Lamp with dimming film control function

Abstract

The lamp comprises a lamp body; the dimming film is arranged on the lamp body and is switched between a matte mode and a transparent mode in an electrical control mode, so that the lamp can provide different irradiation light types, and when the surface of an irradiation target object is a low-gloss surface, the dimming film is switched between the matte mode and the transparent mode. The dimming film can be in a transparent mode to allow more reflected light to reach human eyes when the surface of an irradiated target object is a high-glossiness surface, and can be in a matte mode to allow less reflected light to reach human eyes when the surface of the irradiated target object is a high-glossiness surface, so that the dimming film can cope with the illumination conditions of the surfaces of irradiated objects with different glossiness.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and in particular to a luminaire with a dimming film control function. Background Technology

[0002] During use, the installation position and the angle of illumination of a regular lamp will vary depending on the application scenario. Furthermore, if the lamp cannot be adjusted to adapt to the gloss level of the object being illuminated, it will result in insufficient reflected light when illuminating a low-gloss surface, or glare when illuminating a high-gloss surface.

[0003] To enable light to be focused and diffused to provide different illumination intensities and beam patterns, CN102338285B discloses a flashlight comprising a housing, a light source, a flashlight head, and a front optical device supported within the flashlight head, wherein the light source is fixed on a disc-shaped holder. To enable the flashlight beam to be focused, the front optical device is movably supported relative to the light source; that is, by allowing the light-focusing front optical device to move relative to the light source, the distance between the front optical device and the light source can be adjusted, allowing the light emitted by the flashlight to be focused or diffused.

[0004] CN100549505C discloses an LED lighting module comprising an LED and a rotationally symmetric, one-piece, light-transmitting auxiliary optical system. The auxiliary optical system has an inner condenser lens portion and an outer reflector portion. The auxiliary optical system has a blind-aperture shaped opening on its back side, within which the LED can move axially along an optical axis. This movement allows for a change in the light cone's angle, from ≤12° to ≥20°. In other words, the shape of the light cone can be adjusted by moving the light source to change the distance between the light source and the condenser lens portion.

[0005] Therefore, traditional lighting fixtures typically switch between converging and diffused light patterns by moving the light source and the condenser lens relative to each other. However, this method of adjusting the light pattern through mechanical structures is prone to wear and tear on the mechanical parts, which can easily damage the entire fixture and render it unusable. Furthermore, these mechanical structures generally only provide two different light patterns. That is, to provide a stable light pattern, the light source and the condenser lens need to be fixed at the focusing and diffused positions after relative movement. This results in a relatively limited range of light patterns provided by the fixture and prevents stepless adjustment. Summary of the Invention

[0006] One advantage of this invention is that it provides a luminaire with a dimming film control function, which realizes the switching between different light patterns through the electrical control of a dimming film, thereby making it easy to operate and eliminating the need for complex and vulnerable mechanical structures.

[0007] Another advantage of the present invention is that it provides a lamp with a dimming film control function, wherein when the surface of the irradiated object is a low-gloss surface, the dimming film can be in a transparent mode to allow more reflected light to reach the human eye, and when the surface of the irradiated object is a high-gloss surface, the dimming film can be in a frosted mode to allow less reflected light to reach the human eye, thereby enabling it to cope with the lighting conditions of irradiated object surfaces with different gloss levels.

[0008] Another advantage of the present invention is that it provides a lamp with a dimming film control function, wherein by controlling the current of the dimming film, the lighting effect can be continuously adjusted, thereby meeting the lighting needs of different application scenarios.

[0009] Another advantage of the present invention is that it provides a lamp with a dimming film control function, wherein the dimming film can be disposed on the lamp beads, lamp cover or condenser lens of the lamp, so as to facilitate the integration of the dimming film without changing the original structure of the lamp, thereby making it easier to manufacture.

[0010] Another advantage of the present invention is that it provides a lamp with a dimming film control function, wherein the control circuit of the dimming film is integrated into the lamp driver circuit of the lamp, thereby facilitating the coordinated control of the light emission of the lamp beads and the switching of the dimming film state.

