An improved dynamic display projection lamp

Abstract

The improved dynamic display projection lamp of the present invention includes a multi-channel projection unit, and the fixing component for fixing the multi-channel projection unit includes a lens holder and a film holder for fixing the film. A plurality of through holes are formed on the lens holder, and a slot for fixing a plurality of lenses of the corresponding lens group is formed on the inner wall of each through hole. The film holder is fixed in the lens holder or at least a part of the film holder is inserted between the lenses from the lens holder, so that the film is located between two lenses of the plurality of lenses. The improved dynamic display projection lamp of the present invention utilizes a lens holder and a film holder with a simple structure to fix a single row or two rows of multi-channel projection units arranged up and down, and then utilizes a controller to sequentially utilize the multi-channel projection units to sequentially project patterns, thereby forming a dynamic pattern projection effect. In addition, it also has the advantage of easy film replacement.

Description

Technical Field

[0001] The invention relates to a projection lamp, and in particular to an improved dynamic display projection lamp. Background Art

[0002] There are several types of projection pattern lights on the market. One is static projection, where the projected image is static and motionless, and is only used for display. The other is dynamic projection. In dynamic projection technology, one is to use a motor to drive the pattern to rotate to achieve dynamic projection, similar to the form of a marquee, where the pattern moves as a whole along a certain trajectory. Another type of dynamic projection is similar to an old-fashioned movie player, which drives the film to move quickly for projection, and uses the human eye's visual persistence to produce animation effects. However, this type of movie player has a complex structure and is expensive, so it is not suitable for ordinary consumer electronic products. Summary of the invention

[0003] The object of the present invention is to provide an improved dynamic display projection lamp which can realize a simple dynamic pattern projection display effect without a motor and a rotating mechanism.

[0004] An improved dynamic display projection lamp includes a multi-channel projection unit, a fixing component for fixing the multi-channel projection unit, and a controller for controlling at least a part of the light sources in the multi-channel projection unit to light up and extinguish in sequence. Each projection unit includes a light source, a lens group composed of a plurality of lenses arranged in front of the light source, and a film inserted between the plurality of lenses in the lens group. The fixing component includes: a lens bracket for fixing the plurality of lens groups of the multi-channel projection unit, a film bracket for fixing the film, and a circuit board for fixing the plurality of light sources of the multi-channel projection unit. A plurality of through holes are formed on the lens bracket, and a clamping groove for clamping the plurality of lenses of the corresponding lens group is formed on the inner wall of each through hole. The circuit board is fixed on one side of the light inlet of the through hole of the lens bracket, so that the plurality of light sources are opposite to the plurality of through holes. The film bracket is fixed in the lens bracket or at least a part of the film bracket is inserted between the lenses from the lens bracket, so that the film is located between two lenses of the plurality of lenses.

[0005] As an implementation manner, at least one of the lens groups includes a first lens, a second lens, and a third lens arranged in sequence from the light entrance to the light exit of the through hole.

[0006] Preferably, the film is located between the first lens and the second lens.

[0007] As an embodiment, the first lens, the second lens and the third lens are all convex lenses, and the positions of the three lenses and the light source are arranged so that the first lens focuses the light emitted by the light source, the second lens amplifies the light passing through the film, and the third lens focuses the light passing through the second lens.

[0008] As an embodiment, the film holder includes a first cover and a second cover that can be interlocked, the first cover is provided with a column extending toward the second cover, the second cover is formed with a corresponding hole, and the column of the first cover is inserted and fastened into the hole on the second cover.

[0009] As an implementation manner, a hole corresponding to the column of the first cover is formed on the film sheet, and the column of the first cover passes through the hole on the film sheet and is fastened in the hole on the second cover.

