５ｎｍ付近のものを挙げることができる。紫外色ＬＥＤ素子の材料としてはＡｌＧａＮ（アルミニウムガリウムナイトライド）を挙げることができる。紫外色ＬＥＤ素子を有するＬＥＤフィラメント型電球であれば、植物の栄養成分を増やすことができ、うどんこ病等の病害の発生を防ぐことができる。 Examples of ultraviolet LED elements include those having a peak emission wavelength of around 355 nm. Examples of the material of the ultraviolet LED element include AlGaN (aluminum gallium nitride). If it is an LED filament type light bulb which has an ultraviolet LED element, the nutrient component of a plant can be increased and generation | occurrence | production of diseases, such as powdery mildew, can be prevented.
　青色ＬＥＤ素子としては、例えば、ピーク発光波長が４３０ｎｍ付近のものを挙げることができる。青色ＬＥＤ素子の材料としてはＩｎＧａＮ（インジウムガリウムナイトライド）を挙げることができる。青色ＬＥＤ素子を有するＬＥＤフィラメント型電球であれば、青色ＬＥＤ素子が紫外色ＬＥＤ素子よりも安価であるため、より低コストでうどんこ病等の病害の発生を防ぐことができる。 Examples of blue LED elements include those having a peak emission wavelength of around 430 nm. Examples of the material of the blue LED element include InGaN (indium gallium nitride). If it is an LED filament type light bulb which has a blue LED element, since blue LED element is cheaper than an ultraviolet LED element, generation | occurrence | production of diseases, such as powdery mildew, can be prevented at lower cost.
　緑色ＬＥＤ素子としては、例えば、ピーク発光波長が５６０ｎｍ付近のものを挙げることができる。緑色ＬＥＤ素子の材料としてはＩｎＧａＮまたはＧａＰを挙げることができる。緑色ＬＥＤ素子を有するＬＥＤフィラメント型電球であれば、病気に強い株を育てることができ、炭そ病の発生率を低減させることができる。 Examples of the green LED element include those having a peak emission wavelength of around 560 nm. Examples of the material of the green LED element include InGaN or GaP. If it is an LED filament type light bulb having a green LED element, it is possible to grow a strain that is resistant to diseases, and to reduce the incidence of anthracnose.
　黄色～橙色ＬＥＤ素子としては、例えば、ピーク発光波長が５９０ｎｍ付近のものを挙げることができる。黄色～橙色ＬＥＤ素子の材料としてはＡｌＧａＩｎＰを挙げることができる。黄色～橙色ＬＥＤ素子を有するＬＥＤフィラメント型電球であれば、ガ等の害虫を忌避させる効果に優れるものとなる。 Examples of yellow to orange LED elements include those having a peak emission wavelength of around 590 nm. Examples of the material of the yellow to orange LED element include AlGaInP. An LED filament type light bulb having yellow to orange LED elements is excellent in repelling harmful insects such as moths.
　以下、実施例及び比較例を示して本発明をより具体的に説明するが、本発明はこの実施例に限定されるものではない。 Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these examples.
（実施例１）
　図１に示すＬＥＤフィラメント型電球を用いて短日植物である菊の栽培を行った。単色のＬＥＤ素子として、波長６６０ｎｍの赤色ＬＥＤ素子を用いた。電照することで開花日を遅らせるようにした。表１に実施例１の結果を示す。 (Example 1)
The chrysanthemum which is a short-day plant was cultivated using the LED filament type light bulb shown in FIG. As the monochromatic LED element, a red LED element having a wavelength of 660 nm was used. The flowering day was delayed by lighting. Table 1 shows the results of Example 1.
