CN212204146U

CN212204146U - Desk lamp with independent light source

Info

Publication number: CN212204146U
Application number: CN202021220622.2U
Authority: CN
Inventors: 卓楚光
Original assignee: Guangdong Dp Co ltd
Current assignee: Guangdong Dp Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-12-22
Anticipated expiration: 2030-06-29

Abstract

The application provides an independent light source desk lamp which comprises a lamp cap shell, a base and a connecting rod, wherein one end of the connecting rod is fixedly connected with the lamp cap shell, the other end of the connecting rod is fixedly connected with the base, a PCB is arranged inside the lamp cap shell, and an LED light source is arranged on the PCB; and an LED constant current driving power supply is arranged in the base and is connected with the LED light source on the PCB. The end face of the heat dissipation cover is in contact with the surface of the PCB, so that when the heat dissipation cover protects the PCB from dust, water and the like, heat generated on the PCB can be transmitted out through the heat dissipation cover very quickly, the heat dissipation efficiency is improved, and the influence of temperature on current is reduced.

Description

Desk lamp with independent light source

Technical Field

The utility model relates to a desk lamp technical field, in particular to independent light source desk lamp.

Background

The state has definite standards for eye-protecting lamps, the standard of the eye-protecting lamps reaches the national A level, and the highest eye-protecting lamps reaches the national AA level. The national A standard requires that the illuminance is more than 150LX within 50 cm of the radius of the center of a circle, the illuminance within 30 cm is more than 250LX, and the uniformity is not more than 3.

An LED is a semiconductor diode whose current-voltage characteristic varies with temperature. When the input current changes with the temperature, the illuminance of the input current is easy to change, so that the problem that the input current cannot reach the national class A standard is easily caused.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model provides an independent light source desk lamp, which comprises a lamp cap shell, a base and a connecting rod, wherein one end of the connecting rod is fixedly connected with the lamp cap shell, the other end of the connecting rod is fixedly connected with the base, and the PCB, the connecting plate and a heat dissipation cover are arranged inside the lamp cap shell; the PCB is fixed on the inner wall of the lamp holder shell; the cover surface of the heat dissipation cover is fixed on the PCB through screws, and one end, far away from the cover surface, of the heat dissipation cover is abutted against the inner wall of the lamp holder shell; one side wall of the connecting plate is abutted to the cover surface of the heat dissipation cover, the other side wall of the connecting plate is abutted to the inner wall of the lamp holder shell, a metal plug is integrally formed on the side wall of the connecting plate and the heat dissipation cover, and the metal plug penetrates through the heat dissipation cover and stretches into the heat dissipation holes of the PCB.

The utility model discloses an in some embodiments, install LED light source and LED constant current drive power supply on the PCB board, LED constant current drive power supply and LED light source electric connection.

The utility model discloses an in some embodiments, independent light source desk lamp still includes the switch module, the switch module is installed on the base, wherein, switch module, LED constant current drive power supply and LED light source concatenate in proper order.

In some embodiments of the present invention, the switch assembly comprises a button, a switch, and a switch housing; the button is placed in the base, the upper part of the button extends out of the upper end face of the base, the lower part of the button extends into the switch base and is abutted against the upper part of the switch base, and the button can move up and down along the axis direction of the switch base; the switch is placed in the switch seat, the upper portion of the switch is in contact with the button, the lower portion of the switch is in contact with the bottom of the switch seat, and the switch, the LED constant-current driving power supply and the LED light source are sequentially connected in series.

In some embodiments of the present invention, the lamp cap outer shell is further provided with a lamp cap inner shell and a lamp cover inside; the lamp holder inner shell is fixedly connected with the lamp holder outer shell through a screw, and the PCB is fixedly installed in the lamp holder inner shell through a screw; the lampshade is detachably arranged on one side wall of the lamp holder inner shell, which is far away from the PCB.

In some embodiments of the present invention, the lamp cover is a soft screen lamp cover.

The utility model discloses an in some embodiments, the metal plug stretches into the terminal surface of the one end of louvre with the PCB board is kept away from a terminal surface parallel and level of cooling cover.

In some embodiments of the present invention, the base comprises an upper shell and a lower shell detachably connected to the upper shell; and a balancing weight is arranged in the upper placing cavity of the lower shell and is positioned between the upper shell and the lower shell.

