JP3999207B2 - Downlight with negative ion generator - Google Patents

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 air blowing means.

  As a method for generating negative ions electrically, a corona discharge method or a single needle method is employed. The corona discharge method can be broadly divided into needle shape and ionization line, but the applicant has already filed a corona discharge method that combines a negative needle electrode and a positive cylindrical electrode as a counter electrode. (Patent Document 1) Japanese Patent No. 3017146) By forming the counter electrode into a cylindrical shape as seen in the products being implemented, it has a clear electronic wind and has a dust collection capability, so it is fanless. It is also used as a type of air purifier.

The single-needle method is often used in products that are sold at a relatively low price range as a product that is in line with the trend of the negative ion boom in recent years. Negative ions are generated by applying a voltage, and there is almost no electron wind. This is a mechanism for releasing electrons into the air by the force of voltage. There exists patent document 2 (Unexamined-Japanese-Patent No. 2001-321661) as an example of a single needle system. It is sold with a fan installed or its generating unit built into an air conditioner or fan.
Japanese Patent No. 3017146 JP 2001-321661 A

These air purifiers with the release of negative ions were of the floor type or the type installed at a high place such as on a shelf.
The present applicant has found that when negative ions are released downward from a cylindrical electrode that does not require a blowing means such as a fan, the attenuation rate of negative ions due to the discharge distance is small, and the negative ions are released from the ceiling toward the floor. The invention for making the negative ion environment uniform has already been filed (Japanese Patent Application No. 2003-425842).
Since the negative ions are colorless and odorless, it is difficult to confirm the presence of the negative ions even if the negative ion generator is installed indoors.
The present invention provides a device in which a negative ion emission device is incorporated into a downlight, which is a highly directional lighting fixture, so that the illumination region and the negative ion emission region are overlapped to clarify the working range of both. It is.

This is a downlight equipped with a light source and a fanless negative ion generator. The present invention has variations using the following means.
(1) A downlight equipped with a light-emitting source and a fanless type negative ion generation source, wherein the fanless type negative ion generation source has a cylindrical electrode and a needle electrode facing each other, and a counter discharge electrode configure, the needle electrode negative electrode, by applying a high voltage of direct current tubular electrodes as the positive electrode, I negative ion generator der to release the air including negative ions, the opposing discharge electrode needle The cylindrical electrode is located on the axial extension of the cylindrical electrode, and is spaced from the opening by 1 to 5 mm. The negative ion emission aperture direction of the cylindrical electrode is the irradiation direction of the light source. The downlight with negative ion generator is characterized by overlapping the illumination range of the downlight with the negative ion emission range .
(2) The reflection ion shade which reflects the light of the light source in the case opened at least below, and the negative ion generation source is arranged between the reflection shade and the side plate of the case. Downlight with negative ion generator.
(3) A reflection shade that reflects light from a light source is provided in a housing that is open at least below, a negative ion wind-out hole is provided in the reflection shade, and the reflection shade is detachably mounted from below. The downlight with a negative ion generator according to any one of (1) and (2) .
(4) The negative ion generation source according to any one of (1) to (3), wherein the negative ion generation source is configured by combining a counter discharge electrode and a single needle discharge electrode as a negative electrode. Downlight with instrument.
(5) The downlight with a negative ion generator according to any one of (1) to (4), wherein a sterilization basket is used as a light emitting source.
(6) A discharge electrode mounting body in which an exterior plate body in which an opening for light and a negative ion wind sending hole are formed is mounted at least in a lower opening of a housing having an opening on the lower side, and the discharge electrode is mounted on the exterior plate body The downlight with a negative ion generator according to any one of (1) to (5) , characterized in that is attached detachably from below.
(7) The cylinder of the cylindrical electrode is a tunnel formed by providing a through hole in a cylindrical shape or a thick plate having a thickness of 3 to 30 mm, according to any one of (1) to (6) Downlight with negative ion generator.
(8) The needle-like electrode and / or single needle-like 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. (1) to (7) A downlight with a negative ion generator according to any one of the above.
(9) opposed discharge electrodes needle electrode of is located on the axis extending in the tubular cylindrical electrode, characterized in that it is spaced apart a distance of 2~3mm from the opening face (1) - ( The downlight with a negative ion generator according to any one of 8) .
(10) The downlight with a negative ion generator according to any one of (1) to (9) , wherein negative ions and a small amount of ozone are released from the counter discharge electrode by corona discharge.
(11) The downlight with a negative ion generator according to any one of (1) to (10), wherein a plurality of counter discharge electrodes are provided.

