An asymmetric light source curved screen pendant lamp

Abstract

The application relates to a curved screen hanging lamp of an asymmetric light source, comprising a support assembly, one end of the support assembly being provided with a swingable lamp holder, the other end being assembled on a display, the inside of the lamp holder being provided with an angle-adjustable optical mirror and a light source, the optical mirror being used for dividing the light emitted by the light source into a first functional light beam and a second functional light beam; wherein the first functional light beam is guided to project to a preset working area in front of the display to provide working illumination, and the second functional light beam is guided to project to form background ambient light; the background ambient light is used for improving the brightness of the surrounding environment of the preset working area, so as to cooperatively reduce the brightness contrast between the working area and the surrounding environment with the first functional light beam. The optical mirror limits the light emitted by the light source, so that part of the light emitted by the light source illuminates the working area in front of the display, and the other part of the light is projected above the lamp holder to manufacture ambient light, so as to reduce the occurrence of visual fatigue of a user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screen hanging lamp, in particular to a curved screen hanging lamp with asymmetric light source. BACKGROUND

[0002] With the popularity of curved screens in office, entertainment, design and other scenarios, curved screen hanging lamps as auxiliary devices to improve user experience are increasingly in demand.

[0003] The existing technology involves a screen hanging lamp applied to a curved screen, which is provided with a lamp holder, an arc-shaped lamp tube formed by stamping inside the lamp holder, and a plurality of LED lamp beads. The screen hanging lamp can emit light more uniformly by performing uniform light processing on the LED lamp beads.

[0004] However, the above-mentioned and existing hanging lamps can provide a wide range of illumination, but symmetrical light is easy to directly illuminate the curved screen and the user's eyes, resulting in screen reflection and affecting the use effect. In addition, long-term use of the hanging lamp in the dark can also cause visual fatigue of the user. Especially for large-size curved screens, the changing curvature makes it more difficult to control the traditional asymmetric light path, and the reflection problem is particularly prominent. SUMMARY

[0005] The present application provides a curved screen hanging lamp with asymmetric light source, which can solve the problem of existing curved screen hanging lamps with asymmetric light source that the light emitting range is too symmetrical, resulting in screen reflection and increasing the user's visual fatigue.

[0006] The technical solution of the present application is as follows: a curved screen hanging lamp with asymmetric light source, comprising:

[0007] A support assembly is provided with a swingable lamp holder at one end and is assembled on a display at the other end;

[0008] An optical mirror with adjustable angle and a light source are arranged inside the lamp holder, the optical mirror is used to divide the light emitted by the light source into a first functional light beam and a second functional light beam; wherein:

[0009] The first functional light beam is guided to project onto a preset working area in front of the display to provide working illumination;

[0010] The second functional light beam is guided to form background ambient light; the background ambient light is used to improve the brightness of the environment around the preset working area, so as to reduce the brightness contrast between the working area and the surrounding environment in cooperation with the first functional light beam.

[0011] By adopting the above scheme, the light emitted by the light source can pass through the optical mirror piece, and the light emitting angle of the light emitted by the light source is limited, so that part of the light emitted by the light source is irradiated at a certain angle in front of the display screen, illuminating the working area located in front of the display, and at the same time, the part of the light does not irradiate the display, reducing the occurrence of screen reflection. In addition, another part of the light is projected above the lamp holder to create ambient light to reduce the occurrence of visual fatigue of the user.

[0012] In one embodiment of the present application, the support assembly comprises:

[0013] The fixed part comprises a placing rack, a rotating joint and a limiting joint, the rotating joint is rotatably connected to one end of the placing rack and the limiting joint respectively through damping rotating shafts, and the lower surface of the placing rack is provided with a protrusion configured to form a limiting gap with the limiting joint after the limiting joint is deflected at an angle, so that the placing rack is clamped on the display;

[0014] The lamp holder is rotatably assembled at the other end of the placing rack through a damping rotating shaft, so that the lamp holder can be deflected at an angle in the horizontal plane.

