KR101954148B1 - Planar Light Source Device - Google Patents

Abstract

The present invention relates to a flat light source device, and more particularly, to a flat light source device having a plurality of discharge tubes filled with an inert gas in an inner space and provided with phosphors on an inner peripheral surface thereof; And an electrode provided on one side of the plurality of discharge tubes to apply a voltage supplied from a power supply unit to the discharge tube, wherein the plurality of discharge tubes include at least one first discharge tube and at least one second discharge tube, And the spectrum of the light emitted from the second discharge tube are different from each other.

Description

[0001] Planar Light Source Device [

More particularly, the present invention relates to a planar light source device capable of selectively irradiating light of a plurality of wavelengths, attracting and extinguishing insects, and using the same for a long period of time.

BACKGROUND ART Light source devices that emit light such as ultraviolet rays are used in various fields such as semiconductor devices, medical applications, and food processing.

Recently, it has been confirmed that a mosquito or flies can be killed through a light source device that emits light having a short wavelength including ultraviolet rays. Such a light source device is also used for home use.

In addition, as a light source apparatus, not only a point light source and a linear light source but also a plane light source apparatus are increasing.

As a configuration of the surface light source device, a light source device including a discharge tube enclosed with mercury vapor, a light source device comprising a discharge tube filled with a fluorescent material on the inner wall of the tube and filled with an inert gas or the like, and an electrode are widely used.

Japanese Laid-Open Patent Publication No. 2011-193929 discloses such a conventional flat light source device.

On the other hand, when it is desired to kill insect pests such as mosquitoes and flies through the light source device, the kinds of pests that can be killed are different based on the wavelength of the light emitted from the light source device.

The conventional light source apparatus does not consider the wavelength of light according to the kind of pests.

Further, the degree of deterioration with time varies depending on the kind of the fluorescent material used in the light source device, and deterioration of the fluorescent material also relates to the lifetime of the light source device.

There is a problem in that the conventional light source device does not take into consideration the deterioration of the fluorescent material and the lifetime of the light source device.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a planar light source device having a function of killing various types of pests and being usable for a long period of time.

According to an aspect of the present invention, there is provided a plasma display panel comprising: a plurality of discharge tubes filled with an inert gas in an inner space and provided with phosphors on an inner peripheral surface thereof; And an electrode provided on one side of the plurality of discharge tubes to apply a voltage supplied from a power supply unit to the discharge tube, wherein the plurality of discharge tubes include at least one first discharge tube and at least one second discharge tube, And the spectrum of the light emitted from the second discharge tube is different from that of the light emitted from the second discharge tube.

In the flat light source device, the plurality of discharge tubes may further include at least one third discharge tube. At this time, the spectrum of the light emitted from the third discharge tube may be different from the spectrum of the light emitted from the first and second discharge tubes.

The planar light source device may further include a support body on which the plurality of discharge tubes are installed. At this time, the electrode may be provided on one side of the support body on which the plurality of discharge tubes are installed. Further, the plurality of discharge tubes are arranged on the support body such that spectra of light emitted from neighboring discharge tubes are different from each other .

The phosphor includes a first fluorescent material 109a provided in the first discharge tube and a second fluorescent material 109b provided in the second discharge tube. At this time, the composition of the first fluorescent material 109a may be different from that of the second fluorescent material 109b.

The spectrum of the light emitted from the first discharge tube and the luminescence spectrum of the light emitted from the second discharge tube may be different from each other.

The emission spectrum of the plurality of discharge tubes may include a plurality of peak wavelengths in the ultraviolet wavelength band. The line spectrum by the plurality of discharge tubes may include light in the visible light wavelength band and light in the ultraviolet light band having a peak wavelength at 254 nm.

The emission spectrum of the plurality of discharge tubes may include a plurality of peak wavelengths in the ultraviolet wavelength band.

At this time, the plurality of peak wavelengths may include at least one of a combination of 360 nm and 254 nm, a combination of 311 nm and 254 nm, a combination of 360 nm and 417 nm, or a combination of 360 nm and 467 nm.

The plurality of peak wavelengths may include at least one of 360 nm, a combination of 254 nm and 417 nm, a combination of 360 nm and 440 nm and 254 nm, and a combination of 360 nm and 467 nm and 254 nm.