(1) Overlapping the illumination range of the downlight and the negative ion emission range, it was possible to clarify the effect of both.
(2) By combining the characteristics of a downlight with small spotlight illumination and a small negative ion generator that does not require a fan, the negative ion atmosphere in the spotlight illumination range can be achieved without losing the small characteristics. Since it can be realized with a uniform density, a negative ion environment can be specified by the illumination range.
(3) The illumination range of the downlight with a ceiling of 2.5 to 3 m has a large diameter of 2 to 5.5 m and a high density range of negative ions emitted from the counter discharge electrode used in the present invention. Since the diameter is 3 to 5 m, both can be overlapped.
(4) When the light source and the negative ion delivery hole are 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 reflection shade of the light source, it is not necessary to change the outer shape of the downlight. In this case, the negative ion generator can be easily maintained by attaching the reflective shade detachably from below.
(6) Since no air blowing means such as a fan is used, it is quiet and energy saving.
(7) The negative ion generation amount can be increased by combining a counter discharge electrode and a single needle-shaped (120) discharge electrode as a negative electrode as a negative ion generation source.
(8) When a sterilization basket is used as the luminescence source, a bactericidal effect and a sterilization effect can be achieved by a synergistic effect with negative ions and an ozone action effect.
(9) By detachably mounting the discharge electrode mounting body on the outermost side, it is possible to facilitate maintenance such as cleaning such as removal of dust attached to the inside of the cylinder which is the positive electrode.
(10) By mounting the discharge electrode mounting body on which the discharge electrode is mounted, it is possible to attach and detach without changing the arrangement relationship between the negative electrode and the positive electrode constituting the discharge electrode. It is possible to supply products with high reliability that can be maintained.
(11) The needle-like electrode and / or single needle-like electrode is made of titanium or a titanium-based material, and the cylindrical electrode uses a titanium-based electrode material containing a titanium oxide photocatalyst, thereby increasing durability and the amount of negative ions generated. Can be made. Further, the dust adsorbed on the positive electrode can be decomposed by the action of the photocatalyst, the dust floating in the room can be reduced, and the use time of the positive electrode can be extended.
(12) The needle-like electrode of the counter discharge electrode is positioned on the axial extension of the cylinder of the cylindrical electrode, and is arranged at a distance of 1 to 5 mm, preferably 2 to 3 mm from the opening surface. A small amount of ozone can be released.
(13) Negative ions are released from the single needle-like electrode, and negative ions and a small amount of ozone are released from the counter electrode by corona discharge, and more weak ultraviolet light can be emitted from the needle-like electrode.
(14) When a plurality of counter-discharge electrodes are provided, the negative ion attenuation rate can be suppressed as compared with the case of using one counter electrode.
(15) Since it is a ceiling-mounted type or a suspended type, this apparatus can be installed at regular intervals, and the distribution of negative ions and the like can be made uniform from a narrow room to a wide room.
(16) This device can synergistically exert effects such as sterilization, sterilization, deodorization, and smoke removal by using negative ions and a small amount of ozone in combination.
(17) This device generates weak ultraviolet light, and the decomposition of substances that rise upward, such as odor molecules, smoke particles, and dust particles, is promoted by the photocatalytic action of the titanium oxide of the cylindrical electrode.
(18) Although the use of this device is not particularly limited, it can be used in general rooms, hospitals, cars, trains, commercial facilities, entertainment facilities, restaurants, restaurants, beauty and barbershops, smoking areas, fresh food stores, Examples include food departments, factories, pet shops, animal hospitals, ceilings, warehouses, various facilities and locations, fresh food displays, washstands and vanities.
(19) The device provided by the present invention is also a downlight illumination device with an air purifier function.

