CN216521232U

CN216521232U - Light projection lamp adopting linear temperature control scheme

Info

Publication number: CN216521232U
Application number: CN202220217253.4U
Authority: CN
Inventors: 王秋艳
Original assignee: Shandong Komee Optoelectronic Technology Co ltd
Current assignee: Shandong Komee Optoelectronic Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-05-13
Anticipated expiration: 2032-01-26

Abstract

The utility model relates to the technical field of LED illumination, in particular to a light projection lamp adopting a linear temperature control scheme. The LED light source comprises a shell and an LED substrate arranged in the shell, wherein a support is arranged on the shell, the shell comprises a shell bottom plate and a side surrounding plate which is arranged around the shell bottom plate and is of an annular structure, a metal heat conducting sheet is attached to the inner wall of the shell bottom plate, the back surface of the LED substrate is closely attached to the metal heat conducting sheet, a panel is buckled on the shell, a panel window for containing the LED substrate is arranged on the panel, and the outer contour of the panel is connected with the edge of the side surrounding plate of the shell. The light projecting lamp has compact and reasonable structure and is convenient to assemble and produce; the composite heat dissipation material is tightly attached, the contact area is large, the heat conduction efficiency is high, the heat dissipation effect is guaranteed, meanwhile, the insulation performance is good, the electric shock danger is thoroughly avoided, and the use is safe and reliable.

Description

Light projection lamp adopting linear temperature control scheme

Technical Field

The utility model relates to the technical field of LED illumination, in particular to a light projection lamp adopting a linear temperature control scheme.

Background

The projector is a lamp that specifies that the illuminance on the illuminated surface is higher than that in the surrounding environment. Also known as spotlights. In general, it can be aimed in any direction and has a three-proofing structure that is not affected by climatic conditions. The method is mainly used for outdoor places such as large-area operation sites, mines, building outlines, stadiums, overpasses, monuments, parks, flower beds and the like. Therefore, almost all large area lighting fixtures used outdoors can be considered as floodlights. The novel LED lamp bead has the advantages of high brightness, long service life, no flicker, no thermal radiation and the like, and has natural advantages when used for projection lamps. However, when the high-power LED lamp bead works, a large amount of heat energy can be generated, and meanwhile, the LED lamp bead has very high sensitivity to the driving current. In order to solve the problem of heat dissipation, a fan is usually used to increase the air flow rate to achieve the purpose of active heat dissipation, but because the fan has certain noise during operation and needs to reserve a channel for air circulation, the active heat dissipation device is not beneficial to sealing and insulating of the lamp, and cannot be widely applied to civil lighting equipment. In addition, although the switching power supply is adopted to supply power to the LED lamp beads, constant-current power supply can be realized, but because electronic components such as transformers, inductors and capacitors which are used by the switching power supply in large quantity cannot be pasted on the same substrate with the LED lamp beads, the LED lamp bead substrate and the power panel can only be produced and installed respectively, the structure is complex, and heat dissipation is not facilitated. Different from a switch power supply, the linear power supply is characterized in that an input power supply is subjected to primary alternating current voltage stabilization through a pre-voltage stabilizing circuit, then is converted into a direct current power supply through isolation and rectification of a main working transformer, and then is subjected to fine adjustment of a linear adjusting element under the intelligent control of a control circuit and a single chip microprocessor controller so as to output a high-precision direct current voltage source. The voltage feedback circuit of the linear power supply works in a linear state, namely, the output voltage is sampled and then sent to the comparison voltage amplifier together with the reference voltage, the output of the voltage amplifier is used as the input of the voltage adjusting tube and used for controlling the adjusting tube to enable the junction voltage of the adjusting tube to change along with the change of the input, and therefore the output voltage of the adjusting tube is adjusted. Because the circuit topology discards the influence of components such as a traditional transformer, an inductor and a capacitor, the linear high-voltage LED driving scheme can realize that the LED lamp bead and electronic components of the linear power supply are processed and pasted on the same substrate at one time, the integrated design of the light source and the power supply is realized, the structure is simplified, and the heat dissipation efficiency is improved.

Disclosure of Invention

The utility model aims to provide a light projecting lamp which is reasonable in structure, good in heat conduction and heat dissipation effect, long in service life, simple in assembly process and convenient to maintain and install and adopts a linear temperature control scheme.

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

the utility model relates to a light projecting lamp adopting a linear temperature control scheme, which comprises a shell and an LED substrate arranged in the shell, wherein the shell is provided with a bracket and comprises a shell bottom plate and a side surrounding plate of an annular structure arranged around the shell bottom plate, the inner wall of the shell bottom plate is adhered with a metal heat conducting sheet, the back surface of the LED substrate is tightly adhered to the metal heat conducting sheet, a panel is buckled on the shell, the panel is provided with a panel window for accommodating the LED substrate, and the outline of the panel is connected with the edge of the side surrounding plate of the shell.

A frame is arranged between the outer contour of the panel and the edge of the side wall plate of the shell, the frame is embedded into the side wall plate, and the edge of the outer contour of the panel is connected with the frame through a buckle.