[0011] Another advantage of the present invention is that it provides a lamp with a dimming film control function, wherein because there is no need to drive the components to generate displacement, the user can operate the dimming film control switch without much force, thereby facilitating the adjustment of the illumination pattern of the lamp.

[0012] According to one aspect of the present invention, a lamp is provided, comprising:

[0013] Lamp body; and

[0014] A dimming film is disposed on the lamp body and switches between a frosted mode and a transparent mode through electrical control, thereby enabling the lamp to provide different illumination patterns.

[0015] In some embodiments, the lamp body includes a light source, a housing, and a focusing lens, wherein the light source and the focusing lens are assembled in the housing, and the focusing lens focuses the light generated by the light source.

[0016] In some embodiments, the lamp body further includes a reflector assembled to the light source to reflect at least a portion of the light emitted by the light source toward the focusing lens.

[0017] In some embodiments, the light source includes a light-emitting element and a controller, the light-emitting element being electrically connected to the controller, and the mounting end of the reflector being assembled to the controller such that the light-emitting element of the light source is located in the reflective cavity of the reflector, the inner surface of the reflector forming the reflective cavity and forming a reflective surface for reflecting light from the light-emitting element.

[0018] In some embodiments, the dimming film is attached to the inner or outer side of the condenser lens.

[0019] In some embodiments, the housing of the lamp body includes a lampshade, and the dimming film is disposed on the lampshade.

[0020] In some embodiments, the dimming film is attached to the light-emitting element.

[0021] In some embodiments, the controller includes a circuit board and connecting lines, the dimming film being electrically connected to the circuit board via the connecting lines, and the connecting lines being located outside the reflector.

[0022] In some embodiments, the controller includes a control switch electrically connected to the circuit board and used to control the power-on and power-off states of the dimming film.

[0023] In some embodiments, the control switch is a button.

[0024] In some embodiments, the control switch is a knob that controls the transparency of the dimming film by adjusting the magnitude of the current flowing through it.

[0025] In some embodiments, a local area of ​​the dimming film can switch between the matte mode and the transparent mode.

[0026] In some embodiments, the dimming film includes two layers of indium tin oxide film and a liquid crystal layer located between the two layers of indium tin oxide film.

[0027] In some embodiments, the dimming film includes two indium tin oxide (ITO) films and a liquid crystal layer located in a local intermediate region of the two ITO films, so that the intermediate region of the dimming film can switch between the matte mode and the transparent mode, and the annular region surrounding the intermediate region of the dimming film is transparent.

[0028] In some embodiments, the housing includes a lamp housing and a power supply housing, the lamp housing being used to assemble the light source, the condenser lens, and the reflector, and the power supply housing being used to assemble the power supply module.

[0029] In some embodiments, the lamp housing includes a lampshade and a housing housing, the condensing lens is assembled to the lampshade, the lampshade has a stepped surface on its inner side, and the condensing lens has an outer periphery that abuts against the stepped surface on the inner side of the lampshade, thereby assembling the condensing lens to the lampshade.

[0030] In some embodiments, the periphery of the dimming film is sandwiched between the periphery of the condenser lens and the exit end of the reflector, thereby securing the dimming film between the condenser lens and the exit end of the reflector.

[0031] According to another aspect of the present invention, the present invention further addresses the shortcomings of the prior art. The purpose of the present invention is to provide a lamp with a dimming film control function. By adding dimming film control, the diffuser or lampshade can be switched instantly from frosted to transparent to cope with the lighting conditions of objects with different gloss levels. This provides a more flexible solution for the lamp in practical applications such as scene lighting, inspection lighting, maintenance lighting, and temporary lighting.

[0032] To achieve the above objectives, the present invention is implemented through the following technical solution: a lamp with a dimming film control function, comprising a lamp body, wherein a dimming film is provided on the lamp cover or lens of the lamp body, the connection end of the dimming film is connected to the lamp driver built into the lamp body, an LED is provided on the light-emitting end of the lamp body, an interface for connecting the lamp driver circuit is provided on the back of the lamp body, and a switch for controlling the dimming film function is provided on the outer shell of the lamp body.