The plurality of discharge tubes are adhered to the support body by an adhesive layer, and the adhesive layer may include a first adhesive layer formed of an ultraviolet curing resin and a second adhesive layer formed of a thermosetting resin.

A protective layer may be provided on the opposite side of the support body, and the protective layer may be adhered to the plurality of discharge tubes by an adhesive layer.

The planar light source device includes a turbidity sensor for sensing turbidity of the illumination space; A switching unit provided between the power supply unit and the plurality of discharge tubes to adjust the number of discharge tubes to which a voltage is applied; And a control unit for admitting the switching device based on the turbidity of the illumination space sensed by the turbidity sensor.

Also, the surface light source device may include a case forming an outer appearance and having at least one insect inflow hole on one side thereof; And a pest detector for detecting a pest inflowing into the pest induction hall. At this time, the controller may control the switching device based on a signal from the pest detector.

The control unit may control the switching device to turn on only the discharge tube that irradiates light of the first peak wavelength for insect attraction among the plurality of discharge tubes, if the detection signal is not transmitted from the pest detector.

The control unit may control the switching device to turn on a discharge tube for irradiating light of a second peak wavelength for pest kill among the plurality of discharge tubes when the detection signal is transmitted from the pest detector.

The first peak wavelength may include 360 nm, and the second peak wavelength may include 311 nm, 412 nm, 417 nm, 440 nm, and 467 nm.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a planar light source device that has a function of killing various kinds of pests and can be used for a long time.

1 shows a planar light source device according to an embodiment of the present invention.
2 is a graph showing a change with time of light emitted from the planar light source device.
3 is a graph showing the peak wavelength depending on the kind of the phosphor.
4 is a graph showing deterioration characteristics of the phosphor over time.
5 shows a planar light source device according to another embodiment of the present invention.
6 shows another planar light source device according to another embodiment of the present invention.
7 shows a planar light source device according to another embodiment of the present invention.
8 shows a method of controlling a planar light source device according to another embodiment of the present invention.
9 shows a planar light source device according to another embodiment of the present invention.
Fig. 10 shows a modification of the planar light source device shown in Fig.

Hereinafter, an air conditioner according to the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

1 shows a planar light source device according to an embodiment of the present invention. Specifically, FIG. 1 (a) is a perspective view of the planar light source device, and FIG. 1 (b) is a partial cross-sectional view.

1, a planar light source device 10 according to an embodiment of the present invention includes a plurality of discharge tubes 103, an electrode unit 103 for applying a voltage supplied from a power supply unit 107 to the plurality of discharge tubes 103, (101).

The plurality of discharge tubes 103 may be formed to emit light 107 to the outside when a voltage is applied. Specifically, the inert gas 111 may be filled in the inner space of each of the plurality of discharge tubes 103. In addition, a phosphor 109 may be provided on the inner circumferential surface of each of the plurality of discharge tubes 103. Therefore, when the voltage of the discharge tube 103 is applied, the light 107 can be irradiated to the outside by the ionization phenomenon 116 of the gas molecules contained in the discharge tube 103.

As the inert gas 111, an inert gas such as neon (Ne), xenon (Xe), mercury (Hg) or the like may be used. For example, when xenon gas is used as the inert gas 111, light having a peak wavelength of 142 nm and 178 nm can be irradiated.

As the phosphor 109, a material capable of emitting fluorescence can be used. For example, when ZnAl 2 O 4 is used as the fluorescent material 109, light having a peak wavelength can be irradiated in the vicinity of 254 nm. Light with a wavelength of around 254 nm can damage biological DNA and has the effect of killing mosquitoes, flies, even bacteria, viruses and the like.

When SrB4O7F; Eu, BaSi2O5, Pb or the like is used as the phosphor 109, light having a peak wavelength can be irradiated in the vicinity of 360 nm. The light having a wavelength of 360 nm is favorable to insects such as mosquitoes and flies, and can induce insects such as mosquitoes and flies.

Further, when CaWO 4; Pb is used as the phosphor 109, light having a peak wavelength in the vicinity of 412 nm can be irradiated. Light with a wavelength of 417 nm has the effect of killing the mosquito. Therefore, when the phosphor is irradiated with light having a wavelength of 417 nm, the mosquito can be killed.