In the present invention, the air containing negative ions and a small amount of ozone is blown out directly from the generator, so that the attenuation of the amount of negative ions and ozone in a certain range of space directly below is much smaller than that of blowing out horizontally. And created a negative ion generator with the emission hole facing down, and built it into a downlight luminaire. See FIG. 1 and FIG.
The negative ion generator employed in the present invention generates a small amount of ozone other than negative ions, and suspended dust or smoke that has come into contact with the negative ions sinks to the floor surface or adheres to a cylinder that is a positive electrode. A weak ultraviolet ray is emitted from the acicular electrode as an electrode, and dust and bacteria are decomposed by the action of the photocatalyst contained in the positive electrode material, so that the effect of purifying the air is exhibited.
Moreover, since it has been confirmed that the attenuation rate can be further reduced by providing a plurality of negative ion generators rather than one, the air cleaning function can be improved by installing a plurality of negative ion generators.
Furthermore, focusing on the fact that the combined use of a single needle-shaped discharge electrode can further increase the amount of negative ions released, it is possible to improve the air cleaning function by combining a single needle-shaped discharge electrode. It can be done.
And as for the downlight lighting fixture, the irradiation range in the distance of 2.5-3m which is normal ceiling height is about 2-5.5m in diameter. This irradiation range is a range that overlaps with a range where the negative ion density is high when emitted from a cylinder of a positive electrode such as a cylinder employed in the present invention directly downward. Since negative ions are colorless and odorless, it was difficult to specify the range of negative ions specifically, but by combining them, the range of high negative ion density is specified by the illumination range. It is possible to do that.
FIG. 6 schematically shows the state of the negative ion and light irradiation test from the ceiling.

<Ceiling installation test>
FIG. 6 shows a situation in which a downlight with a negative ion generator in which four counter discharge electrodes are mounted is embedded in a 2.5 m ceiling. Near the discharge hole, negative ions of 500,000 electrodes / electrode are measured at a wind speed of about 3 m / second, and on the floor surface, negative ions of 370,000 to 400,000 ions / electrode in a diameter of 3.5 m are measured. Ions were measured. The attenuation rate is 20 to 26%. The rate of loss was defined as the attenuation rate. In this case, for example, 100% −370,000 / 500,000 × 100% = 26%.
The 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 commercially available downlights is about 44 to 84 degrees, and in many cases, the irradiation range is 2 to 5 m in diameter at a distance of 2.5 m.

<Container>
The downlight with a negative ion generator includes a light source for illumination and a discharge electrode that generates negative ions and the like, and a power source, wiring, and a mounting tool are incorporated in the container.
The container is constituted by a housing having an opening at least below, a socket for mounting a light source such as a light bulb, a reflective shade surrounding the light source, and a discharge electrode mounting body for supporting a negative ion generating electrode that is detachably mounted from below. In addition, each power supply is incorporated.
Since the cylindrical electrode of the counter-discharge electrode employed in the present invention needs to perform cleaning maintenance accompanying dust collection, it is necessary to have a configuration that ensures the ease of this maintenance. For this reason, in a downlight that is often embedded in the ceiling, it is advantageous to detachably mount the discharge electrode from the lower surface while the ceiling is attached. When the discharge electrode is attached to an independent attachment body, the attachment body is detachable from below, and when the discharge electrode is attached to the reflection shade, the reflection shade is detachable from below.
In the counter discharge electrode for silent corona discharge employed in the present invention, it is important to maintain the positional relationship between the needle electrode and the positive electrode to maintain the performance, and this relationship is disturbed when the electrode is attached and detached. It is necessary to devise so that there is no. The needle electrode can be attached to the housing side or the front mounting plate side as long as the needle electrode and the cylindrical electrode (tunnel) can be kept in a predetermined arrangement. However, when a ceiling plate or the like is interposed between the housing opening and the front mounting plate, the arrangement relationship between the cylindrical electrode (tunnel) and the needle electrode is the ceiling plate, so it is possible to keep the predetermined positional relationship. Since it is difficult, attaching a cylindrical (tunnel) electrode and a needle electrode on the discharge electrode mounting plate side is suitable for exhibiting a predetermined performance.
When a plurality of counter-discharge electrodes are used, if these are integrated into a cartridge, it is useful for maintaining a predetermined relationship between the mounting and dismounting operation and the positional relationship for mounting on the discharge electrode mounting plate and maintenance.
The number of the light sources and the negative ion generators arranged and the positional relationship are not particularly specified. There is no restriction such as arranging on one side of the light source or evenly arranging an arbitrary number around. In addition, it is possible to expose the negative ion emission hole or to provide a reflection shade so that it is difficult to see directly. However, when an emission hole is provided in the reflective shade, it is preferable to use a fluorescent lamp because air heated by an incandescent bulb or the like may flow backward and hinder the release of negative ions.

