Projection lamp

Abstract

The utility model discloses a projection lamp, which comprises a shell, a light source module, a light source module and a light source module, the shell is internally provided with a mounting cavity, the top of the shell is provided with a mounting port communicated with the mounting cavity, and the bottom of the shell is provided with a lens; the optical module is installed in the installation cavity, and the lens is located on the light emitting side of the optical module; the lamp panel is mounted in the mounting cavity and is positioned on the light incident side of the optical module; the cover plate covers the mounting opening in a sealing manner; wherein the shell is provided with an insertion opening communicated with the installation cavity, the projection lamp further comprises a sealing plug, the sealing plug is inserted into the insertion opening in a sealed mode, the sealing plug is provided with a connector used for electrically connecting the lamp panel with the electric control module, and the insertion opening can form an extraction opening before being matched with the sealing plug in an inserted mode. After the projection lamp is assembled, the socket is used for forming the extraction opening to extract gas such as water vapor in the mounting cavity, then the socket is sealed through the sealing plug, the gas such as external water vapor is prevented from entering the mounting cavity, the connector is arranged on the sealing plug, and power supply and control over the projection lamp are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, and in particular to a projection lamp. Background Art

[0002] The principle of a projection lamp is that light rays projected by a light source (such as an LED lamp) arranged on a circuit board form a projection pattern after passing through an optical module formed by a lens assembly and are projected onto a projection surface, so that the projection pattern can be used for decoration or lighting. For example, an automotive projection lamp is a lamp used to illuminate the ground around the vehicle when the vehicle owner has not entered the vehicle. Its function is to facilitate the vehicle owner to observe the environment around the vehicle, and it can be installed at the bottom of the outside rearview mirror of the vehicle or at the bottom of the vehicle door, etc. However, in the existing projection lamp, the circuit board, the light source, and the optical module are encapsulated inside the housing. As time goes by, water vapor inside the housing will gradually accumulate and condense into water on the circuit board, which easily causes poor contact of the circuit board. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a projection lamp to solve the technical problem that as time goes by, water vapor inside the housing of the existing projection lamp will accumulate and condense into water on the circuit board, which easily causes poor contact of the circuit board.

[0004] The above purpose of the utility model can be achieved by the following technical solutions:

[0005] The utility model provides a projection lamp, comprising: a housing with an installation cavity inside, and an installation opening communicating with the installation cavity is arranged at the top of the housing, and a lens is installed at the bottom of the housing; an optical module installed in the installation cavity, and the lens is located on the light-emitting side of the optical module; a lamp board installed in the installation cavity and located on the light-incident side of the optical module; a cover plate hermetically covering the installation opening; wherein, a socket communicating with the installation cavity is arranged on the housing, the projection lamp further comprises a sealing plug hermetically inserted into the socket, a connector for electrically connecting the lamp board with an electronic control module is arranged on the sealing plug, and an air extraction port can be formed at the socket before being inserted and matched with the sealing plug.

[0006] In an embodiment of the utility model, a plurality of sealing convex rings are arranged on the sealing plug along its circumferential direction, and the plurality of sealing convex rings are arranged at intervals along the axial direction of the sealing plug.

[0007] In an embodiment of the utility model, sealing grooves matched with the plurality of sealing convex rings are arranged on the inner wall surface of the socket.

[0008] In an embodiment of the utility model, the cover plate is hermetically covered at the installation opening by ultrasonic welding.

[0009] In an embodiment of the present utility model, an installation boss is provided on the inner side surface of the cover plate, an installation groove communicating with the installation opening is provided on the top surface of the housing, the installation boss is welded in the installation groove, and the edge portion of the inner side surface of the cover plate is welded and fitted with the edge portion of the top surface of the housing.

[0010] In an embodiment of the present utility model, a limiting boss is provided on the inner side surface of the cover plate, the top surface of the lamp board abuts and cooperates with the limiting boss, the bottom surface of the lamp board abuts and cooperates with the optical module, and the cover plate can adapt to the optical modules of different lengths by changing the height of the limiting boss.

[0011] In an embodiment of the present utility model, a lens mounting seat is provided at the bottom of the housing, and the lens is mounted on the lens mounting seat.