[0010] As an embodiment, the lens holder includes a middle frame, an upper cover and a lower cover connected to the middle frame. One end of the middle frame is defined as a light input end, and the other opposite end is defined as a light output end. The upper cover and the lower cover connect the light input end and the light output end and are arranged opposite to each other with the middle frame in between. The middle frame is formed with two or more grooves arranged side by side that penetrate the light input end and the light output end on the side facing the upper cover, and is also formed with two or more grooves arranged side by side that penetrate the light input end and the light output end on the side facing the lower cover. Two or more grooves are correspondingly formed on the upper cover and the lower cover, and the grooves on the middle frame correspond one-to-one with the grooves of the upper cover and the grooves of the lower cover to form the through holes.

[0011] Preferably, a slot is formed on the middle frame for the film holder to pass through, and grooves are also formed on the inner sides of the upper cover and the lower cover for inserting the side walls of the film holder; the improved dynamic display projection lamp has a central optical axis, and the through hole is inclined toward the central optical axis from the light input end to the light output end.

[0012] As another embodiment, the lens holder includes an upper cover and a lower cover that are interlocked. One end of the lens holder is defined as a light input end, and the other end opposite thereto is defined as a light output end. The inner sides of the upper cover and the lower cover are both formed with a plurality of grooves arranged side by side that penetrate the light input end and the light output end, and the grooves on the upper cover correspond to the grooves on the lower cover one by one to form the through hole.

[0013] Preferably, a slot for inserting a portion of the film holder is formed on the upper cover, and a groove for inserting a side wall of the film holder is also formed on the inner side of the lower cover.

[0014] The improved dynamic display projection lamp of the present invention uses a lens bracket and a film bracket with simple structure to fix a single row or two rows of multi-channel projection units arranged up and down, and then uses a controller to sequentially use the multi-channel projection units to project patterns in sequence to form a dynamic pattern projection effect. In addition, it also has the advantage of easy film replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded view of the improved dynamic display projection lamp according to the first embodiment of the present invention.

[0016] Figure 2 for Figure 1 Improved dynamic display of partial exploded view of the projection lamp fixture assembly.

[0017] Figure 3 for Figure 2 A three-dimensional schematic diagram of the lower shell of the fixed component.

[0018] Figure 4 This is an exploded view of the improved dynamic display projection lamp according to the second embodiment of the present invention.

[0019] Figure 5 for Figure 4 Improved dynamic display of partial exploded view of the projection lamp fixture assembly. DETAILED DESCRIPTION

[0020] The improved dynamic display projection lamp of the present invention will be further described in detail below in conjunction with specific embodiments and drawings.

[0021] like Figures 1 to 3 As shown, in the first embodiment of the present invention, the housing 10 of the improved dynamic display projection lamp has a light outlet 11, and a ring-shaped front cover 12 is fixed at the light outlet 11, and a transparent optical sheet 13 is clamped between the ring-shaped front cover 12 and the light outlet 11. A rear port 14 is formed at the other end of the housing 10 opposite to the light outlet 11, and a rear cover 15 is fixed at the rear port 14. A hole 151 for inserting a power supply socket 16 or a power cord and a button hole 152 are formed on the rear cover 15. A circuit board 20 is fixed inside the rear cover 15, and a controller is arranged on the circuit board 20. The controller has a button 21, and a silicone button cap 22 of the button 21 extends out of the projection lamp from the button hole 152. The user can use the button cap 22 to turn on, turn off, switch functions, etc. on the projection lamp. A through hole 17 is also formed on the side wall of the housing 10 for inserting a heat-conducting column 21 of a radiator 20. The end of the radiator 20 is rotatably connected to a base connecting rod 22, and the bottom of the base connecting rod 22 is connected to the base 23. Thus, by the base 23 and the base connecting rod 22, the improved dynamic display projection lamp can be fixed in an adjustable angle.

[0022] In addition, a fixing component is fixed in the housing, and the fixing component fixes the multi-channel projection unit. Each projection unit includes at least one light source 31, a lens group 32 composed of multiple lenses arranged in front of the at least one light source 31, and a film 33 inserted between the multiple lenses of the lens group 32.

