Abstract: A power supply system for shelf track lighting device includes a track, and a jointer. The track includes a U-shaped slot, two grooves, and two conductive posts. The jointer includes a bottom cover, an upper cover, and two elastic chips. The upper cover includes a T-shaped supporting cover. The two elastic chips are sandwiched between the T-shaped supporting cover and the bottom cover. The elastic chip includes an arm, a supporting end, an arc-shaped bend portion, and three right-angle-shaped bend portion. The arc-shaped bend portion is near the arm and the arm holds out of the T-shaped supporting cover and abuts against the conductive post. The arm is retracted into the T-shaped supporting cover under the resilient deformation force of the three right-angle-shaped bend portions, thereby tightly connecting the elastic chip to the conductive post is achieved, and further, power can be supplied to the strip LED lamp.

Abstract: An installation equipment includes a holder and an installing board. The holder includes a connecting board, a first installing wall perpendicular to the connecting board, two second installing walls perpendicular to the connecting board and located on two sides of the first installing wall respectively, at least one lock disposed on the first installing wall, at least one locating column perpendicularly extending from the connecting board, and at least two protrusions disposed on the two second installing wall respectively. The installing board is disposed in the holder and includes at least one locating hole, the installing board being clamped among the lock and the two protrusions and the connecting board. The installing board is fixed into the holder so that the installed device connected to the installing board can be fixed onto the holder. The invention further includes an assembling and disassembling method of the installation equipment.