<Configuration of lighting fixture>
It is possible to adopt the structure of a downlight that is usually used. A light bulb or a fluorescent tube is used as the lamp. When a negative ion emission hole is provided in the reflecting shade, a fluorescent tube is suitable, and in the case of an incandescent lamp or the like, the temperature becomes high and an upward air flow is generated toward the hole, which is not preferable. See FIG. 4, which shows a schematic diagram of the luminaire.

<Installation method / location>
The apparatus of the present invention can employ an installation place and method as a lighting fixture in the same manner as a general downlight. In general, ceiling embedding, ceiling mounting, hanging, wall mounting, etc. In addition, it is important to maintain the cleanliness of food, fresh foods, prepared dishes, etc., by taking advantage of the effects of hygiene, cooling, deodorization, smoke removal, sterilization, sterilization, sterilization, dust collection, etc. It can also be incorporated into showcases, storage shelves, storage rooms and smoking areas. It is also useful as display illumination. As a special use example, it is more effective when used in combination with a sterilizer.
Installation locations include general rooms, offices, houses, hospitals, cars, trains, commercial facilities, entertainment facilities, restaurants, restaurants, beauty and barbershops, smoking areas, fresh food stores, food stores, factories, pet shops, Examples include various facilities / parts such as animal hospitals, ceilings, warehouses, fresh food displays, washstands, vanities, and toilets.

<Discharge method>
Counter discharge electrode The main means for generating negative ions employed in the present invention is the cylindrical electrode previously proposed by the present applicant as the positive electrode, and on the extension line of the central axis of the cylindrical electrode, slightly outside the opening surface. This is means for generating negative ions by silent discharge by corona discharge using a counter discharge electrode on which a negative needle electrode is arranged. As a means for forming a cylindrical through hole, a tunnel having a hole in a 3 to 30 mm thick plate can be used (see FIG. 10). When a plurality of tunnels are formed on 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 released from the cylindrical electrode at a wind speed of about 3 m / s without providing a blowing means such as a fan. Furthermore, weak ultraviolet rays are generated with the discharge from the needle electrodes. About 500,000 negative ions have been observed. This method is quiet because it does not require a driving source such as a motor, is labor-saving, and exhibits the effect of combined use of negative ions and ozone.
By forming the cylindrical electrode with a material containing a photocatalyst such as titanium oxide, the photocatalyst is activated by ultraviolet rays, and it is possible to promote smoke removal, deodorization, decomposition of floating dust, and the like. By using a titanium alloy containing titanium oxide as an electrode material, both improvement in durability due to discharge and elimination of adsorbed dust can be solved, and the performance of the counter discharge electrode can be sufficiently exhibited.
Use of a titanium-based alloy as the material for the needle-like electrode provides good durability. The same material as the cylindrical electrode may be used.
The arrangement relationship between the needle electrode and the cylindrical electrode constituting the counter discharge electrode has a great influence on the above-described wind force generation, the amount of negative ions generated, and the amount of ozone. The needle-like electrode is an extension of the axis of the cylindrical electrode, and needs to be arranged with a gap several millimeters outside the opening surface. The distance d between the needle electrode and the cylindrical electrode is plotted on the horizontal axis for one pair of counter discharge electrodes shown in FIG. 9, and changes in the generated wind speed, ozone amount, and negative ion amount are investigated. As a result, in this corona discharge method, the distance d It was confirmed that the amount of generated ozone decreased, the amount of negative ions increased, and the wind speed peaked at around 3 mm. Therefore, in order to release negative ions far away, the interval needs to be about 1 to 5 mm, preferably 2 to 4 mm. As a result of experiments on the inner diameter of the cylindrical electrode, it was found that 10 to 50 mm and particularly about 20 mm are suitable.

