(under subclass 18) Subject matter where the lamp or discharge device includes a temperature modifying baffle structure which extends across or into the envelope.
(1) Note. In some of the devices in this subclass the baffle comprises a re-entrant portion of the envelope wall and the temperature modifying fluid may enter the re-entrant portion. In other of the devices, a heat transfer device, such as a radiator member for containing a heat transfer fluid, is enclosed within the envelope of the device.
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33, for other lamps and discharge devices which do not have an enclosing casing or jacket and which have an internal temperature modifying baffle.
34, for lamps and discharge devices which do not have an enclosing casing or jacket where the envelope is provided with a condensing chamber or surface.