CN108253345B

CN108253345B - An improved dynamic display projection lamp

Info

Publication number: CN108253345B
Application number: CN201810041365.7A
Authority: CN
Inventors: 奚俊
Original assignee: Guangdong Yuhao Electronics Co ltd
Current assignee: Guangdong Yuhao Electronics Co ltd
Priority date: 2018-01-16
Filing date: 2018-01-16
Publication date: 2025-01-07
Anticipated expiration: 2038-01-16
Also published as: CN108253345A

Abstract

The improved dynamic display projection lamp comprises a multipath projection unit, and a fixing component for fixing the multipath projection unit comprises a lens bracket and a film bracket for fixing a film. The lens bracket is provided with a plurality of through holes, and the inner wall of each through hole is provided with clamping grooves for clamping a plurality of lenses of the corresponding lens group. The film support is fixed in the lens support or at least one part of the film support is inserted between the lenses from the lens support, so that the film is positioned between two lenses in the plurality of lenses. The improved dynamic display projection lamp utilizes a lens bracket and a film bracket with simple structure to fix a single row or two rows of multi-path projection units which are arranged up and down, and then utilizes a controller to sequentially utilize the multi-path projection units to sequentially project patterns, so as to form a dynamic pattern projection effect. In addition, the film has the advantage of easy replacement.

Description

Improved dynamic display projection lamp

Technical Field

The present invention relates to projection lamps and, more particularly, to an improved dynamic display projection lamp.

Background

Currently, the projection pattern lamps on the market are divided into several types, one type is static projection, and the projected picture is static and is only displayed as a picture. The other is dynamic projection. In the dynamic projection technology, a motor drives a pattern to rotate to realize dynamic projection, and the pattern integrally moves along a certain track similar to a horse race lamp. Another dynamic projection is similar to an old-fashioned movie player, in which a motion picture film is driven to move rapidly to project, and an animation effect is generated by using the visual persistence of human eyes, but the movie player has a complex structure and high price, and is not suitable for common consumer electronic products.

Disclosure of Invention

The invention aims to provide an improved dynamic display projection lamp which can realize simple dynamic pattern projection display effect without a motor and a rotating mechanism.

An improved dynamic display projection lamp includes a multiple projection unit, a fixture assembly holding the multiple projection unit, and a controller for controlling sequentially turning on and off at least a portion of the light sources in the multiple projection unit. Each projection unit comprises a light source, a lens group consisting of a plurality of lenses arranged in front of the light source, and a film interposed between the plurality of lenses of the lens group. The fixing component comprises a lens bracket for fixing a plurality of groups of lens groups of the multi-path projection unit, a film bracket for fixing the film and a circuit board for fixing a plurality of light sources of the multi-path projection unit. The lens bracket is provided with a plurality of through holes, and the inner wall of each through hole is provided with clamping grooves for clamping a plurality of lenses of the corresponding lens group. 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 support is fixed in the lens support or at least one part of the film support is inserted between the lenses from the lens support, so that the film is positioned between two lenses in the plurality of lenses.

As one embodiment, at least one of the lens groups includes a first lens, a second lens and a third lens which are sequentially arranged from the light inlet to the light outlet of the through hole.

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

As one implementation mode, the first lens, the second lens and the third lens are all convex lenses, the positions between the first lens, the second lens and the light source are arranged to enable the first lens to generate focusing function on light emitted by the light source, the second lens generates amplifying function on light passing through the film, and the third lens generates focusing function on light passing through the second lens.

As an implementation mode, the film bracket comprises a first cover and a second cover which can be mutually buckled, wherein the first cover is provided with a cylinder extending towards the second cover, the second cover is provided with a corresponding hole, and the cylinder of the first cover is inserted into and fastened in the hole of the second cover.

In one embodiment, the film is formed with a hole corresponding to the cylinder of the first cover, and the cylinder of the first cover is fastened in the hole of the second cover through the hole of the film.