[0015] By adopting the above scheme, by setting the rotating joint, the device can be stably placed on different shaped displays by deflecting the rotating joint to adjust the angle of the limiting joint. In addition, since the angle between the protrusion and the lamp holder is fixed, and the protrusion is attached to the light emitting surface of the display, the distance between the lamp holder and the display is fixed. By limiting the light emitting angle and range of the light source, the phenomenon of light reflection on the display is avoided.

[0016] In one embodiment of the present application, a plurality of light emitting cavities are arranged at intervals along the length direction of the lamp holder inside the lamp holder, the inner walls of the two sides of the light emitting cavity are respectively provided with arc segments and straight segments with partial circular trajectories, the two arc segments are symmetrically arranged along the diagonal lines of the light emitting cavity, the arc segments are provided with first reflecting films, and the light source comprises a lamp bead assembly arranged on the straight segments.

[0017] By adopting the above scheme, when the light source emits light, the arc segments are arranged on the inner walls of the light emitting cavities, and the first reflecting films are arranged on the arc segments, so that the light emitted by the light source on the side can be reflected on the arc segments. After the reflected light is reflected twice by the optical mirror piece, it can finally be emitted in front of the display screen, improving the utilization rate of light and avoiding the influence of stray light emitted by the light source on the side on the use of the whole lamp.

[0018] In one of the embodiments of the present application, the lamp bead assemblies are arranged in two groups, and the two groups of lamp bead assemblies are respectively arranged on the two flat sections and close to the arc-shaped section. The inner wall of one side of the light-emitting chamber is provided with a rotating member. The rotating member is located at the middle part of one side of the optical mirror and is connected with the optical mirror. The optical mirror is rotatably arranged in the light-emitting chamber and forms an angle with the horizontal plane through the rotating member. The rotating member is located at the center of the circle where the arc-shaped section is located.

[0019] By adopting the above scheme, the two groups of lamp bead assemblies are arranged on the two sides of the optical mirror, so that the light emitted by the two groups of lamp bead assemblies respectively irradiates the two sides of the optical mirror. The light emitted by the lamp bead assemblies is guided through the optical mirror, and the two beams of light can be used as ambient light and working light for illumination, so as to alleviate the visual fatigue of the user and limit the illumination range of the working light.

[0020] In one of the embodiments of the present application, the optical mirror is a sheet-shaped member, and the two sides of the optical mirror are respectively provided with a reflective film layer. The upper and lower sides of the light-emitting chamber are respectively provided with a first light-transmitting plate and a second light-transmitting plate. The side of the first light-transmitting plate away from the light-emitting chamber is provided with a diffuse reflection layer, and the diffuse reflection layer is located above the light-emitting chamber.

[0021] By adopting the above scheme, the reflective film layers are arranged on the two side surfaces of the optical mirror, and the two groups of lamp bead assemblies are matched, so that the light emitted by the two groups of lamp bead assemblies respectively irradiates the two reflective film layers and is reflected on the reflective film layers. The two groups of lamp bead assemblies can emit upwards and downwards along the lamp holder, respectively, to be used as ambient light and working light for illumination.

[0022] The optical mirror includes an integrally formed optical element, which has:

[0023] a first optical function area having an asymmetric reflective surface or refractive surface for converging and deflecting a part of the initial light to form the first functional light beam; and

[0024] a second optical function area having a surface structure for scattering or large-angle deflection for guiding another part of the initial light to form the second functional light beam.

[0025] By adopting the above scheme, the optical element is arranged, so that the light beam can be divided into the first functional light beam and the second functional light beam after passing through the optical element, thereby meeting the needs of the user.

[0026] In one of the embodiments of the present application, the lamp bead assemblies are arranged in a group, the group of lamp bead assemblies is arranged on the inner wall of one side of the light emitting chamber, the optical mirror is a light guide plate, a second reflective film is arranged on the inner wall of the other side of the light emitting chamber away from the lamp bead assemblies, a light splitting microstructure is arranged on one side surface of the optical mirror, and the light splitting microstructure is used for reflecting part of the light emitted by the lamp bead assemblies, so that part of the light is reflected to the lower side of the lamp holder, and the other part is projected on the upper side of the lamp holder.