When YAl3 (BO3) 4; Gd or Bi is used as a phosphor, light having a peak wavelength near 450 nm and around 312 nm is irradiated. Light having wavelengths of 440 nm and 467 nm has an effect of killing flies. Light having a wavelength of 311 nm has an effect of opening a bacterial spore. Therefore, by using the above-mentioned phosphor, light of 311 nm can be irradiated with wavelengths of 440 nm and 467 nm, and it is expected that an effect of killing flies and even opening of bacteria spores can be expected.

Each of the plurality of discharge tubes 103 has a predetermined length. Both ends of each of the plurality of discharge tubes 103 may be sealed with a sealing member 105.

The plurality of discharge tubes 103 may be formed of a light-transmitting material. The plurality of discharge tubes 103 may be formed of a material capable of transmitting ultraviolet rays, visible rays, and infrared rays. For example, the plurality of discharge tubes 103 may be formed of a material such as quartz, MgF2, CaF, LiF, and heavy alkali glass.

The plurality of discharge tubes 103 may include at least one first discharge tube 103a and at least one second discharge tube 103b. The at least one first discharge tube (103a) and the at least one second discharge tube (103b) may be alternately arranged in parallel.

The electrode unit 101 may be formed of a metal element extracted from tungsten, aluminum, chromium, copper, titanium, tantalum, molybdenum, nickel, iron, cobalt, tungsten, indium, zinc or an alloy containing the metal element, And the like.

In particular, when the electrode unit 101 is formed of aluminum, the diaphragm electrode unit 101 can reflect light in the ultraviolet wavelength band.

The planar light source device 10 may further include a support body 100 on which the plurality of discharge tubes 103 are installed. The support body 100 may be formed in a flat plate shape.

The electrode 101 may be provided on one side of the supporting body 100 on which the plurality of discharge tubes 103 are installed. That is, the electrode 101 may be provided on one side of the support body 100, and the plurality of discharge tubes 103 may be disposed on the electrode 101. Therefore, the voltage supplied from the power supply unit 107 can be applied to the plurality of discharge tubes 103 provided in the support body 100 through the electrode 101. [

The plurality of discharge tubes 103 may be adhered to the support body 100 by an adhesive layer 115. Specifically, the electrode 101 may be disposed on the supporting body 100, and the adhesive layer 115 may be provided on the electrode 101. Here, the supporting body 100 may be represented by a substrate.

The adhesive layer 115 may be formed of a composite material of an organic material, an organic material, and an inorganic material. For example, as the material of the adhesive layer 115, an epoxy resin, an acrylic resin, a silicone resin phenol resin, a polyimide resin, a very resin, a silica gel, and a combination thereof may be used.

The adhesive layer 115 may include a first adhesive layer formed of an ultraviolet curable resin and a second adhesive layer formed of a thermosetting resin. For example, a plurality of discharge tubes 103 may be temporarily fixed on the supporting body 100 through the first adhesive layer, and a plurality of discharge tubes 103 may be completely fixed on the supporting body 100 through the second adhesive layer. have.

As the plurality of discharge tubes 103 are temporarily fixed through the first adhesive layer, a defective discharge tube in the manufacturing process can be easily replaced. Further, the plurality of discharge tubes 103 can be firmly adhered to the support body 100 through the second adhesive layer.

A protective layer 113 may be provided on the opposite side of the support body 100. That is, the protective layer 113 may be provided on the opposite side of the support body 100 with respect to the plurality of discharge tubes 103. The plurality of discharge tubes 103 and the electrodes 101 can be protected from external impact by the protective layer 113.

The protective layer 113 may also be adhered to the plurality of discharge tubes 103 by an adhesive layer 115. That is, the adhesive layer 115 may be provided between the plurality of discharge tubes 103 and the supporting body 100, and between the plurality of discharge tubes 103 and the protective layer 113, respectively.

The protective layer 113 is preferably formed of a material having deterioration resistance to light in the ultraviolet wavelength band and transmittance to light in the ultraviolet wavelength band.

