JP2005230373A - Ultraviolet lamp unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a UV lamp unit where dark place discharge property is improved by irradiating the UV lamp with light. <P>SOLUTION: The UV lamp unit is constituted so that a UV sterilizer 5 is provided with a long-length case 6 respectively provided with an air flow-in port 6c on one side and an air flow-out port 6d on the other side and the UV lamp unit 7 installed in the case and consisting of the UV lamp 9 and a power source part 8 for supplying power to the UV lamp, wherein an exciting means for exciting the UV lamp 9 is positioned in the vicinity of the UV lamp 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an ultraviolet lamp unit that sterilizes bacteria or germs floating in the air by irradiating ultraviolet rays, and more particularly to an excitation means at the time of discharge start of the ultraviolet lamp.

  2. Description of the Related Art Conventionally, an ultraviolet sterilization apparatus including an ultraviolet lamp unit that performs sterilization treatment by irradiating ultraviolet rays to air, as disclosed in Patent Document 1, has an elongated sterilization and deodorization chamber 27 that contains an ultraviolet lamp 21. An inlet 25 and an air outlet 26 are provided. The air flowing from the air inlet 25 into the sterilization deodorizing chamber 27 is irradiated with ultraviolet rays from the ultraviolet lamp 21 to sterilize bacteria floating in the air, and then flows out from the air outlet 26. It is supposed to be.

  Ultraviolet rays emitted from the ultraviolet lamp cause deterioration of the material and are harmful to the human body. Therefore, an ultraviolet sterilizer built in an air conditioner or the like accommodates an ultraviolet lamp in a case that is not deteriorated by ultraviolet rays so that the ultraviolet rays do not leak outside, so that the ultraviolet lamp is not irradiated with external light. It has become. As shown in FIG. 7, the ultraviolet lamp is formed by sealing argon gas or mercury gas in a U-shaped quartz glass tube having discharge electrodes at both ends, and applying a voltage between the electrodes. Ultraviolet rays are emitted by discharging. However, when the ultraviolet lamp is left in a dark place or a cold place of 10 ° C. or less like a general fluorescent lamp, the discharge start-up characteristic when power is applied is deteriorated (so-called dark place discharge characteristic is deteriorated). ), And there was a problem that the unlit state continued in some cases.

  In Patent Document 2, preheater heaters 3 and 4 are provided on the electrodes 5 and 6 for generating ultraviolet rays, and a voltage is constantly applied to the preheater heaters 3 and 4 so that the vicinity of the electrodes has a temperature at which ultraviolet rays are easily discharged. The technology is disclosed. However, in this method, since a voltage is always applied to the residual heat heaters 3 and 4, the electrodes are warmed and discharge is easy, but there is a problem that power is consumed excessively.

Japanese Patent Laid-Open No. 10-249166 (page 2-5, FIG. 3) JP-A-6-333538 (page 3-6, FIG. 2)

  In view of the above problems, an object of the present invention is to provide an ultraviolet lamp unit having improved so-called dark place discharge characteristics in which an ultraviolet lamp starts discharging smoothly without consuming extra power.

  In order to solve the above problems, the present invention provides a mounting plate, a light-shielding plate attached to the mounting plate so as to hang down, and a power supply unit supported on one side of the light-shielding plate, An ultraviolet lamp that is inserted into the insertion hole and protrudes to the other side of the light shielding plate and is provided on the power supply unit, and is attached to the light shielding plate so as to face the ultraviolet lamp, and excites the ultraviolet lamp. It has a configuration comprising excitation means. The excitation means is an LED (light emitting diode). In addition, a protective body is attached to the LED (light emitting diode). The excitation means includes a light guide that irradiates light to the surroundings, and a light source that is provided on the back side of the light shielding plate and supplies light to the light guide. In addition, the light guide is formed by forming a polarization plane.

  According to the present invention, an ultraviolet lamp unit having improved so-called dark discharge characteristics is provided by providing excitation means that irradiates light toward the ultraviolet lamp in the vicinity of the ultraviolet lamp and assists the rising characteristics of discharge. Can do.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

  FIG. 1 is a cross-sectional view showing an air conditioner in which an ultraviolet sterilizer equipped with an ultraviolet lamp unit according to the present invention is incorporated, and FIG. 2 is a cross-sectional view of the ultraviolet sterilizer. FIG. 3 is a cross-sectional view of the main part showing the ultraviolet lamp unit. As shown in FIG. 1, an air conditioner incorporating an ultraviolet sterilizer includes a main body having a front and rear dimension larger than the vertical dimension, and an upper surface formed by a plurality of crosspieces from the upper front edge to the rear edge of the main body. A suction port 1 is provided, and a blowout port 2 provided with a wind direction deflecting plate is provided at the center of the bottom surface formed in an arc shape. In the air passage connecting the suction port 1 and the air outlet 2, a vertical portion 3 a, a rear inclined portion 3 b bent at the upper end of the vertical portion 3 a and inclined backward, and an upper end thereof as the rear inclined portion A heat exchanger 3 including a front inclined portion 3c that is separated from the upper end of 3b and is inclined forward, and a blower fan 4 are provided.

