CN216383705U - Projection mechanism capable of replacing projection film and projection flashlight - Google Patents

Abstract

The utility model belongs to the field of lighting, in particular to a projection mechanism capable of replacing projection sheets and a projection flashlight. It includes a lamp holder shell, and an accommodating space is formed. The accommodating space is provided with a projection sheet and a sliding groove. The open end of the sliding groove is located on the side wall of the lamp head casing. The projection sheet can enter the sliding groove from the side wall of the lamp head casing and be installed in the accommodation space. Inside; a rotating ring set close to the projection sheet, the rotating ring is provided with a toothed portion, the end of the projection sheet close to the toothed portion is provided with a rack, and a gear is arranged between the toothed portion and the rack. When the rotating ring is rotated, the gear is in Driven by the teeth, it rotates to make the projection sheet slide in the sliding groove; the two ends of the projection sheet are respectively provided with a light source and a convex lens, and the light emitted by the light source passes through the projection sheet and the convex lens and forms a projection outside. The utility model can realize that the projection sheet can be installed in the lamp holder housing by rotating the rotating ring without disassembling the head of the projection flashlight, the projection sheet is not easy to fall off, and the replacement is convenient.

Description

A projection mechanism and a projection flashlight with a replaceable projection film

technical field

The utility model belongs to the field of lighting, in particular to a projection mechanism capable of replacing projection sheets and a projection flashlight.

Background technique

Projection flashlight is a kind of flashlight that can project the pattern or text on the projection film onto the wall or the screen plane. It is suitable for advertising, family atmosphere lighting, helping children to recognize things, promoting children's intellectual development, etc. Common projection flashlights on the market , Generally, a disc-type projection film is used, and the projection switching is realized by rotating the projection film. The projection film needs to protrude a part to the outside of the lamp holder shell, which is easy to fall off; some projection flashlights set the projection film in the lamp head case. The projection film needs to be removed from the head of the projection flashlight, which is extremely inconvenient.

Therefore, there is an urgent need for a projection mechanism and a projection flashlight that can replace the projection sheet.

SUMMARY OF THE INVENTION

The purpose of this utility model is to aim at the deficiencies of the prior art, to provide a projection mechanism and a projection flashlight that can replace the projection sheet, which can realize the installation of the projection sheet to the lamp housing by rotating the rotating ring without disassembling the head of the projection flashlight. In the body, it is not easy to fall off, and it is easy to replace.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A projection mechanism capable of replacing projection sheets, comprising:

A lamp holder housing, the lamp holder housing is formed with an accommodating space, and the accommodating space is provided with a projection sheet and a sliding slot for the projection sheet to slide, and the open end of the sliding slot is located on the side wall of the lamp holder housing, The projection sheet can enter the sliding groove from the side wall of the lamp holder housing and be installed in the accommodating space;

A rotating ring arranged close to the projection plate, a toothed portion is arranged in the rotating ring, a rack is arranged at one end of the projection plate close to the toothed portion, and a mutual connection is arranged between the toothed portion and the rack. The engaged gear, when the rotating ring is rotated, the gear rotates under the driving of the tooth portion, so that the projection sheet slides in the sliding groove;

Both ends of the projection sheet are further provided with a light source and a convex lens, respectively, and the light emitted by the light source can pass through the projection sheet and the convex lens and form a projection on the outside of the lamp holder housing.

Further, the projection sheet includes a support and a light-transmitting sheet mounted on the support, the rack is located on the support, and the light emitted by the light source can pass through the light-transmitting sheet to form a projection.

Further, the bracket is provided with a through hole, and the light-transmitting sheet is optionally attached to the through hole.

Further, the bracket is provided with a plurality of the through holes, and when the rotating ring is rotated, the projection sheet slides in the sliding groove, so that the light emitted by the light source can selectively pass through all the holes. the through hole.

Further, there are three through holes in total, and the arrangement direction is parallel to the moving direction of the projection sheet.

Further, the accommodating space is further provided with a positioning member, and the bracket is further provided with a positioning groove matched with the positioning member. When the bracket moves to the position corresponding to the through hole and the light source, The positioning member falls into the positioning groove and plays a relatively fixed role.

Preferably, the positioning member includes a spring and a pin.

Preferably, the light-transmitting sheet is one or more of a film, a transparent light-transmitting sheet, and a colored light-transmitting sheet.

Preferably, both ends of the sliding slot penetrate through the side wall of the lamp holder housing, so that the projection sheet can be loaded into or taken out from any open end of the sliding slot.

