JP3103312U - Downlight with negative ion generator - Google Patents

Abstract

Provided is a downlight in which an illumination area and an emission area of negative ions are overlapped by incorporating a minus generator to clearly indicate the working area of both.
A negative ion generating source constitutes an opposed discharge electrode by arranging a cylindrical electrode and a needle electrode to face each other, and applying a high DC voltage with the needle electrode as a negative electrode and the cylindrical electrode as a positive electrode. By doing so, a downlight incorporating a negative ion generator that does not require a blowing means such as a fan that emits air containing negative ions.
[Selection diagram] Fig. 1

Description

  The present invention relates to a downlight type lighting device incorporating a negative ion generator that generates negative ions and a small amount of ozone that do not require a unique blowing means.

  As a method for electrically generating negative ions, a corona discharge method or a single-needle method has been adopted. In the corona discharge method, the shape of the electrode can be roughly classified into a needle shape and an ionization line.In particular, the applicant has already filed a corona discharge method combining a negative needle electrode and a positive cylindrical electrode as a counter electrode. ((Patent Literature 1) Japanese Patent No. 3017146), by forming the counter electrode in a cylindrical shape as seen in the products being implemented, a clear electronic wind is generated, and since there is a dust collecting ability, a fanless system is provided. It is also used as a type of air purifier.

The single-needle method is often sold at a relatively inexpensive price as a product that takes advantage of the recent trend of the negative ion boom, but it does not have a positive counter electrode and has a high needle negative electrode. This is a mechanism that generates negative ions by applying a voltage, and emits electrons into the air by the force of the voltage with almost no electron wind. Patent Document 2 (Japanese Patent Laid-Open No. 2001-321661) discloses an example of the single-needle system. It is sold with a fan installed or its generation unit incorporated in an air conditioner or fan.
Patent No. 3017146 JP 2001-321661 A

The air purifiers that emit these negative ions are of a floor-standing type or a type that is installed at a high place such as on a shelf.
The present applicant has found that when negative ions are emitted downward from a cylindrical electrode that does not require a blowing means such as a fan, the attenuation rate of the negative ions due to the emission distance is small, and the negative ions are emitted from the ceiling toward the floor surface. Thus, a device for making the environment of negative ions uniform has already been filed (Japanese Patent Application No. 2003-425842).
Since negative ions are colorless and odorless, it is difficult to confirm the presence of negative ions even if a negative ion generator is installed indoors.
The present invention provides a device in which a lighting area and an emission area of a negative ion are overlapped and a working area of both is clarified by incorporating a negative ion emitting device into a downlight which is a highly directional lighting device. It is.

(1) A downlight equipped with a light emitting source and a negative ion generating source,
A negative ion source is configured by disposing a cylindrical electrode and a needle electrode to face each other to form an opposed discharge electrode, and applying a high DC voltage with the needle electrode as a negative electrode and the cylindrical electrode as a positive electrode. A downlight with a negative ion generator, which is a negative ion generator that emits a wind containing negative ions.
(2) The reflector according to (1), wherein at least a reflector that reflects the light of the light source is provided in the housing having an opening at the lower side, and a negative ion source is disposed between the reflector and the side plate of the housing. Downlight with negative ion generator.
(3) At least a reflector that reflects light from a light source is provided in a housing that is open at the bottom, a hole for sending out negative ion wind is provided in the reflector, and the reflector is detachably mounted from below. The downlight with a negative ion generator according to (1).
(4) The downlight with a negative ion generator according to any one of (1) to (3), wherein the illumination range and the negative ion emission range are overlapped.
(5) The negative ion generation according to any one of (1) to (4), wherein the negative ion generation source is configured by combining an opposed discharge electrode and a single-needle discharge electrode serving as a negative electrode. Downlight with bowl.
(6) The downlight with a negative ion generator according to any one of (1) to (5), wherein a germicidal lamp is used as a light emitting source.
(7) A discharge electrode mounting body in which an exterior plate having an opening for light and a delivery hole for negative ion wind is mounted on at least the lower opening of the housing which is open at the bottom, and a discharge electrode is mounted on the exterior plate. The downlight with a negative ion generator according to any one of (1) to (6), wherein the downlight is detachably mounted from below.
(8) The method according to any one of (1) to (7), wherein the cylindrical electrode is a tunnel formed by providing a through hole in a cylindrical or thick plate having a thickness of 3 to 30 mm. Downlight with negative ion generator.
(9) The needle electrode and / or single needle electrode is made of titanium or a titanium-based material, and the cylindrical electrode is an electrode material containing a photocatalyst such as titanium oxide. Downlight with a negative ion generator according to any of the above.
(10) The needle-shaped electrode of the opposed discharge electrode is located on an extension of the axis of the tube of the cylindrical electrode, and is arranged at a distance of 1 to 5 mm, preferably 2 to 3 mm from the opening surface. The downlight with a negative ion generator according to any one of (1) to (9).
(11) Negative ions are released from the single needle electrode, and negative ions and a small amount of ozone are released from the opposite discharge electrode by corona discharge. Downlight with negative ion generator as described in.
(12) The downlight with a negative ion generator according to any one of (1) to (11), wherein a plurality of opposed discharge electrodes are provided.

