Handheld lighting device with adjustable lighting direction

The present disclosure provides a handheld lighting device with adjustable lighting direction. The handheld lighting device has a housing assembly having a handle and a bracket with a steering groove, a lamp head assembly supported by the housing assembly and including a lamp head main shell and a rotating leg extending from the main shell toward the housing assembly, the rotating leg being received in the steering groove such that the lamp head assembly is deflected relative to the housing. The handheld lighting device is in a first lighting state when the direction of lighting of the lens of the lamp head assembly is in the same direction as the lengthwise of the handle. The handheld lighting device is in a second lighting state when the direction of lighting of the lens of said lamp head assembly deviates from the lengthwise direction of the handle.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims priority to Chinese Patent Application No. 202311487874.X, filed on Nov. 9, 2023, the content of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of lighting devices, and in particular to a handheld lighting device that facilitates the user to adjust the lamp head so that it shines in any irradiation direction.

BACKGROUND

Handheld lighting devices have become indispensable lighting tools in daily life, and the handheld lighting devices are widely used in maintenance, sports, rock climbing, camping, running and other scenarios. Flashlights are common mobile lighting device. The flashlight usually shines only in a straight line in the direction of the main body of the flashlight.

In the related technology, the handheld lighting device includes a housing assembly and a lamp head assembly with a lens mounted on the housing assembly, and the lamp head assembly is used to emit light by the lens, and people use the light emitted from the lamp head assembly to achieve the purpose of lighting in different application scenarios. However, the position of the lamp head assembly relative to the shell assembly in the related technology is fixed, and the use of a single form results in a small lighting range of the handheld lighting device, which causes inconvenience in use. For this reason, how to effectively optimise the form of use of the handheld lighting device in order to expand the lighting range of the handheld lighting device has become an issues to be solved.

SUMMARY

In view of this, the present disclosure is designed to provide a handheld lighting device, which can solve the defect that a single form of use of the handheld lighting device in the related technology leads to a small lighting range of the handheld lighting device.

The handheld lighting device with adjustable lighting direction comprises a housing assembly, a lamp head assembly and a circuit board assembly, the housing assembly having a handle in which a battery is provided and the lamp head assembly which is compatible with the handle, the handle having an accommodating cavity extending and recessed in a length direction of the handle, a portion of the lamp head assembly received in the accommodating cavity, and a light-transmitting lens located in a direction of the lamp head assembly away from the accommodating cavity, the circuit board assembly located in the accommodating cavity and being electrically connected to the lamp head assembly, and the lamp head assembly being rotatable with respect to the housing assembly, so as to make the lighting device has a first lighting state and a second lighting state, the lighting device being in the first lighting state when the plane in which said light-transmitting lens surface is located is parallel to the plane in which a window of the accommodating cavity is located, and the lighting device being in the second lighting state when the plane in which said light-transmitting lens surface is located intersects the plane in which the window of the accommodating cavity is located.

DESCRIPTION OF EMBODIMENTS

Embodiment of the present disclosure will be described in detail in conjunction with the drawings. It should be noted that the figures are illustrative rather than limiting. The figures are not drawn to scale, do not illustrate every aspect of the described embodiment, and do not limit the scope of the present disclosure.

In the disclosure, the terms “first” and “second” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” can explicitly or implicitly include one or more of the features. In the description of the invention, “multiple” means two or more, unless otherwise specifically defined.

It is appreciated that the shape of each part described below is “rectangular”, “square” indicates a rough shape, and there may be rounded corners between adjacent sides or no rounded corners. Furthermore, the azimuth relationship qualifiers such as “parallel”, “vertical”, “consistent direction”, “same direction”, “opposite direction”, etc. used by each component described below indicate the approximate orientation that allows for a certain error.

Referring toFIGS.1to10, a handheld lighting device1for lighting is provided. The handheld lighting device1includes a housing assembly10, a lamp head assembly20, and a circuit board assembly30. The housing assembly10has a handle110in which a battery is provided and the lamp head20assembly which is compatible with the handle110. The handle110has an accommodating cavity111with one window1110. The lamp head assembly20is only partially housed in the accommodating cavity111, and the main body of the lamp head assembly20is mounted on the handle110in the direction of the window towards the accommodating cavity111. The light head assembly20has a light-transmitting lens25for transmitting light from a LED220, and the circuit board assembly30is disposed within the accommodating cavity111and is electrically connected to the light head assembly20. The light head assembly20may rotate relative to the handle110to enable the handheld lighting device1to have a first and a second lighting state. In the first lighting state, the plane in which the light-transmitting lens is located and the plane in which the window1110of the holding cavity111is located, which are parallel or overlapping each other. In the second lighting state, the lamp head assembly20deviates, and the plane where the light-transmitting lens25is located intersects with the plane where the window containing the cavity111is located.