（比較例１～３）
　比較例１は白熱電球、比較例２は白色ＬＥＤ電球を用いて菊の栽培を行った。比較例３は無電照で菊の栽培を行った。表１に比較例１～３の結果を示す。 (Comparative Examples 1 to 3)
In Comparative Example 1, incandescent bulbs were used, and in Comparative Example 2, chrysanthemums were cultivated using white LED bulbs. In Comparative Example 3, chrysanthemum was cultivated without electric lighting. Table 1 shows the results of Comparative Examples 1 to 3.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示すように、実施例１は消費電力が小さく、また、平均出蕾日及び平均採花日を遅らせることができた。一方、白熱電球を用いた比較例１では、平均出蕾日及び平均採花日を遅らせることができたものの、消費電力が非常に大きかった。白色ＬＥＤ電球を用いた比較例２では、平均出蕾日及び平均採花日を遅らせることができたものの、その結果は実施例１や白熱電球を用いた比較例１に劣るものであった。また、比較例２の消費電力は実施例１に比べて大きかった。無電照である比較例３では、平均出蕾日及び平均採花日を遅らせることができなかった。 As shown in Table 1, the power consumption of Example 1 was small, and the average date of seeding and the average date of flowering could be delayed. On the other hand, in Comparative Example 1 using an incandescent bulb, although the average date of flowering and the average flowering date could be delayed, the power consumption was very large. In Comparative Example 2 using a white LED bulb, the average date of flowering and the average flowering date could be delayed, but the results were inferior to those of Example 1 and Comparative Example 1 using an incandescent bulb. Further, the power consumption of Comparative Example 2 was larger than that of Example 1. In Comparative Example 3, which was non-illuminated, the average date of flowering and the average date of flowering could not be delayed.
（実施例２）
　図１に示すＬＥＤフィラメント型電球を用いてイチゴの栽培を行った。単色のＬＥＤ素子として、波長６６０ｎｍの赤色ＬＥＤ素子を用いた。電照することで収穫量の増加を試みた。表２に実施例２の結果を示す。 (Example 2)
Strawberries were cultivated using the LED filament type light bulb shown in FIG. As the monochromatic LED element, a red LED element having a wavelength of 660 nm was used. I tried to increase the yield by lighting. Table 2 shows the results of Example 2.
（比較例４、５）
　比較例４は白熱電球を用いてイチゴの栽培を行った。比較例５は無電照でイチゴの栽培を行った。表２に比較例４、５の結果を示す。 (Comparative Examples 4 and 5)
In Comparative Example 4, strawberries were cultivated using an incandescent bulb. In Comparative Example 5, strawberries were grown without electric lighting. Table 2 shows the results of Comparative Examples 4 and 5.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　表２に示すように、実施例２は消費電力が小さく、平均株長及びイチゴ収量の結果が良好であった。白熱電球を用いた比較例４では消費電力が非常に大きかった。また、イチゴ収量は実施例２に比べて少なかった。無電照である比較例５では、平均株長及びイチゴ収量の結果が悪かった。 As shown in Table 2, the power consumption of Example 2 was small, and the results of average stock length and strawberry yield were good. In Comparative Example 4 using an incandescent bulb, the power consumption was very large. Moreover, the strawberry yield was small compared with Example 2. In Comparative Example 5, which was non-lighted, the average strain length and strawberry yield were poor.
（実施例３）
　紫外光や青色光には、うどんこ病等の病害の発生を防ぐ効果が期待されている。そこで、本発明のＬＥＤフィラメント型電球を用いてイチゴに対するうどんこ病発生株数の調査を行った。照射後３０日でのうどんこ病発生株数の比較を行った。 (Example 3)
Ultraviolet light and blue light are expected to be effective in preventing the occurrence of diseases such as powdery mildew. Accordingly, the number of powdery mildew occurrence strains for strawberries was investigated using the LED filament type light bulb of the present invention. The number of powdery mildew occurrence strains 30 days after irradiation was compared.
　具体的には、図１に示すＬＥＤフィラメント型電球を用いてイチゴの栽培を行った。単色のＬＥＤ素子として、ピーク発光波長が３５５ｎｍの紫外色ＬＥＤ素子を用いた。表３に実施例３の結果を示す。 Specifically, strawberries were cultivated using the LED filament type light bulb shown in FIG. As the monochromatic LED element, an ultraviolet LED element having a peak emission wavelength of 355 nm was used. Table 3 shows the results of Example 3.
（実施例４）
　単色のＬＥＤ素子として、ピーク発光波長が４５０ｎｍの青色ＬＥＤ素子を用いた以外は、実施例３と同様の条件でイチゴの栽培を行った。表３に実施例４の結果を示す。 Example 4
Strawberry cultivation was performed under the same conditions as in Example 3 except that a blue LED element having a peak emission wavelength of 450 nm was used as the monochromatic LED element. Table 3 shows the results of Example 4.