[0027] By adopting the above scheme, the lamp bead assemblies are arranged as the light source, the group of lamp bead assemblies is arranged on the inner wall of one side of the light emitting chamber, the light emitted by the lamp bead assemblies is irradiated on the light splitting microstructure of the optical mirror, the light beam is subjected to the light splitting effect of the light splitting microstructure, part of the light emitted by the light source is reflected to the front of the display screen to meet the working needs, and the other part is projected on the upper side of the lamp holder as the ambient light to relieve the visual fatigue of the user. The device can meet the needs of the light emitting angle and work lighting and ambient light supplementing at the same time by arranging the group of lamp bead assemblies, and is more energy-saving and environment-friendly.

[0028] In one of the embodiments of the present application, the light splitting microstructure comprises a plurality of V-shaped grooves arranged at intervals along the width direction of the optical mirror, and a gap extending along the width direction of the optical mirror is formed between two adjacent V-shaped grooves.

[0029] One end of the optical mirror on one side close to the lamp bead assemblies is defined as the low beam end, the other end is defined as the high beam end, and the widths of the plurality of gaps gradually decrease from the low beam end to the high beam end.

[0030] By adopting the above scheme, a plurality of V-shaped grooves arranged at intervals are arranged on the side of the optical mirror close to the light source, that is, the light incident surface. When the light is irradiated on the V-shaped grooves, the angle of the V-shaped grooves is limited, so that the light can be reflected twice in the V-shaped grooves and then emitted from the light incident surface of the optical mirror, thereby achieving the effect of reflecting the light. Meanwhile, the plurality of V-shaped grooves are arranged at intervals, so that the density of the V-shaped grooves gradually increases from the low beam end to the high beam end. As a result, the reflected part of the light with a large light flux incident on the low beam end is small, and the reflected part of the light with a small light flux incident on the high beam end is large, so that the device can reflect the working light more uniformly.

[0031] In one of the embodiments of the present application, the other side of the optical mirror is provided with an electrically controlled dimming film.

[0032] When the electrically controlled dimming film is powered on, the electrically controlled dimming film is in a transparent state.

[0033] When the electrically controlled dimming film is not powered on, the electrically controlled dimming film changes to an opaque state.

[0034] By adopting the above scheme, the electric control light control film can adjust the transparent state of the other side of the optical mirror, the electric control light control film is not powered, so that the device can not use ambient light, the light will not be emitted from the other side of the optical mirror, thereby realizing the light emitting effect of multiple modes of the device.

[0035] In one embodiment of the present application, the placing rack is internally provided with a cooling fan; an airflow channel is formed on the placing rack, and the cooling fan is configured to guide external airflow to flow through the airflow channel; wherein the airflow channel is designed to have a direction and an opening position, so that the flowing airflow can cool the lamp holder or the display while generating pneumatic pressure on the placing rack to enhance the mounting stability of the screen hanging lamp on the display.

[0036] By adopting the above scheme, the airflow channel is arranged inside the placing rack, the upper end of the airflow channel is communicated with the outside, the external airflow is guided into the airflow channel by the cooling fan, and the airflow impacts on the placing rack by air resistance, so that the airflow can press the placing rack on the display, and the airflow is blown to the lamp holder by the cooling fan, thereby improving the cooling capacity of the lamp bead assembly in the lamp holder.

[0037] In summary, the present application has at least one of the following beneficial technical effects: by adopting the optical mirror arranged at a certain angle with the horizontal plane, and arranging the lamp bead assemblies on the opposite sides of the optical mirror, and emitting light from the lamp bead assemblies in two parts, part of the light is projected at a certain angle in front of the display screen, this part of light is controlled to avoid the screen visible area of the display, thereby eliminating the screen glare, so that the reflected light does not enter the human eye and does not shoot on the screen of the display screen, at the same time, the reflected light can form a light curtain in front of the display screen, provide comfortable color temperature, improve the overall visual experience, thereby avoiding the reflection of light on the display screen while reducing the visual fatigue of the user, the other part of the light can be used as ambient light, thereby further reducing the visual fatigue of the user.

