Foldable light reflective device for photoflood lamp

A foldable light reflective device (100) for photoflood lamp includes a chuck (10) and a plurality of support rods (20) for mounting a reflective cloth (40). The support rods (20) are arranged along a circumference of the chuck (10) and hinged to the chuck (10), and each support rod (20) has relative unfolded and folded states. A locking mechanism (30) for holding the support rod (20) in the unfolded state is provided between each support rod (20) and the chuck (10). Each locking mechanism (30) includes a swinging member (31) with a middle portion hinged to the chuck (10) and being divided, at a hinge point, into an operation part (311) and a co-operation part (312), the co-operation part (312) of the swinging member (31) having two states of locking and releasing the support rod (20); and a retaining member for restraining the swinging member (31) in the locking state.

TECHNICAL FIELD

The present application relates to the technical field of photoflood lamps, in particular to a foldable light reflective device for photoflood lamp.

BACKGROUND

When taking photos indoors, in order to ensure sufficient brightness of the light of the photoflood lamp, a softbox is usually installed on the photoflood lamp, wherein the light of the photoflood lamp is adjusted by the softbox.

The existing softbox includes a support frame, a reflective cloth and a plurality of support strips. The support frame is installed on the photoflood lamp, the support strips are arranged along a circumferential direction of the support frame and installed on the support frame, and the reflective cloth is installed on the support strips. In order to enable the softbox to be foldable, a locking mechanism is provided between the support strip and the support frame. The support strip is locked to or unlocked from the support frame through the locking mechanism, thereby enabling the softbox to be folded or unfolded.

The locking mechanism includes a spring chamber provided in a chuck, a sliding key, and a spring installed in the spring chamber. The sliding key is provided with a locking buckle and a toggle button, the spring chamber is provided with a sliding groove extending therethrough, and the sliding key is inserted into the spring chamber and connected to the spring. The sliding key is inserted into the spring chamber after extending through the sliding groove, and pressed tightly by the spring, so that the locking buckle on the sliding key maintains a state that extends beyond a support rod locking mechanism, which limits a downward movement position of an clastic support rod.

However, the above locking mechanism has too many components, and the components need to cooperate with each other in use, which not only increases the difficulty of assembly of the components, but also easily causes damage to the locking mechanism.

SUMMARY OF THE INVENTION

Technical Problem

In order to solve the above technical problems, the present application provides a foldable light reflective device for photoflood lamp, which can reduce a difficulty of assembly of the locking mechanism and prolong the service life of the light reflective device.

Technical Solution

The present application provides a foldable light reflective device for photoflood lamp, including a chuck with a through hole defined in a central portion thereof, a plurality of support rods radially distributed around the chuck and a reflective cloth lined on the plurality of support rods; each of the plurality of support rods having one end being hinged with the chuck, and having an unfolded state to support the reflective cloth to form a cover structure and a folded state; a locking mechanism being provided between each of the plurality of support rods and the chuck for maintaining the support rod in the unfolded state, wherein the locking mechanism includes:a swinging member hinged with the chuck at a middle portion thereof, the swinging member being divided into an operation part and a co-operation part at a hinge point thereof, the co-operation part of the swinging member having a state of locking the support rod and a state of releasing the support rod; anda retaining member being configured for restricting the swinging member in the locking state.

Some optional embodiments are provided below, which are not an additional limitation to the above technical solution, and just further supplements or optimizations to the above technical solution. Without technical or logical contradictions, each optional embodiment may be combined to the above technical solution separately, or it may be combined among the optional embodiments.

Optionally, the support rod includes a hinged end and a free end, a mounting groove is defined in an outer periphery of chuck and matches with the hinged end of the support rod, the co-operation part of the swinging member extends into the mounting groove to lock the support rod, and the operation part protrudes out from the chuck.

Optionally, the co-operation part of the swinging member is provided with an open slot for avoiding the support rod, and thus forms two locking arms for locking the support rod, wherein the locking arms are matched with a side wall of the mounting groove and a side face of the support rod in clearance fit.

