DE202023000739U1 - Projection device for creating a light effect of the galactic starry sky - Google Patents

Abstract

Projection device for generating a light effect of the galactic starry sky, characterized in that it comprises:
a light emitting component comprising at least a first incoherent light source and at least a first condenser lens, the first condenser lens being disposed on an irradiated surface of the first incoherent light source;
a film component comprising a film having a galactic starry sky pattern, the film being disposed on a different side of the first condenser lens with respect to the first incoherent light source; and
an imaging component comprising at least three lenses, the three lenses being an imaging lens, a focusing lens, and a wide-angle lens, each of which is sequentially arranged in the projection direction of the film.

Description

technical field

The present utility model relates to the technical field of projection, in particular a projection device for generating a light effect of the galactic starry sky.

State of the art

A projection lamp, also known as an imaging lamp, is an electrical device that can project images or text onto the floor or a wall. In daily life, projection lamps are used in many fields, such as stage, bedroom, steam light and other places. However, since most of these areas need to display the content of the pattern, the main research and development direction of the existing projection lamps is to diversify the display of the pattern while ignoring the specific effect of the pattern, so most of the existing projection lamps have a problem with the relatively low sharpness of the projected pattern or low brightness, which significantly affects the user experience.

Content of the present utility model

The main purpose of the present utility model is to provide a projection device for generating a light effect of the galactic starry sky to improve the practicability of the projection device.

• eine lichtemittierende Komponente, die mindestens eine erste inkohärente Lichtquelle und mindestens eine erste Kondensorlinse umfasst, wobei die erste Kondensorlinse auf einer bestrahlten Oberfläche der ersten inkohärenten Lichtquelle angeordnet ist;
• eine Filmkomponente, die einen Film mit einem galaktischen Sternhimmelmuster umfasst, wobei der Film auf einer anderen Seite der ersten Kondensorlinse in Bezug auf die erste inkohärente Lichtquelle angeordnet ist; und
• eine Abbildungskomponente, die mindestens drei Linsen umfasst, wobei die drei Linsen jeweils eine Abbildungslinse, eine Einstellungslinse und eine Weitwinkellinse sind, die jeweils in der Projektionsrichtung des Films nacheinander angeordnet sind.

In order to achieve the above purpose, the present utility model provides a projection device for generating a light effect of the galactic starry sky, comprising:

• a light emitting component comprising at least a first incoherent light source and at least a first condenser lens, the first condenser lens being disposed on an irradiated surface of the first incoherent light source;
• a film component comprising a film having a galactic starry sky pattern, the film being disposed on a different side of the first condenser lens with respect to the first incoherent light source; and
• an imaging component comprising at least three lenses, the three lenses being an imaging lens, a focusing lens, and a wide-angle lens, each of which is sequentially arranged in the projection direction of the film.

Optionally, the projection device further comprises a first housing and an audio component, wherein the light-emitting component is arranged in the first housing, and wherein the first housing is provided with a first installation hole in which the film component is detachably arranged, and the audio component comprises a control board, an electronic tag corresponding to the film, an identification module disposed on the control board for identifying the electronic tag, a storage medium on which audio corresponding to the galactic starry sky pattern is pre-stored, and a speaker electrically connected to the control board, and the electronic tag on the Film component is arranged, and wherein the control board, the storage medium and the speaker are arranged in the first housing.

Furthermore, as illustrated in Figures 12 to 14, the electronic tag is an RFID tag, and the identification module comprises an RFID chip.

Optionally, the film component comprises a second housing and a film carrier, wherein the film is arranged on the film carrier, and the second housing is fixed in the first housing corresponding to the position of the first installation hole, and the film carrier is inserted into the first installation hole and into the second housing protrudes.

Optionally, the control board is attached to the bottom of the second housing.

Optionally, the film component further includes a rotating plate and a pressure plate, the rotating plate is provided with a mounting groove, and the film and the pressure plate are fixed in the mounting groove, and the rotating plate and the pressure plate are made of a transparent material , and wherein an installation groove is provided on the film carrier, and wherein the rotating plate is placed in the installation groove. Optionally, the electronic tag is formed into a ring shape, with an annular groove provided on the rotating plate, and the electronic tag is placed in the annular groove, and the film is located at the central part of the electronic tag.