The spectrum of the first light 117a emitted from the first discharge tube 103a may be different from the spectrum of the second light 117b emitted from the second discharge tube 103b. Therefore, light 117 of various spectra can be irradiated to the illumination space in one flat light source device 10. [

Specifically, the fluorescent material 109 may include a first fluorescent material 109a provided in the first discharge tube 103a and a second fluorescent material 109b provided in the second discharge tube 103b. At this time, the composition of the first fluorescent material 109a may be different from that of the second fluorescent material 109b. Therefore, the spectrum of the first light 117a emitted from the first discharge tube 103a and the spectrum of the second light 117b emitted from the second discharge tube 103b may be different from each other.

Particularly, the luminance spectrum of the first light 117a emitted from the first discharge tube 103a and the luminance spectrum of the second light 117b emitted from the second discharge tube 103b may be different from each other. Accordingly, various types of light can be irradiated to the illumination space through the first discharge tube 103a and the second discharge tube 103b.

The emission spectrum of the plurality of discharge tubes 103 may include a plurality of peak wavelengths in the ultraviolet wavelength band. That is, the emission spectrum of the light emitted from the first discharge tube 103a may have a peak wavelength different from the emission spectrum of the light emitted from the second discharge tube 103b.

In particular, the line spectrum by the plurality of discharge tubes 103 may include light in a visible light wavelength band and light in a ultraviolet band having a peak wavelength at 254 nm. Therefore, the plurality of discharge tubes 103 can have a pest sterilizing effect simultaneously with the illumination effect.

The plurality of peak wavelengths may include at least one of a combination of 360 nm and 254 nm, a combination of 311 nm and 254 nm, a combination of 360 nm and 417 nm, or a combination of 360 nm and 467 nm.

For example, when the light having the peak wavelengths of 360 nm and 254 nm is irradiated from the surface light source device 10 in combination, the pests such as mosquitoes and flies are collected using the light of 360 nm, In addition, microorganisms such as bacteria and viruses attached to human limbs can be killed.

As described above, when light of a plurality of peak wavelengths is irradiated from the planar light source device 10, it is possible to effectively kill insects such as mosquitoes and flies. That is, the surface light source device 10 can imagine the insecticide killing efficiency in the illumination space through the combination of the light that attracts insects and the light that affects the insects.

When the light having a peak wavelength of 311 nm and a wavelength of 254 nm are irradiated in combination from the surface light source device 10, spores of bacteria are opened due to light having a peak wavelength of 311 nm, and microorganisms such as bacteria and viruses caused by light having a peak wavelength of 254 nm Can be killed.

The blue light having the peak wavelength of 417 nm has the effect of killing the mosquito, and the blue light having the peak wavelength of 467 nm has the effect of killing the flies. Light having a peak wavelength of 280 to 315 nm is a region where the light absorption of the melanin pigment is high, and the insect can be killed by heat. The light in the infrared region having a peak wavelength of 3000 to 20,000 nm has the effect of drying and killing insects on the surface side. Therefore, it is possible to effectively eliminate insects such as mosquitoes and flies by appropriately combining and using lights of respective wavelengths.

Further, when light having an emission spectrum with a peak wavelength of 184 nm is irradiated, ozone can be generated in the air outside the discharge tube. Ozone has the function of destroying spores such as bacteria. When light having wavelengths of 184 nm and 254 nm are combined, spores of bacteria due to light having a peak wavelength of 184 nm are opened, and microorganisms such as bacteria and viruses caused by light having a peak wavelength of 254 nm can be killed.

As described above, the planar light source device 10 according to the present invention effectively controls the spectrum of the light emitted from the at least one first discharge tube 103a and the spectrum of the light emitted from the at least one second discharge tube 10b, Attract and die.

2 is a graph showing a change with time of light emitted from the planar light source device. Specifically, FIG. 2 is a graph that variously adjusts the irradiation time of the first light 117a and the second light 117b.

Referring to FIG. 2 (a), it is possible to start emitting the first light 117a at time t1. The emission of the first light 117a can be stopped at time t2 and the emission of the second light 117b can be started. At time t3, the emission of the second light 117b can be stopped and the emission of the first light 117a can be started. This control can be repeated at times t4 and t5.

On the other hand, the irradiation time at which the first light 117a is irradiated and the irradiation time at which the second light 117b are irradiated may be the same (see Fig. 4 (a)), One of the first light 117a and the second light 117b may be continuously irradiated for a predetermined period of time (see FIG. 4 (b)). 4 (c)).

