Abstract: A method is provided forming an airtight structure of an electroacoustic device which includes a body shell composed of at least two half-shells and at least one airtight structure region. The method includes providing an automatic glue dispensing device for dispensing and pre-curing a photo-curing glue for one of the two half-shells, putting the half-shell into a photo-curing device to convert the photo-curing glue pre-cured completely into an elastomer, and combining the half-shell and the other one to have a pressing wall of the other half-shell to press the elastomer to form the airtight structure of the electroacoustic device, wherein the automatic glue dispensing device includes a glue dispensing head moving on a groove of the airtight region of the half-shell for dispensing the photo-curing glue and a pre-curing head continuously providing a curing light ray for pre-curing the photo-curing glue.

Abstract: An LED tube lamp structure includes a heat-transferring and light-pervious glass tube; a slightly curved elongated heat-dissipation metal base internally bonded to the glass tube via a thermal adhesive; an LED chip circuit board fitted to a front side of the heat-dissipation metal base; and two electrode covers fitted on two open ends of the glass tube and respectively having a fixing dummy pin and a through hole. The heat-dissipation metal base has two end portions inserted into insertion sections in the electrode covers to generate an upward tension for tightly contacting with the glass tube; and the LED chip circuit board has two contact pins at two ends for extending through the through holes. Thus, the LED tube lamp can be easily assembled and provides good heat transfer and dissipation to ensure normal operation and extended service life thereof.

Abstract: An LED tube lamp structure includes a heat-transferring and light-pervious glass tube; a heat-dissipation metal base in the form of an elongated strip with a predetermined curve and bonded to an inner surface of the glass tube via a thermal adhesive; an LED chip circuit board fitted in a receiving seat on a front side of the heat-dissipation metal base and connected to an LED driving circuit; and two electrode covers fitted on two open ends of the glass tube and internally provided with an insertion section each. The heat-dissipation metal base has two ends inserted into the two insertion sections to have an upward tension for tightly contacting with the glass tube. Therefore, heat produced by the LED tube lamp is effectively transferred to the glass tube and dissipated into ambient air to extend the service life of the LED tube lamp.