Combination with a single needle electrode In addition, a single needle negative electrode without a cylindrical electrode generates more negative ions from a single needle electrode than a counter electrode, but it has no blowing power, so it can be released alone. Although there is no output, it can discharge | release on the ventilation force by arrange | positioning close to the said counter discharge electrode. In this combined method, since more negative ions can be measured than the sum of the amounts measured independently, it is presumed that a synergistic effect is exhibited.
The single needle discharge electrode has no directivity in the negative ion emission direction. Therefore, in order to concentrate on the emission hole side, if a reflector is provided on the back surface of the single needle discharge electrode, the efficiency increases.
The single needle-like electrode is made of the same material as the counter discharge electrode, and is formed larger than the needle electrode used for the counter discharge electrode. Both thickness and length are about 1 to 3 times. When a negative voltage is applied to a single needle-like electrode used alone 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 reflecting plate on the back side of the single needle-like electrode, an increase in negative ions was observed in front of the apparatus, and it was understood that the reflecting plate has an effect of enhancing directivity.
An example of a negative ion generator in which a single needle-like discharge electrode and a counter discharge electrode are combined is shown in FIG.
It is composed of a counter discharge electrode 100 for silent corona discharge, a single needle discharge electrode 120, and a high voltage power supply unit 103 for generating a high voltage. The counter 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 direct current power source, and applies a negative voltage to the needle electrode 102 and the single needle discharge electrode 120 via the cable 106, and the positive voltage to the cylindrical positive electrode via the cable 105. Apply. Silent corona discharge is generated from the needle electrode 102 toward the periphery of the opening of the cylindrical electrode 101, and short beam discharge is generated from the needle electrode 120. From the counter electrode 100, air containing negative ions and a small amount of ozone is emitted at a wind speed of about 3 m / sec.
The positive electrode and the negative electrode are made of a titanium alloy containing titanium oxide formed by mixing titanium oxide with titanium, the diameter of the cylindrical positive electrode 101 is 19 mm, and the needle-shaped negative electrode 102 and the cylindrical electrode 101 are The interval d is set to 3 mm. The needle electrode 102 has a base diameter of 1.0 mm and a length of 13 to 14 mm, and the single needle electrode 120 has a base diameter of 1.5 mm and a length of 25 mm, and the single needle shape is thicker and longer than an electrode for silent discharge. Molding. An aluminum reflector 121 is provided on the rear side of the single needle-shaped discharge electrode 120, and a safety slit is provided on the front surface. It has been confirmed by a dark box experiment that a short beam-like discharge is generated from the single needle-shaped discharge electrode 120, but the amount of negative ions is also confirmed to attenuate with increasing distance, and the directivity is weak. I have confirmed. In this example, a single needle-shaped discharge electrode and a counter-discharge electrode are arranged in close proximity and used together, 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 increased. In the measurement of the tip of the needle 30 cm, there was an increase of 1.6 to 2.0 times. The negative voltage applied was minus 7.5 kv at a frequency of 4 kc.
In addition, when using only a counter discharge electrode as a negative ion generator, it is the structure according to this example.

Cartridge The cylindrical electrode, which is the positive electrode, needs to be cleaned and maintained because negatively charged dust adheres to it. The positional relationship between the needle electrode and the cylindrical electrode needs to be accurately maintained in order to realize a predetermined discharge. In order to prevent this positional relationship from being changed by attachment / detachment due to maintenance, etc., a plurality of cylindrical electrodes are put together into a cartridge and mounted on a removable discharge electrode mounting plate, or a light source reflector shade that is removable. It can be reattached correctly by attaching to the. This configuration is useful for maintaining the negative ion generation performance. In the case of a tunnel in which a positive electrode is formed in a thick plate, it is advantageous to provide a plurality of positive electrodes because it is easy to position in the case of a cartridge. FIG. 5A shows an example of a cartridge.

