Ceiling panel

1. A ceiling panel of which both end portions in a second direction are held on a ceiling base having a long shape extending in a first direction and being provided in parallel spaced in the second direction orthogonal to the first direction, the ceiling panel comprising:

a panel body in a shape of a rectangular flat plate;

a hooked portion provided at a first end portion of the panel body in the first direction;

a hooking portion to hook on the hooked portion of an adjacent ceiling panel to be provided in the first direction, the hooking portion being provided at a second end portion of the panel body in the first direction; and

a securing part provided so as to protrude from a back face side of the first end portion of the panel body in the first direction to outside in the first direction and fixed on the ceiling base from below,

wherein the hooking portion has a folded part that is formed by being bent into a room side from a tip end portion in an extending direction of an extension portion extending outward in the first direction from the second end portion of the panel body in the first direction, and by being further folded inward in the first direction, and

wherein the hooked portion keeps hooking and holding of the folded part of the ceiling panel with the second end portion in the first direction of an adjacent ceiling panel to be provided in the first direction being positioned upward further than the first end portion in the first direction.

2. The ceiling panel according to claim 1 ,

wherein an abutting face is provided on a base end side of the hooking portion so as to face the folded part, the abutting face abutting on an abutted face provided at the hooked portion of an adjacent ceiling panel to be provided in the first direction and restricting movement of the ceiling panels adjacent to each other to a close side in the first direction.

3. The ceiling panel according to claim 1 ,

wherein the hooked portion is in a shape of a plate of which thickness direction is along the first direction, and

wherein the hooked portion comprises a hooked part to which the folded part is hooked and a drop-out prevention part provided in parallel with the hooked part so as to be disposed outward in the first direction further than the hooked part, the drop-out prevention part being provided with an insertion through hole to which the folded part is inserted.

4. The ceiling panel according to claim 1 , further comprising:

a reinforcement member fixed along the second direction almost entirely so as to be disposed along a back face of the first end portion of the panel body in the first direction,

wherein the hooked portion is provided at the reinforcement member.

5. The ceiling panel according to claim 2 ,

wherein the hooked portion is in a shape of a plate of which thickness direction is along the first direction, and

wherein the hooked portion comprises a hooked part to which the folded part is hooked and a drop-out prevention part provided in parallel with the hooked part so as to be disposed outward in the first direction further than the hooked part, the drop-out prevention part being provided with an insertion through hole to which the folded part is inserted.

6. The ceiling panel according to claim 2 , further comprising:

a reinforcement member fixed along the second direction almost entirely so as to be disposed along a back face of the first end portion of the panel body in the first direction,

wherein the hooked portion is provided at the reinforcement member.

7. The ceiling panel according to claim 3 , further comprising:

a reinforcement member fixed along the second direction almost entirely so as to be disposed along a back face of the first end portion of the panel body in the first direction,

wherein the hooked portion is provided at the reinforcement member.

8. The ceiling panel according to claim 5 , further comprising:

a reinforcement member fixed along the second direction almost entirely so as to be disposed along a back face of the first end portion of the panel body in the first direction,

wherein the hooked portion is provided at the reinforcement member.

9. A ceiling panel of which both end portions in a second direction are held on a ceiling base having a long shape extending in a first direction and being provided in parallel spaced in the second direction orthogonal to the first direction, the ceiling panel comprising:

a panel body in a shape of a rectangular flat plate;

a hooked portion provided at a first end portion of the panel body in the first direction; and

a hooking portion to hook on the hooked portion of an adjacent ceiling panel to be provided in the first direction, the hooking portion being provided at a second end portion of the panel body in the first direction,

wherein the hooking portion has a folded part that is formed by being bent into a room side from a tip end portion in an extending direction of an extension portion extending outward in the first direction from the second end portion of the panel body in the first direction, and by being further folded inward in the first direction,

wherein the hooked portion keeps hooking and holding of the folded part of the ceiling panel with the second end portion in the first direction of an adjacent ceiling panel to be provided in the first direction being positioned upward further than the first end portion in the first direction,

wherein the hooked portion is in a shape of a plate of which thickness direction is along the first direction, and

wherein the hooked portion comprises a hooked part to which the folded part is hooked and a drop-out prevention part provided in parallel with the hooked part so as to be disposed outward in the first direction further than the hooked part, the drop-out prevention part being provided with an insertion through hole to which the folded part is inserted.

10. A ceiling panel of which both end portions in a second direction are held on a ceiling base having a long shape extending in a first direction and being provided in parallel spaced in the second direction orthogonal to the first direction, the ceiling panel comprising:

a panel body in a shape of a rectangular flat plate;

a hooked portion provided at a first end portion of the panel body in the first direction;

a hooking portion to hook on the hooked portion of an adjacent ceiling panel to be provided in the first direction, the hooking portion being provided at a second end portion of the panel body in the first direction; and

a reinforcement member fixed along the second direction almost entirely so as to be disposed along a back face of the first end portion of the panel body in the first direction,

wherein the hooked portion is provided at the reinforcement member,

wherein the hooking portion has a folded part that is formed by being bent into a room side from a tip end portion in an extending direction of an extension portion extending outward in the first direction from the second end portion of the panel body in the first direction, and by being further folded inward in the first direction, and

wherein the hooked portion keeps hooking and holding of the folded part of the ceiling panel with the second end portion in the first direction of an adjacent ceiling panel to be provided in the first direction being positioned upward further than the first end portion in the first direction.