The panel window of the panel is provided with a conical tube connecting piece which is in a conical tube structure, the large end of the conical tube connecting piece is connected with the edge of the panel window, and the small end of the conical tube connecting piece is connected with the edge of the LED substrate.

The LED substrate is rectangular, and the large head end and the small head end of the conical cylinder connecting piece are both of rectangular structures.

The shell bottom plate and the metal heat conducting fins are both of rectangular sheet structures, the edges of the metal heat conducting fins are tightly attached to the side enclosing plates, and at least one side edge of each metal heat conducting fin is provided with a folded edge matched with the side enclosing plate.

The shell bottom plate is provided with a positioning column, a through hole for accommodating the positioning column is formed in the metal heat conducting sheet, a positioning screw hole matched with the positioning column is formed in the big end of the conical tube connecting piece, and the conical tube connecting piece is fixedly installed on the positioning column through a positioning screw installed in the positioning screw hole.

And a temperature control type linear power supply module is arranged on the inner side of the panel and below the panel window, is used for supplying power to the LED substrate and is fixedly connected to the metal heat conducting sheet through screws.

A temperature control type linear power supply is mounted on the LED substrate in an attached mode and provides working power supply for the LED lamp beads.

By adopting the technical scheme, the light projecting lamp has a compact and reasonable structure and is convenient to assemble and produce; the composite heat dissipation material is tightly attached, the contact area is large, the heat conduction efficiency is high, the heat dissipation effect is guaranteed, meanwhile, the insulation performance is good, the electric shock danger is thoroughly avoided, and the use is safe and reliable.

Drawings

Fig. 1 is an exploded view of one embodiment of the present invention.

Fig. 2 is a schematic perspective view of the embodiment of fig. 1.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in fig. 1 and 2, the light projecting lamp adopting the linear temperature control scheme of the utility model comprises a housing 1 and an LED substrate 2 installed in the housing 1, wherein a bracket 3 is installed on the housing 1, and the bracket 3 is hinged on the housing 1, so that the housing 1 can be inclined at a certain angle to change the irradiation direction of the light projecting lamp.

The shell 1 is of a flat disc-shaped structure and comprises a shell bottom plate 11 and a side wall plate 12 of an annular structure arranged around the shell bottom plate 11, and the shell 1 is integrally formed by engineering plastics with good insulating property and strong heat conducting capacity. The inner wall of the shell bottom plate 11 is adhered with a metal heat conducting sheet 4, the back of the LED substrate 2 is closely adhered to the metal heat conducting sheet 4, and the other panel 5 is buckled on the shell 1. The shell bottom plate 11 and the metal heat conducting strip 4 can be bonded by heat conducting glue or fixed by screws; adopt screw fixed connection between LED base plate 2 and the metal conducting strip 4, make LED base plate 2 heat can be conducted to shell 1 through metal conducting strip 4 on, outwards dispel the heat through shell 1.

The panel 5 is provided with a panel window 51 for accommodating the LED substrate 2, and the outer contour of the panel 5 is connected with the edge of the side wall 12 of the shell 1.

As shown in fig. 1, when a split type power module is adopted, a temperature control type linear power module 8 is arranged on the inner side of the panel 5 and below the panel window 51, the temperature control type linear power module 8 is used for supplying power to the LED substrate 2, and the temperature control type linear power module 8 is fixedly connected to the metal heat conducting sheet 4 through screws.

Certainly, as another embodiment, the power module may also be integrated on the LED substrate 2, in this embodiment, a temperature-controlled linear power supply is attached to the LED substrate 2, and the temperature-controlled linear power supply provides a working power supply for the LED lamp bead.

The temperature control type linear power supply or the temperature control type linear power supply module 8 adopts the existing mature technical scheme, compared with a switching power supply driving scheme, the linear power supply scheme is simple in design and convenient to operate, and due to the fact that the circuit topology abandons the influence of traditional transformers, inductors, capacitors and other components, the light source and the electronic components can be processed and pasted on a whole aluminum substrate at one time, and the integrated design of the light source and the power supply is achieved. In addition, the driving power supply IC adopts a temperature control scheme to drive the IC chip, the temperature at the internal real-time sampling functional pin is compared through internal operation, the temperature return point is controlled at 110 ℃, and if the internal temperature of the driving chip IC exceeds 110 ℃, the whole lamp power of the lamp is controlled by reducing the turn-on time of a power tube in the chip. When the lamp is used in an area with overhigh ambient temperature, the heat dissipation of the lamp is protected, the lamp is always operated in a reasonable temperature range, and the application reliability of the lamp is improved.

As shown in fig. 1, as an embodiment of the present invention, a frame 6 is disposed between the outer contour of the panel 5 and the edge of the side wall 12 of the housing 1, the frame 6 is embedded into the side wall 12, and the outer contour edge of the panel 5 is connected to the frame 6 by a snap. The frame 6 is made of relatively soft material such as silica gel, soft plastic and the like. The frame 6 can play a role in sealing, the sealing effect between the panel 5 and the side wall plate 12 is improved, meanwhile, the transferring difficulty of the panel 5 can be reduced, and the assembly efficiency is improved.