[0038] By arranging the V-shaped groove-shaped light splitting microstructure on the light entrance surface of the optical mirror, when the light enters the light splitting microstructure of the optical mirror, part of the light can be reflected twice in succession in the V-shaped groove, and finally emitted from the light entrance surface, so that the light can be irradiated in front of the display screen, and another part of the light is irradiated at the gap between the two V-shaped grooves, the light can be transmitted through the optical mirror and emitted from the other side, this part of light can be used as ambient light, thereby the device can form working light for illumination and ambient light for reducing visual fatigue by using a group of lamp bead assemblies.

[0039] By setting the airflow channel inside the placing rack, and setting the heat dissipation fan inside the airflow channel, the external airflow is guided by the heat dissipation fan, so that the airflow can enter from the top of the placing rack, pass through the heat conduction plate and take away the heat of the heat conduction plate, and finally blow out from the side of the airflow channel. When the airflow enters the placing rack, the airflow resistance can exert a continuous downward force on the placing rack, thereby improving the downward pressure when the placing rack is placed on the display screen. At the same time, when the airflow passes through the heat conduction plate, it can also accelerate the heat dissipation of the display screen. When the airflow blows to the lamp holder, it can also accelerate the heat dissipation of the lamp holder. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a perspective view of a curved screen hanging lamp with an asymmetric light source provided in the first embodiment of the present application;

[0041] Figure 2 is a perspective view of a curved screen hanging lamp with an asymmetric light source provided in the first embodiment of the present application;

[0042] Figure 3 is a plane cross-sectional view of a curved screen hanging lamp with an asymmetric light source provided in the first embodiment of the present application;

[0043] Figure 4 is a perspective cross-sectional view of a light-emitting cavity of a curved screen hanging lamp with an asymmetric light source provided in the first embodiment of the present application;

[0044] Figure 5 is a plane cross-sectional view of a lamp holder of a curved screen hanging lamp with an asymmetric light source provided in the first embodiment of the present application;

[0045] Figure 6 is a plane cross-sectional view of a lamp holder of a curved screen hanging lamp with an asymmetric light source provided in the second embodiment of the present application;

[0046] Figure 7 is a light path schematic diagram of an optical mirror of a curved screen hanging lamp with an asymmetric light source provided in the second embodiment of the present application when the electrically controlled dimming film is powered on;

[0047] Figure 8 is a light path schematic diagram of an optical mirror of a curved screen hanging lamp with an asymmetric light source provided in the second embodiment of the present application when the electrically controlled dimming film is not powered on;

[0048] Figure 9 is a plane cross-sectional view of a curved screen hanging lamp with an asymmetric light source provided in the third embodiment of the present application.

[0049] Explanation of reference numerals in the attached drawings: 1. Support assembly; 11. Fixing part; 111. Placement rack; 1111. Airflow channel; 1112. Cooling fan; 1113. Heat-conducting plate; 112. Rotating joint; 113. Limiting joint; 114. Protrusion; 115. Limiting gap; 2. Lamp holder; 21. Optical lens; 211. Reflective film layer; 212. Beam splitting microstructure; 2121. V-groove; 2122. Gap; 213. Electronically controlled dimming film; 22. Light source; 221. Lamp bead assembly; 23. Light-emitting chamber; 231. Arc segment; 232. Straight segment; 24. First reflective film; 25. Rotating component; 251. Servo motor; 252. Drive column; 26. First light-transmitting plate; 261. Diffuse reflection layer; 27. Second light-transmitting plate; 28. Second reflective film; 3. Display screen. Detailed Implementation

[0050] The following is in conjunction with the appendix Figures 1-9 This application provides a further detailed description of a curved screen hanging lamp with an asymmetric light source.

[0051] Example 1, please refer to Figure 1 , Figure 2 and Figure 4 The bracket assembly 1 provided in this embodiment has a swingable lamp holder 2 at one end and is mounted on a display at the other end. The lamp holder 2 contains an adjustable optical lens 21 and a light source 22. The optical lens 21 is used to divide the light emitted by the light source 22 into a first functional beam and a second functional beam. Wherein:

[0052] The first functional beam is guided and projected onto a preset working area in front of the display to provide working illumination;

[0053] The second functional beam is guided and projected to form background ambient light; the background ambient light is used to enhance the brightness of the environment around the preset working area, so as to work in conjunction with the first functional beam to reduce the brightness contrast between the working area and the surrounding environment. By setting an optical lens 21 inside the lamp holder 2, the optical lens 21 can limit the light emission angle of the light emitted by the light source 22, so that part of the light emitted by the light source 22 shines on the front of the display screen at a certain angle, and the other part of the light is projected on the top of the lamp holder 2, thereby reducing screen reflection and visual fatigue of the user.