The utility model also provides a projection flashlight, which includes a barrel body and a projection mechanism for replacing projection films, wherein the barrel body is equipped with a power supply and a switch that is electrically connected to the light source, and the barrel body is connected to the light source. connected to the lamp holder shell.

The beneficial effects of the present utility model:

In the utility model, the toothed part of the rotating ring, the gear and the rack of the projection sheet are engaged with each other, and the projection sheet can be installed in or taken out from the lamp holder housing by rotating the rotating ring. When the projection sheet is installed in the lamp holder casing After that, the light emitted by the light source can pass through the projection sheet and the convex lens and form a projection on the outside of the lamp holder housing; by setting a plurality of through holes and light-transmitting sheets on the bracket, when the rotating ring is rotated, the corresponding channel of the light source can be switched. By setting the positioning piece in the accommodating space and setting the positioning slot on the bracket, the bracket can play a positioning role when moving in the sliding slot; by setting the sliding slot at both ends of the lamp body shell The opening allows the projection sheet to be loaded into or taken out from any open end; the utility model can realize that the projection sheet can be installed into the lamp holder housing by rotating the rotating ring without disassembling the head of the projection flashlight, and the projection sheet is not easy to fall off and can be replaced. It is convenient, and can also enhance children's hands-on ability when used as a children's toy.

Description of drawings

Accompanying drawing 1 is the exploded structure schematic diagram of projection flashlight of the present utility model;

Accompanying drawing 2 is the structure schematic diagram of the rotation ring, gear and projection sheet of the present invention that cooperate with each other;

3 is a schematic structural diagram of the projection mechanism of the replaceable projection sheet of the present invention;

4 is a cross-sectional view of the projection mechanism of the replaceable projection sheet of the present invention;

Accompanying drawing 5 is the exploded structure schematic diagram of the projection sheet of the present utility model;

Accompanying drawing 6 is the exploded structure schematic diagram of the positioning member of the present utility model;

Identification in the figure: 1-lamp housing, 110-accommodating space, 120-sliding groove, 130-notch; 2-projection plate, 210-bracket, 211-rack, 212-through hole, 213-positioning slot, 220- Translucent sheet; 3-rotating ring, 310-tooth; 4-gear; 5-light source; 6-convex lens; 7-positioning piece, 710-spring, 720-pin; 8-cylinder, 810-power supply, 820- switch.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description , rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the embodiments of the present utility model, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense, for example, it may be a fixed connection or a Removable connection, or integrated; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Referring to Fig. 1 to Fig. 6, there are shown a specific embodiment of a projection mechanism and a projection flashlight for a replaceable projection sheet provided by the present invention.

Referring to Figure 2 and Figure 3, the projection mechanism of the replaceable projection sheet includes:

The lamp holder housing 1, the lamp holder housing 1 is formed with an accommodating space 110, and the accommodating space 110 is provided with a projection sheet 2 and a sliding slot 120 for the projection sheet 2 to slide. The sheet 2 can enter the sliding groove 120 from the side wall of the lamp holder housing 1 and be installed in the accommodating space 110;

The rotating ring 3 is arranged close to the projection sheet 2, the rotating ring 3 is provided with a tooth portion 310, the end of the projection sheet 2 close to the tooth portion 310 is provided with a rack 211, and the tooth portion 310 and the rack 211 are provided with mutually engaging gears 4. When the rotating ring 3 is rotated, the gear 4 is rotated under the driving of the tooth portion 310, so that the projection sheet 2 slides in the sliding groove 120;

Referring to FIG. 1 , in the above embodiment, the two ends of the projection sheet 2 are also provided with a light source 5 and a convex lens 6 respectively, and the light emitted by the light source 5 can pass through the projection sheet 2 and the convex lens 6 and be formed on the outside of the lamp holder housing 1 projection.

Referring to FIG. 4 , in the above embodiment, the side surface of the lamp holder housing 1 is provided with the open end of the sliding groove 120 . When in use, the projection sheet 2 is loaded from the open end of the sliding groove 120 along the sliding direction of the sliding groove 120 . Install the projection sheet 2 into the sliding slot 120. During the installation process, the rack 211 of the projection sheet 2 contacts the gear 4 and engages. Since the gear 4 and the teeth 310 of the rotating ring 3 are in an engaged state, the rotating ring 3 can be rotated by rotating the rotating ring 3. Put the projection film 2 into the lamp holder housing 1; when the projection film 2 needs to be taken out, rotate the rotating ring 3, the tooth part 310 of the rotating ring 3 rotates along with it, the gear 4 rotates along with it, and pushes the rack 211 engaged with the gear 4 The projection sheet 2 is moved out of the sliding groove 120; when projection is required, the projection sheet 2 is installed in the lamp holder housing 1, and the light emitted by the light source 5 can pass through the projection sheet 2 and the convex lens 6, and is in the lamp holder housing. A projection is formed on the wall or screen plane outside the body 1; in the embodiment, the rotating ring 3 is sleeved on the lamp holder housing 1, and the lamp holder housing 1 is provided with a gap 130 near the tooth portion 310. The tooth portion 310 of the rotating ring 3 The notch 130 is connected with the rack 211 of the projection sheet 2 located in the head housing 1 through the gear 4; in some embodiments, the rotating ring 3 can also be installed in the lamp housing 1 and protrude a part from the head housing In the above embodiment, the tooth 310 of the rotating ring 3 is a part of the internal gear, the light source 5 is an LED light source, Between the light source 5 and the projection sheet 2 is also provided a reflective bowl for increasing the luminous flux.