Optionally, the projection device further includes a first drive component disposed within the first housing and including a motor, a mounting plate, and a gear set, the mounting plate being mounted within the first housing, the motor being fixed to the mounting plate, and the side wall of the rotating plate is formed in a tooth shape, which meshes with the gear train, so that the motor drives the rotating plate to rotate through the gear train.

Optionally, the first drive component is positioned below the first incoherent light source, the first drive component further comprising a rotary shaft having one end attached to the mounting plate and another end attached to the second housing, the gear set including a drive gear arranged on the motor shaft, a drive gear on a first gear mounted on the rotary shaft and meshing with the drive gear, and a second gear mounted on the rotary shaft and fixedly connected to the first gear, and wherein the second gear is meshed with the rotating plate, and wherein the number of teeth of the second gear is less than is the number of teeth of the first gear wheel.

Optionally, the second housing comprises an upper housing and a lower housing, wherein an avoidance groove for avoiding the second gear is provided on the film carrier and the lower housing, and the rotary shaft is fixed to the upper housing through the avoidance groove; and a restriction ring corresponding to the annular groove is disposed on the bottom wall of the installation groove.

Optionally, the imaging component includes a first sleeve, wherein the imaging lens, the focusing lens, and the wide-angle lens are disposed in the first sleeve;
wherein a mounting boss is disposed at the tip of the second housing, and wherein the first sleeve is threadedly connected to the mounting boss such that the first sleeve reciprocates with respect to the mounting boss along the extending direction of the axis of the first sleeve.

Optionally, the light emitting component further includes a second condenser lens disposed on a different side of the first condenser lens with respect to the first incoherent light source.

Optionally, the light emitting component further comprises a second sleeve arranged on the first incoherent light source, the first condenser lens and the second condenser lens being arranged in the second sleeve.

Optionally, the first incoherent light source, the first condenser lens, the film and the imaging component are each arranged coaxially.

Optionally, the electronic label is an NFC label, with the identification module comprising an NFC chip.

Optionally, the projection device further comprises a laser component comprising at least one coherent light source, at least one diffractive medium and a second drive component for driving the diffractive medium to rotate, the diffractive medium being arranged at the irradiated surface of the coherent light source.

In the technical solution of the present utility model, the first condenser lens is arranged on an irradiated surface of the first incoherent light source, the film is arranged on another side of the first condenser lens with respect to the first incoherent light source, and the imaging component is arranged on the other side of the film is arranged with respect to the first condenser lens, and wherein the imaging component comprises at least three lenses, the three lenses each being an imaging lens, a focusing lens and a wide-angle lens, each arranged in sequence in the projection direction of the film; it should be explained that the imaging lens is configured to collect the effective light points of the pattern passing through the film to form a real image pattern and project it onto the focusing lens, the focusing lens is configured to refocus the real image and to correct and then project onto the wide-angle lens, the wide-angle lens is configured to magnify the set real image pattern and then project onto the light and shade bearing surface to display a clear enlarged pattern effect on the light and shade bearing surface, and with By arranging a plurality of lenses having different functions, the sharpness of the pattern projected by the projection device is effectively improved, thus the practicability of the projection device is effectively improved.

character list

• 1 zeigt eine schematische Strukturansicht eines Ausführungsbeispiels der Projektionsvorrichtung gemäß dem vorliegenden Gebrauchsmuster.
• 2 zeigt eine schematische Strukturansicht eines anderen Ausführungsbeispiels der Projektionsvorrichtung gemäß dem vorliegenden Gebrauchsmuster.
• 3 zeigt eine Schnittansicht einer Projektionsvorrichtung gemäß dem vorliegenden Gebrauchsmuster.
• 4 zeigt eine schematische Strukturansicht einer lichtemittierenden Komponente, einer Filmkomponente und einer Audiokomponente.
• 5 zeigt eine schematische Strukturansicht einer lichtemittierenden Komponente, einer Filmkomponente und einer Audiokomponente im zerlegten Zustand aus einer Perspektive.
• 6 zeigt eine schematische Strukturansicht einer lichtemittierenden Komponente, einer Filmkomponente und einer Audiokomponente im zerlegten Zustand aus einer anderen Perspektive.
• 7 zeigt ein schematisches Diagramm des optischen Prinzips einer Projektionsvorrichtung gemäß dem vorliegenden Gebrauchsmuster.