[0054] Please see Figure 2The support assembly 1 comprises a fixing part 11, the fixing part 11 comprises a placing rack 111, a rotating joint 112 and a limiting joint 113, the rotating joint 112 is rotatably connected with one end of the placing rack 111 and the limiting joint 113 through damping rotating shafts at two ends, the lower surface of the placing rack 111 is provided with a protrusion 114, the protrusion 114 is configured to form a limiting gap 115 with the limiting joint 113 after the limiting joint 113 is deflected at an angle, so that the placing rack 111 is clamped on the display, the lamp holder 2 is rotatably assembled at the other end of the placing rack 111 through a damping rotating shaft, so that the lamp holder 2 can be deflected at an angle on the horizontal plane, by adjusting the relative angle of the rotating joint 112 and the limiting joint 113, the protrusion 114 can be matched with the display with different external shapes, and the purpose of stable placement is achieved.

[0055] In the embodiment, the rotating joint 112 and the limiting joint 113 are provided with anti-skid rubber layers on the sides close to the display;

[0056] The damping bearing can be vertically arranged on the other end of the placing rack 111, and one end of the lamp holder 2 is connected to the outside of the damping bearing, so that the other end of the lamp holder 2 can be deflected with the damping bearing at one end as the axis, and then the lamp holder 2 can be deflected on the horizontal plane.

[0057] Please refer to Figure 3 The lamp holder 2 is internally provided with a plurality of light emitting cavities 23 arranged at intervals along the length direction of the lamp holder 2, the inner walls of the two sides of the light emitting cavity 23 are respectively provided with an arc segment 231 with a partial circular track and a straight segment 232, the two arc segments 231 are symmetrically arranged along the diagonal lines of the light emitting cavity 23, the arc segment 231 is provided with a first reflecting film 24, the light source 22 comprises a lamp bead assembly 221, the lamp bead assembly 221 is arranged on the straight segment 232, when the light emitted by the light source 22, the first reflecting film 24 arranged on the arc segment 231 is used to make the light emitted by the light source 22 on the side surface be reflected on the arc segment 231 and the optical mirror 21 respectively, after twice reflection, the light can finally be emitted in front of the display screen, the utilization rate of the light is improved, at the same time, the stray light emitted by the light source 22 on the side surface does not affect the use of the whole lamp, and the rotation of the lamp is not affected.

[0058] Please refer to Figure 3 and Figure 5The lamp bead assembly 221 is arranged in two groups, and the two groups of lamp bead assemblies 221 are respectively arranged on the two flat sections 232 and close to the arc-shaped section 231. A rotating part 25 is arranged on one side of the inner wall of the light-emitting chamber 23. The rotating part 25 is arranged at the middle of one side of the optical mirror 21 and connected with the optical mirror 21. The optical mirror 21 is rotatably arranged in the light-emitting chamber 23 through the rotating part 25 and forms an angle with the horizontal plane. The rotating part 25 is located at the center of the circle where the arc-shaped section 231 is located. Two groups of lamp bead assemblies 221 are arranged on the two sides of the optical mirror 21 respectively, and the light emitted by the lamp bead assemblies 221 is guided by the two sides of the optical mirror 21 respectively. Two beams of light can be used as ambient light and working light for illumination, so as to alleviate the visual fatigue of the user and limit the illumination range of the working light.

[0059] Please refer to Figure 3 The rotating part 25 includes a servo motor 251 and a driving column 252. The servo motor 251 is arranged in the lamp holder 2. One end of the driving column 252 is coaxially arranged on the driving shaft of the servo motor 251, and the other end is connected and fixed with the optical mirror 21. The placement angle of the optical mirror 21 is controlled by the rotating part 25, and then the angle of the light reflected by the optical mirror 21 is controlled, so that the direction of the reflected light can be adjusted by a small angle.