（比較例６）
　比較例６は無電照でイチゴの栽培を行った。表３に比較例６の結果を示す。 (Comparative Example 6)
In Comparative Example 6, strawberries were grown without electric lighting. Table 3 shows the results of Comparative Example 6.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
　表３に示すように、実施例３、４では、無電照である比較例６に比べてうどんこ病発生株数を減らすことができた。紫外光を照射した実施例３では青色光を照射した実施例４に比べて更にうどんこ病の発生を抑えることができた。 As shown in Table 3, in Examples 3 and 4, the number of powdery mildew disease-causing strains could be reduced as compared with Comparative Example 6 in which there was no illumination. In Example 3 irradiated with ultraviolet light, the occurrence of powdery mildew could be further suppressed as compared with Example 4 irradiated with blue light.
（実施例５）
　緑色の光には、病気に強い株を育てる効果があることが知られている。実施例５では、図１に示すＬＥＤフィラメント型電球を用いてイチゴの栽培を行った。単色のＬＥＤ素子として、ピーク発光波長が５６５ｎｍの緑色ＬＥＤ素子を用いた。表４に実施例５の結果を示す。なお、表４には上記の比較例４、５の平均株長及びイチゴ収量のデータも併記してある。 (Example 5)
It is known that green light has the effect of growing strains that are resistant to disease. In Example 5, strawberry cultivation was performed using the LED filament type light bulb shown in FIG. As a monochromatic LED element, a green LED element having a peak emission wavelength of 565 nm was used. Table 4 shows the results of Example 5. In Table 4, the average strain length and strawberry yield data of Comparative Examples 4 and 5 are also shown.
Figure JPOXMLDOC01-appb-T000004
Figure JPOXMLDOC01-appb-T000004
　表４に示すように、実施例５は、白熱電球を用いた比較例４と同程度の平均株長及びイチゴ収量であったが、比較例４、無電照である比較例５に比べて炭そ病の発生率が優位に低減した。 As shown in Table 4, Example 5 had an average stock length and strawberry yield comparable to those of Comparative Example 4 using an incandescent bulb, but compared with Comparative Example 4 and Comparative Example 5 which was non-lighted. The incidence of the disease was significantly reduced.
（実施例６）
　黄色の光には、ガを忌避させる効果があることが知られている。夜行性の害虫である夜ガ類は、夜になると活発に活動し、昼になり一定以上の明るさになると行動しなくなる性質を持つ。夜間に光を当てることによって、夜ガ類に昼間と勘違いさせて、植物を食べたり、交尾、産卵活動をしたりするのを抑制することができるため、電照による忌避効果は従来から知られていた。そこで、菊栽培畑にて、テストを行った。 (Example 6)
Yellow light is known to have an effect of repelling moths. Night moths, which are nocturnal pests, are active at night and do not act at night when they become brighter than a certain level. By applying light at night, it is possible to make night moths misunderstood as daytime, and it is possible to suppress eating plants, mating and spawning activities. It was. Therefore, a test was conducted in a chrysanthemum cultivation field.
　具体的には、図１に示すＬＥＤフィラメント型電球を用いて菊の栽培を行った。単色のＬＥＤ素子として、ピーク発光波長が５９０ｎｍの黄色ＬＥＤ素子を用いた。この電球を２ｍの高さに設置し、試験を行った。調査本数は１００本とした。８月～１２月まで、午後６時から午前６時の１２時間点灯し、害虫被害数を調査した。主に葉の食害を調査した。表５に実施例６の結果を示す。 Specifically, chrysanthemum was cultivated using the LED filament type light bulb shown in FIG. As a monochromatic LED element, a yellow LED element having a peak emission wavelength of 590 nm was used. This light bulb was installed at a height of 2 m and tested. The number of surveys was 100. From August to December, it was lit for 12 hours from 6:00 pm to 6:00 am, and the number of pest damage was investigated. Mainly investigated leaf damage. Table 5 shows the results of Example 6.
（比較例７）
　比較例７は無電照で菊の栽培を行った。表５に比較例７の結果を示す。 (Comparative Example 7)
In Comparative Example 7, chrysanthemum was cultivated without electric lighting. Table 5 shows the results of Comparative Example 7.