[0033] Preferably, the dimming film can be disposed on a movable lamp body, a fixed lamp body, a lamp body with a built-in lamp driver, a lamp holder for temporary or fixed installation of the lamp body, a magnet, or a handle.

[0034] Preferably, the dimming film includes an ITO film and a liquid crystal layer. ITO films are disposed on both sides of the liquid crystal layer. The ITO film on one side is for incident light, and the ITO film on the other side is for transmitted light. The ITO film is connected to the lamp driver power supply in the lamp body.

[0035] The beneficial effects of this invention are as follows: The structural design of this invention is reasonable, enabling the lamp body with a diffuser plate or lampshade equipped with a dimming film to achieve the effect of instantaneous switching from a frosted to a transparent finish by adding dimming film control. This is to cope with the lighting conditions of surfaces illuminated by objects with different gloss levels, and provides a technical option for reducing light curtain reflection and reflected glare in accordance with architectural lighting design standards such as GB 50034-2013. It also provides a more flexible design solution for lamp bodies in practical applications such as scene lighting, inspection lighting, maintenance lighting, and temporary lighting. Attached Figure Description

[0036] Figure 1 is a schematic diagram of the working principle of the dimming film of the present invention.

[0037] Figure 2 This is a schematic diagram of a handheld work light (with a lens having a dimming film) as a first specific example of the first preferred embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of a bracket-type work lamp (with a lens having a dimming film) as a second specific example of the first preferred embodiment of the present invention.

[0039] Figure 4 This is a schematic diagram of a pocket-sized handheld lamp (with a lens having a dimming film) as a third specific example of the first preferred embodiment of the present invention.

[0040] Figure 5 This is a schematic diagram of a long bracket work light (with a lens having a dimming film) according to a fourth specific example of the first preferred embodiment of the present invention.

[0041] Figure 6 This is a schematic diagram of a flashlight (with a lens having a dimming film) according to the fifth specific example of the first preferred embodiment of the present invention.

[0042] Figure 7 This is a perspective view of a flashlight according to a second preferred embodiment of the present invention.

[0043] Figure 8 This is a cross-sectional view of a flashlight according to the second preferred embodiment of the present invention.

[0044] Figure 9 This is an exploded view of a flashlight according to the second preferred embodiment of the present invention.

[0045] Figure 10 This is a first exploded view of the flashlight according to the second preferred embodiment of the present invention.

[0046] Figure 11 This is an enlarged schematic diagram of the dimming film of a flashlight according to the second preferred embodiment of the present invention.

[0047] Figure 12 This is a cross-sectional view of a flashlight according to a first modified embodiment of the second preferred embodiment of the present invention.

[0048] Figure 13 This is an exploded view of a flashlight according to a second modified embodiment of the second preferred embodiment of the present invention.

[0049] Figure 14 This is a cross-sectional view of a flashlight according to a third modified embodiment of the second preferred embodiment of the present invention.

[0050] Figure 15 This is a cross-sectional view of a flashlight according to the fourth modified embodiment of the second preferred embodiment of the present invention.

[0051] Figure 16 This is an exploded view of a flashlight according to the fifth modified embodiment of the second preferred embodiment of the present invention. Detailed Implementation

[0052] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0053] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0054] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0055] Referring to Figures 1-6, according to the first embodiment of the present invention, the specific implementation adopts the following technical solution: a lamp with a dimming film control function, including a lamp body 1, a dimming film 2 is provided on the lamp cover or lens of the lamp body 1, the connection end of the dimming film 2 is connected to the lamp driver built into the lamp body, an LED is provided on the light-emitting end of the lamp body 1, an interface for connecting the lamp driver circuit is provided on the back of the lamp body 1, and a switch for controlling the dimming film function is provided on the outer shell of the lamp body 1.