[0060] Please refer to Figure 5 The optical mirror 21 is a sheet-shaped member. The two sides of the optical mirror 21 are provided with reflective film layers 211. The light-emitting chamber 23 is provided with a first light-transmitting plate 26 and a second light-transmitting plate 27 on the upper side and the lower side respectively. The side of the first light-transmitting plate 26 away from the light-emitting chamber 23 is provided with a diffuse reflection layer 261. The diffuse reflection layer 261 is located above the light-emitting chamber 23.

[0061] It can be understood that the curved screen hanging lamp of the asymmetric light source of the present application further comprises a control module configured to allow a user to independently adjust at least one optical parameter of the first functional light beam and the second functional light beam, the optical parameter including brightness and / or color temperature, and further comprising an ambient light sensor; the control module is electrically connected with the ambient light sensor and is configured to:

[0062] According to the ambient brightness detected by the ambient light sensor, the brightness of the second functional light beam is automatically adjusted to maintain a preset range of brightness contrast between the preset working area and the surrounding environment.

[0063] In order to further simplify the structure and reduce the energy consumption, the application further provides another single light source based implementation scheme, i.e., the single light source scheme shown in Embodiment 2, which is different from Embodiment 1 in that:

[0064] The optical mirror 21 comprises an integrally formed optical element having:

[0065] a first optical functional area having an asymmetric reflecting surface or refracting surface for converging and deflecting a part of the initial light to form the first functional light beam; and

[0066] a second optical functional area having a surface structure for scattering or large-angle deflection for guiding another part of the initial light to form the second functional light beam.

[0067] Wherein, the specific explanation of the asymmetry is that the geometric profile of the reflecting surface has different curvatures or shapes on the side close to the screen and the side away from the screen, so as to differentially control the path of the light rays directed to different directions, and finally realize the precise projection of the light beam to the target area while actively avoiding the precise light path distribution of the non-target area (such as the screen). When the light rays enter the optical mirror 21, different areas of the lens will deflect the light rays differently.

[0068] The lens part close to the screen will sharply deflect the light rays outward, also making them "pass over" the screen.

[0069] The lens part away from the screen will converge the light rays to the working area that needs to be illuminated.

[0070] That is, the light rays from the light source to the steep side (the side close to the screen) will be reflected at a very large angle, making them "pass over" the screen and directly shoot at the distant desktop.

[0071] The light rays from the light source to the gentle side (the side away from the screen) will be normally reflected, covering the keyboard area in front of the display.

[0072] Please refer to Figure 6 and Figure 7The optical mirror 21 is a light guide plate, the lamp bead assembly 221 is arranged as a group, one group of the lamp bead assembly 221 is arranged on the inner wall of one side of the light-emitting cavity 23, the other side of the light-emitting cavity 23 away from the lamp bead assembly 221 is provided with a second reflecting film 28, one side surface of the optical mirror 21 is provided with a light splitting microstructure 212, the light splitting microstructure 212 is used for reflecting part of the light emitted by the lamp bead assembly 221, so that part of the light is reflected to the lower side of the lamp holder 2, and the other part is projected on the upper side of the lamp holder 2, by arranging a group of lamp bead assemblies 221 as the light source 22, the lamp bead assembly 221 is more energy-saving and environmentally friendly, and by using the light splitting effect of the light splitting microstructure 212, the light emitted by the light source 22 is respectively emitted to the front of the display screen and the upper side of the lamp holder 2, so that the need for light-emitting angle is met, and the visual fatigue of the user is relieved.

[0073] Please refer to Figure 6 and Figure 7 The light splitting microstructure 212 includes a plurality of V-shaped grooves 2121 arranged at intervals along the width direction of the optical mirror 21, a gap 2122 extending along the width direction of the optical mirror 21 is formed between two adjacent V-shaped grooves 2121, one end of the optical mirror 21 close to the lamp bead assembly 221 is defined as a low beam end, and the other end is a high beam end, the width of the plurality of gaps 2122 decreases in the direction from the low beam end to the high beam end, by arranging a plurality of V-shaped grooves 2121 at intervals on the light-incident surface of the optical mirror 21, the light can be emitted from the light-incident surface of the optical mirror 21 after being reflected twice in the V-shaped grooves 2121, which has the effect of reflecting light, and the density of the V-shaped grooves 2121 can be changed, so that the device can reflect working light more uniformly.