In order to explain the technical solutions in the exemplary embodiments of the present utility model or in the prior art more clearly, the figures to be used in the explanation of the exemplary embodiments or the prior art are briefly presented below. Obviously, the figures described below only show a few exemplary embodiments of the present utility model. Those of ordinary skill in the art can obtain other figures based on the structures represented by the figures without having any creative work.

• 1 Fig. 12 shows a schematic structural view of an embodiment of the projection device according to the present utility model.
• 2 Fig. 12 shows a schematic structural view of another embodiment of the projection device according to the present utility model.
• 3 shows a sectional view of a projection device according to the present utility model.
• 4 FIG. 12 shows a schematic structural view of a light-emitting component, a film component, and an audio component.
• 5 12 is a schematic structural view of a disassembled state of a light-emitting component, a film component, and an audio component from a perspective view.
• 6 Fig. 12 shows a schematic structural view of a disassembled state of a light-emitting component, a film component and an audio component from a different perspective.
• 7 Fig. 12 shows a schematic diagram of the optical principle of a projection device according to the present utility model.

Reference List

10

First case First

11

Installation hole First incoherent

21

Light Source First

22

Condenser Lens Second

23

condenser lens

24

Second sleeve

31

Electronic control board

32

label

33

speaker

41

imaging lens_

42

adjustment lens

43

wide angle lens

44

First sleeve

70

bracket

51

Movie Upper Case

521

lower case

522

attachment

523

pounce

53

film carrier

531

installation groove

532

avoidance groove

54

perimeter ring

55

rotating plate

551

mounting groove

552

Ring groove

56

printing plate

61

engine mounting plate

62

e

65

Second Gear

66

rotary shaft

63

Drive gear first

64

gear wheel

The implementation, the functional features and the advantages of the present utility model are explained in more detail with reference to the accompanying drawings in combination with exemplary embodiments.

Detailed Embodiments

In connection with figures in the exemplary embodiments of the present utility model, the technical solutions in the exemplary embodiments of the present utility model are explained clearly and completely in the following.

Obviously, the illustrated embodiments do not represent all embodiments, but only a part of the embodiments of the present utility model exhaust gas cleaning unit. All other embodiments, which can be obtained by the person skilled in the art on the basis of the embodiments in the present utility model without creative work, should be considered dated be considered covered by the scope of protection of the present utility model.

It should be noted that when an embodiment of the present utility model includes directional information (such as up, down, left, right, front, back...), the directional information is only used to indicate the relative positional relationship, movement, etc .to declare between the components in a particular attitude (as shown in the attached drawings) and when that particular attitude is changed, the directional indications change accordingly.

In the embodiment of the present utility model, when there is an explanation of "first", "second", etc., the explanation of "first", "second", etc. is used only for description and cannot be construed as having the relative meaning instruct or imply or imply the number of technical features instructed. Because of this, the features defined with “the first”, “the second” can explicitly or implicitly include at least one of the features. When the word "and/or" appears in the text, it means that three parallel solutions are included, e.g. in the case of "A and/or B" the solution A, the solution B or the solutions where both A and B are met. Furthermore, the technical solutions between the different embodiments can be combined with each other, but only on the basis that they can be realized by a person with ordinary technical knowledge. If the combination of technical solutions seems contradictory or cannot be realized, it should be assumed that such a combination of technical solutions does not exist and does not fall within the scope of the present utility model. The present utility model provides a projection device for generating a light effect of the galactic starry sky.

• eine lichtemittierende Komponente, die mindestens eine erste inkohärente Lichtquelle 21 und mindestens eine erste Kondensorlinse 22 umfasst, wobei die erste Kondensorlinse 22 auf einer bestrahlten Oberfläche der ersten inkohärenten Lichtquelle 21 angeordnet ist;
• eine Filmkomponente, die einen Film 51 mit einem galaktischen Sternhimmelmuster umfasst, wobei der Film 51 auf einer anderen Seite der ersten Kondensorlinse 22 in Bezug auf die erste inkohärente Lichtquelle 21 angeordnet ist; und
• eine Abbildungskomponente, die mindestens drei Linsen umfasst, wobei die drei Linsen jeweils eine Abbildungslinse 41, eine Einstellungslinse 42 und eine Weitwinkellinse 43 sind, die jeweils in der Projektionsrichtung des Films 51 nacheinander angeordnet sind.