[0023] The light source 31 can be an LED lamp bead or other types of point light sources or bulbs. In this embodiment, each projection unit is provided with an LED lamp bead. All LED lamp beads are fixed on a circuit board 34. The circuit board 34 is attached to one of the pieces of an L-shaped heat conductive sheet 35. The other piece of the L-shaped heat conductive sheet 35 is in contact with the heat conductive column 21 of the heat sink 20 through a heat conductive pad or directly. Therefore, the heat generated by the light source can be conducted to the heat sink 20 through the L-shaped heat conductive sheet 35, and finally dissipated by the heat sink portion arranged outside the housing 10, so as to ensure the normal operation of the light source.

[0024] In this embodiment, the lens group 32 of each projection unit includes three lenses: a first lens 321, a second lens 322 and a third lens 323, which are arranged in sequence from the inside of the fixing component to the light outlet 11 of the housing 10, and all of them are convex lenses. In other embodiments, the lens group can be provided with two or more lenses according to specific needs, and the number and type of lenses included in each lens group can be different.

[0025] In this embodiment, two films 33 are used, so that each two projection units share one film 33. The film 33 is located between the first lens 321 and the second lens 322. In other embodiments, each projection unit can be configured with a film, or multiple projection units can share different areas of a film. The film 33 can be a projection film made by exposure, or it can include a substrate made of PET (polyethylene terephthalate) and a multi-layer color printing layer printed on the substrate using screen printing technology. The colors on each color printing layer are different, and the printed patterns are different. After the multiple layers are stacked, a color pattern is formed, such as a color castle or a bunch of flowers. And the ink of the printing layer is anti-ultraviolet ink. In this way, the film 22 can withstand a high temperature of 80 degrees, and will not fade or deform under the irradiation of LED lights for a long time. In addition, the thickness of the base layer is 0.8~1.5mm, and the thickness of all printing layers is 0.05~0.1mm. A corresponding image is formed on the film at the position corresponding to each projection unit, so that the light from the light source projects the pattern on the film after passing through the lens group and the film.

[0026] In this embodiment, the first lens 321, the second lens 322 and the third lens 323 are all convex lenses, and the first lens 321 is a hemispherical lens, the second lens 322 is a convex lens protruding toward the first lens 321, and the third lens 323 is a convex lens protruding toward the light outlet 11. The positions of the three lenses and the light source 21 are set so that the first lens 321 focuses the light emitted by the light source 21, the second lens 322 amplifies the light passing through the film 33, and the third lens 323 focuses the light passing through the second lens 322, and projects the light to a preset position outside the projection lamp while ensuring a clear image.

[0027] As described above, in addition to the circuit board 34 and the L-shaped heat conductive sheet 35 for fixing the light source 31, the fixing component also includes a lens holder 41 for fixing the multiple lens groups 32 of the multi-channel projection unit and a film holder 43 for fixing the film 33. Among them, the lens holder 41 is fixed on a fixing column extending from the back cover 15. A plurality of through holes 418 are formed on the lens holder 41, which are opposite to the light source 31, and a clamping groove 412 for clamping the multiple lenses of the corresponding lens group 32 is formed on the inner wall of each through hole 418. In addition, a groove (such as a groove 412 for fixing the film holder 43) is also formed in the lens holder 41. Figure 3 413) or a slot (such as a slot in which a portion of the film holder 43 is inserted from the outside into the lens holder 41 and fixed) Figure 5 413 ′), so that the film 33 is located between the first lens 321 and the second lens 322.

[0028] In this embodiment, the film support 43 includes a first cover 431 and a second cover 432 that can be interlocked. The first cover 431 is provided with a column 4311 extending toward the second cover 432. A corresponding hole 4321 is formed on the second cover 432, and a corresponding hole 331 is also formed on the film 33. The column 4311 of the first cover 431 passes through the hole 331 on the film 33, and then is inserted and fastened into the hole 4321 on the second cover 432. In addition, the periphery of the first cover 431 and the second cover 432 is also formed with a convex edge and a clearance position for limiting the position of the film. In other embodiments, the second cover can be omitted, and the column of the first cover passes through the hole on the film to achieve fixation and positioning. In other embodiments, the second cover can be omitted, and the periphery of the first cover is bent to form a slot for limiting the position of the film.