(1) By overlapping the illumination range of the downlight and the negative ion emission range, the effects of both can be clarified.
(2) By combining the characteristics of the downlight, which is small and spotlight illumination, and the small negative ion generator which does not require a fan, the negative ion atmosphere of the illumination range of the spotlight can be obtained without losing the small characteristic. Since a uniform density can be realized, the negative ion environment can be clearly specified by the illumination range.
(3) The illumination range of the downlight with a ceiling at a height of 2.5 to 3 m has a diameter of 2 to 5.5 m in many cases, and a high density range of negative ions emitted from the opposed discharge electrode used in the present invention. Also has a diameter of 3 to 5 m, so that both can be overlapped.
(4) When the arrangement of the light source and the negative ion sending hole is arranged around, the maintenance of the light source such as a light bulb and the maintenance of the negative ion generator can be performed separately.
(5) When the negative ion sending hole is provided in the reflector of the light source, it is not necessary to change the outer shape of the downlight. In this case, maintenance of the negative ion generator can be facilitated by detachably mounting the reflection shade from below.
(6) Quiet and energy-saving because no blowing means such as a fan is used.
(7) The amount of negative ion generation can be increased by combining the opposite discharge electrode and the single-needle (120) discharge electrode serving as the negative electrode as the negative ion generation source.
(8) When a germicidal lamp is used as a light emitting source, a bacteriostatic effect and a germicidal effect can be achieved by a synergistic effect with a negative ion and an ozone effect.
(9) By detachably mounting the discharge electrode mounting body on the outermost side, maintenance such as cleaning such as removal of dust adhering in the cylinder serving as the positive electrode can be facilitated.
(10) By mounting the discharge electrode mounting body on which the discharge electrode is mounted, the discharge electrode can be attached or detached without changing the positional relationship between the negative electrode and the positive electrode constituting the discharge electrode. And provide highly reliable products.
(11) The durability and negative ion generation amount are increased by using a titanium or titanium-based material for the needle electrode and / or the single needle electrode and using a titanium-based electrode material containing a titanium oxide photocatalyst for the cylindrical electrode. Can be done. Further, the dust adsorbed on the positive electrode is decomposed by the action of the photocatalyst, the dust floating in the room is reduced, and the use time of the positive electrode can be extended.
(12) The needle-shaped electrode of the opposed discharge electrode is located on the axial extension of the tube of the cylindrical electrode, and is arranged at a distance of 1 to 5 mm, preferably 2 to 3 mm from the opening surface, so that a large amount of negative ions can be obtained. And a small amount of ozone can be released.
(13) Negative ions are emitted from the single needle electrode, negative ions and a small amount of ozone are emitted from the opposite electrode by corona discharge, and further weak ultraviolet light can be emitted from the needle electrode.
(14) When a plurality of opposed discharge electrodes are provided, the decay rate of negative ions can be suppressed as compared with the case where only one discharge electrode is provided.
(15) Since it is a ceiling-mounted type or a suspended type, it can be installed at regular intervals, and the distribution of negative ions and the like can be made uniform from a small room to a large room.
(16) By using a combination of negative ions and a small amount of ozone, the present device can synergistically exert effects such as sterilization, sterilization, deodorization, and smoke removal.
(17) This device generates weak ultraviolet rays, and the decomposition of substances that rise upward, such as odor molecules, smoke particles, and dust particles, is promoted by the photocatalytic action of titanium oxide on the cylindrical electrode.
(18) The use of this device is not particularly limited, but it can be used in general rooms, hospitals, cars, trains, commercial facilities, recreational facilities, restaurants, restaurants, beauty and barber shops, smoking areas, fresh shops, Examples include various facilities and locations such as food counters, factories, pet shops, animal hospitals, ceilings, warehouses, and the like, fresh food displays, washbasins, dressing tables, and the like.
(19) The device provided by the present invention is also a downlight lighting device with an air purifier function.

According to the present invention, by blowing air containing negative ions and a small amount of ozone directly downward from the generator, the attenuation of the amount of negative ions and ozone in a certain range of space immediately below is significantly smaller than that of blowing horizontally. And produced a negative ion generator with the emission hole directed downward, and incorporated it into a downlight lighting device. See FIG. 1 and FIG.
The negative ion generator used in the present invention generates a small amount of ozone in addition to the negative ions, and the floating dust and smoke contacting the negative ions settle on the floor or adhere to the cylinder which is a positive electrode. The needle-like electrode, which is an electrode, emits weak ultraviolet light, and dust and bacteria are decomposed by the action of a photocatalyst contained in the positive electrode material, thereby exhibiting an effect of purifying air.
Further, it has been confirmed that the attenuation rate can be further reduced by providing a plurality of the negative ion generators more than one, so that the air cleaning function can be improved by providing a plurality of the negative ion generators.
In addition, by focusing on the fact that the discharge amount of negative ions can be further increased by using a single needle-shaped discharge electrode in combination, it is possible to improve the air cleaning function by combining a single needle-shaped discharge electrode. You can do it.
The illumination range of the downlight luminaire at a distance of 2.5 to 3 m, which is a normal ceiling height, is about 2 to 5.5 m in diameter. This irradiation range is a range that overlaps with a range in which the negative ion density is high when emitted from the cylinder of the positive electrode such as the cylinder employed in the present invention toward the bottom. Since negative ions are colorless and odorless, it was difficult to clearly indicate the range of action of negative ions, but by combining both, the range of high density of negative ions was specified by the illumination range. This is what made it possible.
FIG. 6 schematically shows a state of an irradiation test of negative ions and light from the ceiling.