  An elongated case 6 and an ultraviolet lamp unit installed on one side of the case 6 are formed in a separation portion formed between the upper end of the rear inclined portion 3b and the upper end of the front inclined portion 3c. 7 is provided. As shown in FIG. 2, the case 6 includes a rectangular lower case 6b whose upper surface is opened, and an upper cover 6a formed in a flat plate shape covering the opened upper surface of the lower case 6b. On one side of the upper cover 6a, an inflow port 6c through which a part of the air sucked from the suction port 1 flows is formed by a plurality of bars, and on the other side surface of the lower case 6b by a plurality of bars. An outlet 6d is formed. As shown in FIG. 3A, the ultraviolet lamp unit 7 includes a mounting plate 6e that is screwed into a rectangular mounting hole formed in the upper cover 6a, and spot welding to the lower surface of the mounting plate 6e. And a U-shaped ultraviolet ray projecting so as to be directed in the longitudinal direction of the case 6 from an L-shaped light-shielding plate 10 ′ joined by the above-mentioned The lamp 9 includes a power supply unit 8 supported on the back side of the light shielding plate 10 ′ and connected to the base of the ultraviolet lamp 9. In addition, an excitation LED 9a protrudes from the insertion hole formed in the lower part of the light shielding plate 10 'so as to face the ultraviolet lamp 9. The excitation LED 9a is connected to the ultraviolet lamp 9 in the above-described manner. When a high voltage is applied from the power supply unit 8, visible light is irradiated toward the high voltage to excite the rise of the ultraviolet light emission phenomenon.

  The light shielding plate 10 ′ is covered with a rubber 10 ′ a for preventing ultraviolet leakage around the light shielding plate 10 ′, and prevents the ultraviolet light emitted from the ultraviolet lamp 9 from being applied to the power supply unit 8. In addition to protecting the deterioration and internal components, ultraviolet rays are prevented from leaking outside the case 6.

  As shown in FIG. 3 (a), the power supply unit 8 includes a power supply board 8a in which a large number of electronic components are mounted to generate a high voltage, and the power supply board 8a and the ultraviolet lamp 9 are It is connected by a lead wire 9d. The power supply substrate 8a is filled with an insulating resin material and fixed around the power supply substrate 8a. When the power is turned on by an external lead wire 8c, the power supply substrate 8a generates a high voltage. A high voltage is applied to the ultraviolet lamp 9 through the lead wire 9d. When a high voltage is applied, the argon gas or mercury gas enclosed in the ultraviolet lamp 9 is excited thereby to emit ultraviolet rays to the surroundings.

  The excitation LED 9a is turned on at the same time that a high voltage is applied to the ultraviolet lamp 9 from the power supply unit 8, and is irradiated with light toward the ultraviolet lamp 9 for a predetermined time and then turned off. As a result, the argon gas or the like enclosed inside is excited by the light energy and starts to emit ultraviolet rays smoothly.

  The air flowing into the case 6 from the inlet 6c is purified by sterilizing bacteria or bacteria contained therein by the ultraviolet rays irradiated from the ultraviolet lamp 9, and then the blower fan 4 from the outlet 6b. It is designed to be spilled out.

  As shown in FIG. 3B, the excitation LED 9a has a glass cap 22 attached to a transparent resin portion of the LED, a shrinkable tube 9c is attached to the lead wire 9b, and an aluminum tape 23 is further provided on the upper side. The glass cap 22 is wound and covered with a silicon tube 24 for preventing breakage, thereby protecting the LED and the lead wire from the ultraviolet rays emitted from the ultraviolet lamp 9. ing.

  Next, a second embodiment will be described. The ultraviolet lamp unit shown in FIG. 4A supports a U-shaped ultraviolet lamp 9 arranged so as to face the longitudinal direction of the case 6, and the ultraviolet lamp 9, and leaks ultraviolet rays backward. It comprises a light shielding plate 10 to be prevented, a power supply unit 8 for supplying a high voltage to the ultraviolet lamp 9, and excitation means mounted below the light shielding plate 10.

  The excitation means is located on the back side of the light-shielding plate 10 with a cylindrical glass body 26 mounted through a silicon tube 24 in an insertion hole formed in the light-shielding plate 10. As shown in FIGS. 4 (b) and 4 (c), the tip of the glass body, which is a light source 9a that supplies light, is a polarization plane 26a having an angle of about 45 degrees, as shown in FIGS. Has been processed. The light supplied from the light source 9 a is guided to the glass body 26, is polarized by the polarization plane 26 a at the tip, and is irradiated toward the ultraviolet lamp 9. As a result, the light source 9a is protected from ultraviolet rays and can be excited stably.