[0012] In an embodiment of the present utility model, a plurality of adjusting grooves are provided on the outer wall surface of the lens mounting seat along its axial direction, a plurality of adjusting protrusions are provided on the top of the lens along its axial direction, the position of the lens is matched with that of the optical module by adjusting the length of the plurality of adjusting protrusions inserted into the plurality of adjusting grooves along the axial direction of the lens, and after the plurality of adjusting protrusions are adjusted in place, they are welded and connected to the inner wall surfaces of the plurality of adjusting grooves.

[0013] The features and advantages of the present utility model are as follows:

[0014] For the projection lamp of the present utility model, by providing a socket communicating with the installation cavity on the housing and a sealing plug capable of being hermetically inserted and fitted with the socket, after the assembly is completed, the water vapor and other gases in the installation cavity can be pumped out by using the socket as an air extraction port first, so as to avoid the accumulation of water vapor inside on the lamp board during subsequent use, which may cause poor contact of the lamp board. Then, the socket is sealed by the sealing plug to prevent external water vapor and other gases from entering the installation cavity and causing poor contact of the lamp board. And by providing a connector on the sealing plug to electrically connect the lamp board with the electronic control module, the power supply and control of the projection lamp are realized by using the electronic control module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is an exploded view of the projection lamp in the present utility model before assembling the sealing plug.

[0017] Figure 2This is a schematic structural diagram of the projection lamp in the present utility model before assembling the sealing plug.

[0018] Figure 3 This is a schematic structural diagram of the projection lamp in the present utility model after assembling the sealing plug.

[0019] Figure 4 This is a schematic structural diagram of the sealing plug in the present utility model.

[0020] Figure 5 This is a schematic structural diagram of the socket in the present utility model.

[0021] Figure 6 This is a schematic inner structure diagram of the cover plate in the present utility model.

[0022] In the figure:

[0023] 1. Housing; 11. Installation opening; 12. Socket; 121. Sealing groove; 13. Lens mounting seat; 131. Adjusting groove; 14. Installation groove; 15. Edge part of the top surface

[0024] 2. Optical module; 21. Gasket

[0025] 3. Lamp board; 31. Electrical connector

[0026] 4. Cover plate; 41. Installation boss; 42. Limiting boss; 421. Square convex ring; 422. Circular convex ring; 423. Connecting rib; 43. Edge part of the inner side

[0027] 5. Lens; 51. Adjusting protrusion

[0028] 6. Sealing plug; 61. Connector; 611. Input end; 612. Output end; 62. Sealing convex ring Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] As Figures 1 to 4As shown in the figure, the present utility model provides a projection lamp, comprising: a housing 1, which has an installation cavity inside, and an installation opening 11 communicating with the installation cavity is provided at the top of the housing 1, and a lens 5 is installed at the bottom of the housing 1; an optical module 2, installed in the installation cavity, and the lens 5 is located on the light-emitting side of the optical module 2; a lamp board 3, installed in the installation cavity and located on the light-incident side of the optical module 2; a cover plate 4, hermetically covering the installation opening 11; wherein, a socket 12 communicating with the installation cavity is provided on the housing 1, and the projection lamp further comprises a sealing plug 6, the sealing plug 6 is hermetically inserted into the socket 12, and the sealing plug 6 is provided with a connector 61 for electrically connecting the lamp board 3 with an electronic control module, and the socket 12 can form an air extraction port before being inserted and matched with the sealing plug 6.

[0031] For the projection lamp of the present utility model, by providing a socket 12 communicating with the installation cavity on the housing 1 and a sealing plug 6 that can be hermetically inserted and matched with the socket 12, after the assembly is completed, the air extraction port can be first formed by the socket 12 to extract gases such as water vapor in the installation cavity, avoiding the accumulation of water vapor inside on the lamp board 3 during subsequent use and causing poor contact of the lamp board 3. Furthermore, the socket 12 is sealed by the sealing plug 6 to prevent external gas molecules such as water vapor from entering the installation cavity and causing poor contact of the lamp board 3. And by providing a connector 61 on the sealing plug 6 to electrically connect the lamp board 3 with the electronic control module, the power supply and control of the projection lamp are realized by using the electronic control module.