3 is a graph showing the peak wavelength depending on the kind of the phosphor. That is, FIG. 3 is a graph showing light intensities according to wavelengths of different kinds of phosphors (phosphors A and B).

4 is a graph showing deterioration characteristics of the phosphors A and B with time.

3 and 4, the fluorescent spectrum of the phosphor A has a peak wavelength near 254 nm and a high light intensity. Because of this, it has high sterilization effect but has a tendency to degenerate. On the other hand, the fluorescent spectrum of the phosphor B has a peak wavelength near 245 nm and 280 nm, and the light intensity is low. Therefore, although the bactericidal effect of the phosphor B is lower than that of the phosphor A, the degree of deterioration with time is better than that of the phosphor B.

When the phosphor having different characteristics as described above is suitably used for a plurality of discharge tubes, it is possible to increase the pest kill effect and extend the service life of the discharge tube.

As described later, only the discharge tube provided with the fluorescent substance A is normally used, and the discharge tube provided with the fluorescent substance B only when the insect is detected can be used to achieve both the effect of increasing the pest kill effect and the life span of the discharge tube.

Hereinafter, a planar light source device according to another embodiment of the present invention will be described with reference to other drawings.

In the following description of the other embodiments for the sake of convenience of description, the description of the same or corresponding structure as that of the embodiment described with reference to FIG. 1 is replaced with the above description, .

5 shows a planar light source device according to another embodiment of the present invention.

The flat light source device 10 according to the present embodiment may further include at least one third discharge tube 103c.

That is, the plurality of discharge tubes 103 may include one or more first discharge tubes 103a, one or more second discharge tubes 103b, and one or more third discharge tubes 103c. One or more first discharge tubes 103a, one or more second discharge tubes 103b and one or more third discharge tubes 103c may be formed to irradiate light 117 of different spectra.

For example, the first discharge tube 103a irradiates the first light 117a, the second discharge tube 103b irradiates the second light 117b, and the third discharge tube 103c irradiates the third light 117b. And may be formed to irradiate light 117c. That is, the compositions of the phosphors provided inside the first discharge tube 103a, the second discharge tube 103b and the third discharge tube 103c may be different from each other.

The first discharge tube 103a, the second discharge tube 103b, and the third discharge tube 103c may be alternately arranged in parallel.

 The emission spectrum of the plurality of discharge tubes may include a plurality of peak wavelengths in the ultraviolet wavelength band. For example, the spectrum of the light emitted from the first discharge tube 103a, the second discharge tube 103b, and the third discharge tube 103c may include different peak wavelengths.

For example, the plurality of peak wavelengths may include at least one of 360nm, a combination of 254nm and 417nm, a combination of 360nmnm and 440nm and 254nm, and a combination of 360nm and 467nm and 254nm.

When three types of light having peak wavelengths of 360 nm, 254 nm, and 417 nm are irradiated in combination, the mosquito can be killed more effectively than when two types of light are irradiated. Similarly, when three kinds of lights having peak wavelengths of 360 nm, 440 nm, and 467 nm are irradiated in combination, the flies can be more effectively killed than when two kinds of light are scattered.

6 shows another planar light source device according to another embodiment of the present invention.

The planar light source device 10 according to the present embodiment may include a plurality of support bodies separated from each other.

6 (a), a plurality of support bodies may include a first support body 100-1 and a second support body 100-2.

At least one first discharge tube 103a formed to irradiate the first light 117a is disposed on the first supporting body 100-1 and a second light 117b is irradiated on the second supporting body 100-2. The second discharge tube 103b may be arranged to irradiate the second discharge tube 103b.

An electrode 101 may be provided between the first supporting body 100-1 and the first discharge tube 103a and between the second supporting body 100-2 and the second discharge tube 103b .

Power can be selectively supplied from the power supply unit 107 toward the first discharge tube 103a and the second discharge tube 103b. That is, the power supply unit 107 may selectively supply power to the electrode 101 connected to the first discharge tube 103a and the electrode 101 connected to the second discharge tube 10b.

For example, the power supplied from the power supply unit 107 to the first discharge tube 103a and the second discharge tube 103b may be controlled according to time as shown in FIG.

Referring to FIG. 6B, the plurality of support bodies may include a first support body 100-1, a second support body 100-2, a third support body 100-3, and a fourth support body 100-3 100-4).