<Ceiling installation test>
FIG. 6 shows a situation in which a downlight with a negative ion generator having four opposed discharge electrodes mounted on a 2.5 m ceiling is embedded. Near the discharge hole, negative ions of 500,000 electrodes / electrode were measured at a wind speed of about 3 m / sec. On the floor surface, negative ions of 370,000 to 400,000 cells / electrode in a range of 3.5 m in diameter were obtained. Ions were measured. The decay rate is 20-26%. The rate of impairment was defined as the decay rate. In this case, for example, 100% −370,000 / 500,000 × 100% = 26%.
Light irradiation has an irradiation angle of 70 degrees and an irradiation range of 3.5 m in diameter. In addition, the irradiation angle of a commercially available downlight is about 44 degrees to 84 degrees, and an irradiation range of a diameter of 2 to 5 m is often used at a distance of 2.5 m.

<Container>
The downlight with a negative ion generator is provided with a light source for illumination and a discharge electrode for generating negative ions and the like, and a power supply, a wiring, and a mounting device to be supplied to each of them are incorporated in a container.
The container is constituted by a housing having at least a lower opening, a socket for mounting a light source such as a light bulb, a reflection shade surrounding the light source, and a discharge electrode mounting body for supporting a negative ion generating electrode detachably mounted from below. , And each power supply is incorporated.
Since the cylindrical electrode of the opposed discharge electrode used in the present invention needs to perform cleaning maintenance accompanying dust collection, it is necessary to adopt a configuration to ensure the easiness of the maintenance. For this reason, in a downlight which is often embedded in a ceiling, it is advantageous to detachably mount the discharge electrode from the lower surface in a state where the downlight is attached to the ceiling. When the discharge electrode is mounted on an independent mounting body, the mounting body is detachable from below, and when the discharge electrode is mounted on the reflector, the reflector is detachable from below.
The opposite discharge electrode that performs a silent corona discharge adopted in the present invention is important to maintain a constant positional relationship between the needle electrode and the positive electrode in order to maintain performance, and this relationship is disturbed when attaching and detaching the electrode. It is necessary to devise it. The needle electrode can be mounted on the housing or on the front mounting plate as long as the needle electrode and the cylindrical electrode (tunnel) can be maintained in a predetermined arrangement. However, when a ceiling plate or the like is interposed between the housing opening and the front mounting plate, the positional relationship between the cylindrical electrode (tunnel) and the needle electrode is maintained at a predetermined positional relationship because the ceiling plate is interposed. Because it is difficult, attaching a cylindrical (tunnel) electrode and a needle electrode to the discharge electrode mounting plate side is more suitable for exhibiting predetermined performance.
When a plurality of opposed discharge electrodes are used, when they are integrally formed as a cartridge, it is useful to maintain a predetermined relationship between the work of attaching to and detaching from the discharge electrode attachment plate for maintenance and maintenance, and the positional relationship.
The arrangement number and positional relationship between the light source and the negative ion generator are not particularly specified. There is no restriction such as being arranged on one side of the light source, or being equally arranged in an arbitrary number around the light source. It is also possible to adopt a mode in which the negative ion emission hole is exposed or provided on the reflector to make it difficult to directly see. However, when an emission hole is provided in the reflection shade, it is preferable to use a fluorescent lamp because air heated by an incandescent bulb or the like may flow backward and inhibit emission of negative ions.

<Structure of lighting equipment>
It consists of a power supply, a socket, a lamp, a reflector, etc., which can adopt the configuration of a commonly used downlight. Light bulbs and fluorescent tubes are used as lamps. When a negative ion emission hole is provided in the reflector, a fluorescent tube is suitable. In the case of an incandescent light bulb or the like, the temperature becomes high, and an upward airflow is generated toward the hole, which is not preferable. See FIG. 4, which shows a schematic diagram of a lighting fixture.

<Installation method and location>
The device of the present invention can adopt the installation place and method as a lighting fixture like a general downlight. In general, ceiling installation, ceiling installation, suspension, wall attachment, and the like are used. In addition, it is important to maintain the cleanliness of foods, fresh foods, and delicatessen foods by taking advantage of the effects of this device, such as hygiene, cooling, deodorization, deodorization, sterilization, bacteria control, sterilization, and dust collection. It can also be incorporated into showcases, storage shelves, storages and smoking areas. It is also useful as display lighting. As a special use example, it is more effective when used in combination with a germicidal lamp or the like.
Installation locations include general rooms, offices, houses, hospitals, cars, trains, commercial facilities, recreational facilities, restaurants, restaurants, beauty and barbershops, smoking areas, fresh shops, food shops, factories, pet shops, Examples include various facilities and places such as animal hospitals, ceilings, warehouses, fresh food displays, wash basins, vanities, and toilets.