[0032] Combined with Figures 1 to 4 As shown in the figure, the installation process of the projection lamp of the present utility model is as follows: first, the optical template is installed in the installation cavity from the installation opening 11, then the lamp board 3 is installed in the installation cavity from the installation opening 11, and then the cover plate 4 is hermetically covered on the installation opening 11. Then, the socket 12 is used as an air extraction port to be connected with a vacuum pumping device or other air extraction devices, and after the gas in the installation cavity is extracted, the sealing plug 6 is immediately inserted into the socket 12 and the output end 612 of the connector 61 extending into the installation cavity is electrically connected with the lamp board 3. During use, the input end 611 of the connector 61 located outside the housing 1 is electrically connected with the electronic control module, so as to supply power to the lamp board 3 by using the electronic control module and control the turning on and off of the lamp board 3, realizing the control of the projection lamp. Among them, the projection lamp includes but is not limited to being installed on an automobile, and the electronic control module includes but is not limited to the electronic control module on an automobile.

[0033] Specifically, as Figure 1 shown in the figure, the lamp board 3 includes a circuit board and light sources (such as the LED lamp in this embodiment) installed on the circuit board, and the positions of the light sources correspond to the positions of the optical module 2; an electrical interface or electrical connector 31 electrically connected to the output end 612 of the connector 61 is provided on the circuit board, and the position of the electrical interface or electrical connector 31 corresponds to the position of the socket 12. A lens assembly is provided inside the optical module 2. The more specific structures of the lamp board 3 and the optical module 2 are the same as those in the prior art and will not be elaborated here. As Figure 4As shown, the sealing plug 6 is injection-molded, and the connector 61 is implanted into the sealing plug 6 during the injection molding process of the sealing plug 6. This manufacturing method is simple and can ensure the bonding strength and sealing performance between the connector 61 and the sealing plug 6.

[0034] As Figure 4 shown, in the embodiment of the present utility model, a plurality of sealing convex rings 62 are provided on the sealing plug 6 along its circumferential direction, and the plurality of sealing convex rings 62 are arranged at intervals along the axial direction of the sealing plug 6. By providing the plurality of sealing convex rings 62, the sealing plug 6 can be inserted and fitted with the socket 12 more tightly, which is beneficial to improving the sealing effect between the sealing plug 6 and the socket 12. As Figure 5 shown, in order to further improve the sealing effect, sealing grooves 121 that cooperate with the plurality of sealing convex rings 62 are provided on the inner wall surface of the socket 12.

[0035] As Figure 1 and Figure 2 shown, in the embodiment of the present utility model, the cover plate 4 is hermetically closed at the installation opening 11 by ultrasonic welding. The ultrasonic welding method is used to seal the cover plate 4, so that there is no need to additionally provide a sealing member between the cover plate 4 and the housing 1, which ensures the sealing effect at the connection between the cover plate 4 and the housing 1, and the structure is simple and compact, reducing the number of components and being easy to assemble. Specifically, in combination with Figure 1 and Figure 6 shown, an installation boss 41 is provided on the inner side surface of the cover plate 4, and an installation groove 14 communicating with the installation opening 11 is provided on the top surface of the housing 1. The installation boss 41 is welded in the installation groove 14, that is, the surface of the installation boss 41 is welded and fitted with the inner wall surface of the installation groove 14, and the edge portion 43 of the inner side surface of the cover plate 4 is welded and fitted with the edge portion 15 of the top surface of the housing 1.

[0036] In combination with Figure 1 and Figure 6 shown, in the embodiment of the present utility model, a limiting boss 42 is provided on the inner side surface of the cover plate 4. The top surface of the lamp board 3 abuts and cooperates with the limiting boss 42, and the bottom surface of the lamp board 3 abuts and cooperates with the optical module 2. The cover plate 4 can adapt to the optical module 2 of different lengths by changing the height of the limiting boss 42. The housing 1 is matched with the cover plate 4 provided with limiting bosses 42 of different heights, and without configuring housings 1 of different heights, it can be matched with the optical module 2 of different lengths, so that the top end of the optical module 2 abuts and is limited with the bottom surface of the lamp board 3, and the top surface of the lamp board 3 abuts and is limited with the limiting boss 42, thereby ensuring the installation stability of the optical module 2 and the lamp board 3. For example, the longer the length of the optical module 2, the lower the height of the limiting boss 42 configured on the cover plate 4; on the contrary, the shorter the length of the optical module 2, the higher the height of the limiting boss 42 configured on the cover plate 4.