And a discharge tube for irradiating a spectrum of a different light to each of the support bodies may be provided.

For example, on the first supporting body 100-1, at least one first discharge tube 103a formed to irradiate the first light 117a is arranged, and on the second supporting body 100-2, One or more second discharge tubes 103b formed to irradiate the third light 117b are disposed on the third supporting body 100-3 and one or more third discharge tubes 103c arranged to irradiate the third light 117c are arranged on the third supporting body 100-3 And one or more fourth discharge tubes 103d formed to irradiate the fourth light 117d may be disposed on the fourth supporting body 100-4.

Power can be selectively supplied from the power supply unit 107 toward the first to fourth discharge tubes 103a to 103d. That is, the power supply unit 107 may selectively supply power to the electrodes 101 independently connected to the first to fourth discharge tubes 103a to 103d.

7 shows a planar light source device according to another embodiment of the present invention.

The surface light source device 10 may include a plurality of discharge tubes 103 on one support body 100. The plurality of discharge tubes 103 may include one or more first discharge tubes 103a and one or more second discharge tubes 103b.

The flat light source device 10 according to the present embodiment may further include a turbidity sensor 119 configured to detect turbidity of the illumination space. That is, the turbidity sensor 119 may be configured to sense the turbidity of the gas existing in the air conditioning space.

The turbidity sensor 119 may be disposed on the support body 100. More specifically, the turbidity sensor 119 may be disposed between the first discharge tube 103a and the second discharge tube 103b.

The turbidity sensor 119 may be connected to the controller 121. The control unit 121 can control the power supply unit 107 based on the signal from the turbidity sensor 119. [

A switching device 122 controlled by the control unit 121 may be provided on one side of the power supply unit 107. That is, the switching device 122 may be provided between the power supply unit 107 and the plurality of discharge tubes 103 to control the number of the discharge tubes to which the voltage is applied. In other words, the switching device 122 may selectively apply a voltage from the power supply unit 107 to the first discharge tube 103a and the second discharge tube 103b.

That is, a voltage may be applied from the power supply unit 107 to at least one of the first discharge tube 103a and the second discharge tube 103b based on the driving of the switching device 122. [

For example, the control unit 121 may control the switching device 122 based on the turbidity of the illumination space sensed by the turbidity sensor 119.

Specifically, when the turbidity of the gas present in the illumination space sensed by the turbidity sensor 119 is greater than a predetermined value, the control unit 121 outputs a voltage to a larger number of discharge tubes than when the turbidity is less than a preset value So that the switching device 122 can be controlled.

In contrast, when the turbidity of the gas in the illumination space sensed by the turbidity sensor 119 is less than a predetermined value, the control unit 121 controls the switching unit 120 such that the voltage is applied to a smaller number of discharge tubes The device 122 can be controlled.

Alternatively, the control unit 121 may control the switching device 122 to increase or decrease the number of discharge tubes to which a voltage is applied in proportion to the turbidity sensed by the turbidity sensor 119. At this time, the number of the discharge tubes to which the voltage corresponding to the turbidity is applied can be prepared as a table through experiments.

FIG. 8 shows a planar light source device according to another embodiment of the present invention.

The flat light source device 10 according to the present embodiment may further include a light amount detector 123 controlled by the control unit 121. [

The control unit 121 controls the power supply unit 107 and the plurality of discharge tubes 103 so that a voltage is applied to at least one of the plurality of discharge tubes 103 based on the amount of light detected by the light quantity detector 123. [ The switching device 122 can be controlled.

For example, the control unit 121 may control the switching device 122 such that the amount of light detected by the light amount detector 123 is within a predetermined range.

That is, the control unit 121 can continuously receive a signal from the light amount detector 123, and based on the signal, the light amount detector 123 detects the number of discharge tubes to which the voltage is applied so that the detected amount of light is within a predetermined range Can be adjusted.

Fig. 9 shows a modification of the planar light source device according to still another embodiment.

The flat light source apparatus 10 according to the present embodiment may further include a case 11 forming an outer appearance and pest detectors 125 and 126 for detecting pests infiltrated into the case 11. [

The case 11 may be formed so as to surround the side surface of the surface light source device 10. At least one pest induction hole 127 may be provided on one side of the eccentric case 11.