[0074] Please refer to Figure 7 and Figure 8 The other side of the optical mirror 21 is provided with an electrically controlled light modulation film 213, when the electrically controlled light modulation film 213 is powered on, the electrically controlled light modulation film 213 is in a transparent state, when the electrically controlled light modulation film 213 is not powered on, the electrically controlled light modulation film 213 changes to an opaque state and has certain reflecting / scattering properties, which can reflect the light that is originally transmitted back into the optical mirror 21, or scatter it away, so that when the device does not need to use ambient light, light will not be transmitted from the other side of the optical mirror 21, thereby realizing the light-emitting effect of multiple modes of the device.

[0075] In this embodiment, the electrically controlled light modulation film 213 can be a polymer dispersed liquid crystal film.

[0076] Embodiment 3, the structure of embodiment 3 is basically the same as that of embodiment 1, the difference is that:

[0077] Please refer to Figure 9The placing rack 111 is internally provided with a heat dissipation fan 1112; the placing rack 111 is provided with an airflow channel 1111, and the heat dissipation fan 1112 is configured to guide external airflow to flow through the airflow channel 1111; wherein the trend and opening position of the airflow channel 1111 are designed so that the flowing airflow can dissipate heat for the lamp holder 2 or the display while generating pneumatic pressure on the placing rack 111 to enhance the mounting stability of the screen hanging lamp on the display; by guiding external airflow to enter the inside of the airflow channel 1111 by using the heat dissipation fan 1112, and then using the air resistance of the airflow impacting on the placing rack 111, the placing rack 111 can be pressed tightly on the display, and the heat dissipation capacity for the lamp bead assembly 221 inside the lamp holder 2 is improved.

[0078] In summary, when light needs to be emitted in the upward and downward directions of the lamp holder 2, the electrically controlled dimming film 213 is powered on, at this time, the light emitted by the lamp bead assembly 221 passes through the light splitting effect of the optical mirror 21, so that the light can be emitted from the upper and lower sides of the lamp holder 2 respectively; when the angle of light emission needs to be adjusted according to the actual situation, the driving member drives the optical mirror 21 to rotate, thereby adjusting the angle of reflection and refraction of the light on the optical mirror 21, and thereby adjusting the light emission angle on both sides of the optical mirror 21;

[0079] When only light needs to be emitted from the lower side of the lamp holder 2, the power supply to the electrically controlled dimming film 213 is stopped, and the side of the optical mirror 21 close to the upper side of the lamp holder 2 becomes opaque, at this time, when the light enters the optical mirror 21, it can only be reflected at the light entrance surface, thereby enabling the device to work in multiple modes to meet the needs of the user.

[0080] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the basis of the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A curved screen hanging light for asymmetric light sources, characterized in that, The utility model relates to a kind of display stand, including: Support assembly (1), one end of the support assembly (1) is equipped with swingable lamp holder (2), the other end is assembled on display; The lamp holder (2) is equipped with adjustable angle optical mirror (21) and light source (22) inside, the optical mirror (21) is used to divide the light emitted by light source (22) into first function light beam and second function light beam;Wherein: The first function light beam is guided to project to the preset work area in front of the display, to provide work illumination; The second function light beam is guided to project to form background ambient light;The background ambient light is used to improve the brightness of the environment around the preset work area, to reduce the brightness contrast between the work area and the surrounding environment in cooperation with the first function light beam; The lamp holder (2) is equipped with multiple light-emitting cavities (23) inside along the length direction of lamp holder (2), the inner wall of the two sides of the light-emitting cavity (23) is respectively provided with arc segment (231) with partial circular trajectory and straight segment (232), two arc segments (231) are symmetrically arranged along the diagonal of the light-emitting cavity (23), the arc segment (231) is equipped with first reflective film (24), and the light bead assembly (221) is arranged on the straight segment (232). The lamp bead assembly (221) is arranged as two groups, and the two groups of lamp bead assemblies (221) are respectively assembled on two straight segments (232) and close to the arc segment (231), one side inner wall of the light-emitting cavity (23) is equipped with rotating part (25), the rotating part (25) is located in the middle of one side of optical mirror (21) and is connected with optical mirror (21), the optical mirror (21) is rotatably assembled in the light-emitting cavity (23) through rotating part (25) and forms an angle with horizontal plane, and the rotating part (25) is located at the center of the circle where the arc segment (231) is located.