[0056] It is worth noting that the dimming film 2 can be installed on movable lamp bodies, fixed lamp bodies, lamp bodies with built-in lamp drivers, lamp holders for temporary or fixed installation of lamp bodies, magnets, or handles.

[0057] In addition, the dimming film 2 includes an ITO film 21 and a liquid crystal layer 22. ITO films 21 are provided on both sides of the liquid crystal layer 22. The ITO film 21 on one side is incident light 23, and the ITO film 21 on the other side is transmitted light 24. The ITO film 21 is connected to the lamp driver power supply 25 in the lamp body 1.

[0058] The lamp body 1 has a lens between the corresponding lamp bead and the dimming film 2, and the dimming film 2 is attached to the lens.

[0059] This specific embodiment achieves electrical signal control of the beam angle from focused beam to floodlight by energizing or de-energizing the dimming film to control the opacity or transparency of the light during lamp operation.

[0060] This specific embodiment of a luminaire diffuser or lampshade with dimming film control provides a flexible and controllable solution for illuminating surfaces with varying gloss levels. Applicable luminaires include movable and fixed luminaires, luminaires with built-in lamp drivers, and lamp holders, magnets, or handles for temporary or fixed installation. The lampshade has a dimming film on its surface, and the connection end of the dimming film is connected to the built-in lamp driver. The luminaire housing has a switch for controlling the dimming film function. By adding dimming film control, luminaires with diffusers or lampshades equipped with dimming films can achieve an instantaneous switching effect from frosted to transparent, addressing illumination needs of surfaces with different gloss levels. This provides a technical option for reducing light curtain reflection and reflected glare in accordance with the architectural lighting design standard GB 50034-2013, offering a more flexible solution for luminaires in practical applications such as scene lighting, inspection lighting, maintenance lighting, and temporary lighting.

[0061] In a specific application, if the luminaire is fixedly installed, in accordance with the requirements of the architectural lighting design standard GB50034-2013, when designing for a selected scene using DIALUX or similar optical design software, after selecting the required scene parameters, the design results can be compared between the frosted mode IES file and the transparent mode IES file of the luminaire. Based on the requirements for glare limitation in architectural lighting design standards such as GB 50034-2013, and the principle of "selecting luminaires with high efficiency or high performance while meeting glare limitation and light distribution requirements", the scheme mode to be set during the final fixed installation construction should be either frosted or transparent.

[0062] In another specific application, the lamp body is a movable lamp body. During the lamp body design period, it is necessary to reasonably design based on the required illumination distance, light output intensity, and light distribution curve of the lamp body usage scenario. Taking into account the differences in gloss of different irradiated object surfaces, and following the requirements of architectural lighting design standards such as GB 50034-2013 regarding glare limits, according to the algorithm of unified glare value (UGR) and glare GR, or when designing the scenario using DIALUX or similar optical design software, multiple frosted mode IES files and transparent mode IES files of the lamp body can be provided to give usage guidance on the selection of dimming film modes of the movable lamp body on different irradiated object surfaces.

[0063] like Figures 7 to 11 The image shows a lamp with a dimming film control function according to a second preferred embodiment of the present invention. It is implemented as a flashlight and includes a lamp body 10 and a dimming film 20 disposed on the lamp body 10. The dimming film 20 switches between a frosted mode and a transparent mode by electrical control, so that the lamp can provide different illumination patterns.

[0064] More specifically, the lamp body 10 includes a light source 11, a housing 12, and a condenser lens 13. The light source 11 and the condenser lens 13 are assembled in the housing 12. The light emitted by the light source 11 is focused by the condenser lens 13 and then projected out to provide illumination. In this embodiment, the lamp body 10 also includes a reflector 14, which is bowl-shaped and may have a conical cross-section. The reflector 14 has a reflective cavity 141, a mounting end 142, and an exit end 143. The mounting end 142 of the reflector 14 is assembled with the light source 11, and the condenser lens 13 is assembled with the exit end 143 of the reflector 14. Thus, part of the light generated by the light source 11 is projected onto the condenser lens 13 and focused, while another part of the light reaches the reflector 14, is reflected, and then projected onto the condenser lens 13 and focused out of the lamp.