<Discharge method>
Opposite discharge electrode The main means for generating negative ions employed in the present invention is that the cylindrical electrode previously proposed by the present applicant is used as the positive electrode, and slightly outside the opening surface on the extension of the central axis of the cylindrical electrode tube. This is means for generating negative ions by silent discharge by corona discharge using an opposed discharge electrode on which a negative needle electrode is arranged. As a means for forming a cylindrical through-hole, a tunnel having a hole formed in a plate having a thickness of 3 to 30 mm can be used (see FIG. 10). When a plurality of tunnels are formed in the thick plate, it is not necessary to determine the installation positions of the plurality of positive electrodes later, so that it is easy to make a cartridge.
According to this discharge method, negative ions and a small amount of ozone are emitted from the cylindrical electrode at a wind speed of about 3 m / sec without providing a blowing means such as a fan. Further, weak ultraviolet rays are generated with the discharge from the needle electrodes. About 500,000 negative ions have been observed. This method is quiet and labor-saving without the need for a drive source such as a motor, and exhibits the effect of the combined use of negative ions and ozone.
When the cylindrical electrode is made of a material containing a photocatalyst such as titanium oxide, the photocatalyst is activated by ultraviolet rays, so that smoke elimination, deodorization, and decomposition of suspended dust can be promoted. By using a titanium alloy containing titanium oxide as an electrode material, it is possible to solve both the improvement of durability by discharge and the elimination of adsorbed dust, and the performance of the opposed discharge electrode can be sufficiently exhibited.
If a titanium-based alloy is used as the material of the needle-shaped electrode, the durability is good. The same material as the cylindrical electrode may be used.
The positional relationship between the needle electrode and the cylindrical electrode that constitute the opposed discharge electrode has a great influence on the above-mentioned generated wind, the amount of generated negative ions, and the amount of ozone. The needle-shaped electrodes are located on the axis of the cylindrical electrode, and need to be arranged at intervals several millimeters outside the opening surface. The distance d between the needle electrode and the cylindrical electrode was plotted on the horizontal axis for one pair of the opposed discharge electrodes shown in FIG. 9, and changes in the generated wind speed, ozone amount, and negative ion amount were examined. It was confirmed that the ozone amount decreased and the amount of negative ions increased when the wind speed increased, and that the wind speed drawn a parabola with a peak around 3 mm. Therefore, in order to discharge the negative ions far, the interval is required to be about 1 to 5 mm, preferably 2 to 4 mm. As a result of an experiment on the inner diameter of the cylindrical electrode, it was found that 10 to 50 mm, especially about 20 mm, was suitable.

Combination with a single needle electrode Further, a single needle negative electrode without a cylindrical electrode generates more negative ions from the single needle electrode than the counter electrode, but it releases it alone because there is no air flow. Although there is no output, by arranging it in close proximity to the opposed discharge electrode, it is possible to discharge it with the wind. In this combined method, since more negative ions can be measured than the sum of the amounts measured independently of each other, it is presumed that the synergistic effect is exhibited.
In the single needle-shaped discharge electrode, there is no directivity in the emission direction of the negative ions. Therefore, if a reflector is provided on the back surface of the single needle-shaped discharge electrode in order to concentrate on the emission hole side, the efficiency is improved.
The single needle-shaped needle electrode is made of the same material as the opposed discharge electrode, and is formed larger than the needle electrode used for the opposed discharge electrode. Both the thickness and the length are about 1 to 3 times. When a state in which a negative voltage is applied to a single-needle needle electrode used alone is observed in a dark box, a short-beam-like discharge can be observed, and a short-beam-like air discharge is generated. It is considered that negative ions are generated by this discharge. By providing a concave reflector on the back side of the single needle electrode, an increase in negative ions was observed in front of the device, and it was understood that the reflector had an effect of enhancing directivity.
FIG. 8 shows an example of a negative ion generator in which a single-needle discharge electrode and a counter discharge electrode are combined.
It comprises an opposed discharge electrode 100 for corona silent discharge, a single-needle discharge electrode 120, and a high-voltage power supply unit 103 for generating a high voltage. The opposed discharge electrode 100 includes a negative needle electrode 102 and a positive cylindrical electrode 101 provided to face the needle electrode. The high-voltage power supply unit 103 is a DC power supply, and applies a negative voltage to the needle electrode 102 and the single needle discharge electrode 120 via the cable 106, and applies a positive voltage to the cylindrical positive electrode via the cable 105. Is applied. A silent corona discharge is generated from the needle electrode 102 toward the periphery of the opening of the cylindrical electrode 101, and a short beam discharge is generated from the needle electrode 120. Air containing negative ions and a small amount of ozone is emitted from the opposite electrode 100 at a wind speed of about 3 m / sec.
The positive electrode and the negative electrode use a titanium-based alloy containing titanium oxide formed by mixing titanium oxide with titanium, and the diameter of the cylindrical positive electrode 101 is 19 mm. The distance d is set to 3 mm. The needle-shaped electrode 102 has a base diameter of 1.0 mm and a length of 13 to 14 mm, and the single needle-shaped electrode 120 has a base diameter of 1.5 mm and a length of 25 mm and is thicker and longer than a corona silent discharge electrode. Molding. A reflecting plate 121 made of aluminum was provided on the rear side of the single needle-shaped discharge electrode 120, and a safety slit was provided on the front surface. It has been confirmed by a dark box experiment that a short-beam-shaped discharge is generated from the single-needle discharge electrode 120. However, it is also confirmed that the amount of negative ions is attenuated as the distance increases, and that the directivity is weak. I have confirmed. In this example, a single needle-shaped discharge electrode and an opposed discharge electrode are used in close proximity to each other, and a concave reflector is provided on the back of the single needle-shaped discharge electrode to concentrate negative ions forward. The degree is to be raised. There was a 1.6-2.0 fold increase in the measurement of the needle tip 30 cm. The applied negative voltage was −7.5 kv at a frequency of 4 kc.
It should be noted that the configuration according to this example also applies when only the opposed discharge electrode is used as the negative ion generator.

