Foldable soft box umbrella tray and soft box

1. A foldable soft box umbrella tray, comprising:

an annular base ( 1 ) which is able to be connected to a light source and comprises a first body ( 11 ) with a support rod jack ( 2 ) and a second body ( 12 ) which is spliced with the first body ( 11 ) to form a ring;

a movable disc body ( 3 ) movably connected to the annular base ( 1 ) via a switching mechanism ( 6 ) and provided with the support rod jack ( 2 ), wherein

the switching mechanism ( 6 ) comprises a first cross arm ( 61 ) and a second cross arm ( 62 ) movably connected to the first body ( 11 ) and the movable disc body ( 3 ) respectively, and a connecting shaft ( 63 ), and the connecting shaft ( 63 ) passes through the first cross arm ( 61 ) and the second cross arm ( 62 ) and is rotatably connected thereto; and

the movable disc body ( 3 ) is able to rotate between a contracted position and a working position, and in the working position, the movable disc body ( 3 ) and the second body ( 12 ) lie in a same plane.

2. The foldable soft box umbrella tray according to claim 1 , wherein the first body ( 11 ) has a first abutting end face ( 111 ), the movable disc body ( 3 ) has a second abutting end face ( 32 ), the first abutting end face ( 111 ) and the second abutting end face ( 32 ) are fitted together in the working position, and the first cross arm ( 61 ) and the second cross arm ( 62 ) are hidden in the first body ( 11 ) and the movable disc body ( 3 ).

3. The foldable soft box umbrella tray according to claim 2 , wherein the first cross arm ( 61 ) is movably connected to the first body ( 11 ) via a first guide shaft ( 611 ) and is rotatably connected to the movable disc body ( 3 ) via a first switching shaft ( 612 ); and the second cross arm ( 62 ) is movably connected to the movable disc body ( 3 ) via a second guide shaft ( 621 ) and is rotatably connected to the first body ( 11 ) via a second switching shaft ( 622 ).

4. The foldable soft box umbrella tray according to claim 3 , wherein a first stroke groove ( 64 ) for rolling of the first guide shaft ( 611 ) is formed in the first body ( 11 ), and a second stroke groove ( 65 ) for rolling of the second guide shaft ( 621 ) is formed in the movable disc body ( 3 ); the first cross arm ( 61 ) has a first noumenon ( 613 ), a first protrusion ( 614 ) and a first extension ( 615 ) located at two ends of the first noumenon ( 613 ), the connecting shaft ( 63 ) is provided on the first noumenon ( 613 ), the first guide shaft ( 611 ) is provided on the first protrusion ( 614 ), and the first switching shaft ( 612 ) is provided on the first extension ( 615 ); the second cross arm ( 62 ) has a second noumenon ( 623 ), a second protrusion ( 624 ) and a second extension ( 625 ) located at two ends of the second noumenon ( 623 ), the connecting shaft ( 63 ) is provided on the second noumenon ( 623 ), the second guide shaft ( 621 ) is provided on the second protrusion ( 624 ), and the second switching shaft ( 622 ) is provided on the second extension ( 625 ).

5. The foldable soft box umbrella tray according to claim 4 , wherein a groove one ( 112 ) for accommodating the first protrusion ( 614 ) and a slot one ( 113 ) for accommodating the second extension ( 625 ) are formed in the first body ( 11 ), the groove one ( 112 ) and the slot one ( 113 ) are in communication and are open at the first abutting end face ( 111 ); a groove two ( 33 ) for accommodating the second protrusion ( 624 ) and a slot two ( 34 ) for accommodating the first extension ( 615 ) are formed in the movable disc body ( 3 ), the groove two ( 33 ) and the slot two ( 34 ) are in communication and are open at the second abutting end face ( 32 ), and are in opposition to the slot one ( 113 ); a junction of the first protrusion ( 614 ) and the first body ( 613 ) forms a first recessed groove ( 616 ) for accommodating the second switching shaft ( 622 ).

6. The foldable soft box umbrella tray according to claim 1 , wherein the connecting shaft ( 63 ) is provided in a radial direction of the first body ( 11 ) or the movable disc body ( 3 ); the first cross arm ( 61 ) has a first plane ( 617 ), the second cross arm ( 62 ) has a second plane ( 627 ), the first plane ( 617 ) being able to abut against the first body ( 11 ) and the second plane ( 627 ) being able to abut against the movable disc body ( 3 ) when the first body ( 11 ) and the movable disc body ( 3 ) are unfolded; a quantity of the first cross arm(s) ( 61 ) and/or the second cross arm(s) ( 62 ) is two or more, the first cross arm(s) ( 61 ) and the second cross arm(s) ( 62 ) are provided alternately, and side faces of the first cross arm(s) ( 61 ) and the second cross arm(s) ( 62 ) abut with each other.

7. The foldable soft box umbrella tray according to claim 1 , further comprising a locking unit ( 4 ) configured for locking or unlocking between the movable disc body ( 3 ) and the second body ( 12 ), the locking unit ( 4 ) comprising a locking member ( 41 ) elastically connected to the second body ( 12 ), a toggle member ( 42 ) connected to the locking member ( 41 ), and a limit card slot provided on the movable disc body ( 3 ), wherein the locking member ( 41 ) is able to extend into the limit card slot so as to lock the second body ( 12 ) and the movable disc body ( 3 ); the second body ( 12 ) is provided with a sliding groove ( 121 ) extending in a radial direction, an elastic member ( 43 ) is connected in the sliding groove ( 121 ), and the locking member ( 41 ) is connected to the elastic member ( 43 ); an end of the locking member ( 41 ) forms a guide surface ( 411 ) which extends obliquely from inside outwards in a direction of rotation, close to the second body ( 12 ), of the movable disc body ( 3 ).

8. The foldable soft box umbrella tray according to claim 1 , wherein the annular base ( 1 ) is of an annular shape, the first body ( 11 ) is semi-circular or nearly semi-circular, and the movable disc body ( 3 ) is semi-circular or nearly semi-circular; a maximum outer diameter of the second body ( 12 ) is smaller than a minimum outer diameter of the first body ( 11 ); and an inner side wall of the movable disc body ( 3 ) is able to be concavo-convexly embedded with the second body ( 12 ).

9. The foldable soft box umbrella tray according to claim 1 , wherein the second body ( 12 ) is detachably connected to a stopper ( 122 ) which is able to abut against the movable disc body ( 3 ) to limit a rotary stroke of the movable disc body ( 3 ).

10. A soft box, comprising the umbrella tray according to claim 1 , a plurality of support rods, and a soft light cloth, the support rod comprising a ball head support leg ( 5 ) and a support rod body, wherein the first body ( 11 ) and the movable disc body ( 3 ) are circumferentially provided with a ball head groove ( 21 ) for clamping the ball head support leg ( 5 ) and a movable groove ( 22 ) in communication with the ball head groove ( 21 ), the movable groove ( 22 ) is flared, and a groove wall of a flared portion of the movable groove ( 22 ) gradually increases from a position radially corresponding to the ball head groove ( 21 ).