In an embodiment of the present utility model, as in 1 until 7 shown, the projection device comprises:

• a light-emitting component comprising at least a first incoherent light source 21 and at least a first condenser lens 22, the first condenser lens 22 being arranged on an irradiated surface of the first incoherent light source 21;
• a film component comprising a film 51 with a galactic starry sky pattern, the film 51 being arranged on another side of the first condenser lens 22 with respect to the first incoherent light source 21; and
• an imaging component comprising at least three lenses, the three lenses being an imaging lens 41, a focusing lens 42, and a wide-angle lens 43, respectively, which are sequentially arranged in the projection direction of the film 51, respectively.

In the present embodiment, the first incoherent light source 21 is a light emitting element of the projection device to irradiate the pattern and thus project the pattern onto the light and shadow bearing surface, the first incoherent light sources 21 being provided in number more than 1 can to increase the light intensity, and wherein the first condenser lens 22 is configured to focus the light emitted from the first incoherent light source 21 to increase the light intensity, and wherein the first condenser lens on the irradiated surface of the first incoherent light source 21 is arranged.

The film 51 is a pattern-bearing element of the projection device, on the film 51 a pattern resembling the galactic starry sky is arranged, and the film is arranged on another side of the first condenser lens 22 with respect to the first incoherent light source 21 , so that the galactic starry sky pattern on the film 51 is illuminated on the light and shade bearing surface when the first condenser lens 22 projects the focused light onto the film 51, thus the light and shade bearing surface becomes an effect of the galactic starry sky displayed.

The imaging component is configured to process the light points of the pattern passing through the film 51 in order to display the pattern on the film 51 clearly and completely on the light and shadow bearing surface, in particular an imaging lens 41, a focusing lens 42 and a wide-angle lens 43 are sequentially arranged in the projection direction of the film 51, the imaging lens 41 is configured to collect the effective light spots of the pattern passing through the film 51 to form a real image pattern and project it onto the focusing lens 42, then the focusing lens 42 adjusts that readjusts and corrects real image patterns and projects them onto the wide-angle lens 43, the wide-angle lenses 43 enlarges the adjusted real image pattern and projects it onto the light and shade bearing surface to display a clear magnified pattern effect on the light and shade bearing surface.

It should be noted that the first incoherent light source 21, the first condenser lens 22, the film 51 and the lens of the imaging component are each coaxially arranged to effectively reduce the loss of the light emitted from the first incoherent light source 21, in the way increases the brightness of the pattern projected by the projection device.

In the technical solution of the present utility model, the first condenser lens 22 is arranged on an irradiated surface of the first incoherent light source 21, with the film 51 on a different side of the first condenser lens 22 with respect to the first incoherent light source 21 and wherein the imaging component is arranged on the other side of the film 51 with respect to the first condenser lens 22, and wherein the imaging component comprises at least three lenses, the three lenses being an imaging lens 41, a focusing lens 42 and a wide-angle lens 43, respectively , each arranged one after the other in the projection direction of the film 51; it should be noted that the imaging lens 41 is configured to collect the effective light spots of the pattern passing through the film 51 to form a real image pattern and project it onto the focusing lens 42, the focusing lens 42 is configured to to readjust and correct the real image, and then project it onto the wide-angle lens 43, the wide-angle lens 43 is configured to magnify the adjusted real image pattern and then project it onto the light and shade bearing surface to on the light and shade bearing surface display clear magnified pattern effect, and with the arrangement of multiple lenses with different functions, the sharpness of the pattern projected by the projection device is effectively improved, thus improving the practicability of the projection device.

Furthermore, as in 2 until 6 shown, the projection device further comprises a first housing 10 and an audio component, wherein the light-emitting component is arranged in the first housing 10, and wherein the first housing 10 is provided with a first installation hole 11 in which the film component is detachably arranged, and wherein the Audio component a control board 31, an electronic tag 32 corresponding to the film 51, an identification module arranged on the control board 31 for identifying the electronic tag 32, a storage medium on which an audio corresponding to the galactic star sky pattern is pre-stored, and one electrically connected to the control board 31 Loudspeaker 33 comprises, and wherein the electronic label 32 is arranged on the film component, and wherein the control board 31, the storage medium and the loudspeaker 33 are arranged in the first housing 10. In the present embodiment, the first housing 10 is the shell of the projection device to protect other components of the projection device and to provide an installation position for other components of the projection device, and the first housing 10 is provided with a first installation hole 11 configured to install the film component becomes.