Action of direct emission method Conventionally, the negative ion generator is mainly diffused with the emission direction horizontal on a floor or a shelf. In the horizontal discharge method, the negative ion density decreases with increasing distance from the vicinity of the discharge port, and it is difficult to keep the entire room at a uniform density. From the counter discharge electrode previously proposed by the applicant, the average molecular weight of air Since larger ozone is contained, it is considered that it is difficult to blow in a mixed state of negative ions and ozone, and as a result of trial and error, it was released from the ceiling directly below. In this state, negative ions can be distributed, and the present invention has been made.
FIG. 6 and FIG. 7 show the experimental results relating to the direct discharge 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 is measured according to the distance from the discharge hole of the negative ion generator, and a single counter electrode is used to discharge from 3.5 m higher than the normal ceiling height. It is a graph of the comparative test result using the comparative example 1 which discharge | released the example and the comparative example 1 horizontally from the height of 1.4 m, and the comparative example 2 which discharge | released the product of the other company horizontally similarly to the comparative example 1.
There are 500,000 direct discharge examples near the discharge hole. It is 1.2m to cut 400,000 pieces, 320,000 pieces (attenuation rate 36%) at 2.5m near the normal ceiling height, and 300,000 pieces (attenuation rate 40) near the floor of 3.0m to 3.5m. %). On the other hand, in Comparative Example 1, the number is 400,000 at 0.5 m, halved to a little less than 250,000 at 1.0 m, less than 100,000 at 2.5 m, and gradually decreasing thereafter. In Comparative Example 2, the number was about 200,000 near the discharge hole, and decreased in an inverse proportion to 2.0 m, so that it was almost impossible to measure. From this test, it can be seen that the emission rate is lower and the decay rate is smaller, making it easier to create a negative ion environment 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 was attenuated by 36% immediately below 2.5 m, but the example of the plurality of electrodes of FIG. It was a decay rate. This indicates that the attenuation rate can be reduced by combining a plurality of counter 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, which corresponds to the height of the ceiling, a measurement value of 500,000 / cc in the vicinity of the discharge hole is 65% ( 325,000 / cc, 35% attenuation rate), while horizontal blowout results in 20% or less (100,000 pieces or less, attenuation rate 80% or more). It was confirmed by actual measurement that the attenuation rate was smaller. Furthermore, when a plurality of counter discharge electrodes are arranged, the attenuation rate can be further reduced. In the example using four, the attenuation factor could be suppressed to 20 to 26% in a range of 3 m in diameter immediately below 2.5 m.
Therefore, in a space such as a Japanese-style room, if the downlight with a negative ion generator incorporating four counter 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 attaching the ceiling to the ceiling with a certain interval. Of course, it can be concentrated in a smoking area to enhance the effect locally. In particular, for a rising object such as cigarette smoke, the ceiling installation is more effective.
On the other hand, since the negative ions are colorless and odorless, it is difficult to clearly indicate their presence. As a result of diligent examination of this clarification method, it was found that it overlapped with the irradiation range of the downlight, and by combining with the downlight, it became possible to show a region having a high negative ion concentration. As a result, it is possible to specify and act on an object such as sterilization or smoke removal.

<Action>
The apparatus of the present invention combines the negative ion generator air-cleaning action and the downlight illumination function by overlapping the negative ion action area and the downlight illumination area, and is compact and overlaps both action areas. Device.
The air cleaning action is as follows.
It is not necessary to use a blower such as a fan for the generated negative ions and a small amount of ozone, and by blowing out in the direct downward direction, it is possible to distribute negative ions etc. in a certain range with a small attenuation rate. It is possible to realize an exact action by averaging or concentrating by clearly specifying the target space.
With this device, (1) sterilization, (2) deodorization, (3) reduction of suspended dust due to neutralization and subsidence of unloading suspended dust, (4) smoke extinguishing, and (5) dust collection by the cylindrical electrode Dust, (6) decomposition of adsorbed dust by photocatalytic action of titanium oxide contained in the cylindrical electrode, (7) creation of a refreshing environment by negative ions (forest bath effect), (8) no electromagnetic interference, etc. The effect is more than that of the negative ion generator.
In particular, this device generates a large amount of negative ions and a small amount of ozone, and is emitted from a cylindrical electrode by a wind without using a blowing means such as a fan. No noise is generated and there is little adverse effect on the operation of computer control equipment, and the cylindrical electrode absorbs part of the dust and reduces suspended dust. Even if it is embedded in the ceiling, there are few restrictions on the application.

・ <Bactericidal action>
It is powerfully sterilized by the synergistic effect of negative ions and trace amounts of ozone, and is effective for O-157, which causes food poisoning. Bactericidal performance could be confirmed in the test results of the growth test of E. coli and green mold.

・ <Deodorizing action>
The odor and cigarette odor are fine particles that float in the air and adhere everywhere. Trace amounts of ozone and negative ions can quickly decompose odorous components and remove odors. Using a downlight with a negative ion generator, a typical toilet deodorization test was conducted. 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 for deodorization. Good results were also observed in deodorization tests in animal rooms such as monkeys, dogs and ferrets.

・ <Dust collection and smoke eliminating action>
It can collect dust and smoke completely up to 0.001 micron in harmful particles which cause carbon monoxide and pollinosis and allergies of dust and tobacco smoke floating in the air.
In the airborne dust reduction test, the filter method takes half an hour in 10 minutes, whereas the filter method requires 30 minutes. After 30 minutes, the filter method decreases by 70%, whereas in the filter method, 60 minutes have passed. However, the reduction of 70% has not been achieved. In this equipment, as a result of testing using dust that has no electric charge, when negative ions are contacted, negative ions are charged to the dust, adsorbed on the positive side, airborne dust is reduced, and air is It has been observed that a large amount of dust adheres to the outside of the cylindrical electrode and the lower part of the room such as the floor.