As a further improvement of the present invention, a cone connecting piece 7 is mounted on the panel window 51 of the panel 5, the cone connecting piece 7 is in a cone-shaped structure, a large end of the cone connecting piece 7 is connected with the edge of the panel window 51, and a small end of the cone connecting piece 7 is connected to the edge of the LED substrate 2. The conical barrel connecting piece 7 can play a role of a light guide barrel, so that light rays emitted by the LED substrate 2 are intensively projected to one direction; in addition, the conical tube connecting piece 7 can well seal the gap between the panel 5 and the LED substrate 2, and the waterproof performance is improved while the heat dissipation effect is not influenced.

As a further improvement of the present invention, the LED substrate 2 is rectangular, the large end and the small end of the conical cylinder connecting piece 7 are both rectangular structures, the housing bottom plate 11 and the metal heat conducting strip 4 are both rectangular sheet structures, the edge of the metal heat conducting strip 4 is tightly attached to the side wall 12, and at least one side of the metal heat conducting strip 4 is provided with a folded edge 41 matching with the side wall 12. This maximizes the use of the metal heat-conducting strip 4 for heat conduction. Of course, the LED substrate 2 may also be circular, and the corresponding cone connector 7 may also be a circular cone-shaped structure.

As a further improvement of the present invention, a positioning column 13 is disposed on the housing bottom plate 11, a through hole for accommodating the positioning column 13 is disposed on the metal heat conducting strip 4, a positioning screw hole 71 matched with the positioning column 13 is disposed at the large end of the conical tube connecting member 7, and the conical tube connecting member 7 is fixedly mounted on the positioning column 13 by a positioning screw mounted in the positioning screw hole 71. During assembly, the metal heat conducting sheet 4 is firstly sleeved on the positioning column 13 to fix the position of the metal heat conducting sheet 4, and then the metal heat conducting sheet 4 and the shell bottom plate 11 are tightly attached together in an adhesive or screw fixing mode, so that the assembly efficiency can be greatly improved, and the assembly error is reduced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an adopt light projector lamps and lanterns of linear control by temperature change scheme, includes shell (1), installs LED base plate (2) in shell (1), install support (3), its characterized in that on shell (1): the LED light source is characterized in that the shell (1) comprises a shell bottom plate (11) and a side enclosing plate (12) which is arranged around the shell bottom plate (11) and is of an annular structure, a metal heat conducting sheet (4) is attached to the inner wall of the shell bottom plate (11), the back of the LED substrate (2) is closely attached to the metal heat conducting sheet (4), a panel (5) is buckled on the shell (1), a panel window (51) for containing the LED substrate (2) is arranged on the panel (5), and the outline of the panel (5) is connected with the edge of the side enclosing plate (12) of the shell (1).

2. A light projector as claimed in claim 1, wherein said linear temperature control scheme is applied to: a frame (6) is arranged between the outer contour of the panel (5) and the edge of a side wall plate (12) of the shell (1), the frame (6) is embedded into the side wall plate (12), and the outer contour edge of the panel (5) is connected with the frame (6) through a buckle.

3. A light projector as claimed in claim 1 or 2, wherein said linear temperature control scheme is applied to: install on panel window (51) of panel (5) and bore a section of thick bamboo connecting piece (7), bore a section of thick bamboo connecting piece (7) and be awl tube-shaped structure, the edge connection of the big head end and panel window (51) of a section of thick bamboo connecting piece (7), the tip end of a section of thick bamboo connecting piece (7) of awl is connected to the edge of LED base plate (2).

4. A light projector as claimed in claim 3, wherein said linear temperature control scheme is applied to: the LED substrate (2) is rectangular, and the large head end and the small head end of the conical cylinder connecting piece (7) are both rectangular structures.

5. A light projector as claimed in claim 1 or 2, wherein said linear temperature control scheme is applied to: the shell bottom plate (11) and the metal heat conducting fins (4) are both of rectangular sheet structures, the edges of the metal heat conducting fins (4) are tightly attached to the side enclosing plates (12), and at least one side edge of each metal heat conducting fin (4) is provided with a folded edge (41) matched with the side enclosing plate (12).

6. A light projector as claimed in claim 3, wherein said linear temperature control scheme is applied to: be provided with reference column (13) on shell bottom plate (11), be provided with the through hole that holds reference column (13) on metal conducting strip (4), the major part end of awl section of thick bamboo connecting piece (7) is provided with positioning screw hole (71) of matcing reference column (13), the positioning screw of installation will bore section of thick bamboo connecting piece (7) fixed mounting on reference column (13) in positioning screw hole (71).

7. A light projector as claimed in claim 3, wherein said linear temperature control scheme is applied to: a temperature control type linear power supply module (8) is arranged on the inner side of the panel (5) and below the panel window (51), the temperature control type linear power supply module (8) is used for supplying power to the LED substrate (2), and the temperature control type linear power supply module (8) is fixedly connected to the metal heat conducting sheet (4) through screws.

8. A light projector as claimed in claim 1 or 2, wherein said linear temperature control scheme is applied to: a temperature control type linear power supply is mounted on the LED substrate (2) in an attached mode and provides working power supply for the LED lamp beads.