Optionally, the support rod has a locking block protruding out from each lateral side thereof, and each locking arm bends inwardly to form a locking hook that matches with the locking block.

Optionally, the locking block and the locking hook are respectively provided with a first locking surface and a second locking surface that contact with each other in a locking state, as well as a first arc transition surface and a second arc transition surface that connect the first locking surface and the second locking surface, respectively.

Optionally, a line connecting a contact point between the locking hook and locking block and a hinge point of the support rod is perpendicular to the hinge end of the support rod.

Optionally, the chuck includes a main body and a cover body, the mounting groove is formed at an outer periphery of the main body with two open sides, and the cover body is configured to seal one of the two open sides of the mounting groove.

Optionally, the operation part of the swinging member extends obliquely towards a geometric center of the swinging member along a radial direction of the chuck.

Optionally, the retaining member is a torsion spring.

Optionally, the support rod includes a connecting seat hinged with the chuck and a rod body; one end of the rod body is connected to the connecting seat by plug-in fit, and another end of the rod body extends along a direction away from the chuck; and the co-operation part of the swinging member cooperates with the connecting seat to lock the support rod.

Optionally, the connecting seat is provided with a first shaft; and the chuck includes a main body and a cover body, wherein the cover body and the main body are connected to each other by snap-fit and cooperatively defines a first slot matching with the first shaft.

Optionally, the swinging member is provided with a second shaft; and the chuck includes a main body and a cover body, wherein the cover body and the main body are connected to each other by snap-fit and cooperatively defines a second slot matching with the second shaft.

Optionally, two opposite sides of the connecting seat are provided with mating planes.

Optionally, further including a Bowens-mount through which the light reflective device is connected to the photoflood lamp.

Optionally, the chuck is provided with a positioning step, and an outer edge of the Bowens-mount is placed on the positioning step.

Beneficial Effects

For the foldable light reflective device for photoflood lamp of the present application, the locking mechanism is simple in structure, which can reduce the difficulty of assembly of its components and prolong its service life.

DESCRIPTION OF THE EMBODIMENTS

Technical solutions in the embodiments of the present application will be clearly and completely described below with reference to accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative efforts fall within the protection scope of the present application.

It should be noted that when a component is said to be “connected” to another component, it may be directly connected to another component, or indirectly connected to another component through one or multiple intermediate components; and when a component is said to be “arranged/set/mounted/installed” on another component, it may be directly arranged/set/mounted/installed on another component, or indirectly arranged/set/mounted/installed on another component through one or multiple intermediate components.

Unless otherwise specified and limited, the specific meanings of all technical and scientific terms used in the specification can be specifically understood by persons of ordinary skill in the art. The terms used in the specification of this application is for the purpose of describing specific embodiments only and is not intended to limit this application. The term “and/or” used in the specification includes any and all combinations of one or more related listed items.

As shown inFIG.1toFIG.5, the present application provides a foldable light reflective device100for photoflood lamp, which includes a chuck10, a plurality of support rods20radially distributed around the chuck10, and a reflective cloth40lined on the support rods20. One end of each of the support rods20is hinged with the chuck10. The support rod20has an unfolded state that supports the reflective cloth40to form a cover structure and a folded state.

The chuck10is installed on a lamp holder of the photoflood lamp, and a through hole14is defined at a central portion of the chuck10corresponding to the lamp holder. A size of the through hole14is set according to specific needs of the lamp holder. Unfolding and folding of the support rods20can correspondingly drive the reflective cloth40to unfold and fold. A number of the support rods20may be selected according to actual needs, so that the light reflective device100has different shapes, such as quadrilateral, octagonal, etc.

The support rods20may be internally or externally penetrated relative to the reflective cloth40. Internal penetration means that the support rods20are located at an inner side of the cover structure, and external penetration means that the support rods20are located at an outer side of the cover structure. Generally, the support rods20are fixed by penetrating into collars which are arranged along a radial direction of the reflective cloth40.

The light reflective device100may be either a softbox or a radome. An opening of the cover structure of the softbox is usually equipped with a scrim, which is usually connected to an inner wall of the cover structure by thread gluing.

