Ceiling lamp with light guide plate and assembly method thereof

The present invention relates to a ceiling lamp with a light guide plate and an assembly method thereof. The ceiling lamp consists of a board assembly, and a lamp body assembly attached to the board assembly via a fixation assembly.

FIELD OF THE INVENTION

The present invention relates to a ceiling lamp with a light guide plate and an assembly method thereof.

BACKGROUND OF THE INVENTION

CN 201520870338.2 discloses an LED ceiling lamp having a circular light guide plate. This technique aims at providing LED ceiling lamp having a circular light guide plate, whose structural design is reasonable, light efficiency is good, appearance is ultra-thin, whole shape is succinct, energy-conserving high-efficient luminance is high. The technique is summarized as it includes a dustcoat and a chassis, the dustcoat is rotatory fixed with the chassis, and the LED ceiling lamp is further provided with a light diffusion plate, a light guide plate, a light reflection paper, an aluminum plate, an ultra-thin drive and an LED luminescent plate. The LED luminescent plate is installed on the aluminum plate. The light reflection paper, the light guide plate, the light diffusion plate are arranged on the LED luminescent plate in order. The aluminum plate is fixed on the dustcoat, and a protective ring is installed on the chassis, and the ultra-thin drive is fixed on the chassis. The dustcoat is provided with a screw hole for fixing the aluminum plate and a buckle for fixing the chassis, the buckle is engaged with a groove of the chassis. The disadvantage of this utility model situates where the ceiling lamp could only be assembled if the dustcoat is open and the dustcoat needs to be buckled after the assembly is finalized. This causes an inconvenient assembly, complicated structure and high cost.

CN 201511023824.1 discloses an LED ceiling lamp with light guide plate. This technique aims at providing an LED ceiling lamp with light guide plate with a performance matching its operating standards, a simple and controllable manufacturing process and a lower cost. The technique is summarized as the LED ceiling lamp comprises a power shell, a power box cover, the light guide plate, a PCB, an LED light source, a reflecting film and wiring terminals. The light guide plate is annular. The annular reflecting film is arranged on the lower surface of the light guide plate. The upper surface of the light guide plate is of a prism structure, and a concave point is formed in the lower surface of the light guide plate. The PCB is arranged below the reflecting film and provided with the wiring terminals. The power shell and the power box cover are sequentially arranged above the light guide plate. The LED light source is arranged below the light guide plate. The disadvantage of this invention is that the main body of the ceiling lamp is divided into two pieces, which is adverse to lowering the cost or convenient assembly. The assembly requires as well opening the lamp cover, which adds to the difficulty to the assembly.

SUMMARY OF THE INVENTION

The present invention aims at overcoming the above-mentioned drawbacks and providing a ceiling lamp with a light guide plate that is manufactured at low cost, has convenient assembly method and could be assembled without opening its lamp cover. The present invention also aims at providing an assembly method that is inexpensive and could efficiently prevent the lamp body from falling off the ceiling.

The ceiling lamp with the light guide plate in the present invention consists of a board assembly and a lamp body assembly, where the lamp body assembly is attached to the board assembly via a fixation assembly.

Preferably, the board assembly consists of a cross-shaped connecting board pierced with a first center hole and a bending sheet attached to the cross-shaped connecting board, wherein the bending sheet has a bending portion that extends from an end of the bending sheet and vertically stands against an edge of a backboard and a brink that projects from an end of the bending portion.

Preferably, the bending sheet consists of four slats that form a cross, positioning holes located on the slats, four bending portion each extending vertically from an end of the slat, and four brinks each projecting from the bending portion.

Preferably, the lamp body assembly consists of a lamp cover with a circumferential edge having an annular groove, a plurality of lamp cover screw holes that are vertically distributed on an internal surface of the annular groove, an optical diffuser, the light guide plate, an aluminum board wrapping around a circumferential side wall of the light guide plate, a reflector board and the backboard; wherein the optical diffuser, the aluminum board and the reflector board are orderly arranged in a round tray confined by the annular groove.

Preferably, the backboard consists of a board, a pair of semi-circular-shaped convexes that are symmetrically protruding from two symmetrical semi-circle portions of one side of the board, a pair of semi-circular-shaped concave cavities correspondingly formed on the other side of the board, a second center hole located on the board, and a plurality of tapped holes arranged on an edge of the backboard. Each of the semi-circular-shaped concave cavities is provided with a PCB and a plurality of sponge blocks that are located around the PCB.

Preferably, a plurality of bulging blocks are radiated from the circumferential side wall of the light guide plate, the aluminum board is attached with an LED light source.

Preferably, the backboard, the optical diffuser, the light guide plate, the aluminum board, the LED light source and the reflector board are fixedly arranged in the light body assembly through the screws screwing in the tapped holes on the backboard and then in the lamp cover screw holes. The bending portion is stopped from moving by a buckle located on an edge of an outer wall of the annular groove so that the board assembly is fixedly connected to the round tray of the annular groove and the lamp body assembly is therefore fixedly connected to the board assembly.

Preferably, the buckle located on the edge of the outer wall of the annular groove of the lamp cover is provided with a first bump. A second bump is provided on the brink of the board assembly. When rotating the light body assembly, the first bump on the buckle thus clips to lock when hitting the second bump on the brink of the board assembly, in this way, the assembly of the ceiling lamp is complete.