As one embodiment, the lens holder includes a middle frame, an upper cover and a lower cover coupled to the middle frame. One end of the middle frame is defined as a light-in end, and the opposite end is defined as a light-out end. The upper cover and the lower cover are connected with the light inlet end and the light outlet end and are oppositely arranged through the middle frame. The middle frame is provided with two or more grooves which are arranged side by side and penetrate through the light-penetrating end and the light-emitting end on one surface of the middle frame facing the upper cover, and two or more grooves which are arranged side by side and penetrate through the light-penetrating end and the light-emitting end are also formed on one surface of the middle frame facing the lower cover. Two or more grooves are correspondingly formed on the upper cover and the lower cover, and then the grooves on the middle frame are respectively in one-to-one correspondence with the grooves of the upper cover and the grooves of the lower cover to form the through holes.

Preferably, the middle frame is provided with a slot for the film support to pass through, the inner sides of the upper cover and the lower cover are also provided with grooves for the side walls of the film support to be inserted, the improved dynamic display projection lamp is provided with a central optical axis, and the through hole is inclined towards the central optical axis from the light inlet end to the light outlet end.

As another embodiment, the lens holder includes an upper cover and a lower cover that are fastened to each other. One end of the lens support is defined as a light-in end, and the opposite end is defined as a light-out end. The inner sides of the upper cover and the lower cover are respectively provided with a plurality of grooves which are penetrated into the light end and the light emitting end and are arranged side by side, and the grooves on the upper cover are in one-to-one correspondence with the grooves on the lower cover to form the penetration holes.

Preferably, the upper cover is formed with a slot into which a part of the film support is inserted, and the inner side of the lower cover is also formed with a groove into which the side wall of the film support is inserted.

The improved dynamic display projection lamp utilizes a lens bracket and a film bracket with simple structure to fix a single row or two rows of multi-path projection units which are arranged up and down, and then utilizes a controller to sequentially utilize the multi-path projection units to sequentially project patterns, so as to form a dynamic pattern projection effect. In addition, the film has the advantage of easy replacement.

Drawings

Fig. 1 is an exploded view of a modified dynamic display projection lamp according to a first embodiment of the present invention.

Fig. 2 is a partial exploded view of the mounting assembly of the improved dynamic display projection lamp of fig. 1.

Fig. 3 is a perspective view of the lower housing of the fixing assembly of fig. 2.

Fig. 4 is an exploded view of a modified dynamic display projection lamp according to a second embodiment of the present invention.

Fig. 5 is a partial exploded view of the mounting assembly of the improved dynamic display projection lamp of fig. 4.

Detailed Description

The improved dynamic display projection lamp of the present invention will be described in further detail with reference to specific embodiments and drawings.

As shown in fig. 1 to 3, in a first embodiment of the present invention, a housing 10 of a modified dynamic display projection lamp has a light outlet 11, an annular front cover 12 is fixed at the light outlet 11, and a transparent optical sheet 13 is sandwiched between the annular front cover 12 and the light outlet 11. The other end of the housing 10 opposite to the light outlet 11 is formed with a rear port 14, and a rear cover 15 is fixed at the rear port 14. The rear cover 15 is formed with a hole 151 into which the power supply socket 16 is inserted or into which a power supply wire is inserted, and a key hole 152. A circuit board 20 is fixed on the inner side of the rear cover 15, a controller is arranged on the circuit board 20, the controller is provided with a key 21, a silica gel key cap 22 of the key 21 extends out of the projection lamp from the key hole 152, and a user can perform operations such as starting up, shutting down, function switching and the like on the projection lamp by using the key cap 22. A through hole 17 is also formed in the sidewall of the housing 10 for insertion of a heat conductive post 21 of a heat sink 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 a base 23. Thus, the improved dynamic display projection lamp is angularly fixed by the base 23 and the base connecting rod 22.

In addition, a fixing component is fixed in the shell, and the multipath projection unit is fixed by the fixing component. Wherein each projection unit includes at least one light source 31, a lens group 32 composed of a plurality of lenses provided in front of the at least one light source 31, and a film 33 interposed between the plurality of lenses of the lens group 32.