Cartridge formation Since the negative electrode is attached to the cylindrical electrode as the positive electrode, cleaning maintenance is required. The positional relationship between the needle electrode and the cylindrical electrode needs to be accurately maintained to realize a predetermined discharge. In order to prevent this positional relationship from being changed even by attachment / detachment due to maintenance, etc., a plurality of cylindrical electrodes are collectively made into a cartridge and attached to a detachable electrode mounting plate, or a removable light source reflector By attaching to, it can be re-attached accurately. This configuration is useful for maintaining negative ion generation performance. When the positive electrode is formed as a tunnel formed by drilling a thick plate, it is advantageous to provide a plurality of the positive electrodes because positioning in the case of forming a cartridge is easy. FIG. 5A shows an example of a cartridge.

Operation of Direct Release Method Conventionally, a negative ion generator is mainly spread on a floor or a shelf with the discharge direction horizontal. In the horizontal discharge method, the negative ion density decreases as the distance from the vicinity of the discharge port decreases, and it is difficult to keep the entire room at a uniform density.The average molecular weight of air is calculated from the opposed discharge electrode previously proposed by the present applicant. As it contains larger ozone, it is considered difficult to blow in a mixed state of negative ions and ozone, and as a result of trial and error, when emitted downward from the ceiling, the attenuation rate is suppressed more than in the horizontal direction The inventors succeeded in distributing the negative ions in a state in which they were in a state of being devised.
FIG. 6 and FIG. 7 show the experimental results regarding the direct release method.
The ceiling installation test shown in FIG. 6 is as described above.
FIG. 7 is a graph in which the number of negative ions according to the distance from the discharge hole of the negative ion generator is measured. Using one counter electrode, the negative ions are released from 3.5 m higher than the normal ceiling height to just below. It is a graph of the comparative test result which used the Example, the comparative example 1 which discharged | emitted horizontally from the height of 1.4m, and the comparative example 2 which discharged | emitted the product of another company horizontally like Comparative example 1.
There are 500,000 direct discharge examples near the discharge hole. It is 1.2m to cut 400,000, 320,000 at 2.5m near normal ceiling height (36% attenuation), and 300,000 even near the floor of 3.0m-3.5m (40% attenuation). %). On the other hand, in Comparative Example 1, the number was 400,000 at 0.5 m, halved to slightly less than 250,000 at 1.0 m, less than 100,000 at 2.5 m, and gradually decreased thereafter. In Comparative Example 2, the number was about 200,000 in the vicinity of the discharge hole, and decreased in inverse proportion to 2.0 m, and almost no measurement was possible. According to this test, it can be understood that the emission rate is lower when emitted downward, and that the negative ion environment can be easily formed uniformly.
Comparing the example of the negative ion generator of FIG. 7 with the example of the negative ion generator of FIG. 6, the former attenuated by 36% just below 2.5 m, whereas the example of the plurality of electrodes of FIG. The decay rate. This indicates that the attenuation rate can be reduced by combining a plurality of opposed electrodes.
As a result of this test, as a result of measuring negative ions at a position 2.5 m away from the discharge hole corresponding to the height of the ceiling, a measurement value of 500,000 / cc near the discharge hole, and 65% ( 325 thousand pieces / cc, 35% in attenuation rate), whereas horizontal blowing results in 20% or less (100,000 pieces or less, 80% or more in attenuation rate). It was confirmed by actual measurement that the attenuation rate was smaller. Further, when a plurality of opposed discharge electrodes were arranged, the attenuation rate could be further reduced. In the example using four pieces, the attenuation rate could be suppressed to 20 to 26% in a range of 3 m in diameter just below 2.5 m.
Therefore, in a space such as a Japanese-style room, if a downlight with a negative ion generator incorporating four opposed discharge electrodes is attached to the ceiling, the entire room can be uniformly covered. In addition, even in a large space such as an office room or a conference room, the entire space can be uniformly covered by being attached to the ceiling at regular intervals. Of course, the effect can be locally enhanced by intensively arranging in a smoking area or the like. In particular, the installation of the ceiling is more effective for rising objects such as cigarette smoke.
On the other hand, since negative ions are colorless and odorless, it was difficult to clearly indicate their existence. As a result of intensive examination of this explicit method, it was found that the area substantially overlaps with the irradiation range of the downlight, and it was possible to indicate a region with a high negative ion concentration by combining with the downlight. As a result, it is also possible to specify and act on a target such as sterilization or smoke removal.

