Abstract: A lighting device includes a light guide plate, a light source circuit, and a chassis. By conducting an extrusion process, the light guide plate may at least include a first light-guiding area and a second light-guiding area. The light source circuit faces toward an inlet of the light guide plate. When the light source circuit emits light beams toward the light guide plate, the first light-guiding area reflects the light beams toward a first light-guiding angle group, and the second light-guiding area reflects the light beams toward a second light-guiding angle group. The first light-guiding angle group is different from the second light-guiding angle group. The chassis is configured to fix the light guide plate and the light source circuit.

Abstract: An assembly structure for an embedded light device includes a detachable installation module and an outer ring of the embedded light device. The detachable installation module has sliding grooves extending along with an installation direction and a lock piece having one end abutting against a position recovery element. When the position recovery element is in an initial position, a lock portion at the other end of the lock piece is exposed in the sliding grooves along with a direction perpendicular to a direction of the sliding grooves. When the position recovery element is compressed, the lock piece is compressed along the direction perpendicular to the sliding grooves. The outer ring includes a sliding track for slidably engaging with the sliding grooves. The sliding track includes an engaging piece, the engaging piece including a pressing surface and a locking surface.

Abstract: A lighting device includes a light guide plate, a light source circuit, and a chassis. By conducting an extrusion process, the light guide plate may at least include a first light-guiding area and a second light-guiding area. The light source circuit faces toward an inlet of the light guide plate. When the light source circuit emits light beams toward the light guide plate, the first light-guiding area reflects the light beams toward a first light-guiding angle group, and the second light-guiding area reflects the light beams toward a second light-guiding angle group. The first light-guiding angle group is different from the second light-guiding angle group. The chassis is configured to fix the light guide plate and the light source circuit.

Abstract: An assembly structure for an embedded light device includes a detachable installation module and an outer ring of the embedded light device. The detachable installation module has sliding grooves extending along with an installation direction and a lock piece having one end abutting against a position recovery element. When the position recovery element is in an initial position, a lock portion at the other end of the lock piece is exposed in the sliding grooves along with a direction perpendicular to a direction of the sliding grooves. When the position recovery element is compressed, the lock piece is compressed along the direction perpendicular to the sliding grooves. The outer ring includes a sliding track for slidably engaging with the sliding grooves. The sliding track includes an engaging piece, the engaging piece including a pressing surface and a locking surface.