[0029] The lens holder 41 is generally in a shape in which each of the four tubes is connected to the sides of the other two tubes, that is, the four tubes are arranged in a row, two rows up and down. In order to facilitate the assembly and replacement of the lens and the film, it is split into three parts, which is equivalent to cutting off half of the two tubes in each row of the four tubes to form a groove. The lens holder 41 specifically includes a middle frame 411, an upper cover 413 and a lower cover 414 connected to the middle frame 411. One end of the middle frame 411 is defined as the light input end 4111, which is away from the light output port 11 of the housing 10, and the other end is defined as the light output end 4112, which is close to the light output port 11. The upper cover 413 and the lower cover 414 are connected to the light input end 4111 and the light output end 4112 and are arranged opposite to each other across the middle frame 411. That is, the upper cover 413 and the lower cover 414 are connected to the middle frame 411 in a direction perpendicular to the direction from the light input end 4111 to the light output end 4112.

[0030] The middle frame 411 is formed with two or more (two in this embodiment) side-by-side grooves 4113 penetrating the light input end 4111 and the light output end 4112 on one side facing the upper cover 413, and two or more (two in this embodiment) side-by-side grooves 4114 penetrating the light input end 4111 and the light output end 4112 are also formed on one side facing the lower cover 414. Two or more grooves 4131, 4141 are correspondingly formed on the upper cover 413 and the lower cover 414, and the grooves 4113, 4114 on the middle frame 411 correspond to the grooves 4131 of the upper cover 413 and the grooves 4141 of the lower cover 414 to form through holes 418.

[0031] The middle frame 411 is also formed with a slot 4115 for the film holder 43 to pass through, and the inner walls of the grooves 4113 and 4114 are both formed with slots 412 for fixing the corresponding lenses of the lens group 32. Correspondingly, the inner sides of the upper cover 413 and the lower cover 414 are also formed with slots 412 for fixing the corresponding lenses of the lens group 32 and a groove 4142 for inserting the side wall of the film holder 43. After the film holder 43 is fixed in the lens holder 41, it is located between the first lens and the second lens, and through holes are formed on the first cover 431 and the second cover 432 at positions corresponding to the through holes 418.

[0032] Particularly, in this embodiment, the dynamic display projection lamp has a central optical axis, and all through holes are inclined toward the central optical axis from the light input end 4111 to the light output end 4112 to ensure that each projection pattern can overlap at one position at a certain projection distance.

[0033] In the above embodiment, the connection between the middle frame 411, the upper cover 413 and the lower cover 414 is screw or bolt connection. In other embodiments, it can also be a snap-on connection.

[0034] During operation, the controller is used to control at least part of the light sources in the multi-channel projection unit to light up and extinguish in sequence, so that the projected film motion decomposition pattern is projected to the same overlapping focus position. By utilizing the visual retention phenomenon of the human eye, the decomposition diagrams with different lighting changes will be projected at the same position to form an animation effect, which is similar to the dynamic character effect of pedestrian traffic lights. It is very interesting and ornamental, and has a simple structure, small internal space requirements and low cost.

[0035] In summary, the improved dynamic display projection lamp of the first embodiment uses a lens bracket that is easy to disassemble to fix the lens group and the film, which is convenient for replacing the film and the lens, so that the projection lamp can often change the projected dynamic image, which is very interesting. The lens bracket can be made of resin or plastic, with a simple structure and easy manufacturing. The use of the film bracket improves the protection of the film and makes it easier to replace the film.