<Action>
The device of the present invention combines the air purifying action of the negative ion generator with the lighting function of the downlight by overlapping the working area of the negative ion and the lighting area of the downlight, and makes both working areas overlap with a small size. Device.
The air purifying action is as follows.
It is not necessary to use a blower such as a fan to generate the negative ions and a small amount of ozone, and it is possible to distribute the negative ions etc. in a certain range with a small attenuation rate by blowing out directly below, and the range is In this case, it is possible to realize that the target space is specified and the function is applied on an average or concentrated basis.
With this device, (1) disinfection, (2) deodorization, (3) reduction of floating dust due to plus neutralization of suspended floating dust, (4) smoke elimination, (5) adsorption and collection of dust by cylindrical electrodes Dust, (6) Decomposition of adsorbed dust by photocatalysis of titanium oxide contained in cylindrical electrode, (7) Creation of cool environment by negative ions (forest bath effect), (8) No occurrence of electromagnetic interference It exerts more effects than the negative ion generator.
In particular, a large amount of negative ions and a small amount of ozone are generated from this device, and are emitted from the cylindrical electrode by blasting without using a blowing means such as a fan, and are scattered in the air. Noise is not generated and the operation of the computer control equipment is not adversely affected, and the cylindrical electrode absorbs a part of the dust and reduces the floating dust. Even if it is embedded in a ceiling or the like, it hardly limits the use.

・ <Bactericidal action>
Strongly disinfects bacteria by the synergistic effect of negative ions and trace amounts of ozone, and also exerts an effect on O-157, which causes food poisoning. The bactericidal performance was confirmed in the test results of the growth test of Escherichia coli and blue mold.

・ <Deodorizing action>
Smell and tobacco odor are fine particles that float in the air and adhere to everywhere. Trace amounts of ozone and negative ions can quickly decompose odor components and remove odors. Using a downlight with a negative ion generator, a typical toilet odor removal test was performed. Ammonia and formaldehyde are halved in 20 minutes, formaldehyde is eliminated in 60 minutes, and ammonia is reduced to almost 20%, confirming that it is effective in deodorizing. Good results were also observed in the deodorization test of animal breeding rooms such as monkeys, dogs, and ferrets.

・ <Dust collection and smoke removal>
It can collect and deodorize carbon monoxide, dust particles of chile and tobacco smoke floating in the air, and harmful fine particles that cause hay fever and allergies up to 0.001 micron.
In the test for reducing the amount of suspended dust, the filter method requires half an hour, while the filter method requires half an hour, and the filter method requires 70 minutes after 30 minutes, whereas the filter method requires 60 minutes. However, a 70% reduction has not been achieved. In this device, as a result of a test using uncharged dust, when the dust comes into contact with negative ions, the dust is charged with negative ions, and is adsorbed to the positive side, floating dust is reduced, and air is reduced. It has been observed that the dust has been cleaned and a large amount of dust has adhered to the lower part of the room, such as the floor, outside the cylindrical electrode.

・ <Hygiene, cooling effect>
With low concentration ozone, hygiene management and photocatalytic reaction can be expected for health management and forest bathing effect due to a large amount of negative ion effect, and enjoyment of fresh and healthy life is promoted. Safe living environment can be provided by sterilization + deodorization + dust collection + smoke removal. As a result of making an air purifying activator incorporating four opposed discharge electrodes in the ward and confirming its usefulness, the number of observed bacteria that fell before and after the installation was reduced from 18% to 58%, and decreased to an average of 38%. , Has confirmed its usefulness. The air purifying activator of the present invention can be expected to be more effective because the amount and range of release of negative ions are expanded. Keeping the room air as normal as possible is one of the important infection prevention measures.
In summary, (1) sanitization, (2) deodorization, (3) reduction of suspended dust due to the plus neutralization of suspended suspended dust, (4) smoke elimination, (5) adsorption and collection of dust by cylindrical electrodes (6) decomposition of adsorbed dust by the photocatalytic action of titanium oxide contained in the tubular electrode; (7) creation of a cool environment by negative ions (forest bath effect); (8) no electromagnetic interference; (9) fan Since it is not used, the effect such as low cost, small size and light weight can be released from directly below the ceiling, so that it can work evenly.
The downlight with a negative ion generator of the present invention is not particularly limited in use, but it is used in general rooms, hospitals, cars, trains, commercial facilities, recreational facilities, restaurants, restaurants, beauty and barber shops, smoking. Examples include various facilities and places such as a place, a fresh section, a food section, a factory, a pet shop, an animal hospital, a ceiling, a warehouse, and the like.