The pest detectors (125, 126) are provided in the case (11). Specifically, the pest detectors 125 and 126 may be configured to detect a pest that is introduced into the case 11 through the pest induction hole 127.

More specifically, the pest detectors 125 and 126 may include an infrared transmitter 125 and an infrared receiver 126. The infrared ray transmitter 125 and the infrared ray receiver 126 may be spaced apart from each other along the longitudinal direction of the case 11 having the insect hole 127 formed therein.

The infrared ray transmitter 125 and the infrared ray receiver 126 may be arranged at a distance larger than the interval between the two insect hole holes 127 formed at the outermost side in the case 11, They can be separated from each other.

The infrared transmitter 125 and the infrared receiver 126 may be connected to the controller 121.

The infrared ray transmitter 125 continuously transmits infrared rays toward the infrared ray receiver 126. At this time, if the signal received by the infrared receiver 126 is interrupted, the controller 121 may determine that the insect has been introduced into the case 11 through the insect hall 127.

At this time, the controller 121 may control the switching device 122 based on the signals from the pest detectors 125 and 126.

Specifically, if the detection signal is not transmitted from the pest detectors 125 and 126, the controller 121 controls only the discharge tubes for irradiating light of the first peak wavelength to attract insects among the plurality of discharge tubes 103 The switching device 122 can be controlled to be turned ON.

For example, the first discharge tube 103a of the plurality of discharge tubes 103 can irradiate light of the first peak wavelength to attract insects when a voltage is applied thereto. The control unit 121 controls the switching device 122 to apply a voltage only to the first discharge tube 103a of the plurality of discharge tubes 103 when the detection signal is not transmitted from the pest detectors 125 and 126 can do.

The first discharge tube 103 may be disposed farther from the insect hall 127 than the second discharge tube 103b and the third discharge tube 103c to be described later.

On the other hand, when a detection signal is transmitted from the pest detectors 125 and 126, the control unit 121 further turns ON the discharge tube for irradiating light of the second peak wavelength for pest kill among the plurality of discharge tubes 103, So that the switching device 122 can be controlled.

For example, the second discharge tube 103b and the third discharge tube 103c of the plurality of discharge tubes 103 can irradiate light of the second peak wavelength for the destruction of insects. Accordingly, when the detection signal is transmitted from the pest detectors 125 and 126, the controller 121 controls the second discharge tube 103b and the third discharge tube 103b in a state that the first discharge tube 103a is turned on, The switching device 122 can be controlled so that the switching device 103c is further turned on.

At this time, the peak wavelength of the light emitted from the second discharge tube 103b and the peak wavelength of the light emitted from the third discharge tube 103c may be different from each other in order to kill different pests.

For example, the first peak wavelength may include 360 nm, and the second peak wavelength may include 311 nm, 412 nm, 417 nm, 440 nm, and 467 nm.

According to the present embodiment, the insect is introduced into the case 11 through the insect inflow hole 127 by the light irradiated by the first discharge tube 103a. Between the second discharge tube 103b and the third discharge tube 103c, the insect can be killed by the light emitted from the second discharge tube 103b and the third discharge tube 103c.

Fig. 10 shows a modification of the planar light source device shown in Fig.

The present embodiment is different from Fig. 9 in the number and arrangement of the second discharge tube 103b and the third discharge tube 103c for irradiating light for the pest kill.

The second discharge tube 103b and the third discharge tube 103c may be provided in pairs. One second discharge tube 103b and one third bar tube 103c are arranged side by side in the width direction of the case 11 in the case 11 and one A three-discharge tube 103c and one second discharge tube 103b are arranged side by side.

That is, as shown in the drawing, two second discharge tubes 103b are disposed at positions relatively close to the insect inflow hole 127 so as to be spaced apart from each other in the width direction of the case 11. [ In addition, two third discharge tubes 103c are arranged at positions relatively far from the insect inflow hole 127 so as to be spaced apart from each other in the width direction of the case 11. [

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

100 Support Body (Substrate) 101 Electrode
103 Discharge tube 107 Power supply
121 control unit 122 switching device

Claims (15)