In order to maintain the support rods20in the unfolded state, a locking mechanism30is provided between each of the support rods20and the chuck10. Specifically, each locking mechanism30includes a swinging member31and a retaining member (not shown). A middle portion of the swinging member31is hinged to the chuck10, and the swinging member31is divided into an operation part311and a co-operation part312at a hinged joint thereof. The co-operation part312of the swinging member31has a state of locking the support rod and a state of releasing the support rod20. The retaining member is configured for restricting the swinging member31in the locking state.

When the swinging member31in the locking state, the retaining member restricts the swinging member31in the locking state. In this situation, the light reflective device100is in the unfolded state. The swinging member31overcomes a resistance of the retaining member and is in the releasing state. By means of rotating the support rods20, all of the support rods20are folded to make the light reflective device100in the folded state. When the support rods20switches from the unfolded state to the folded state, the operation part311of the swinging member31is controlled to drive the co-operation part312to move until the co-operation part312switches to the releasing state. At this time, the support rod20may be folded, that is, the support rod20can rotate around the chuck10to change a position thereof relative to the chuck10.

In this application, the locking mechanism30is simple in structure, which can reduce the difficulty of assembly of its components, and prolong its service life, and the operation is more convenient.

In some embodiments, the retaining member is a torsion spring, which is mounted around a rotary shaft of the swinging member31and acts between the swinging member31and the chuck10. Of course, in other embodiments, the retaining member may also be a compression spring or other reset member, as long as the retaining member can drive the co-operation part312of the swing member31and the support rod20to be in the locking state.

In some embodiments, as shown inFIG.1andFIG.5, each support rod20includes a hinged end21and a free end22. A mounting groove15is defined at an outer periphery of the chuck10and matches with the hinged end21of the support rod20, so as to avoid exposing the hinged end21of the support rod20. The support rod20is allowed to rotate only in a single direction, and thus the mounting groove15is open at a single side.

A specific configuration of the support rod20may refer to one of the embodiments. As shown inFIG.5andFIG.6, the support rod20includes a connecting seat23hinged with the chuck10and a rod body24. One end of the rod body24is connected to the connecting seat23by plug-in fit, and another end of the rod body24extends along a direction away from the chuck10. In some embodiments, the rod body24is made of metal material and has a certain degree of elasticity.

A connecting manner between the rod body24and the connecting seat23refers to one of the embodiments, which may be detachable connection by plug-in fit. Specifically, the connecting seat23defines an inserting hole231therein, and the rod body24may be inserted into the inserting hole231. In some embodiments, in order to fix the rod body24in the inserting hole231, the rod body24and the inserting hole231are connected by an interference fit. Of course, in other embodiments, rivets may be provided between the rod body24and the connecting seat23to fix the rod body24in the inserting hole231.

In this embodiment, as shown inFIG.2andFIG.3, the co-operation part312of the swinging member31extends into the mounting groove15to lock the support rod20, so as to avoid exposing a mating position between the co-operation part312of the swinging member31and the support rod20. At the same time, the operation part311protrudes out from the chuck10, so as to facilitate an operation of the operation part311by the operator.

The operation part311of the swinging part31extends obliquely towards a geometric center of the swinging member311along a radial direction of the chuck10, and thus an angle is formed between the operation part311and the co-operation part312. When the light reflective device needs to be folded, the co-operation part312will lift upwardly by pressing the operation part311, thereby achieving releasing of the support rod20. The operation section311is further provided with anti-skid grains, which can increase a friction force of the operator's hand.

In some embodiments, in order to enhance a strength of the swinging member31and reduce a processing difficulty of the swinging member31, the swinging member31is formed integrally as one piece. Of course, in other embodiments, the swinging member31may also be formed in split-type.

In order to ensure structural stability when the swinging member31locks the support rod20, in this embodiment, as shown inFIG.4andFIG.7, the co-operation part312of the swinging member31is provided with an open slot317for avoiding the support rod20, thereby forming two locking arms315for locking the support rod20. The two locking arms315are located at two opposite sides of the connecting seat23, respectively.