The audio component is used to identify the electronic tag 32 on the film 51 to automatically play audio corresponding to the galactic starry sky on the film 51, specifically, an electronic tag 32 is placed on the film 51, which is used to number the film 51 In particular, it can be an RFID tag, an IC induction tag, or a barcode tag, which is not limited here. When the film component is installed into the first installation hole 11, the identification module identifies the number on the electronic label 32, then generates an electrical signal and transmits it to the control board 31, in accordance with the electrical signal, the control board 31 positions a corresponding audio in the storage medium , which is then played through the speaker 33.

It should be noted that the first incoherent light source 21, the first condenser lens 22, the film 51 and the lens of the imaging component are each coaxially arranged to effectively reduce the loss of the light emitted from the first incoherent light source 21, in the way increases the brightness of the pattern projected by the projection device.

As in 2 until 6 As shown, the electronic tag 32 is also an RFID tag, with the identification module comprising an RFID chip. In the present embodiment, the electronic tag 32 is preferably an RFID tag, RFID is a radio frequency identification technology, and the RFID tag is waterproof, antimagnetic, high temperature resistant, durable, and has a long reading distance compared to IC induction or barcode Labels on, in addition, the identification module includes an RFID chip that is configured to capture the data on the RFID tag. As in 2 until 6 shown, the film component further comprises a second housing and a film carrier 53, wherein the film 51 is arranged on the film carrier 53, and the second housing is fixed in the first housing 10 according to the position of the first installation hole 11, and the film carrier 53 is inserted into the first installation hole 11 and protrudes into the second housing. In the present embodiment, the second housing is configured to provide a movable installation position for the film carrier 53, specifically, the second housing is fixed in the first housing 10 and arranged according to the position of the first installation hole 11, with the film carrier 53 being installed through the first installation hole 11 is movably inserted into the second housing, so that the user can replace the film 51 at any time in accordance with the usage scenario, thus the projection device is suitable for more scenarios, thereby effectively improving the practicability of the projection device.

It should be noted that when the film carrier 53 is inserted into the second housing, a light-transmitting hole is provided at a position of the second housing corresponding to the film 51 so that the light diffracted by the first condenser lens 22 is irradiated to the film 51 accurately can be. In addition, the control board 31 is fixed to the bottom of the second housing, so that the control board 31 can more effectively detect the electronic tag 32 on the film 51, thus achieving more accurate identification by the identification module.

As in 1 until 7 As shown, the film component further comprises a rotating plate 55 and a pressure plate 56, with a fixing groove 551 being provided on the rotating plate 55, and with the film 51 and the pressure plate 56 being fixed in the fixing groove 551, and with the rotating plate 55 and the pressure plate 56 are made of a transparent material, and an installation groove 531 is provided on the film carrier 53, and the rotating plate 55 is placed in the installation groove 531. In the present embodiment, the rotating plate 55 and the pressure plate 56 are configured to fix the film 51, specifically, the film 51 is placed in the fixing groove 551, the pressure plate 56 covers the film 51, the pressure plate 56 and the rotating are Plate 55 is encapsulated by a pressing process to isolate the contact of the film 51 with the air, thus preventing the oxidation of the pattern on the film 51, thereby effectively prolonging the life of the film 51.

The installation groove 531 is provided according to the position of the first condenser lens 22, with the rotating plate 55 placed in the installation groove 531, to effectively avoid installation error of the rotating plate 55, resulting in the film 51 of the projection of the first condenser lens not and thus the projection effect of the projection lamp is deteriorated, a light-transmitting hole is provided at a position of the installation groove 531 corresponding to the film 51, so that the light refracted by the first condenser lens 22 is irradiated to the film 51 accurately.

It is understood that the rotating plate 55 and the pressure plate 56 are made of a transparent material so that the light can pass through the rotating plate 55 and the pressure plate 56 to project the pattern on the film 51 to the outside.

In addition, a positioning pillar is arranged in the mounting groove 551, and a positioning hole is provided on the film 51 and the pressure plate 56 to fit with the positioning pillar to effectively improve the assembling efficiency of the film component.