The light source 31 may be an LED bead or other type of point light source or bulb. In this embodiment, each projection unit is provided with an LED lamp bead. All of the LED light beads are secured to a circuit board 34. And the circuit board 34 is attached to one of the L-shaped heat conductive sheets 35. The other of the L-shaped heat conductive sheets 35 is in contact with the heat conductive column 21 of the heat sink 20 through a heat conductive pad or directly. The heat generated by the light source is conducted to the heat sink 20 by the L-shaped heat conducting fin 35, and finally the heat is dissipated by the heat sink part arranged outside the housing 10, so that the light source can work normally.

In this embodiment, the lens group 32 of each projection unit includes three lenses, namely a first lens 321, a second lens 322 and a third lens 323, which are sequentially arranged from the inside of the fixed assembly toward the light outlet 11 of the housing 10, and are all convex lenses. In other embodiments, two or more lens groups may be provided according to specific needs, and the number and types of lenses included in each lens group may be different.

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 may be configured with one film, or multiple projection units may share different areas of one film. The film 33 may be a projection film manufactured by using an exposure method, or may include a substrate made of PET (polyethylene terephthalate ) and a plurality of color printing layers printed on the substrate using a screen printing technique. The color of each color printing layer is different, the printed patterns are different, and the multiple layers are laminated to form a color pattern, such as a color castle or a bundle of flowers. And the printing ink of the printing layer is ultraviolet-resistant printing ink. Thus, the film 22 can resist 80 ℃ high temperature, and can not fade or deform after long-time use under the irradiation of the LED lamp. In addition, the thickness of the base layer is 0.8-1.5 mm, and the thickness of all the printing layers is 0.05-0.1 mm. Corresponding images are formed on the positions of the film corresponding to each path of projection unit, so that the patterns on the film are projected after the light of the light source passes through the lens group and the film.

In this embodiment, the first lens 321, the second lens 322 and the third lens 323 are all convex lenses, the first lens 321 is a hemispherical lens, the second lens 322 is a convex lens protruding towards the first lens 321, the third lens 323 is a convex lens protruding towards the light outlet 11, the positions between the three lenses and the light source 21 are arranged to enable the first lens 321 to focus the light emitted by the light source 21, the second lens 322 to amplify the light passing through the film 33, and the third lens 323 to focus the light passing through the second lens 322 and project the light to a preset position outside the projection lamp while ensuring the image clarity.

As described above, the fixing assembly includes the lens holder 41 for fixing the plurality of groups of lens groups 32 of the multi-path projection unit and the film holder 43 for fixing the film 33, in addition to the circuit board 34 for fixing the light source 31 and the L-shaped heat conductive sheet 35. The lens holder 41 is fixed to a fixing post extending from the rear cover 15. The lens holder 41 has a plurality of through holes 418 facing the light source 31, and each of the through holes 418 has a plurality of grooves 412 formed in an inner wall thereof for fixing the lenses of the corresponding lens group 32. In addition, a groove (413 in fig. 3) for fixing the film holder 43 or a slot (413' in fig. 5) for inserting a part of the film holder 43 into the inside of the lens holder 41 from the outside and fixing is formed in the lens holder 41 so that the film 33 is located between the first lens 321 and the second lens 322.

In this embodiment, the film bracket 43 includes a first cover 431 and a second cover 432 that can be fastened to each other. The first cover 431 is provided with a cylinder 4311 extending toward the second cover 432. The second cover 432 is formed with a corresponding hole 4321, the film 33 is also formed with a corresponding hole 331, and the cylinder 4311 of the first cover 431 is inserted through the hole 331 of the film 33 and then fastened in the hole 4321 of the second cover 432. In addition, the peripheries of the first cover 431 and the second cover 432 are also formed with convex edges and avoidance spaces for limiting the film. In other embodiments, the second cover may be omitted, and the post of the first cover passes through the hole on the film to fix and position. In other embodiments, the second cover may be omitted, and the periphery of the first cover is bent to form a clamping groove for limiting the position of the film.