[0065] The light source 11 includes one or more light-emitting elements 111 and a controller 112, with the light-emitting elements 111 electrically connected to the controller 112. The mounting end 142 of the reflector 14 is assembled to the controller 112, such that the light-emitting elements 111 of the light source 11 are located in the reflective cavity 141. The inner surface 144 of the reflector 14 forms the reflective cavity 141 and a reflective surface for reflecting light from the light-emitting elements 111. The condensing lens 13 can be a lens capable of converging the light emitted by the light-emitting elements 111, such as a convex lens. In a specific example, the condensing lens 13 can be a Fresnel lens. The light-emitting element 111 can be implemented as various light-emitting devices such as fluorescent lamps, LED chips, OLED chips, etc.

[0066] The housing 12 includes a lamp housing 121 and a power supply housing 122. The lamp housing 121 is used to assemble the light source 11, the condenser lens 13, and the reflector 14. The power supply housing 122 is used to assemble the power module. Accordingly, the power supply housing 122 has a power cavity 1221 for accommodating the power module, which can be a rechargeable battery or an AC / DC converter module to convert AC power into DC power usable by the lamp.

[0067] The housing 12 can be a single, integral housing, or it can be as follows: Figure 9 and Figure 10 As shown, the lamp housing 121 and the power supply housing 122 are two separate housing parts, and they can be detachably assembled together. For example, the lamp housing 121 and the power supply housing 122 can be assembled by mutually compatible internal threads 1210 and external threads 1220.

[0068] In other words, the lamp of the present invention may include two units: a light-emitting unit and a power supply unit. The light-emitting unit includes the lamp housing 121 and the light source 11, the condenser lens 13, and the reflector 14 assembled in the lamp housing 121. The power supply unit includes the power supply housing 122 and a rechargeable battery assembled in the power supply cavity 1221 of the power supply housing 122. The two units can be assembled independently and then assembled together. This allows one light-emitting unit to be paired with different power supply units, and one power supply unit to be adapted to different light-emitting units, thus making the assembly of the lamp relatively convenient.

[0069] In this embodiment of the invention, the lamp further includes a dimming film 20 disposed on the condenser lens 13. As shown in the figure, the condenser lens 13 is a lens having an inner side 131 and an outer side 132. The inner side 131 refers to the side adjacent to and facing the light-emitting element 111, and the outer side 132 refers to the side opposite to the near-light side 131 and away from the light-emitting element 111. The dimming film 20 is disposed on the inner side 131 of the condenser lens 13 and faces the light-emitting element 111.

[0070] Accordingly, in this embodiment of the invention, the condensing lens 13 and the dimming film 20 form a dimming mechanism 200, which cooperate to converge and diffuse the light emitted by the light-emitting element 111. More specifically, the condensing lens 13 converges the light, and the dimming film 20 is an electrically controllable component that can switch between a transparent mode and a matte mode when switched between a powered-on state and a powered-off state. When the dimming film 20 is in the transparent mode, the light emitted by the light-emitting element 111 passes through the transparent dimming film 20 and is converged by the condensing lens 13, thus enabling the lamp to be in a focused mode to provide a focused illumination spot. When the dimming film 20 is in the matte mode, the light emitted by the light-emitting element 111 passes through the matte dimming film 20 and is scattered, then converged by the condensing lens 13, thus enabling the lamp to be in a scattered mode to provide scattered illumination light.

[0071] Accordingly, the lamp of the present invention can provide different lighting effects according to the needs of the application scenario. For example, when the surface of the irradiated object is a low-gloss surface, the dimming film 20 can be energized and put into a transparent mode so that the light emitted by the light-emitting element 111 is focused by the condenser lens 13, thereby allowing more reflected light to reach the human eye. When the surface of the irradiated object is a high-gloss surface, the dimming film 20 can be de-energized and put into a frosted mode, so that the light emitted by the light-emitting element 111, after being scattered by the dimming film 20 and refracted by the condenser lens 13, can only allow less reflected light to reach the human eye, thus enabling the lamp to cope with the lighting conditions of surfaces with different gloss levels.