Further, the electronic tag 32 is formed in a ring shape, with an annular groove 552 provided on the rotating plate 55, and the electronic tag 32 is placed in the annular groove 552, and the film 51 is located at the central part of the electronic tag 32. In the present embodiment, the identification module has an automatic detection area, and the electronic tag 32 is formed in a ring shape so that the electronic tag 32 is in the automatic detection area all the time during the rotation process to improve the stability of the automatic detection of the identification module. As in 2 until 6 As shown, the projection device further comprises a first drive component disposed in the installation housing, comprising a motor 61, a mounting plate 62 and a gear set, the mounting plate 62 being fixed in the first housing 10, and the motor 61 being fixed to the mounting plate 62 , and the side wall of the rotating plate 55 is formed in a tooth shape which meshes with the gear train, so that the motor 61 drives the rotating plate 55 to rotate through the gear train. In the present embodiment, the first drive component is configured to drive the rotating plate 55 to rotate so that the light effect of the galactic starry sky projected by the projection device is dynamic, which improves the variety of the light effect projected by the projection device. Specifically, the fixing plate 62 is arranged in the first housing 10 to fix the motor 61, a gear train is arranged on the motor 61, at the same time the side wall of the rotating plate 55 is formed in a tooth shape, through the gear train the motor 61 drives the rotating plate 55 to rotate to form a dynamic light effect.

Furthermore, the first drive component is arranged below the first incoherent light source 21, the first drive component further comprising a rotary shaft 66 having one end fixed to the mounting plate 62 and another end fixed to the second housing, the gear set comprising a drive gear 63 arranged on the motor shaft , a first gear 64 fitted on a rotating shaft 66 and meshing with the drive gear 63, and a second gear 65 fitted on the rotating shaft 66 and fixedly connected to the first gear 64, and the second gear 65 meshing with the rotating plate 55 is, and wherein the number of teeth of the second gear wheel 65 is smaller than the number of teeth of the first gear wheel 64. In the present embodiment, the first driving component can be arranged both on a peripheral side of the first incoherent light source 21 and below the first incoherent light source 21, preferably the first driving component is arranged below the first incoherent light source 21 in order to effectively use the space occupied by the projection device reduce and thus save space. The number of teeth of the second gear wheel 65 is smaller than the number of teeth of the first gear wheel 64, so that the second gear wheel 65 has a small gear ratio, at the same time the number of teeth of the rotating plate 55 is much larger than the number of teeth of the second gear wheel 65, so that the second Gear 65 drives the rotating plate 55 to rotate at a very low speed, in this way it more closely resembles the actual rotating effect of the starry sky, to effectively improve user-friendliness.

Further, the second housing comprises an upper housing 521 and a lower housing 522, wherein an avoidance groove 532 for avoiding the second gear 65 is provided on the film carrier 53 and the lower housing 522, and the rotating shaft 66 passing through the avoidance groove 532 on the upper housing 521 is fixed; and a restriction ring 54 corresponding to the annular groove 552 is disposed on the bottom wall of the installation groove 531 . In the present embodiment, the upper case 521 is buckled and connected to the lower case 522 to form an installation space for installing the film carrier 53, and an avoidance groove 532 is provided on the lower case 522 and the film carrier 53 to ensure effective engagement of the second gear wheel 65 with the rotating plate 55, and wherein the limit ring 54 mates with the annular groove 552 to prevent the rotating plate 55 from moving along the horizontal direction during the rotating process and thus the pattern projected by the projection device swaying as well thereby impairing the projection effect, thus effectively improving the practicability of the projection device.

As in 1 until 6 As shown, the imaging component further comprises a first sleeve 44, the imaging lens 41, the focusing lens 42 and the wide-angle lens 43 being arranged in the first sleeve 44; wherein a fastening projection 523 is arranged at the tip of the second housing, and wherein the first sleeve 44 is connected to the fastening projection 523 via threads, so that the first sleeve 44 moves with respect to the fastening projection 523 along the extending direction of the axis of the first sleeve 44 moved back and forth. In the present embodiment, the first sleeve 44 is configured to fix the imaging lens 41, the focusing lens 42 and the wide-angle lens 43 so that the imaging lens 41, the focusing lens 42 and the wide-angle lens 43 are on the same axis all the time to avoid that the relative positions of the imaging lens 41, the adjustment lens 42 or the wide-angle lens 43 change when the projection device is loaded with an external force, and thus the projection effect of the projection device is impaired, thus the structural stability of the projection device is effectively improved.