A case which forms an appearance and has a plurality of insect introduction holes on one side thereof;
A plurality of discharge tubes filled with an inert gas in the inner space and provided with phosphors on an inner peripheral surface provided in the case;
An electrode provided on one side of the plurality of discharge tubes to apply a voltage supplied from a power supply unit to the discharge tube;
A turbidity sensor for detecting the turbidity of the illumination space;
A pest detector for detecting pests inflowing into the insect hall;
A switching unit provided between the power supply unit and the plurality of discharge tubes to adjust the number of discharge tubes to which a voltage is applied; And
And a control unit for controlling the switching device based on at least one of a signal from the pest detector and a turbidity sensed by the turbidity sensor,
Wherein the plurality of discharge tubes include at least one first discharge tube and at least one second discharge tube, wherein a spectrum of light emitted from the first discharge tube and a spectrum of light emitted from the second discharge tube are different from each other,
Wherein the pest detector comprises an infrared transmitter and an infrared receiver arranged so as to be spaced apart from each other in a side longitudinal direction of the case having the pest induction hole formed therein,
Wherein the infrared transmitter and the infrared receiver are arranged to be spaced apart from each other by an interval larger than a distance between two outermost pest inflow holes of the plurality of infestation inflow holes,
The control unit controls the switching device so that a voltage is applied to a larger number of discharge tubes when the turbidity of the gas present in the illumination space sensed by the turbidity sensor is greater than a predetermined value and the turbidity is less than a preset value . The method according to claim 1,
Wherein the plurality of discharge tubes further include at least one third discharge tube,
And the spectrum of the light emitted from the third discharge tube is different from the spectrum of the light emitted from the first and second discharge tubes. 3. The method according to claim 1 or 2,
Further comprising a support body on which the plurality of discharge tubes are installed,
The electrode is provided on one surface of the support body on which the plurality of discharge tubes are installed,
Wherein the plurality of discharge tubes are disposed on the support body such that spectrums of light emitted from neighboring discharge tubes are different from each other. The method according to claim 1,
The phosphor includes a first fluorescent material 109a provided in the first discharge tube and a second fluorescent material 109b provided in the second discharge tube,
And the composition of the first phosphor (109a) is different from the composition of the second phosphor (109b). The method according to claim 1,
Wherein the spectrum of the light emitted from the first discharge tube and the spectral line of the light emitted from the second discharge tube are different from each other. The method according to claim 1,
Wherein the emission spectrum of the plurality of discharge tubes includes a plurality of peak wavelengths in an ultraviolet wavelength band,
Wherein the line spectrum by the plurality of discharge tubes includes light in a visible light wavelength band and light in an ultraviolet light band having a peak wavelength at 254 nm. The method according to claim 1,
Wherein the emission spectrum of the plurality of discharge tubes includes a plurality of peak wavelengths in an ultraviolet wavelength band,
Wherein the plurality of peak wavelengths include at least one of a combination of 360 nm and 254 nm, a combination of 311 nm and 254 nm, a combination of 360 nm and 417 nm, or a combination of 360 nm and 467 nm. The method according to claim 2, wherein
Wherein the emission spectrum of the plurality of discharge tubes includes a plurality of peak wavelengths in an ultraviolet wavelength band,
Wherein the plurality of peak wavelengths include at least one of 360nm, a combination of 254nm and 417nm, a combination of 360nmnm and 440nm and 254nm, and a combination of 360nm and 467nm and 254nm. The method of claim 3,
Wherein the plurality of discharge tubes are bonded onto the support body by an adhesive layer,
Wherein the adhesive layer comprises a first adhesive layer formed of an ultraviolet curable resin and a second adhesive layer formed of a thermosetting resin. The method of claim 3,
A protective layer is provided on the opposite side of the support body,
Wherein the protective layer is adhered to the plurality of discharge tubes by an adhesive layer. delete delete The method according to claim 1,
Wherein the controller controls the switching device to turn on only a discharge tube for irradiating light of a first peak wavelength for insect induction among the plurality of discharge tubes when a detection signal is not transmitted from the insect pest detector. 14. The method of claim 13,
Wherein the control unit controls the switching device so that a discharge tube for irradiating light of a second peak wavelength is further turned on for a pest kill among the plurality of discharge tubes when the detection signal is transmitted from the pest detector. 15. The method of claim 14,
Wherein the first peak wavelength includes 360 nm, and the second peak wavelength includes 311 nm, 412 nm, 417 nm, 440 nm, and 467 nm.

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