[0072] The dimming film 20, or dimming glass, comprises two transparent ITO (Indium Tin Oxide) films 21 and a liquid crystal layer 22 located between these two ITO films. When a voltage is applied to the two ITO films 21, i.e., when the dimming film 20 is energized, the polymer liquid crystal material of the liquid crystal layer 22 is arranged in an orderly manner, making the liquid crystal layer 22 transparent. This allows the light emitted by the light-emitting element 111 to pass through the dimming film 20 without changing its projection direction. When the two ITO films 21 are de-energized, the polymer liquid crystal material of the liquid crystal layer 22 is disordered, making the liquid crystal layer 22 no longer transparent. Thus, the light emitted by the light-emitting element 111 is scattered after entering the dimming film 20. It is understood that other protective films may be applied to the outside of the two transparent ITO films 311, and the dimming film 31 may be further bonded to a layer of transparent glass or plastic to enhance its strength.

[0073] The lamp housing 121 further includes a lampshade 1211 and a receiving housing 1212, which are detachably connected, such as by internal threads 12110 and external threads 12120. In this embodiment, the condensing lens 13 is assembled to the barrel-shaped lampshade 1211. More specifically, the lampshade 1211 has a stepped surface 12111 on its inner side, and the condensing lens 13 has an outer periphery 130 that abuts against the stepped surface 12111 on the inner side of the lampshade 1211, thereby assembling the condensing lens 13 to the lampshade 1211. It is understood that an adhesive layer may be applied between the condensing lens 13 and the stepped surface 12111 on the inner side of the lampshade 1211 to bond the condensing lens 13 to the stepped surface 12111 of the lampshade 1211.

[0074] The periphery 26 of the dimming film 20 is sandwiched between the periphery of the condenser lens 13 and the exit end 143 of the reflector 14, thereby securing the dimming film 20 firmly between the condenser lens 13 and the exit end 143 of the reflector 14. It is understood that an adhesive layer may also be applied between the periphery 26 of the dimming film 20 and the condenser lens 13 and the exit end 143 of the reflector to bond and fix the dimming film 20 to the condenser lens 13 and the reflector 14.

[0075] The controller 112 includes a circuit board 1121, a connection line 1122, a switch line 1123, and a control switch 1124. The light-emitting element 111 is electrically connected to and supported on the circuit board 1121. The dimming film 20 is electrically connected to the circuit board 1121 via the connection line 1122, and the control switch 1124 is electrically connected to the circuit board 1121 via the switch line 1123. The circuit board 1121 is powered by a rechargeable battery stored in the power cavity 1221 of the power housing 122. The controller 112 further includes a power switch 1125 electrically connected to the rechargeable battery for controlling the operating state of the rechargeable battery, thereby controlling the on and off of the light-emitting element 111. In the example shown in the figure, the power switch 1125 is located at the end of the power housing 122 and is implemented as a button.

[0076] In addition, the connecting line 1122 extends from the outside of the reflector 14 to the position connected to the circuit board 1121, so as not to pass through the reflective cavity 141 of the reflector 14, and thus not to block the light emitted by the light-emitting element 111.

[0077] It is understood that, in this embodiment, the control switch 1124 of the dimming film 20 can be implemented as a button, thereby switching the dimming film 20 between two states of being powered on and powered off, so as to cooperate with the condenser lens 13 to provide different illumination patterns of converging and scattering light.

[0078] More specifically, when the user presses the power switch 1125 to activate the light-emitting element 111, emitting light, for low-gloss target surfaces, the user can operate the control switch 1124 to energize the dimming film 20. In this state, the dimming film 20 is in transparent mode, and the light emitted by the light-emitting element 111 is focused by the condenser lens 13 to provide a focused illumination effect. For high-gloss target surfaces, the user can operate the control switch 1124 to de-energize the dimming film 20. In this state, the dimming film 20 is in matte mode, and the light emitted by the light-emitting element 111 is scattered by the non-uniform medium of the dimming film 20 before entering the condenser lens 13, thereby reducing the amount of light reaching the user's eyes.