Further, a male thread is provided on the outer wall surface of the first sleeve 44, a female thread mating with the first sleeve 44 is provided on the inner wall surface of the attachment projection 523, and the first sleeve 44 is threadably connected to the attachment projection 523 so that the first sleeve 44 reciprocates clockwise or counterclockwise along the axial direction of the first sleeve 44 with respect to the fixing projection 523, it is understood that by adjusting the distance between the first sleeve and the film 51, the projected from the imaging component images are made clearer.

In addition, the imaging lens 41, the focusing lens 42 and the wide-angle lens 43 are aspherical lenses, and a first abutting protrusion is arranged on the side edge of the imaging lens 41, the focusing lens 42 and the wide-angle lens 43, and the height of the first abutting protrusion is larger than the thickness of the Central part of the respective lenses is to effectively prevent the respective lenses in the first sleeve 44 from having friction or shock and thus the projection effect of the projection device from being impaired.

At the bottom of the first sleeve 44 is further arranged an abutting member for abutting against the imaging lens 41, the abutting member being provided with a support projection, and the abutting member being fixed to and abutting against the first sleeve 44 and the supporting projection being in of the first sleeve 44 to support the imaging lens 41, thus the imaging lens 41 is prevented from slipping out of the first sleeve 44.

As in 1 until 6 shown, the light emitting component further includes a second condenser lens 23 mounted on another side of the first condenser lens 22 with respect to the first incoherent light source 21 is arranged. In the present embodiment, the first condenser lens 22 is configured to collect the light emitted from the first incoherent light source 21 to improve the light intensity, with the second condenser lens 23 on a different side of the first condenser lens 22 with respect to the first incoherent light source 21 is arranged to refract the light collected by the first condenser lens 22 and thus project it uniformly onto the film 51, avoiding the pattern on the film 51 being partially brightened due to different light intensities and thus the projection effect of the projection device is affected, thus di practicability of the projection device is effectively improved.

Further, the light emitting component further includes a second sleeve 24 fitted on the first incoherent light source 21, the first condenser lens 22 and the second condenser lens 23 are arranged in the second sleeve 24, at the same time the first condenser lens 22 and the second condenser lens 23 are each an aspheric A lens wherein a second abutting projection is disposed on the side edge of the first condenser lens 22 and the second condenser lens 23, and the height of the second abutting projection is larger than the thickness of the central part of the first condenser lens 22 and the second condenser lens 23.

Furthermore, the projection device further comprises a laser component comprising at least one coherent light source, at least one diffractive medium and a second drive component for driving the diffractive medium to rotate, the diffractive medium being arranged at the irradiated surface of the coherent light source. In the embodiment, the laser component is used to project another light effect, in particular, the diffraction medium is arranged on the irradiated surface of the coherent light source, after the light emitted from the coherent light source passed through the diffraction medium, a light effect is displayed on the light source supporting surface, reflecting the Star-like, at the same time, the second driving component drives the diffraction medium to rotate, so that the star-like light effect is presented as the dynamic moving light effect of the starry sky, thus effectively enhancing the diversity of the light effect.

As in 2 until 3 shown, the projection device further comprises a bracket 70, wherein the first housing 10 is rotatably connected to the bracket 70. In the present embodiment, the bracket 70 is used to support the first housing 10, and the first housing 10 is rotatably connected to the bracket 70 through a rotating component, so that the user can easily adjust the projection angle of the projection device, which improves the practicality of the projection device effectively improved.

The above content only represents optional embodiments of the present utility model, but the patent scope of the present utility model is not limited thereto. All equivalent structural transformations made within the inventive concept of the present utility model with the help of the description and figures of the present utility model or direct or indirect uses in other related technical fields should be considered as covered by the protection scope of the present utility model.

Claims (16)