Figure JPOXMLDOC01-appb-T000005
Figure JPOXMLDOC01-appb-T000005
　表５に示すように、実施例６は、無電照である比較例７に比べて害虫被害数が少なかった。 As shown in Table 5, Example 6 had fewer pest damages than Comparative Example 7, which was non-lighted.
（実施例７）
　植物には、赤外光を吸収する吸収色素があることが知られている。そこで、本発明のＬＥＤフィラメント型電球を用いて赤外光の効果の調査を行った。ただし赤外光のみでは植物育成させる効果が少ないため、基準光として蛍光灯を用い、それに赤外光を足して試験を行った。試験は小松菜で行い、草丈、ビタミンＣ含有量に対する調査を行った。 (Example 7)
It is known that plants have absorption pigments that absorb infrared light. Then, the effect of infrared light was investigated using the LED filament type light bulb of the present invention. However, since infrared light alone has little effect on growing plants, a fluorescent lamp was used as reference light, and infrared light was added to the test. The test was conducted with Komatsuna and investigated for plant height and vitamin C content.
　具体的には、赤外光を発する電球として、図１に示すＬＥＤフィラメント型電球を用いて小松菜の栽培を行った。単色のＬＥＤ素子として、波長７３０ｎｍの赤外色ＬＥＤ素子を用いた。表６に実施例７の結果を示す。 Specifically, Komatsuna was cultivated using the LED filament type light bulb shown in FIG. 1 as a light bulb emitting infrared light. As a monochromatic LED element, an infrared LED element having a wavelength of 730 nm was used. Table 6 shows the results of Example 7.
（比較例８）
　比較例８は蛍光灯のみで小松菜の栽培を行った。表６に比較例８の結果を示す。 (Comparative Example 8)
In Comparative Example 8, Komatsuna was cultivated only with a fluorescent lamp. Table 6 shows the results of Comparative Example 8.
Figure JPOXMLDOC01-appb-T000006
Figure JPOXMLDOC01-appb-T000006
　表６に示すように、実施例７は蛍光灯のみで小松菜の栽培を行った比較例８に比べて草丈は増え、ビタミンＣが増加する効果があった。 As shown in Table 6, Example 7 had the effect of increasing plant height and increasing vitamin C as compared with Comparative Example 8 in which Komatsuna was cultivated only with a fluorescent lamp.
　上記の実施例１～７に示すように本発明のＬＥＤフィラメント型電球は、消費電力が小さく、電照効果に優れた電球であるということがわかる。 As shown in the above Examples 1 to 7, it can be seen that the LED filament type light bulb of the present invention is a light bulb with low power consumption and excellent illumination effect.
　なお、本発明は、上記実施形態に限定されるものではない。上記実施形態は、例示であり、本発明の特許請求の範囲に記載された技術的思想と実質的に同一な構成を有し、同様な作用効果を奏するものは、いかなるものであっても本発明の技術的範囲に包含される。 Note that the present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

Claims (10)

  1. 　複数のＬＥＤ素子が直列につながれたＬＥＤ素子列と該ＬＥＤ素子列を搭載する基板とを有するＬＥＤフィラメント、該ＬＥＤフィラメントを覆うグローブ、及び該グローブに取り付けられた口金部を具備するＬＥＤフィラメント型電球であって、
    　前記ＬＥＤフィラメント型電球が植物電照用であり、
    　前記複数のＬＥＤ素子が単色のＬＥＤ素子であり、
    　前記ＬＥＤフィラメントが単色光を発光するものであることを特徴とするＬＥＤフィラメント型電球。     An LED filament type light bulb comprising an LED filament having an LED element array in which a plurality of LED elements are connected in series and a substrate on which the LED element array is mounted, a globe that covers the LED filament, and a base attached to the globe Because
    The LED filament light bulb is for plant lighting,
    The plurality of LED elements are monochromatic LED elements,
    The LED filament light bulb, wherein the LED filament emits monochromatic light.
  2. 　前記基板が、前記ＬＥＤ素子の単色の発光波長に対して透明であることを特徴とする請求項１に記載のＬＥＤフィラメント型電球。 2. The LED filament light bulb according to claim 1, wherein the substrate is transparent with respect to a monochromatic emission wavelength of the LED element.