In the above embodiment, both ends of the sliding slot 120 penetrate through the side wall of the lamp holder housing 1 , so that the projection sheet 2 can be loaded into or taken out from any open end of the sliding slot 120 .

Referring to FIG. 5 , in the above embodiment, the projection sheet 2 includes a bracket 210 and a light-transmitting sheet 220 mounted on the bracket 210 , the rack 211 is located on the bracket 210 , and the light emitted by the light source 5 can pass through the light-transmitting sheet 220 To form a projection, in an embodiment, one or more light-transmitting sheets 220 may be provided on the bracket 210, and the light-transmitting sheets 220 are one or more of a film, a transparent light-transmitting sheet, and a colored light-transmitting sheet.

In the above-mentioned embodiment, the bracket 210 is provided with a through hole 212, and the light-transmitting sheet 220 is optionally attached to the through hole 212. The bracket 210 is provided with a plurality of through holes 212. When the rotating ring 3 is rotated, the projection sheet 2 Sliding in the sliding groove 120, the light emitted by the light source 5 can selectively pass through the through hole 212. In the embodiment, the projection sheet 2 can be installed into the lamp holder housing 1 by rotating the rotating ring 3. When the projection sheet 2 When it is located in the lamp holder housing 1, the relative position between the light source 5 and the different through holes 212 can be switched by continuing to rotate the rotating ring 3, so that the light source 5 and the different through holes 212 correspond to each other, so as to realize the rotation of the rotating ring. 3. The effect of switching the projection screen. In this embodiment, there are 3 through holes 212 in total, and the arrangement direction is parallel to the moving direction of the projection sheet 2. There are 3 different films on the same projection sheet 2, so as to realize 3 different films. Switching between projection screens; common projection flashlights on the market generally use a disc-type projection sheet 2, which occupies a large area of film. The bracket 210 of the projection sheet 2 in this embodiment is rectangular, and the light-transmitting sheet 220 is also Rectangular, reducing the area of the transparencies and reducing the cost.

Referring to FIG. 6 , in the above embodiment, the accommodating space 110 is further provided with a positioning member 7 , and the bracket 210 is further provided with a positioning groove 213 matched with the positioning member 7 . When the bracket 210 moves to the through hole 212 and the light source 5 Correspondingly, the positioning member 7 falls into the positioning groove 213 to play a relatively fixed role, wherein the positioning member 7 includes a spring 710 and a pin 720. When the rotating ring 3 is rotated, the tooth portion 310 drives the gear 4, and the gear 4 drives the teeth. The bar 211 moves the bracket 210 of the projection sheet 2, and the bracket 210 is provided with one or more through holes 212. When the bracket 210 is moved to the through hole 212 corresponding to the light source 5, the positioning slot 213 on the bracket 210 moves accordingly When it reaches the position corresponding to the positioning member 7, under the action of the spring 710, a part of the pin 720 is squeezed into the positioning groove 213, so as to realize positioning and relative fixation and provide operation feedback.

Referring to FIG. 1 , the present embodiment also provides a projection flashlight, which includes a barrel body 8 and the above-mentioned projection mechanism that can replace the projection film. The barrel body 8 is equipped with a power supply 810 and a switch 820 that are electrically connected to the light source 5 . 8 is connected to the lamp holder housing 1, and the light source 5 can be turned on, off or brightness, etc., can be controlled by the switch 820.