A projection device for generating a light effect of the galactic starry sky, characterized in that it comprises: a light-emitting component comprising at least a first incoherent light source and at least a first condenser lens, the first condenser lens being arranged on an irradiated surface of the first incoherent light source; a film component comprising a film having a galactic starry sky pattern, the film being disposed on a different side of the first condenser lens with respect to the first incoherent light source; and an imaging component comprising at least three lenses, the three lenses being an imaging lens, a focusing lens, and a wide-angle lens, each of which is sequentially arranged in the projection direction of the film. Projection device for generating a light effect of the galactic starry sky claim 1 , characterized in that the projection device further comprises a first housing and an audio component, wherein the light-emitting component is arranged in the first housing, and wherein the first housing is provided with a first installation hole in which the film component is detachably arranged, and wherein the Audio component comprises a control board, an electronic label corresponding to the film, an identification module arranged on the control board for identifying the electronic label, a storage medium on which audio corresponding to the galactic starry sky pattern is pre-stored, and a speaker electrically connected to the control board, and wherein the electronic label is arranged on the film component, and wherein the control board, the storage medium and the speaker are arranged in the first housing. Projection device for generating a light effect of the galactic starry sky claim 2 , characterized in that the electronic tag is further an RFID tag, wherein the identification module comprises an RFID chip. Projection device for generating a light effect of the galactic starry sky claim 2 , characterized in that the film component comprises a second housing and a film carrier, the film being arranged on the film carrier, and the second housing being fixed in the first housing corresponding to the position of the first installation hole, and the film carrier being inserted into the first installation hole and protrudes into the second housing. Projection device for generating a light effect of the galactic starry sky claim 4 , characterized in that the control board is fixed to the bottom of the second housing. Projection device for generating a light effect of the galactic starry sky claim 5 , characterized in that the film component further comprises a rotating plate and a pressure plate, wherein a fixing groove is provided on the rotating plate, and wherein the film and the pressure plate are fixed in the fixing groove, and wherein the rotating plate and the pressure plate consist of one are made of transparent material, and an installation groove is provided on the film carrier, and the rotary plate is placed in the installation groove. Projection device for generating a light effect of the galactic starry sky claim 6 characterized in that the electronic tag is ring-shaped, an annular groove is provided on the rotating disk, and the electronic tag is placed in the annular groove, and the film is located at the central portion of the electronic tag. Projection device for generating a light effect of the galactic starry sky claim 7 , characterized in that the projection device further comprises a first drive component arranged in the first housing and comprising a motor, a mounting plate and a set of gears, and wherein the mounting plate is fixed in the first housing and the motor is fixed to the mounting plate, and wherein the side wall of the rotating plate is formed in a tooth shape, which meshes with the gear train, so that the motor drives the rotating plate to rotate through the gear train. Projection device for generating a light effect of the galactic starry sky claim 8 , characterized in that the first drive component is arranged below the first incoherent light source, the first drive component further comprising a rotary shaft having one end attached to the mounting plate and another end attached to the second housing, the gear set comprising a drive gear arranged on the motor shaft , a first gear mounted on a rotary shaft and meshing with the driving gear, and a second gear mounted on the rotary shaft and fixedly connected to the first gear, and wherein the second gear is meshed with the rotating plate, and wherein the number of teeth of the second gear wheel is smaller than the number of teeth of the first gear wheel. Projection device for generating a light effect of the galactic starry sky claim 9 characterized in that the second housing comprises an upper housing and a lower housing, an avoidance groove for avoiding the second gear is provided on the film carrier and the lower housing, and the rotating shaft is fixed to the upper housing through the avoidance groove; and a restriction ring corresponding to the annular groove is disposed on the bottom wall of the installation groove. Projection device for generating a light effect of the galactic starry sky claim 4 , characterized in that the imaging component comprises a first sleeve, the imaging lens, the focusing lens and the wide-angle lens being arranged in the first sleeve; wherein a mounting boss is disposed at the tip of the second housing, and wherein the first sleeve is threadedly connected to the mounting boss such that the first sleeve reciprocates with respect to the mounting boss along the extending direction of the axis of the first sleeve. Projection device for generating a light effect of the galactic starry sky claim 1 , characterized in that the light emitting component further comprises a second condenser lens arranged on another side of the first condenser lens is positioned with respect to the first incoherent light source. Projection device for generating a light effect of the galactic starry sky claim 12 , characterized in that the light emitting component further comprises a second sleeve arranged on the first incoherent light source, the first condenser lens and the second condenser lens being arranged in the second sleeve. Projection device for generating a light effect of the galactic starry sky claim 1 , characterized in that the first incoherent light source, the first condenser lens, the film and the imaging component are each arranged coaxially. Projection device for generating a light effect of the galactic starry sky claim 2 , characterized in that the electronic label is an NFC label, wherein the identification module comprises an NFC chip. Projection device for generating a light effect of the galactic starry sky claim 1 , characterized in that the projection device further comprises a laser component comprising at least one coherent light source, at least one diffractive medium and a second drive component for driving the diffractive medium to rotate, the diffractive medium being arranged on the irradiated surface of the coherent light source.

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