  3. 　前記ＬＥＤフィラメントが蛍光体を有さないものであることを特徴とする請求項１又は請求項２に記載のＬＥＤフィラメント型電球。 The LED filament bulb according to claim 1 or 2, wherein the LED filament does not have a phosphor.
  4. 　前記ＬＥＤフィラメント型電球が前記ＬＥＤフィラメントを複数有し、該複数のＬＥＤフィラメントが同じ単色光を発光するもの又は異なる単色光を発光するものであることを特徴とする請求項１から請求項３のいずれか１項に記載のＬＥＤフィラメント型電球。 The LED filament type light bulb has a plurality of the LED filaments, and the plurality of LED filaments emit the same monochromatic light or different monochromatic lights. The LED filament type light bulb according to any one of the above.
  5. 　前記口金部にＡＣ／ＤＣ変換回路を有するものであることを特徴とする請求項１から請求項４のいずれか１項に記載のＬＥＤフィラメント型電球。 The LED filament light bulb according to any one of claims 1 to 4, wherein the cap portion has an AC / DC conversion circuit.
  6. 　前記ＬＥＤフィラメント型電球の発光範囲が２７０°以上であることを特徴とする請求項１から請求項５のいずれか１項に記載のＬＥＤフィラメント型電球。 The LED filament type light bulb according to any one of claims 1 to 5, wherein a light emission range of the LED filament type light bulb is 270 ° or more.
  7. 　前記ＬＥＤフィラメント型電球の下部に、更に反射フィルムが貼り付けられたものであることを特徴とする請求項１から請求項６のいずれか１項に記載のＬＥＤフィラメント型電球。 The LED filament type light bulb according to any one of claims 1 to 6, wherein a reflective film is further attached to a lower part of the LED filament type light bulb.
  8. 　前記ＬＥＤフィラメント型電球の下部に、更に内部に反射機能を持った傘が取り付けられたものであることを特徴とする請求項１から請求項７のいずれか１項に記載のＬＥＤフィラメント型電球。 The LED filament light bulb according to any one of claims 1 to 7, wherein an umbrella having a reflection function is attached to the lower part of the LED filament light bulb.
  9. 　前記ＬＥＤフィラメント型電球の光の取り出し範囲が１８０°以下であることを特徴とする請求項７又は請求項８に記載のＬＥＤフィラメント型電球。 The LED filament bulb according to claim 7 or 8, wherein a light extraction range of the LED filament bulb is 180 ° or less.
  10. 　前記単色のＬＥＤ素子が、６２０～７００ｎｍの間に発光波長を持つ赤色ＬＥＤ素子、７００～１０００ｎｍの間に発光波長を持つ赤外色ＬＥＤ素子、１９０～４００ｎｍの間に発光波長を持つ紫外色ＬＥＤ素子、４００～４９０ｎｍの間に発光波長を持つ青色ＬＥＤ素子、４９０～５７０ｎｍの間に発光波長を持つ緑色ＬＥＤ素子、又は５７０～６２０ｎｍの間に発光波長を持つ黄色～橙色ＬＥＤ素子のいずれかであることを特徴とする請求項１から請求項９のいずれか１項に記載のＬＥＤフィラメント型電球。 The monochromatic LED element is a red LED element having an emission wavelength between 620 and 700 nm, an infrared LED element having an emission wavelength between 700 and 1000 nm, and an ultraviolet LED having an emission wavelength between 190 and 400 nm. Either a blue LED element having an emission wavelength between 400 and 490 nm, a green LED element having an emission wavelength between 490 and 570 nm, or a yellow to orange LED element having an emission wavelength between 570 and 620 nm The LED filament type light bulb according to any one of claims 1 to 9, wherein the LED filament type light bulb is provided.
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* Cited by examiner, † Cited by third party
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JP2008311002A (en) * 2007-06-13 2008-12-25 Futek Inc Compact bulb type irradiation device
JP2013522850A (en) * 2010-09-08 2013-06-13 浙江鋭迪生光電有限公司 LED bulb and LED light emitting strip capable of 4π light emission

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008311002A (en) * 2007-06-13 2008-12-25 Futek Inc Compact bulb type irradiation device
JP2013522850A (en) * 2010-09-08 2013-06-13 浙江鋭迪生光電有限公司 LED bulb and LED light emitting strip capable of 4π light emission

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