2. An asymmetric light source curved screen hanging lamp according to claim 1, characterized in that, The support assembly (1) includes: Fixed part (11), the fixed part (11) includes placing rack (111), rotating joint (112) and limiting joint (113), the rotating joint (112) is rotatably connected with one end of the placing rack (111) and the limiting joint (113) through damping rotating shaft at both ends, respectively, the lower surface of the placing rack (111) is equipped with protrusion (114), the protrusion (114) is configured to form limiting gap (115) between the limiting joint (113) after the deflection angle of the limiting joint (113), so that the placing rack (111) is clamped on the display; The lamp holder (2) is rotatably assembled in the other end of the placing rack (111) through damping rotating shaft, so that the lamp holder (2) can be angularly deflected on the horizontal plane.

3. An asymmetric light source curved screen hanging lamp according to claim 2, characterized in that: The optical mirror (21) is a sheet-shaped member, both sides of the optical mirror (21) are provided with a reflective film layer (211), the upper and lower sides of the light-emitting chamber (23) are respectively provided with a first light-transmitting plate (26) and a second light-transmitting plate (27), the side of the first light-transmitting plate (26) away from the light-emitting chamber (23) is provided with a diffuse reflection layer (261), and the diffuse reflection layer (261) is located above the light-emitting chamber (23).

4. An asymmetric light source curved screen hanging lamp according to claim 1, characterized in that: The optical mirror (21) comprises an integrally formed optical element, which has: a first optical functional area having an asymmetric reflective surface or refractive surface for converging and deflecting a part of the initial light to form the first functional light beam; and a second optical functional area having a surface structure for scattering or large-angle deflection for guiding another part of the initial light to form the second functional light beam. The lamp bead assembly (221) is arranged in a group, and a group of the lamp bead assembly (221) is arranged on an inner wall of one side of the light-emitting chamber (23), the optical mirror (21) is a light guide plate, the other inner wall of the light-emitting chamber (23) away from the lamp bead assembly (221) is provided with a second reflective film (28), and one side surface of the optical mirror (21) is provided with a light splitting microstructure (212), the light splitting microstructure (212) is used for reflecting a part of the light emitted by the lamp bead assembly (221), so that a part of the light is reflected to the lower side of the lamp holder (2), and another part is projected on the upper side of the lamp holder (2).

5. An asymmetric light source curved screen hanging lamp according to claim 4, characterized in that: The light splitting microstructure (212) comprises a plurality of V-shaped grooves (2121) arranged along the width direction of the optical mirror (21), and a gap (2122) extending along the width direction of the optical mirror (21) is formed between adjacent two V-shaped grooves (2121).

6. An asymmetric light source curved screen hanging lamp according to claim 5, characterized in that: An end of one side of the optical mirror (21) close to the lamp bead assembly (221) is defined as a low beam end, and the other end is a high beam end, and the widths of the plurality of gaps (2122) decrease in the direction from the low beam end to the high beam end. The other side of the optical mirror (21) is provided with an electrically controlled dimming film (213).

7. An asymmetric light source curved screen hanging lamp according to claim 6, characterized in that: When the electrically controlled dimming film (213) is powered on, the electrically controlled dimming film (213) is in a transparent state. When the electrically controlled dimming film (213) is not powered on, the electrically controlled dimming film (213) changes to an opaque state. The placing rack (111) is internally provided with a heat dissipation fan (1112), and an airflow channel (1111) is formed in the placing rack (111), and the heat dissipation fan (1112) is configured to guide external airflow to flow through the airflow channel (1111); wherein the trend and opening position of the airflow channel (1111) are designed so that the flowing airflow can dissipate heat for the lamp holder (2) or the display while generating pneumatic pressure on the placing rack (111) to enhance the mounting stability of the screen hanging lamp on the display.

8. An asymmetric light source curved screen hanging lamp according to claim 2, characterized in that: ​

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