[0037] Specifically, the shape of the limit boss 42 is not specifically limited. For example, Figure 6 As shown, in this embodiment, the limit boss 42 includes a square convex ring 421, a circular convex ring 422, and a plurality of connecting ribs 423. The circular convex ring 422 is located inside the square convex ring 421 and is connected to the square convex ring 421 through a plurality of connecting ribs 423.

[0038] For example, Figure 1 and Figure 2 As shown, in the embodiment of the present utility model, a lens mounting seat 13 is provided at the bottom of the housing 1, and the lens 5 is mounted on the lens mounting seat 13. Specifically, a plurality of adjusting grooves 131 are provided on the outer wall surface of the lens mounting seat 13 along its axial direction, and a plurality of adjusting protrusions 51 are provided on the top of the lens 5 along its axial direction. The lens 5 makes the position of the lens 5 match that of the optical module 2 by adjusting the length of the plurality of adjusting protrusions 51 inserted into the plurality of adjusting grooves 131 along its axial direction, and after the plurality of adjusting protrusions 51 are adjusted in place, they are welded to the inner wall surfaces of the plurality of adjusting grooves 131. Therefore, lenses 5 of different lengths can be welded and fixed to the lens mounting seat 13 by adjusting the length inserted into the plurality of adjusting grooves 131 along the axial direction and then adjusting in place, so that the lens mounting seat 13 of the housing 1 can match lenses 5 of different lengths. Specifically, the bottom end of the optical module 2 is inserted into the lens mounting seat 13, and the bottom end of the optical module 2 is sleeved with a washer 21, and the washer 21 abuts against the inner bottom surface of the lens mounting seat 13.

[0039] The above are only several embodiments of the present utility model. Those skilled in the art can make various changes or modifications to the embodiments of the present utility model without departing from the spirit and scope of the present utility model according to the content disclosed in the application documents.

Claims

1. A projection lamp, characterized in that: include: A housing, wherein a mounting cavity is provided inside the housing, a mounting opening communicating with the mounting cavity is provided on the top of the housing, and a lens is installed on the bottom of the housing; An optical module is installed in the installation cavity, and the lens is located at the light-emitting side of the optical module; A light board, installed in the installation cavity and located on the light incident side of the optical module; A cover plate, sealingly covering the installation opening; Among them, the shell is provided with a socket connected to the installation cavity, and the projection lamp also includes a sealing plug, which is sealed and inserted in the socket. The sealing plug is provided with a connector for electrically connecting the lamp board with the electronic control module, and the socket can form an exhaust port before being plugged into the sealing plug.

2. The projection lamp according to claim 1, wherein: The sealing plug is provided with a plurality of sealing convex rings along its circumference, and the plurality of sealing convex rings are arranged at intervals along the axial direction of the sealing plug.

3. The projection lamp according to claim 2, wherein: A sealing groove matched with the plurality of sealing convex rings is provided on the inner wall surface of the socket.

4. The projection lamp according to claim 1, wherein: The cover plate is sealed and covered on the installation opening by ultrasonic welding.

5. The projection lamp according to claim 4, characterized in that: The inner side surface of the cover plate is provided with a mounting boss, the top surface of the shell is provided with a mounting groove connected to the mounting port, the mounting boss is welded in the mounting groove, and the edge portion of the inner side surface of the cover plate is welded and fitted with the edge portion of the top surface of the shell.

6. The projection lamp according to claim 1, wherein: The inner side surface of the cover plate is provided with a limiting boss, the top surface of the lamp board abuts against the limiting boss, and the bottom surface of the lamp board abuts against the optical module. The cover plate can adapt to the optical modules of different lengths by changing the height of the limiting boss.

7. The projection lamp according to claim 1, wherein: A lens mounting seat is provided at the bottom of the shell, and the lens is mounted on the lens mounting seat.

8. The projection lamp according to claim 7, wherein: The outer wall surface of the lens mounting seat is provided with a plurality of adjustment grooves along its axial direction, and the top of the lens is provided with a plurality of adjustment protrusions along its axial direction. The lens is matched with the position of the optical module by adjusting the length of the plurality of adjustment protrusions inserted into the plurality of adjustment grooves along its axial direction, and the plurality of adjustment protrusions are welded and connected to the inner wall surfaces of the plurality of adjustment grooves after being adjusted into place.

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