摘要:
The invention relates to a method for recovering of fluorescent material from faulty glass bodies (1) of discharge lamps by crushing (11) the lamps, separating and recovering the fluorescent components thereof. The method comprises the steps of breaking the faulty glass bodies (1) in a crusher, removing all metallic component parts if present in the glass bodies (1) by means of electromagnetic separation (13), separating a remaining fraction forming a reusable waste from the broken scrap including glass particles and fluorescent material particles by sieving (15), separating the fluorescent material from the surface of the glass particles in a liquid by washing (19), and obtaining a reusable fluorescent material from the liquid suspension by means of at least one sedimentary deposition (21). The method comprises the step of treating of the remaining fraction by heat for removing the binding material from the fluorescent material if it is necessary.
摘要:
A discharge tube arrangement for a compact fluorescent lamp is provided. The tube forms a continuous arc path and has electrodes disposed at each end of the arc path. The discharge tube arrangement comprises a first cold chamber in order to control and maintain a required mercury vapor pressure. The first cold chamber is located in a longitudinal end portion of the tube arrangement. The discharge tube arrangement is further provided with at least one second cold chamber, which is positioned between the longitudinal end portions of the discharge tube arrangement. The at least one second cold chamber is positioned on the wall of the tube, and has a cold chamber wall protruding substantially away from the central axis of the discharge tube arrangement. The discharge tube arrangement may have a coiled configuration with helical tube portions or a multifinger configuration with straight tube members.
摘要:
There is provided a low pressure discharge lamp, which comprises a discharge tube, a lamp base holding the discharge tube, and a base cap (6) for covering the lamp base. The base cap (6) also provides mechanical support to the discharge tube. The base cap (6) comprises tube openings (10) for receiving end parts of the discharge tube. The base cap (6) further comprises an adhesive space (14) adjacent to a tube opening (10), the adhesive space containing an amount of adhesive. The adhesive space (14) is open toward the discharge tube. The adhesive contained in the adhesive space (14) adheres to an end part of the discharge tube and thereby fixes the discharge tube to the base cap (6). The base cap comprises at least one upper transversal member (31) and at least one lower transversal member (32). The transversal members (31,32) extend substantially in a plane parallel to a plane of the tube opening (10) adjacent to the adhesive space (14). The upper and lower transversal members (31,32) limit the adhesive space (14) at least partly. There is also provided a method for manufacturing a discharge lamp with a base cap (6) described. In the method, the adhesive space is at least partly limited with the upper and lower transversal members. According to the method, ends of the discharge tube are inserted into the tube openings (10) of the base cap (6). An amount of adhesive is fed in the adhesive space (14), and the adhesive is forced to spill out from the adhesive space (14) and to contact the ends of the discharge tube. The adhesive is allowed to adhere to an end part of the discharge tube and thereby the discharge tube is fixed to the base cap (6). A base cap (6) having an upper and lower transversal member (31,32) as above is also claimed.