The present invention also aims at providing an assembly method of the ceiling lamp with the light guide plate, which comprises the following steps:

fixing a buckle to an annular groove of a lamp cover through screwing screws;

welding a bending sheet to a cross-shaped connecting board;

placing PCBs and a plurality of sponge blocks in two semi-circular-shaped convexes of a backboard, connecting the PCB to an LED light source that is attached to an aluminum board;

placing an optical diffuser, the aluminum board wrapping around a circumferential side wall of a light guide plate, the reflector board and the backboard successively in a round tray of the lamp cover and fixing them to the lamp cover through screwing screws in tapped holes on the backboard;

rotating the light body assembly to enable a first bump on the buckle to clip to lock when hitting a second bump on a brink of the board assembly, so as to complete the assembly of the ceiling lamp.

Preferably, one of the following assembly methods of the ceiling lamp with the light guide plate is applicable.

An outer wall of the lamp cover, the annular groove and the round tray are made as die-cast one piece.

The outer wall of the lamp cover, the annular groove and the round tray are formed by bending aluminum profiles.

The ceiling lamp of the present invention reduces large-sized components in conventional lamps, which also reduces the cost. The ceiling lamp of the present invention is convenient to assemble.

LIST OF REFERENCE NUMERALS

DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

Embodiments of the present invention are further explained clearly as follows in conjunction with figures.

Referring toFIGS. 1 to 3, a ceiling lamp with a light guide plate consists of a board assembly1, and a lamp body assembly2attached to the board assembly1via a fixation assembly3.

In the present embodiment, the board assembly1consists of a cross-shaped connecting board12pierced with a first center hole121and a bending sheet13attached to the cross-shaped connecting board12, wherein the bending sheet13has a bending portion132that extends from an end of the bending sheet13and vertically stands against an edge of a backboard26and a brink133that projects from an end of the bending portion132.

In the present embodiment, the bending sheet13consists of four slats131that form a cross, positioning holes1312located on the slats131, four bending portions132each extending vertically from an end of the slat131, and four brinks133each projecting from the bending portion132.

In the present embodiment, the lamp body assembly2consists of a lamp cover21with a circumferential edge that has an annular groove211, a plurality of lamp cover screw holes213that are vertically distributed on an internal surface of the annular groove211, an optical diffuser22, the light guide plate23, an aluminum board24wrapping around a circumferential side wall of the light guide plate23, a reflector board25, and the backboard26; wherein the optical diffuser22, the light guide plate23, the aluminum board24and the reflector board25are orderly arranged in a round tray212confined by the annular groove211.

In the present embodiment, the backboard26consists of a board261, a pair of semi-circular-shaped convexes262that are symmetrically protruding from two symmetrical semi-circle portions of one side of the board261, a pair of semi-circular-shaped concave cavities262correspondingly formed on the other side of the board261, a second center hole2611located on the board261, and a plurality of tapped holes2612arranged on an edge of the backboard26. Each of the semi-circular-shaped concave cavities262is provided with a PCB28and a plurality of sponge blocks27that are located around the PCB28.

In the present embodiment, a plurality of bulging blocks231are radiated from the circumferential side wall of the light guide plate23.

In the present embodiment, the aluminum board24is attached with an LED light source241.

In the present embodiment, the fixation assembly3consists of a plurality of buckles31, screw holes311arranged on the buckles31, a plurality of first bumps312each arranged on the buckle31, and screws32that screwed in the screw holes311to fix the buckles31to the annular groove211.

In the present embodiment, the backboard26, the optical diffuser22, the light guide plate23, the aluminum board24, the LED light source241and the reflector board25are fixedly arranged in the light body assembly2through screws42screwing in the tapped holes2612on the backboard26and then in the lamp cover screw holes213.

In the present embodiment, referring toFIGS. 3-4, the brinks133are placed in the annular groove211, and pressed and stopped by the buckle31so as to immobilize the board assembly1and connect together the board assembly1and the lamp body assembly2.

Referring toFIGS. 3-4, the buckle31located on an edge of an outer wall of the annular groove211of the lamp cover21is provided with the first bump312. A second bump1321is provided on the brink133of the board assembly1. When rotating the light body assembly2, the first bump312on the buckle31thus clips to lock when hitting the second bump1321on the brink133of the board assembly1, in this way, the assembly of the ceiling lamp is complete.

Referring toFIGS. 1 to 4, an assembly method of a ceiling lamp with a light guide plate comprises:

fixing a buckle31to an annular groove211of a lamp cover21through screwing screws32;

welding a bending sheet13to a cross-shaped connecting board12;

placing PCBs28and a plurality of sponge blocks27in two semi-circular-shaped convexes262of a backboard26, connecting the PCB28to an LED light source241that is attached to an aluminum board24;

placing an optical diffuser22, the aluminum board24wrapping around a circumferential side wall of a light guide plate23, a reflector board25and the backboard26successively in a round tray212of the lamp cover21, fixing them to the lamp cover21through screwing screws42in tapped holes2612on the backboard26;

rotating the light body assembly2to enable a first bump312on the buckle31to clip to lock when hitting a second bump1321on a brink133of the board assembly1, so as to complete the assembly of the ceiling lamp.

In one embodiment of the present invention, an outer wall of the lamp cover21, the annular groove211and the round tray212are made as die-cast one piece.

In another embodiment of the present invention, the outer wall of the lamp cover211, the annular groove211and the round tray212are formed by bending aluminum profiles.

The above-mentioned embodiments are the preferred embodiments of the present invention and are considered in all respects as illustrative and not restrictive. Variations and modifications are allowed within the scope of the invention. Those skilled in the art will appreciate that the features described above can be combined in various ways to form multiple variations of the invention. As a result, such variations fall within the scope of the protection to the present invention.