Abstract: An adaptor for electrical junction box comprises: a split sleeve insertable through a wall opening of a box wall of a junction box, and coupled on a cable connector; a plurality of resilient chucking members each integrally formed on the sleeve and sloping rearwardly upwardly from the sleeve to be resiliently compressibly engaged with the wall opening; each chucking member having a plurality of ratchet teeth gradationally formed on the chucking member, whereby upon a forward insertion of the adaptor into the wall opening of the junction box, the split sleeve will be resiliently fastened on the cable connector, and the wall opening will be firmly engaged with the ratchet teeth to stably lock the adaptor and the cable connector on the box wall to prevent a backlash movement of the adaptor and the cable connector.

Abstract: A LED traffic signal light includes: a rear cover having a heat-dissipating device integrally formed on the rear cover, a front transparent cover combined with the rear cover for encasing a LED printed-circuit-board (PCB) and a power supply circuit device in the front and rear covers, and a plurality of packing rings respectively packed in between the front and rear covers for water proof purpose, whereby upon lighting of the LEDs in the traffic signal light, the heat as produced by the LEDs and power supply circuit will be dissipated outwardly effectively by the heat-dissipating device as formed on the rear cover for prolonging the service life of the traffic signal light.

Abstract: A handset of a pay phone includes a reinforcing coupler firmly secured to the handset for coupling the handset with an armored cord linked to the pay phone, having a locking head of the reinforcing coupler stably secured to a mouthpiece of the handset for firmly fastening a flexible hose of the armored cord and a transmitter bracket stably mounted in the mouthpiece of the handset for holding a transmitter in the bracket with a retarding member protruding downwardlly from the transmitter bracket to retain the locking head of the reinforcing coupler to resist an inwardly pushing of the armored cord, thereby preventing an easy breaking of a plurality of communication wires of the armored cord.