In order to ensure stable movement of the locking arm315within the mounting groove15, referring to one of the embodiments, the locking arm315is in clearance fit with a side wall of the mounting groove15and a side face of the support rod20. Of course, in order to ensure a more stable fit between the locking arm315and the connecting seat23, in other embodiments, the locking arm315is attached to a corresponding side of the connecting seat23and is in a clearance fit with a corresponding side wall of the mounting groove15. Furthermore, two opposite sides of the connecting seat23are provided with mating planes, and each locking arm315is attached to one corresponding mating plane to achieve surface contact between the locking arm315and the connecting seat23.

In this embodiment, as shown inFIG.4,FIG.6andFIG.7, the support rod20has a locking block25protruding out from each lateral side thereof, and each locking arm315bends inwardly to form a locking hook316that matches with the locking block25. Specifically, a line connecting a contact point of the locking hook316and locking block25and a hinge point of the support rod20is perpendicular to the hinge end21of the support rod20, so as to prevent the locking mechanism30from unintentionally unlocking during rotation o the support rod20.

In some embodiments, the locking block25and the locking hook316are respectively provided with a first locking surface251and a second locking surface318that contact with each other in the locking state, as well as a first arc transition surface252and a second arc transition surface319that connect the first locking surface251and the second locking surface251, respectively. When the light reflective device100needs to be opened, the support rod20needs to be rotated reversely. Firstly, the two arc transition surfaces abut against each other, and the co-operation part312of the swinging part31can be pushed up until it reaches the two locking surfaces. This can automatically achieve fitting and locking without the need for manual operation of the swinging part31.

A specific configuration of the chuck10refers to one of the embodiments. As shown inFIG.8, the chuck10includes a main body11and a cover body12. The mounting groove15is formed at an outer periphery of the main body11and has two open sides. The cover body12is used to seal one of the two open sides of the mounting groove15, so as to limit a moving path of the support rod20. Among them, the swinging member31is hinged with the cover body12.

Specifically, the chuck10is annular, with an axial direction and a radial direction perpendicular to the axial direction. The main body11and the cover body12are both annular, and the cover body12and the main body11are attached and fixed to each other in the axial direction of the chuck10.

In some embodiments, as shown inFIG.4, the connecting seat23is provided with a first shaft26. The first shaft26and the connecting seat23are formed integrally or separately. The swinging member31is provided with a second shaft32, which is formed integrally or separately with the swinging member31. The cover body12and the main body11are connected to each other by snap-fit, and cooperatively define a first slot16matching with the first shaft26and a second slot17matching with the second shaft32.

During assembly of the light reflective device100, firstly, the connecting seat23and the swinging member31are pre-assembled at predetermined positions of the main body11, and then the first shaft26and second shaft32are respectively restricted in corresponding first slot16and second slot17by the cover body12, thereby achieving the aim of facilitating the assembly of the aforementioned components.

According to the needs of the photoflood lamp, in some embodiments, as shown inFIG.2andFIG.8, the light reflective device100further includes a Bowens-mount50through which the light reflective device100is connected to the photoflood lamp.

In order to facilitate the installation of the Bowens-mount50and the chuck10, referring to one of the embodiments, the chuck10is provided with a positioning step13, and an outer edge of the Bowens-mount50is placed on the positioning step13, so as to quickly positon the installation positions of the Bowens-mount50and the chuck10. An inner diameter of the main body11is less than an inner diameter of the cover body12, so as to form the positioning step13between the cover body12and the main body11.

Technical features of the above embodiments may be combined arbitrarily. To make the description concise, it does not describe all possible combinations of the technical features in the above embodiments. However, as long as the combinations of these technical features are not contradictory, they should be considered within the scope of this specification. When the technical features in different embodiments are shown in the same figure, it can be seen that this figure discloses an embodiment of a combination of the various embodiments.

The above embodiments only express several embodiments of the present application, which are described in details, but this cannot be understood as a limitation of the scope of the patent application. It should be pointed out that for those ordinary skilled in the art, any modifications and improvements made without departing from the spirit and principles of the present application should be within the scope of the present application.