[0079] like Figure 12As shown in the first modified embodiment of the second preferred embodiment of the present invention, the dimming film 20 can be disposed on the outer side 132 of the condenser lens 13. The light emitted by the light-emitting element 111 is first refracted and focused by the condenser lens 13 before entering the dimming film 20. That is to say, in this embodiment, the light entering the dimming film 20 is all light that has been focused by the condenser lens 13. By controlling the power-on and power-off states of the dimming film 20, the light pattern of the light emitted from the lamp can be controlled.

[0080] like Figure 13 As shown in the second modified embodiment of the second preferred embodiment of the present invention, the control switch 1124 of the dimming film 20 is implemented as a knob. When the knob is rotated, the voltage applied to the ITO film can gradually increase from zero to a maximum, and correspondingly, the current through the dimming film 20 can gradually increase from zero to a maximum. When the current through the dimming film 20 is zero, that is, the dimming film 20 is in a de-energized state, the dimming film 20 is in a matte mode, and its transparency is minimal. When the current flowing through the dimming film 20 increases to its maximum value, that is, the dimming film 20 is in a energized state and the dimming film 20 is in a transparent mode. Furthermore, as the current flowing through the dimming film 20 gradually increases from zero, the transparency of the dimming film 20 gradually increases, so that the transparency of the dimming film 20 can be steplessly adjusted. That is to say, in this embodiment, the dimming effect of the dimming film 20 can be continuously adjusted by rotating the control switch 1124, thereby meeting the lighting requirements in different application scenarios.

[0081] Traditional mechanical structures require fixing at the focusing and diffusing positions, so they can generally only provide two different light patterns. However, the dimming film 20 of the present invention is electrically controlled, thereby allowing the lamp to provide a variety of different light patterns.

[0082] like Figure 14 As shown, in a third variation of the second preferred embodiment of the present invention, the dimming film 20 is disposed on the lampshade 1211, thereby serving as a lampshade for the luminaire. The condenser lens 13 can be assembled to the outlet end 143 of the reflector 14.

[0083] like Figure 15 As shown in the fourth modified embodiment of the second preferred embodiment of the present invention, the dimming film 20 is disposed on the light-emitting element 111 and can be attached to the surface of the light-emitting element 111.

[0084] like Figure 16As shown, in a fifth variation of the second preferred embodiment of the present invention, the dimming film 20 includes two ITO films 21 and a liquid crystal layer 22 sandwiched between the ITO films 21, wherein the liquid crystal layer 22 is located only in the middle region of the dimming film 20, and the annular region 27 surrounding the liquid crystal layer 22 is transparent without the liquid crystal layer 22.

[0085] In other words, in this embodiment of the invention, a local area of ​​the dimming film 20 has a dimming effect. More specifically, for example, the circular area in the middle of the dimming film 20 can switch between a transparent mode and a matte mode, so that when the dimming film 20 is powered on, the light emitted by the light-emitting element 111 can penetrate the dimming film 20 and the condenser lens 13, thereby providing converged light. When the dimming film 20 is powered off, a portion of the light emitted from the light-emitting element 111 passes directly through the condenser lens 13 to form a brighter annular light spot, and at least a portion of the light reaches the area with the liquid crystal layer 22 in the middle of the dimming film 20 and is scattered, so that the lamp provides less light at the position corresponding to the middle area of ​​the dimming film 20.

[0086] It should be noted that in the apparatus and method of this application, the components or steps in different embodiments can be disassembled and / or recombined without departing from the principle of the present invention. These disassemblies and / or recombinations should be considered as included within the inventive concept of this application.

[0087] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations or modifications may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A luminaire with dimming film control function, characterized in that, The lamp includes a lamp body, on which a dimming film is provided on the lamp cover or lens. The connection end of the dimming film is connected to the lamp driver built into the lamp body. The light-emitting end of the lamp body is provided with an LED. An interface for connecting the lamp driver circuit is provided on the back of the lamp body. The outer shell of the lamp body is provided with a switch for controlling the function of the dimming film.