[0036] Please refer to Figure 4 and Figure 5 In the second embodiment of the variation of the first embodiment, the housing of the improved dynamic display projection lamp is divided into a detachably connected upper housing 101' and a lower housing 102' by a plane parallel to the light emitting direction to facilitate the assembly of the internal components. The housing has a light outlet 11', and a transparent optical sheet 13' is fixed at the light outlet 11'. The other end of the housing opposite to the light outlet 11' is a rear end 14', and a hole for inserting a power supply socket or connecting a power cord 16' is formed on the rear end 14' (not shown). A button hole 1011 is formed on the upper housing 101'. A circuit board 20' is fixed inside the button hole 1011, and a controller is arranged on the circuit board 20'. The controller has a button 21', and the silicone button cap of the button 21' extends out of the projection lamp from the button hole 1011. The user can use the button 21' to turn on, turn off, switch functions, etc. to the projection lamp. A through hole 17' is also formed on the lower housing 102', for inserting a heat-conducting column 21 of a heat sink 20 (hereinafter, similar parts are all labeled with the same reference numerals as in the first embodiment). The end of the heat sink 20 is rotatably connected to a base connecting rod 22, and the bottom of the base connecting rod 22 is connected to the base 23. Therefore, the improved dynamic display projection lamp can be fixed at an adjustable angle by means of the base 23 and the base connecting rod 22.

[0037] Similar to the first embodiment, a fixing assembly is also fixed in the housing, and the fixing assembly fixes the multi-channel projection unit. Each channel projection unit includes at least one light source 31, a lens group 32 composed of a plurality of lenses arranged in front of the at least one light source 31, and a film 33 inserted between the plurality of lenses of the lens group 32. The light source 31 and its fixing method, the structure and composition of the lens group 32, the film 33, and the structure of the film fixing frame 34, which is a fixing part of the film 33, are the same and similar to those of the first embodiment, and therefore will not be described in detail.

[0038] Similar to the first embodiment, the fixing assembly includes a circuit board 34 for fixing the light source 31, an L-shaped heat conductive sheet 35 and a film holder 43 for fixing the film 33, and also includes a lens holder 41' for fixing the multiple lens groups 32 of the multi-channel projection unit.

[0039] Different from the first embodiment, the lens holder 41' is fixed on the fixing column extending from the lower shell 102'. The lens holder 41' is formed with a plurality of through holes 418 opposite to the light source 31, and the inner wall of each through hole 418 is formed with a clamping groove 412 for clamping a plurality of lenses of the corresponding lens group 32. In addition, the lens holder 41' is also formed with a slot 412' for allowing a part of the film holder 43 to be inserted into the interior of the lens holder 41', so that the film 33 is located between the first lens 321 and the second lens 322.

[0040] In the embodiment, a projection unit is provided, which is divided into two groups and arranged side by side up and down. In this embodiment, four projection units are provided, all of which are arranged side by side, so the lens holder 41' is generally in the shape of four tubes whose sides are connected in sequence and arranged in a row. In order to facilitate the assembly and replacement of the lens and the film, it is split into two parts, which is equivalent to each tube being cut off in half along the axis to form a groove. Specifically, the lens holder 41' includes an upper cover 413' and a lower cover 414'. Four (two, three or more than four in other variations) grooves 4131' and 4141' are respectively formed on the upper cover 413' and the lower cover 414', and the grooves 4131' of the upper cover 413' and the grooves 4141' of the lower cover 414' correspond to each other to form a through hole 418.

[0041] The upper cover 413' and the lower cover 414' are formed with slots 412 for fixing the corresponding lenses of the lens group 32 on the inner side, and the lower cover 414' is also provided with a groove 4142' for inserting the side wall of the film holder 43. The slot 412' is formed on the upper cover 413', corresponding to the groove 4142'. The film holder 43 can be inserted from the outside of the lens holder into the inside of the lens holder through the slot 412', and is fastened in the groove 4142', located between the first lens and the second lens.