  Next, a third embodiment will be described. The ultraviolet lamp unit shown in FIG. 5 (a) supports a U-shaped ultraviolet lamp 9 arranged so as to face in the longitudinal direction of the case 6 and the ultraviolet lamp 9 as in the second embodiment. In addition, the light shielding plate 10 that prevents leakage of ultraviolet rays to the rear, the power supply unit 8 that supplies a high voltage to the ultraviolet lamp 9, and excitation means mounted below the light shielding plate 10 are included.

  The excitation means is located on the back side of the light-shielding plate 10 with a cylindrical glass body 26 mounted through a silicon tube 24 in an insertion hole formed in the light-shielding plate 10. As shown in FIGS. 5B and 5C, the tip of the glass body is processed so as to form a mortar-shaped recess 26b. The light supplied from the light source 9a is guided to the glass body 26 and diffused by the concave portion 26b at the tip, and a part of the diffused light is irradiated toward the ultraviolet lamp 9. ing. As a result, as compared with the second embodiment described above, the assembly operation of the ultraviolet irradiation section can be easily performed without paying attention to the mounting angle of the glass body 26 and the directionality of the light.

  Next, a fourth embodiment will be described. The ultraviolet lamp unit shown in FIG. 6 (a) supports a U-shaped ultraviolet lamp 9 arranged so as to face the longitudinal direction of the case 6 and the ultraviolet lamp 9 as in the second embodiment. In addition, the light shielding plate 10 that prevents leakage of ultraviolet rays to the rear, the power supply unit 8 that supplies a high voltage to the ultraviolet lamp 9, and excitation means mounted below the light shielding plate 10 are included.

  The excitation means is located on the back side of the light-shielding plate 10 with a cylindrical glass body 26 mounted through a silicon tube 24 in an insertion hole formed in the light-shielding plate 10. As shown in FIG. 6 (b), a ground glass processing 26c is made on the circumferential surface of the tip of the glass body. The light supplied from the light source 9a is guided to the glass body 26 and diffused to the periphery by the surface of the ground glass processing 26c at the tip, and a part of the diffused light is irradiated toward the ultraviolet lamp 9. It has become so. Thereby, while being able to reduce the processing cost of the said glass body 26, the assembly operation | work of the said ultraviolet irradiation part can be performed easily, without paying attention to an attachment angle and the directionality of light.

It is sectional drawing of the air conditioner incorporating the ultraviolet sterilizer by this invention. It is sectional drawing which shows the ultraviolet sterilizer by this invention. (A) is principal part sectional drawing which shows the 1st Example of an ultraviolet lamp unit. (B) is principal part sectional drawing which shows an excitation means. (A) is principal part sectional drawing which shows the 2nd Example of an ultraviolet-ray lamp unit. (B) And (c) is sectional drawing which shows a glass body. (A) is principal part sectional drawing which shows the 3rd Example of an ultraviolet lamp unit. (B) And (c) is sectional drawing which shows a glass body. (A) is principal part sectional drawing which shows the 4th Example of an ultraviolet-ray lamp unit. (B) is sectional drawing which shows a glass body. It is explanatory drawing which shows the conventional ultraviolet lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Intake port 1a Air filter 2 Outlet 3 Heat exchanger 3a Vertical part 3b Back inclination part 3c Front inclination part 4 Blower fan 5 Ultraviolet sterilizer 6 Case 6a Upper cover 6b Lower case 6c Inlet 6d Outlet 7 Ultraviolet lamp unit 8 Power supply 9 UV lamp 9a Excitation LED
DESCRIPTION OF SYMBOLS 10 Light-shielding plate 22 Glass cap 23 Aluminum tape 24 Silicon tube 26 Glass body 26a Refraction surface 26b Recessed part 26c Ground glass processing

Claims (5)

  A mounting plate, a light-shielding plate attached to the mounting plate so as to hang down, a power supply unit supported on one side of the light-shielding plate, and the insertion hole. An ultraviolet lamp provided in the power supply unit so as to protrude to the other side, and an excitation unit attached to the light shielding plate so as to oppose the ultraviolet lamp and exciting the ultraviolet lamp. Lamp unit.   2. The ultraviolet lamp unit according to claim 1, wherein the excitation means is an LED (light emitting diode).   The ultraviolet lamp unit according to claim 2, wherein a protective body is attached to the LED (light emitting diode).   The said excitation means consists of the light guide which irradiates light to the circumference | surroundings, and the light source body which is provided in the back surface side of the said light-shielding plate and supplies light to the said light guide. UV lamp unit.   The ultraviolet lamp unit according to claim 4, wherein a polarization plane is formed on the light guide.

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