2. The lamp with dimming film control function according to claim 1, wherein the dimming film is disposed on a movable lamp body and a fixed lamp body, a lamp body with a built-in lamp driver, a lamp holder for temporary or fixed installation of the lamp body, a magnet or a handle.

3. The lamp with dimming film control function according to claim 1, wherein the dimming film includes an ITO film and a liquid crystal layer, an ITO film is provided on both sides of the liquid crystal layer, the ITO film on one side is incident light and the ITO film on the other side is transmitted light, and the ITO film is connected to the lamp driver power supply in the lamp body.

4. A lamp, characterized in that, include: Lamp body; as well as A dimming film is disposed on the lamp body and switches between a frosted mode and a transparent mode through electrical control, thereby enabling the lamp to provide different illumination patterns.

5. The lamp fixture according to claim 4, wherein the lamp body includes a light source, a housing, and a condenser lens, wherein the light source and the condenser lens are assembled in the housing, and the condenser lens focuses the light generated by the light source.

6. The luminaire according to claim 5, wherein the luminaire body further includes a reflector assembled to the light source for reflecting at least a portion of the light generated by the light source toward the condenser lens.

7. The luminaire according to claim 6, wherein the light source includes a light-emitting element and a controller, the light-emitting element is electrically connected to the controller, and the mounting end of the reflector is assembled to the controller such that the light-emitting element of the light source is located in the reflective cavity of the reflector, the inner surface of the reflector forms the reflective cavity and forms a reflective surface for reflecting light from the light-emitting element.

8. The luminaire according to claim 7, wherein the dimming film is attached to the inner or outer side of the condenser lens.

9. The lamp fixture according to claim 5, wherein the housing of the lamp body includes a lampshade, and the dimming film is disposed on the lampshade.

10. The luminaire according to claim 5, wherein the dimming film is attached to the light-emitting element.

11. The luminaire according to claim 7, wherein the controller includes a circuit board and connecting lines, the dimming film is electrically connected to the circuit board via the connecting lines, and the connecting lines are located outside the reflector.

12. The luminaire according to claim 11, wherein the controller includes a control switch electrically connected to the circuit board and used to control the energizing and de-energizing states of the dimming film.

13. The luminaire according to claim 12, wherein the control switch is a button.

14. The luminaire according to claim 12, wherein the control switch is a knob that controls the transparency of the dimming film by adjusting the magnitude of the current flowing through the dimming film.

15. The luminaire according to claim 5, wherein a local area of ​​the dimming film is switchable between the frosted mode and the transparent mode.

16. The luminaire according to any one of claims 4 to 15, wherein the dimming film comprises two layers of indium tin oxide film and a liquid crystal layer located between the two layers of indium tin oxide film.

17. The luminaire according to claim 15, wherein the dimming film comprises two layers of indium tin oxide film and a liquid crystal layer located in a local intermediate region of the two layers of indium tin oxide film, so that the intermediate region of the dimming film can switch between the matte mode and the transparent mode, and the annular region surrounding the intermediate region of the dimming film is transparent.

18. The luminaire according to any one of claims 6 to 8 and 10 to 15, wherein the housing comprises a lamp housing and a power supply housing, the lamp housing being used to assemble the light source, the condenser lens, and the reflector, and the power supply housing being used to assemble a power supply module.

19. The lamp fixture of claim 18, wherein the lamp housing comprises a lampshade and a receiving housing, the condensing lens is assembled to the lampshade, the lampshade has a stepped surface on its inner side, and the condensing lens has an outer periphery that abuts against the stepped surface on the inner side of the lampshade, thereby assembling the condensing lens to the lampshade.

20. The luminaire according to claim 19, wherein the periphery of the dimming film is sandwiched between the periphery of the condenser lens and the outlet end of the reflector, thereby securing the dimming film between the condenser lens and the outlet end of the reflector.

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