The present embodiment is an example of a ceiling embedded type.
FIG. 1 is a schematic sectional view of a downlight with a negative ion generator in which a fluorescent tube as a light source and four opposed discharge electrodes on the side thereof are arranged in one row. FIG. 2A is a plan view thereof, in which four opposed discharge electrodes are arranged in one line on one side of the light source. FIG. 2B is a plan view illustrating an example in which the light source is arranged around the light source. The arrangement relationship and the number of the light sources and the negative ion generators can be appropriately determined in consideration of the design and the like. Further, a negative ion emission hole can be provided in the reflection shade of the light source. In that case, the size of the entire apparatus can be reduced. FIG. 3 shows a housing. FIG. 4 shows a lighting fixture. FIG. 5A shows an example in which the opposite discharge electrode of the negative ion generator B is configured in a cartridge. FIG. 5B is a schematic view of an example in which a negative ion generator is attached to a reflector of a lighting fixture.

  FIG. 1 is a schematic cross-sectional view of a downlight C with a negative ion generator of the present embodiment embedded in an opening 51 of a ceiling 50. The downlight C with a negative ion generator includes an illuminator B and a negative ion generator A, and is housed in the housing 1. Electric power is supplied to the illuminator B and the negative ion generator A via the power cord 9, and the illuminator B and the negative ion generator A are adjusted to the required frequency and voltage for use. In this example, the ceiling 1 is fixed to the ceiling 50 by inserting the housing 1 into the ceiling opening 51 and holding the ceiling plate between the mounting spring 11 and the ceiling contact piece 12. An exterior plate 30 having an illumination opening and a negative ion emission hole is provided on the ceiling surface side.

  FIG. 2A is a plan view thereof, in which four opposed discharge electrodes are arranged in one line on one side of the light source. The lamp 201 can be seen through the exterior plate 30 provided with the illumination opening 205 and the four negative ion emission holes 136 and the illumination opening 205. In this example, a configuration is adopted in which the cartridge 130 of the opposed discharge electrode is detachably attached to the exterior plate 30 from the surface. Thereby, maintenance can be performed by attaching and detaching only the opposed discharge electrodes. However, when the cartridge 130 is mounted on the back surface of the outer plate 30, maintenance can be performed by making the cartridge 130 and the outer plate 30 detachable. In that case, the degree of freedom of the design of the exterior plate is improved.

  FIG. 3 shows the housing 1 that houses the illuminator B and the negative ion generator A. The housing 1 has a lower surface opened as a housing lower surface opening 140, and the opening edge extends outward to form a ceiling contact piece 12. At the lower part of the outer side surface of the housing, a mounting spring 11 that sandwiches the ceiling plate is provided so as to face the ceiling contact piece 12. A power cord 21 for supplying power to an external power supply, an illuminator B, and a negative ion generator A are provided at an upper portion of the housing 1. In this example, the power supply outlet and the power cord are attached to the upper part, but the present invention is not limited to this, and it may be on the side. For attachment to the ceiling, a means for inserting a downlight C with a negative ion generator into the ceiling opening, holding the ceiling plate between the attachment spring 11 and the ceiling contact piece 12 and pressing and fixing the ceiling plate is employed in this example.

  FIG. 4 shows a lighting fixture. A power supply 204 incorporating a lighting circuit and a transformer, a socket 203 for mounting the light-emitting source 201, and a reflector 202 for reflecting light from the light-emitting source downward are provided. In this example, a fluorescent lamp is employed as a light source. In addition, although the reflection shade 202 is integrally shown as an exterior body of the illuminator B, it can be appropriately separated such as a reflection function portion and other portions.

FIG. 5A shows an example in which the opposite discharge electrode of the negative ion generator B is configured in a cartridge.
In the cartridge 130, an opening for discharging negative ions is formed in the discharge electrode mounting plate 131, the cylindrical electrode 101 is mounted on the opening, and the needle electrode 102 is determined at a position opposite to the cylindrical electrode 101 from 1.0 to 5.0 mm. , 102 are connected and fixed to a needle-like electrode mounting plate 133 via a needle-like electrode mounting body 134 so that the needle-like electrodes 102... The plate 133 and the discharge electrode mounting plate 131 are connected to each other via the connecting support 132 to form a cartridge 130 that keeps the facing relationship between the needle electrode 102 and the cylindrical electrode 101 constant. The cartridge is provided with a cable 134 for supplying a positive charge to the cylindrical electrode 101, a positive electrode terminal 137 as a connection terminal thereof, and a cable 135 for supplying a negative charge to the needle electrode 102. . The attachment / detachment of the cartridge 130 and the connection of the power supply terminal can employ a means such as a plug connection at a predetermined position or a pressure contact with a spring-like terminal. The distance between the opening of the cylindrical electrode and the tip of the needle electrode is 1.0 to 5.0 mm, preferably about 3 mm. The cartridge 130 is made detachable with respect to the exterior plate or the housing 1, and even when the cartridge 130 is attached or detached for maintenance or the like, the position where the cylindrical electrode and the needle electrode face each other is accurately maintained, and the performance is maintained.