To sum up, the present embodiment provides a projection mechanism and a projection flashlight that can replace the projection sheet. 3. Install the projection sheet 2 into the lamp holder housing 1 or take it out from the lamp holder housing 1. When the projection sheet 2 is installed in the lamp holder housing 1, the light emitted by the light source 5 can pass through the projection sheet 2 and the convex lens 6. A projection is formed on the outside of the lamp head housing 1; by setting a plurality of through holes 212 and a light-transmitting sheet 220 on the bracket 210, the through holes 212 corresponding to the light source 5 can be switched when the rotating ring 3 is rotated, so as to realize the switching of the projection screen. ; By setting the positioning member 7 in the accommodating space 110 and setting the positioning groove 213 on the bracket 210, the bracket 210 can play a positioning role when moving in the sliding groove 120; 120 opening, so that the projection sheet 2 can be loaded or taken out from any open end; this embodiment can realize that the projection sheet 2 can be installed in the lamp holder housing 1 by rotating the rotating ring 3 without disassembling the projection flashlight head. , the projection sheet 2 is not easy to fall off, the replacement is convenient, and when used as a children's toy, it can also enhance the children's hands-on ability.

The above-mentioned embodiment is only one of the preferred specific modes of the present invention, and the usual changes and substitutions performed by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. a projection mechanism of a replaceable projection film, is characterized in that, comprises: A lamp holder housing (1), the lamp holder housing (1) is formed with an accommodating space (110), and the accommodating space (110) is provided with a projection sheet (2) and a slide for the projection sheet (2) to slide a slot (120), the open end of the sliding slot (120) is located on the side wall of the lamp holder housing (1), and the projection sheet (2) can enter the slide from the side wall of the lamp holder housing (1) a groove (120) and installed into the accommodating space (110); A rotating ring (3) disposed close to the projection sheet (2), a tooth portion (310) is arranged in the rotating ring (3), and an end of the projection sheet (2) close to the tooth portion (310) is provided with a tooth portion (310). There is a rack (211), and a gear (4) that meshes with each other is provided between the tooth portion (310) and the rack (211). When the rotating ring (3) is rotated, the gear (4) 4) Rotate under the driving of the tooth portion (310), so that the projection sheet (2) slides in the sliding groove (120); Both ends of the projection sheet (2) are further provided with a light source (5) and a convex lens (6), respectively, and the light emitted by the light source (5) can pass through the projection sheet (2) and the convex lens (6) And a projection is formed on the outside of the lamp holder housing (1). 2. A projection mechanism for replacing projection sheets according to claim 1, wherein the projection sheet (2) comprises a bracket (210) and a light-transmitting sheet (210) mounted on the bracket (210). 220), the rack (211) is located on the bracket (210), and the light emitted by the light source (5) can pass through the light-transmitting sheet (220) to form a projection. 3. A projection mechanism for a replaceable projection sheet according to claim 2, wherein the bracket (210) is provided with a through hole (212), and the light-transmitting sheet (220) is optionally attached to attached to the through hole (212). 4. A projection mechanism for replaceable projection sheets according to claim 3, characterized in that, the bracket (210) is provided with a plurality of the through holes (212), when the rotating ring (3) is rotated When the projection sheet (2) slides in the sliding groove (120), the light emitted by the light source (5) can selectively pass through the through hole (212). 5 . The projection mechanism for replacing projection sheets according to claim 4 , wherein there are three through holes ( 212 ) in total, and the arrangement direction is parallel to the moving direction of the projection sheets ( 2 ). 6 . 6 . The projection mechanism for replacing projection sheets according to claim 3 , wherein a positioning member ( 7 ) is further provided in the accommodating space ( 110 ), and a positioning member ( 7 ) is further provided on the bracket ( 210 ). 7 . The positioning groove (213) matched with the positioning member (7), when the bracket (210) moves to the position where the through hole (212) corresponds to the light source (5), the positioning member (7) ) falls into the positioning groove (213) to play a relative fixing role. 7 . The projection mechanism for replacing projection sheets according to claim 6 , wherein the positioning member ( 7 ) comprises a spring ( 710 ) and a pin ( 720 ). 8 . 8. The projection mechanism for a replaceable projection sheet according to any one of claims 2-7, wherein the light-transmitting sheet (220) is one of a film, a transparent light-transmitting sheet, and a colored light-transmitting sheet. one or more. 9 . The projection mechanism for a replaceable projection sheet according to claim 1 , wherein both ends of the sliding groove ( 120 ) penetrate through the side wall of the lamp holder housing ( 1 ), so that the projection The sheet (2) can be loaded into or taken out from any open end of the sliding groove (120). 10. A projection flashlight, characterized in that it comprises a barrel body (8) and a projection mechanism for a replaceable projection sheet according to any one of claims 1-9, wherein the barrel body (8) is equipped with a The light source (5) is electrically connected to a power supply (810) and a switch (820), and the barrel (8) is connected to the lamp cap housing (1).

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