The housing assembly10serves as a shell body of the handheld lighting device1and may be reasonably selected according to the actual needs. In this embodiment, the housing assembly10is shaped in the form of a cylinder or the like, when used as the handle110for easy grip. One end of the handle110is an opening window for housing the lamp head assembly20and the circuit board assembly30. The material of housing component10is not limited to plastic or metal, and the specific shape of the handle110is not limited here. Reasonable selection or design may be made according to actual needs.

The accommodating cavity111of the handle110is a hollow region, and the specific shape of the accommodating cavity111is not limited in this embodiment, but may be reasonably designed according to actual needs. The cross-section of the holding cavity111along a direction perpendicular to its extension may be round, oval or rectangular, etc.

The lamp head assembly20serves as a light-emitting unit of the handheld lighting device1, only a portion of which is disposed within the accommodating cavity111of the handle110. In this way, the lamp head assembly20may deflect the lamp housing assembly10over a right distance and direction.

The lamp head assembly20has the light-transmitting lens25, the light-transmitting lens25being used for a light source to pass through the surface of the lens for irradiating a longer distance and for improving lighting efficiency. Meanwhile, the light-transmitting lens25may also protect the light source. In this embodiment, the lens25is disposed at the top of the lamp head assembly20. In the first lighting state, the lens is substantially perpendicular to the handle110.

The circuit board assembly30serves as the electrical control body of the handheld lighting device1, which electrically controls the operation of the lamp head assembly20, lighting up or extinguishing the light source of the lamp head assembly20.

In the first lighting state, the plane in which the light-transmitting lens25is located is parallel to the plane in which the window1110of the accommodating cavity111is located, at which time the light projected from the light-transmitting lens25of the headlamp assembly20is substantially along the direction parallel to the extension direction of the accommodating cavity111, or at which time the direction of irradiation projected from the light-transmitting lens25of the headlamp assembly is substantially perpendicular to the plane in which the window of the accommodating cavity111is located. In fact, the term window herein refers to the open of the accommodating cavity111.

In the second lighting state, the plane in which the transmitting lens25is located intersects the plane in which the window of the accommodating cavity111is located, at which point the light projected from the transmitting lens of the lamp head assembly20is at an angle substantially along the direction of extension with the accommodating cavity111. In this embodiment, the angle has a maximum angle of 90°.

Based on the handheld lighting device1in the embodiment of the present disclosure, by designing the lamp head assembly20to be rotatable relative to the handle110of the housing assembly10, the handheld lighting device1has different first lighting states and second lighting states, which may be adjusted by the user according to the needs of the scene in which the user is actually located.

Referring toFIG.4, specifically, the housing assembly10includes a housing11which serves as the handle110and a bracket12. The bracket12matches and is disposed within the accommodating cavity111of the housing11. The bracket12is provided with a steering groove121in its lateral orientation. Only a portion of the lamp head assembly20extends into the steering groove121and is movably coupled to the bracket12via a damping shaft44such that the lamp head assembly20rotates in the lateral orientation to the bracket12.

In the embodiment, in order to make the structure of the lighting device1more reliable, a letting window112is provided at a certain place where the accommodating cavity111is surrounded by the wall of the housing11, and the letting window112being interconnected with the accommodating cavity111. In this embodiment, in order to make the structure of the lighting device1more reliable, a letting window112is provided somewhere where the accommodating cavity111is surrounded by the wall of the housing11. In other words, the letting window112is a notch in the lateral orientation of the housing assembly10. The notch is interconnected with the accommodating cavity111and partially overlaps with the steering groove121of the bracket12.

The steering groove121of the bracket12has three grooves including a first groove1211, a second groove1212and a third groove1213. The first groove1211is located between the second groove1212and the third groove1213, and the grooves adjacent to each other are interconnected. The length of the first groove1211along the length of the handle110is greater than the length of the second groove1212and the third groove1213.

While the housing11and the bracket12are assembled together, the first groove1211overlaps the letting window112such that the first groove1211is exposed so as to be visible. The second groove1212and the third groove1213are covered by the walls of the housing11. The first groove1211, the second groove1212and the third groove1213are all opened in a lateral orientation of the bracket12such that the lamp head assembly20may be rotated in that lateral orientation direction relative to the length of the handle110.