・ <Hygiene and cooling effect>
With low ozone concentration, hygiene management and photocatalytic reactions can be expected to provide health management and forest bathing effects due to a large amount of negative ions, and the enjoyment of fresh and healthy life will be enhanced. Safe living environment can be provided by sterilization + deodorization + dust collection + smoke removal. As a result of making an air purification activator incorporating four counter discharge electrodes in the ward and conducting a test to confirm its usefulness, the number of observed bacteria dropped before and after installation decreased from 18% to 58%, averaging 38%. Have confirmed its usefulness. The air purifying activator of the present invention can be expected to be more effective because the amount and range of negative ions released are expanded. Keeping the room air as normal as possible is one of the important infection prevention measures.
In summary, (1) sterilization, (2) deodorization, (3) reduction of suspended dust due to neutralization and subsidence of unloading suspended dust, (4) smoke extinguishing, (5) dust collection on the cylindrical electrode , (6) decomposition of adsorbed dust by photocatalytic action of titanium oxide contained in the cylindrical electrode, (7) creation of a cool environment by negative ions (forest bath effect), (8) no electromagnetic interference, (9) fan Since it is not used, effects such as low cost, small size and light weight can be achieved evenly by releasing directly from the ceiling.
The use of the downlight with a negative ion generator of the present invention is not particularly limited, but it is a general room, a hospital, a car, a train, a commercial facility, an amusement facility, a restaurant, a restaurant, a beauty / barber institution, smoking Examples include various facilities and individual places such as places, fresh food departments, food departments, factories, pet shops, animal hospitals, ceilings, and warehouses.

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

  FIG. 1 is a schematic cross-sectional view in which the downlight C with a negative ion generator of the present embodiment is 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 through the power cord 9, and the illuminator B and the negative ion generator A are adjusted to the necessary frequency and voltage for use. In this example, the installation on the ceiling 50 is fixed by inserting the casing 1 into the ceiling opening 51 and sandwiching 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 counter discharge electrodes are arranged in one row 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 counter discharge electrode is detachably attached to the exterior plate 30 from the surface. Thereby, only the counter discharge electrode can be attached and detached for maintenance. However, when the cartridge 130 is mounted on the back surface of the exterior plate 30, maintenance is possible by making it possible to detach it including the exterior plate 30. 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. A mounting spring 11 is provided at the lower part of the outer surface of the housing so as to face the ceiling contact piece 12 and sandwich the ceiling plate. A power cord 21 connected to an external power source, a power supply outlet 2 for supplying electricity to the illuminator B and the negative ion generator A are provided at the top of the housing 1. In this example, the power supply outlet and the power cord are attached to the top, but the present invention is not limited to this, and the side may be used. In this example, a means for inserting the downlight C with a negative ion generator into the ceiling opening and sandwiching and pressing the ceiling plate between the attachment spring 11 and the ceiling abutting piece 12 is adopted for the attachment to the ceiling.

  FIG. 4 shows a lighting fixture. A power source 204 incorporating a lighting circuit and a transformer, a socket 203 to which the light source 201 is attached, and a reflective shade 202 that reflects light from the light source downward. In this example, a fluorescent lamp is employed as the light source. Moreover, although the reflective shade 202 is integrally shown as the exterior body of the illuminator B, the reflective functional portion and other portions can be appropriately separated.

FIG. 5A shows an example in which the counter discharge electrode of the negative ion generator B is configured as 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 in the opening, and the needle electrode 102 is determined from 1.0 to 5.0 mm at the opposite position. Each needle-like electrode 102... 102 is connected and fixed to the needle-like electrode mounting plate 133 via the needle-like electrode mounting body 134 so that the needle-like electrode is attached at a predetermined interval. The plate 133 and the discharge electrode mounting plate 131 are coupled to each other through the coupling support 132 to form the cartridge 130 that keeps the opposing 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 is provided as a connection terminal thereof, and a cable 135 for supplying a negative charge to the needle electrode 102 is also provided. . For attachment / detachment of the cartridge 130 and connection of the power supply terminal, means such as a plug connection connected at a predetermined position or a pressure contact with a spring-like terminal can be employed. 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 can be freely attached to and detached from the exterior plate or the housing 1, and the opposing position of the cylindrical electrode and the needle electrode can be accurately maintained and performance can be maintained even by attachment and detachment such as maintenance.