[0042] Similar to the first embodiment, the dynamic display projection lamp has a central optical axis, and all through holes are inclined toward the central optical axis to ensure that the projection patterns of each path can overlap at one position at a certain projection distance.

[0043] In the above embodiment, the connection between the upper cover 413' and the lower cover 414' is screw or bolt connection. In other embodiments, it can also be a snap-on connection.

[0044] The lens bracket of the improved dynamic display projection lamp of the second embodiment is also very convenient to disassemble, and it becomes easier to replace the film, and there is no need to disassemble the lens bracket, so that the projection lamp can often change the projected dynamic image, which is very interesting. The lens bracket can be made of resin or plastic, with a simple structure and easy manufacturing. The use of the film bracket improves the protection of the film and makes it easier to replace the film.

[0045] During operation, the control circuit is used to control each group of projection light paths to light up the light sources alternately in sequence, so that the projected film motion decomposition pattern is projected to the same overlapping focus position. By utilizing the visual retention phenomenon of the human eye, the decomposition diagrams with different lighting changes will be projected at the same position to form an animation effect, which is similar to the dynamic character effect of pedestrian traffic lights. It is very interesting and ornamental, and has a simple structure, small internal space requirements and low cost.

[0046] Although the present invention is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes according to the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An improved dynamic display projection lamp, comprising: Multi-channel projection unit, each projection unit includes: light source; a lens group consisting of a plurality of lenses disposed in front of the light source; and Film inserted between the multiple lenses of the lens group; A fixing component for fixing the multi-channel projection unit; and A controller for controlling at least a portion of the light sources in the multi-channel projection unit to light up and extinguish in sequence; Characterized in that the fixing assembly comprises: A lens holder for fixing the multiple lens groups of the multi-channel projection unit, wherein the lens holder is formed with multiple through holes, and the inner wall of each through hole is formed with a clamping groove for clamping the multiple lenses of the corresponding lens group; a film support for fixing the film; and A circuit board for fixing the multiple light sources of the multi-channel projection unit, wherein the circuit board is fixed to one side of the light entrance of the through hole of the lens holder, so that the multiple light sources are opposite to the multiple through holes; The film holder is fixed in the lens holder or at least a part of the film holder is inserted between the lenses from the lens holder, so that the film is located between two lenses among the plurality of lenses; At least one of the lens groups includes a first lens, a second lens, and a third lens arranged in sequence from the light entrance to the light exit of the through hole, the film is located between the first lens and the second lens, the first lens, the second lens, and the third lens are all convex lenses, and the positions of the three lenses and the light source are arranged so that the first lens focuses the light emitted by the light source, the second lens amplifies the light passing through the film, and the third lens focuses the light passing through the second lens sheet; The film support comprises a first cover and a second cover which can be interlocked, the first cover is provided with a column extending toward the second cover, the second cover is formed with a corresponding hole, the column of the first cover is inserted into and fastened in the hole of the second cover, the film is formed with a hole corresponding to the column of the first cover, the column of the first cover passes through the hole on the film and is fastened in the hole on the second cover; The lens holder comprises a middle frame, an upper cover and a lower cover connected to the middle frame; one end of the middle frame is defined as a light input end, and the other opposite end is defined as a light output end; the upper cover and the lower cover connect the light input end and the light output end and are arranged oppositely with the middle frame in between; the middle frame is formed with two or more grooves arranged side by side penetrating the light input end and the light output end on a surface facing the upper cover, and is also formed with two or more grooves arranged side by side penetrating the light input end and the light output end on a surface facing the lower cover; two or more grooves are correspondingly formed on the upper cover and the lower cover, and the grooves on the middle frame correspond to the grooves of the upper cover and the grooves of the lower cover to form the through holes; a slot is formed on the middle frame for the film holder to pass through, and grooves for inserting the side walls of the film holder are also formed on the inner sides of the upper cover and the lower cover; the improved dynamic display projection lamp has a central optical axis, and the through hole is inclined toward the central optical axis from the light input end to the light output end.

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