In the present disclosure, the circuit board assembly30is disposed within the accommodating cavity111. The circuit board assembly30is supported by the bracket12and is secured within the housing11to electrically connect the battery and lamp head assembly20. The circuit board assembly30has a circuit board31, a conductive element32, a positive element33and a negative element34electrically connected to the battery in the housing11, and an insulating sleeve35disposed over the conductive element32.

The lamp head assembly20includes a lamp head main shell24, the lens25disposed on the lamp head main shell24, a cover26for protecting the lens25, an LED circuit board22and a first conductive unit21disposed on the LED circuit board22for electrically connecting the circuit board assembly30. The lamp head main shell24has a side wall240, a cavity241surrounded by the side wall240and a rotating leg243extending from the side wall240in a direction away from the lens25and towards the steering groove121. The rotating leg243may be inserted into the first groove1211and rotated up to 90° by means of a connecting assembly40and centered thereon. The rotating leg243has a positioning hole2431at the end for receiving the connecting assembly40. The LED circuit board22and the first conductive unit21is received in the cavity241of the lamp head main shell24.

In the present disclosure, the connecting assembly40includes the damping shaft44and an electric connecting shaft component401. One end of said damping shaft44is disposed in the third groove1213and the other end is disposed in a positioning hole2431in the rotating leg243. Similarly, one end of the electric connecting shaft component is disposed in the second groove1212and the other end is disposed in a positioning hole2431in the rotating leg243. In the embodiment, one end of the electric connecting shaft component is a first insulating seat41disposed in the second groove1212, the other end is a second insulating seat42disposed in a positioning hole2431in the rotating leg243. An electrically conductive shaft43is wrapped by two insulating seats41and42. In order to avoid mutual wear, a sealing ring45is located between the two insulating seats41and42. The conductive shaft43is a metal cylinder which may be rotated relative to the two insulating seats41and42. The damping shaft44is basically not in direct contact with the electric connecting shaft component and do not interfere with each other. The damping shaft44has the shape of a polygonal cylinder that has diagonal prisms with a diameter distance between them that is greater than a distance between the mutually parallel prisms. In the embodiment, the damping shaft44is a six-sided prismatic cylinder or an eight-sided prismatic cylinder made of a polymer material or plastic or the like with good deformability property.

It follows that while assembled, the lamp head assembly20is designed to change the direction of lighting of the lens25by means of the damping shaft44, and is electrically connected by the electric connecting shaft component401on the other side, and the structure is sealed to protect against moisture. In other words, the damping shaft44and the electrical connection shaft component401are installed on both sides of the rotating leg243, respectively. The bracket12is assembled with the handle110of the column type, and the first groove1211overlapping the window1110is exposed in a lateral orientation. The lamp head assembly20is supported by the bracket12or the housing11of the housing assembly10, depending on whether the bracket may be fully stowed by the housing11. The rotating leg243projecting from the lamp head assembly20extends into the first groove1211to be received. In the first lighting state, the rotating leg243is completely accommodated in the first groove1211that the lens25of the lamp head assembly20is perpendicular to each other and the lengthwise direction of the handle110. In other words, both the lens assembly20and the handle are maintained in the lengthwise direction, and the light emitted from the lens25is in the same lengthwise direction as that of the handle110. In the second lighting state, the rotating leg243at least partially protrudes from the first groove1211such that the direction of light from the lens25is offset from the direction of the length of the handle110, so that the user may adjust the direction of illumination of the lamp head with a maximum adjustment angle of no more than 90°. Certainly, the lighting angle may be adjusted, depending on the angle at which the rotating leg243of the lamp head deviates from the length direction of the first groove1211.

Furthermore, the light head assembly20is in the first lighting state or the second lighting state, the LED circuit board22of the lamp head assembly20is sequentially connected to the circuit board assembly30and battery inside the housing assembly10via the first conductive unit21and the electric connecting shaft component401housed in the second groove1212. Specifically, the first insulating seat41and the second insulating seat42are socketed at each end of the electrically conductive shaft43, respectively. These three parts are rotatable with respect to each other. The first conductive unit21extends along the length of the rotating leg243toward and is connected to the electrical conduction shaft43. In the embodiment, the first conductive unit21is a metal conductive post which is wrapped in a protective sleeve23piercing the second insulating seat42electrically connecting the electrically conductive shaft43. The second insulating seat42rests against the rotating leg243and rotates synchronously with the rotating leg243. The conductive element32pierces the first insulating seat41and the bracket12for electrically connecting to the electrically conductive shaft43and the circuit board assembly30, respectively. The above circuit connection structure is reliable against moisture.