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

Schematic sectional view of the downlight with negative ion generator of the present embodiment FIG. 1 is a plan view of a downlight with a negative ion generator according to this embodiment shown in FIG. Top view of an example placed around the light source Case sectional view of this embodiment Sectional drawing of the lighting fixture of a present Example Perspective view of cartridge with counter discharge electrode Schematic of an example where a negative ion generator is attached to the reflective shade of a lighting fixture Observation diagram of negative ions by blowing direction Negative ion observation diagram of an air cleaning activator incorporating four counter discharge electrodes Example of equipment layout using both counter electrode and single needle electrode Counter discharge electrode Example of positive electrode with holes in thick plate

Explanation of symbols

A Negative ion generator B Illuminator C Downlight with mains ion generator 1 Housing 2 Power outlet 3 Reflecting shade 11 Mounting spring 12 Ceiling abutment piece 21 Power cord 30 Exterior plate 40 Housing lower surface opening 50 Ceiling 51 Ceiling opening DESCRIPTION OF SYMBOLS 100 Counter discharge electrode 101 Cylindrical electrode 102 Acicular electrode 103 High voltage unit 104 Negative electrode end 105 Cable 106 Cable 107 Positive electrode end 120 Single acicular discharge electrode 121 Reflector 130 Cartridge 131 Discharge electrode mounting plate 132 Combination support | pillar 133 Acicular 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 emission source (lamp)
202 Reflecting shade 203 Socket 204 Power supply 205 Illumination opening 206 Reflecting shade connection

Claims (11)

A downlight equipped with a light source and a fanless negative ion source ,
The fanless type negative ion generation source is configured such that a cylindrical electrode and a needle electrode are arranged to face each other to form a counter discharge electrode, and a high voltage of direct current is generated by using the needle electrode as a negative electrode and the cylindrical electrode as a positive electrode. A negative ion generator that emits wind containing negative ions when applied,
The needle-like electrode of the counter discharge electrode is located on the axial extension of the cylinder of the cylindrical electrode, and is arranged at a distance of 1 to 5 mm from the opening surface,
The negative ion emission opening direction of the cylindrical electrode is the irradiation direction of the light source,
Overlapping downlight illumination range and negative ion emission range
Downlight with negative ion generator.   The negative ion generation according to claim 1, wherein a negative ion generation source is disposed between a reflective shade that reflects light from a light source in a housing that is open at least below, and a side plate of the reflective shade and the housing. Downlight with instrument.   A reflective shade that reflects light from a light source is provided in a housing that is open at least below, a negative ion wind sending hole is provided in the reflective shade, and the reflective shade is detachably mounted from below. The downlight with the negative ion generator in any one of 1 or 2.   The downlight with a negative ion generator according to any one of claims 1 to 3, wherein the negative ion generation source is configured by combining a counter discharge electrode and a single needle discharge electrode as a negative electrode.   The downlight with a negative ion generator according to any one of claims 1 to 4, wherein a sterilization basket is used as the luminescence source.   At least the lower plate of the housing opened at the lower side is mounted with an exterior plate body in which an opening for light and a negative ion wind sending hole are formed, and the discharge electrode mounting body on which the discharge electrode is mounted is mounted from below. The downlight with a negative ion generator according to any one of claims 1 to 5, wherein the downlight is detachably mounted.   The negative ion generator according to any one of claims 1 to 6, wherein the cylinder of the cylindrical electrode is a tunnel formed by providing a through hole in a cylinder or a thick plate having a thickness of 3 to 30 mm. Downlight.   The acicular electrode and / or the single acicular 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 negative ion generator.   The needle electrode of the counter discharge electrode is located on the axial extension of the cylinder of the cylindrical electrode, and is arranged at a distance of 2 to 3 mm from the opening surface. Downlight with negative ion generator as described in. The downlight with a negative ion generator according to any one of claims 1 to 9, wherein negative ions and a small amount of ozone are released from the counter discharge electrode by corona discharge. The downlight with a negative ion generator according to any one of claims 1 to 10, wherein a plurality of counter discharge electrodes are provided.