The lens holder 41 is generally in the shape of four tubes each connected to the sides of the other two tubes, i.e. four tubes are arranged in a row, two up and down. To facilitate assembly and replacement of the lens and the film, the lens and film are split into three parts, corresponding to two tubes of each row of four tubes being cut out in half to form a groove. The lens holder 41 specifically includes a middle frame 411, an upper cover 413 and a lower cover 414 attached to the middle frame 411. One end of the middle frame 411 is defined as a light inlet 4111, which is far from the light outlet 11 of the housing 10, and the other opposite end is defined as a light outlet 4112, which is near to the light outlet 11. The upper cover 413 and the lower cover 414 are connected to the light-incoming end 4111 and the light-outgoing end 4112 and are disposed opposite to each other with the middle frame 411 interposed therebetween. That is, the upper cover 413 and the lower cover 414 are connected to the middle frame 411 from a direction perpendicular to the direction of the light inlet end 4111 to the light outlet end 4112.

The middle frame 411 is formed with two or more (two in this embodiment) grooves 4113 disposed side by side penetrating the light entrance end 4111 and the light exit end 4112 on a side facing the upper cover 413, and is also formed with two or more (two in this embodiment) grooves 4114 disposed side by side penetrating the light entrance end 4111 and the light exit end 4112 on a side facing the lower cover 414. Two or more grooves 4131, 4141 are formed on the upper cover 413 and the lower cover 414, respectively, and then the grooves 4113, 4114 on the middle frame 411 are formed with through holes 418 in one-to-one correspondence with the grooves 4131 of the upper cover 413 and the grooves 4141 of the lower cover 414, respectively.

The middle frame 411 is further formed with a slot 4115 through which the film support 43 passes, and the inner walls of the grooves 4113 and 4114 are each formed with a clamping groove 412 for clamping a plurality of lenses of the corresponding lens group 32. Correspondingly, the inner sides of the upper cover 413 and the lower cover 414 are also formed with a clamping groove 412 for clamping the plurality of lenses of the corresponding 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 positioned between the first lens and the second lens, and through holes are formed in the first cover 431 and the second cover 432 at positions corresponding to the through holes 418.

In particular, in the present embodiment, the dynamic display projection lamp has a central optical axis, and all the through holes are inclined toward the central optical axis from the light incident end 4111 to the light emergent end 4112, so as to ensure that the projection patterns of each path can be overlapped to a position at a certain projection distance.

The connection of the middle frame 411, the upper cover 413 and the lower cover 414 in the above embodiment is screw and bolt connection. Other embodiments may also be a snap-in connection.

In operation, the controller is used for controlling at least one part of the light sources in the multipath projection unit to be sequentially turned on and off, so that the projected film action decomposition patterns are projected to the same overlapped focusing position, the vision detention phenomenon of human eyes is utilized, and the decomposition patterns with different turning on changes can be projected to the same position to form an animation effect, similar to the dynamic figure effect of the pavement traffic light, and the intelligent illumination system has strong interestingness and ornamental value, and is simple in mechanism, less in internal space requirement and low in cost.

In summary, the improved dynamic display projection lamp according to the first embodiment uses the lens support which is convenient to detach to fix the lens group and the film, and facilitates the replacement of the film and the lens, so that the projection lamp can replace the projected dynamic image from time to time, and the interest is strong. The lens support can be made of resin or plastic, and has simple structure and convenient manufacture. The film support is utilized, so that the protection force of the film is improved, and the film is simpler to replace.

Referring to fig. 4 and 5, in a second modified embodiment of the first embodiment, a housing of the improved dynamic display projection lamp is divided into an upper housing 101 'and a lower housing 102' which are detachably connected by a plane parallel to the light emitting direction, so as to facilitate assembly of internal devices. The shell is provided with a light outlet 11', and a transparent optical sheet 13' is fixed at the light outlet 11 '. The other end of the housing opposite the light outlet 11 'is a rear end 14', and the rear end 14 'is formed with a hole (not shown) into which a power supply socket is inserted or into which a power supply line 16' is inserted. The upper case 101' is formed with a key hole 1011. A circuit board 20' is fixed on the inner side of the key hole 1011, a controller is arranged on the circuit board 20', the controller is provided with a key 21', a silica gel key cap of the key 21' extends out of the projection lamp from the key hole 1011, and a user can perform operations such as starting up, shutting down, function switching and the like on the projection lamp by using the key 21 '. The lower housing 102 'is also formed with a through hole 17' for insertion of a heat conductive post 21 of a heat sink 20 (hereinafter, similar parts are designated by the same reference numerals as in the first embodiment). 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 a base 23. Thus, the improved dynamic display projection lamp is angularly fixed by the base 23 and the base connecting rod 22.

