Ultraviolet ray lamp and sterilizers and cleaners using the lamp
First Claim
1. An ultraviolet ray lamp comprising:
- a discharge vessel made of quartz glass having a filling gas therein;
a pair of electrodes constructed and arranged to generate a discharge in the discharge vessel; and
an optical filter including a metal oxide, which is formed on part of the outer surface of the discharge vessel, transmitting ultraviolet rays of long wavelength and blocking ultraviolet rays of short wavelength.
1 Assignment
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Accused Products
Abstract
An ultraviolet ray lamp comprises a discharge vessel made of quartz glass, filled with a filling. A pair of electrodes is able to generate a discharge in the discharge vessel. An optical filter made of metal oxide, which is partly formed on the outer surface of the discharge vessel, transmits ultraviolet rays of long wavelength and cuts off ultraviolet rays of short wavelength. Furthermore, A device for generating ultraviolet rays comprises an ultraviolet ray lamp generating ultraviolet rays including short and long wavelength, having a discharge vessel made of quartz glass. An enclosure accommodates the discharge vessel, transmitting at least ultraviolet ray of short wavelength. An optical filter made of metal oxide, which is partly formed on at least one side of the surface of the enclosure, transmits ultraviolet rays of long wavelength and cuts off ultraviolet rays of short wavelength. An ultraviolet ray lamp or a device for generating ultraviolet rays may be used for a sterilizer, an apparatus for treating fluid, or an air cleaner.
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Citations
14 Claims
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1. An ultraviolet ray lamp comprising:
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a discharge vessel made of quartz glass having a filling gas therein;
a pair of electrodes constructed and arranged to generate a discharge in the discharge vessel; and
an optical filter including a metal oxide, which is formed on part of the outer surface of the discharge vessel, transmitting ultraviolet rays of long wavelength and blocking ultraviolet rays of short wavelength. - View Dependent Claims (2, 3, 4)
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5. A device for generating ultraviolet rays comprising:
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an ultraviolet ray lamp constructed and arranged to generate ultraviolet rays including short and long wavelength, the lamp having a discharge vessel made of quartz glass;
an enclosure accommodating the discharge vessel, transmitting at least ultraviolet rays of short wavelength; and
an optical filter comprising a metal oxide, which is formed on at least part of one side surface of the enclosure, transmitting ultraviolet rays of long wavelength and blocking ultraviolet rays of short wavelength. - View Dependent Claims (6, 7)
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8. A sterilizer comprising:
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a device constructed and arranged to generate ultraviolet rays comprising;
an ultraviolet ray lamp constructed and arranged to generate ultraviolet rays including short and long wavelength, and having a discharge vessel made of quartz glass;
an enclosure accommodating the discharge vessel, the enclosure transmitting at least ultraviolet rays of short wavelength; and
an optical filter comprising a metal oxide, which is formed on at least part of one side of a surface of the enclosure, transmitting ultraviolet rays of long wavelength and blocking ultraviolet rays of short wavelength;
a holder supporting the ultraviolet ray lamp; and
a body fixing the holder, and accommodating the ultraviolet ray lamp. - View Dependent Claims (10)
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9. A sterilizer comprising:
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an ultraviolet ray lamp;
a holder supporting the ultraviolet ray lamp, the ultraviolet ray lamp comprising;
a discharge vessel made of quartz glass and having a filling gas therein;
a pair of electrodes constructed and arranged to generate a discharge in the discharge vessel; and
an optical filter comprising a metal oxide, which is formed on at least a part of the outer surface of the discharge vessel, transmitting ultraviolet rays of long wavelength and blocking ultraviolet rays of short wavelength; and
a body fixing the holder, and accommodating the ultraviolet ray lamp.
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11. An apparatus for treating water comprising:
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a device constructed and arranged to generate ultraviolet rays comprising;
an ultraviolet ray lamp generating ultraviolet rays including short and long wavelength, having a discharge vessel made of quartz glass;
an enclosure accommodating the discharge vessel, transmitting at least ultraviolet rays of short wavelength; and
an optical filter comprising a metal oxide, which is formed on at least part of one side of the surface of the enclosure, transmitting ultraviolet rays of long wavelength and blocking ultraviolet rays of short wavelength;
a holder supporting the ultraviolet ray lamp;
a water tank fixing the holder, and accommodating the ultraviolet ray lamp; and
a blower supplying air to the tank. - View Dependent Claims (12, 14)
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13. An air cleaner comprising:
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a case having an intake and an exhaust;
a blower for causing air to flow through the case; and
an ultraviolet ray lamp, arranged in the airflow, the lamp comprising;
a discharge vessel made of quartz glass and having a filling gas therein;
a pair of electrodes constructed and arranged to generate a discharge in the discharge vessel; and
an optical filter comprising a metal oxide, which is formed on at least part of the outer surface of the discharge vessel, transmitting ultraviolet rays of long wavelength and blocking ultraviolet rays of short wavelength.
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Specification