On the other side, one end of the damping shaft44is snapped into the third groove1213of the bracket12, and the other end is snapped into a positioning hole2431on the rotating leg243. The damping shaft44rotates synchronously with the rotation of the rotating leg243. In order that the lamp head assembly20may be maintained in different lighting directions, the peripheral surface of the damping shaft44is frictionally seated in the third groove1213. Specifically, the damping shaft44has the shape of a polygonal prism that has diagonal prisms with a diameter distance between them that is slightly greater than the distance between the mutually parallel prisms. The damping shaft44is a six-sided prism or an eight-sided prism.

The third groove1213has a substantially rectangular slot hole, a width of the rectangular slot hole being substantially equal to the distance between the parallel flutes of the damping shaft44. When the lamp head main body24operates in different angle directions, the lamp head main body24rotates using the damping shaft44as the rotation point. During the rotation process, due to the damping shaft44having multiple parallel edges, these edges are stuck by the third groove1213. When the damping shaft44bears an external force greater than the frictional force borne by the edge, it rotates to another frictional engagement state, so that the lighting direction of the lamp head assembly20is adjusted.

The first insulating seat41and the second insulating seat42may be made of an insulating material such as plastic, rubber or the like. Similarly, the damping shaft44may be made of an abrasion resistant deformable material such as plastic or rubber. The damping shaft44may be fixedly connected to the bracket12by means of plugging or gluing, etc. The damping shaft44is adapted to generate torque to increase damping.

The handheld lighting device1is in the first lighting state, then the lighting direction of the lamp head assembly20is substantially the same as the length direction of the handle110. User twists the lamp head assembly20to offset it to one side of the housing assembly10, the lamp head assembly20rotates to drive the damping shaft44to rotate. Simultaneously, on the other side of the end of the rotating leg243, the electric connecting shaft component401rotates, so that the lighting direction of the lamp head assembly deviates from the length direction of the handle110to put the lighting device10in the second lighting state, and the angle between the rotating leg243and the length direction of the handle110is not more than 90°, which already meets the needs of the lighting device1in multiple application environments.

The circuit board assembly30includes the positive element33and the negative element. One end of the positive element33is fixedly connected to the housing11, and the other end of the positive element33is in contact with a positive contact of the circuit board31. One end of the negative element34is fixedly connected to the housing11, and the other end of the negative element34is in contact with a negative contact of the circuit board31. The positive contact of the circuit board31is electrically connected to the conductive element32, and the negative contact of the circuit board31is in contact with the bracket12.

The positive element33may, but is not limited to, be a spring or a shrapnel. The positive element33is removably connected to the housing11, or it may be fixedly connected to the housing11by one or more of snap-fit, screw-fit, or plug-fit. In the case of a non-detachable connection between the positive element33and the housing11, the positive element33may be, but is not limited to, fixedly connected to the housing11by means of a glued connection. The negative element34may be a spring or a shrapnel which having a similar configuration to the positive element33.

Further in other embodiment, the sealing ring45may also be mounted between the conductive shaft43and the second insulating seat42. The sealing ring45may be a rubber seal or a silicone seal. The sealing ring45provides good water and dust resistance, and may also increase the damping of the rotation of the lamp head assembly20.

The handheld lighting device1further comprises a hooker50, the hooker50being detachably connected to the housing assembly10. The hooker50may be fixedly connected to the housing11of the housing assembly10by means of locking screws, whereby the user may hook the entire handheld lighting device1. For example, the user's belt with the aid of the hooker.

In the present disclosure, the lens25of the lamp head assembly20is configured to more efficiently diffuse light from the LED circuit board. The plane in which the lens25is located is substantially perpendicular to a center axis of the lamp head assembly20. This means that the lens25is substantially perpendicular to the lengthwise direction of the handle110. In the first lighting state, the center axis of the lamp head assembly20is substantially parallel to the lengthwise direction of the handle110, so the lengthwise direction of the handle110is the lighting direction of the lamp head assembly20.

The lamp head assembly20is rotated to one side with the damping shaft44such that the rotating leg243is displaced from the first groove1211. Since the damping shaft44is polygonal in shape such that the lamp head assembly20may remain resting in different positions relative to the handle110. This means that the direction of lighting of the lens25changes and the lighting device1is in a second lighting state.

While the present disclosure has been described with reference to a specific embodiment, the description of the disclosure is illustrative and is not to be construed as limiting the disclosure. Various of modifications to the present disclosure can be made to the exemplary embodiment by those skilled in the art without departing from the true spirit and scope of the disclosure as defined by the appended claims.