FIG. 5B shows another example, in which the opposite discharge electrode 110 is attached to the reflection shade 202, and the reflection shade is also used as a cartridge. In this case, since it is necessary to make the reflection shade 202 detachable, the reflection shade connection part 206 formed by screwing or the like is formed.
Further, since the negative ions themselves are colorless and odorless for the negative ion generator B, it is also possible to provide an operation display LED indicating an operation state or a power switch that can be manually operated.

Schematic sectional view of a downlight with a negative ion generator of the present embodiment FIG. 1 is a plan view of the downlight with a negative ion generator according to the embodiment shown in FIG. 1. Plan view of an example placed around a light source Sectional view of the housing of this embodiment Sectional view of the lighting fixture of the present embodiment Perspective view of cartridge with opposed discharge electrodes Schematic diagram of an example of attaching a negative ion generator to the reflector of a lighting fixture Observation diagram of negative ions depending on the blowout direction right below Negative ion observation diagram of an air cleaning activator incorporating four opposed discharge electrodes Schematic diagram of equipment arrangement in which counter electrode and single needle electrode are used together Opposite discharge electrode Example of a positive electrode with holes in a thick plate

Explanation of reference numerals

A Negative ion generator B Illuminator C Downlight with mines ion generator 1 Housing 2 Power supply outlet 3 Reflector shade 11 Mounting spring 12 Ceiling abutment piece 21 Power cord 30 Exterior plate 40 Housing bottom opening 50 Ceiling 51 Ceiling opening REFERENCE SIGNS LIST 100 Counter discharge electrode 101 Cylindrical electrode 102 Needle electrode 103 High voltage unit 104 Negative electrode end 105 Cable 106 Cable 107 Positive electrode end 120 Single needle discharge electrode 121 Reflector 130 Cartridge 131 Discharge electrode mounting plate 132 Coupling support 133 Needle electrode Mounting plate 134 Cable (plus)
135 cable (minus)
136 Negative ion emission hole 137 Positive electrode terminal 138 Needle electrode mounting body 201 Light emitting source (lamp)
202 Reflector shade 203 Socket 204 Power supply 205 Illumination aperture 206 Reflector shade connection

Claims (12)

A downlight equipped with a light source and a negative ion source,
A negative ion source is configured by disposing a cylindrical electrode and a needle electrode to face each other to form an opposed discharge electrode, and applying a high DC voltage with the needle electrode as a negative electrode and the cylindrical electrode as a positive electrode. A downlight with a negative ion generator, which is a negative ion generator that emits a wind containing negative ions.   2. A negative ion generator according to claim 1, further comprising a reflector which reflects light from a light source in at least a lower opening of the housing, and a negative ion generator between the reflector and the side plate of the housing. Downlight with bowl.   A reflection shade for reflecting light of a light source is provided in a housing having an opening at least below, a transmission hole for negative ion wind is provided in the reflection shade, and the reflection shade is detachably attached from below. A downlight with a negative ion generator according to 1.   The downlight with a negative ion generator according to any one of claims 1 to 3, wherein an illumination range and a negative ion emission range are overlapped.   The downlight with a negative ion generator according to any one of claims 1 to 4, wherein the negative ion generator is configured by combining an opposed discharge electrode and a single-needle discharge electrode serving as a negative electrode.   The downlight with a negative ion generator according to any one of claims 1 to 5, wherein a germicidal lamp is used as a light source.   At least in the lower opening of the housing opened at the bottom, an exterior plate body having an opening for light and a hole for sending out negative ion wind is mounted, and a discharge electrode mounting body having a discharge electrode mounted on the exterior plate body is viewed from below. The downlight with a negative ion generator according to any one of claims 1 to 6, wherein the downlight is detachably mounted.   The negative electrode generator according to any one of claims 1 to 7, wherein the tubular electrode is a tunnel formed by providing a through hole in a tubular or thick plate having a thickness of 3 to 30 mm. Downlight.   The needle-shaped electrode and / or the single needle-shaped electrode are made of titanium or a titanium-based material, and the cylindrical electrode is an electrode material containing a photocatalyst such as titanium oxide. Downlight with negative ion generator.   The needle electrode of the opposed discharge electrode is located on an extension of the axis of the tube of the cylindrical electrode, and is arranged at a distance of 1 to 5 mm, preferably 2 to 3 mm from the opening surface. The downlight with a negative ion generator according to any one of claims 9 to 9.   The negative ion according to any one of claims 1 to 10, wherein negative ions are released from the single needle electrode, and negative ions and a small amount of ozone are released from the opposed discharge electrode by corona discharge. Downlight with generator.   The downlight with a negative ion generator according to any one of claims 1 to 11, wherein a plurality of opposed discharge electrodes are provided.