(under subclass 11) Subject matter wherein the temperature of the discharge device or lamp is modified by applying a heat exchange liquid to the discharge device or lamp or where the structure includes means to direct the flow of the temperature modifying fluid.
(1) Note. Subclasses 35+, includes discharge devices and lamps which do not have envelopes and which are provided with means for contacting a portion of the device with a heat exchange fluid or liquid. The fluid or liquid containing means may be arranged so that the fluid or liquid may be circulated. Also included are lamps and discharge devices with envelopes with tubular passage ways or conduits formed in the envelope and passing through the lamp near the filament, or other heated portion of the device so that the conduit becomes hot and the heated air rises to draw cold air in at the bottom of the conduit.
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12, where the apparatus includes a recirculating system with a heat exchanger in it so that the temperature modifying fluid is circulated from the lamp or discharge device to the heat exchanger then back again to the lamp or discharge device.
17+, where the lamp or discharge device is provided either with a spaced double-walled envelope or with an envelope and a casing or jacket around the envelope, the structure including means to modify the temperature of the lamp or discharge device. See especially subclasses 22+, where means are provided to circulate a temperature modifying fluid in the space between the double-walls of the envelope or between the envelope and the casing or jacket.
29, where the lamp or discharge device is provided with a liquid electrode.
30+, where the lamp or discharge device is provided with a hollow electrode or a hollow electrode lead conductor and means are provided to modify the temperature of the hollow portion of the electrode or electrode lead. 33, where lamp or discharge device is provided with an envelope and an internal temperature modifying baffle which extends across or into the envelope.
34, where the envelope is provided with either a condensing chamber or condensing surface.
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314, Electric Lamp and Discharge Devices: Consumable Electrodes,
26+, for discharge devices of the consumable electrode type (e.g., arc lamps) which are provided with means for directing the flow of a temperature modifying medium over a portion of the device. The flow directing means may include a casing or jacket for a portion of the device. See indented subclass 29 where the temperature of the device is modified by means of a heat exchange liquid.