The first embodiment is the same as the first embodiment, and a fixing component is fixed in the housing and is used for fixing the multipath projection units. Wherein each projection unit includes at least one light source 31, a lens group 32 composed of a plurality of lenses provided in front of the at least one light source 31, and a film 33 interposed between the plurality of lenses of the lens group 32. The light source 31 and its fixing manner, the structure and constitution of the lens group 32, the film 33 and the film fixing frame 34 of the fixing member of the film 33 are the same as or similar to those of the first embodiment, and thus will not be described again.

As in the first embodiment, the fixing assembly includes a lens holder 41' for fixing the plurality of lens groups 32 of the multi-path projection unit, in addition to the circuit board 34 for fixing the light source 31, the L-shaped heat conductive sheet 35, and the film holder 43 for fixing the film 33.

Unlike the first embodiment, the lens holder 41 'is fixed to a fixing post extended from the lower case 102'. The lens holder 41' has a plurality of through holes 418 formed therein so as to face the light source 31, and a plurality of engaging grooves 412 for engaging the lenses of the corresponding lens group 32 are formed in the inner wall of each through hole 418. Further, a slot 412' for allowing a portion of the film holder 43 to be inserted into the inside of the lens holder 41' is formed on the lens holder 41' such that the film 33 is located between the first lens 321 and the second lens 322.

In the embodiment, the road projection units are arranged in two groups, which are arranged side by side up and down. In this embodiment, four projection units are provided, all of which are arranged side by side, so that the lens holder 41' has a shape in which four tube sides are sequentially connected to each other in a row. To facilitate assembly and replacement of the lens and the film, the lens and film are split into two parts, corresponding to each tube being cut in half along the axis to form a slot. 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', 4141' are formed in the upper cover 413 'and the lower cover 414', respectively, and the grooves 4131 'of the upper cover 413' and the grooves 4141 'of the lower cover 414' are in one-to-one correspondence to form the through holes 418.

The upper cover 413 'and the lower cover 414' are formed with grooves 412 for fixing the lenses of the corresponding lens group 32, and the lower cover 414 'is further formed with grooves 4142' for inserting the side walls of the film holder 43. A slot 412' is formed on the upper cover 413' corresponding to the groove 4142'. The film holder 43 is insertable into the lens holder from the outside of the lens holder from the slot 412 'and is secured within the recess 4142' between the first lens and the second lens.

As in the first embodiment, the dynamic display projection lamp has a central optical axis, and all the through holes are inclined to the central optical axis to ensure that the projection patterns of each path can be overlapped to a position at a certain projection distance.

The connection of the upper cover 413 'and the lower cover 414' in the above embodiment is a screw or bolt connection. Other embodiments may also be a snap-in connection.

The lens support of the improved dynamic display projection lamp of the second embodiment is very convenient to detach, and the film is easier to replace, and the lens support does not need to be detached, so that the projection lamp can replace the projected dynamic image from time to time, and the interestingness is high. The lens support can be made of resin or plastic, and has simple structure and convenient manufacture. The film support is utilized, so that the protection force of the film is improved, and the film is simpler to replace.

In operation, the control circuit is used for controlling each group of projection light paths to alternately light the light sources in sequence, so that the projected film action decomposition patterns are projected to the same overlapped focusing position, the vision retention phenomenon of human eyes is utilized, and the decomposition patterns with different lighting changes can be projected to the same position to form an animation effect, similar to the dynamic figure effect of the pavement traffic light, and the intelligent illumination system has strong interestingness and ornamental value, and has the advantages of simple mechanism, less internal space requirement and low cost.

While the invention has been described in conjunction with the specific embodiments above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, all such alternatives, modifications, and variations are included within the spirit and scope of the following 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.