In some embodiments of the present invention, the connecting rod comprises an iron rod and a silica gel sleeve sleeved on the upper end of the iron rod; the upper end and the lower end of the iron rod are both provided with thread grooves, one end of the iron rod is in threaded connection with the lamp holder shell, and the other end of the iron rod is in threaded connection with the base.

In some embodiments of the present invention, the LED light source is an SMD LED light source.

The utility model provides an independent light source desk lamp adopts the terminal surface of heat dissipation lid and the surface contact of PCB board, when the heat dissipation lid carries out protection such as dustproof, waterproof to the PCB board for the heat that produces on the PCB board can be transmitted out via the heat dissipation lid very fast, thereby has improved the radiating efficiency, and then has reduced the influence of temperature to the electric current.

Drawings

Fig. 1 is an assembly schematic view of an independent light source desk lamp according to an embodiment of the present invention;

fig. 2 is a top view of an independent light source desk lamp according to an embodiment of the present invention;

fig. 3 is an exploded view of a lamp head housing according to an embodiment of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is an exploded view of a base according to an embodiment of the present invention;

fig. 6 is an enlarged view at B in fig. 5;

fig. 7 is a block diagram of a current transmission flow of an independent light source desk lamp according to an embodiment of the present invention;

fig. 8 is a circuit control diagram of an LED constant current driving power supply according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a lamp cap housing; 11. a lamp cap inner shell; 12. a lamp shade; 13. a PCB board; 1301. heat dissipation holes; 14. a connecting plate; 1401. a metal plug; 15. a heat dissipation cover; 20. a base; 21. an upper housing; 22. a lower housing; 2201. an LED constant current driving power supply; 23. a balancing weight; 30. a connecting rod; 40. a switch assembly; 41. a button; 42. a switch; 43. a switch base.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-7, the desk lamp with independent light source includes a lamp cap housing 10, a base 20 and a connecting rod 30, wherein one end of the connecting rod 30 is fixedly connected to the lamp cap housing 10, the other end is fixedly connected to the base 20, and a PCB 13, a connecting plate 14 and a heat dissipation cover 15 are disposed inside the lamp cap housing 10; the PCB 13 is fixed on the inner wall of the lamp holder shell 10; the cover surface of the heat dissipation cover 15 is fixed on the PCB 13 through screws, and one end of the heat dissipation cover 15, which is far away from the cover surface, is abutted against the inner wall of the lamp holder shell 10; one side wall of the connecting plate 14 is abutted with the cover surface of the heat dissipation cover 15, the other side wall is abutted with the inner wall of the lamp holder shell 10, and a metal plug 1401 is integrally formed on the side walls of the connecting plate 14 and the heat dissipation cover 15, and the metal plug 1401 penetrates through the heat dissipation cover 15 and extends into a heat dissipation hole 1301 of the PCB 13.

The PCB 13 is provided with an LED light source and an LED constant current driving power supply, and the LED constant current driving power supply 2201 is electrically connected with the LED light source.

In the structural design, the base 20 is connected with the lamp cap shell 10 through the connecting rod 30, so that the base 20 can support the lamp cap shell 10, the PCB 13 is arranged on the lamp cap shell 10, the LED light source arranged on the PCB 13 can illuminate, the LED constant current driving power supply is connected with the LED light source on the PCB 13, so that constant current can be continuously input to the LED light source, the problem that the current is easy to change along with the temperature change is solved, the illumination intensity of the LED can be kept in a constant state, thereby the desk lamp can be maintained in the national A-level standard, the end surface of the radiating cover 15 is contacted with the surface of the PCB 13, when the heat dissipation cover 15 protects the PCB 13 from dust, water and the like, heat generated on the PCB 13 can be quickly transmitted out through the heat dissipation cover 15, so that the heat dissipation efficiency is improved, and the influence of temperature on current is reduced.

The metal plug 1401 integrally formed on the side wall of the heat dissipation cover 15 penetrates through the heat dissipation cover 15 and extends into the heat dissipation hole 1301 of the PCB 13, so that the effects of heat transfer and heat dissipation of the inside of the PCB 13 are achieved, and the heat dissipation speed of the PCB 13 is accelerated.

As shown in fig. 3, the inner cap shell 11 and the lamp housing 12 are further disposed inside the outer cap shell 10; the lamp holder inner shell 11 is fixedly connected with the lamp holder outer shell 10 through screws, wherein the PCB 13 is fixedly arranged in the lamp holder inner shell 11 through screws; the globe 12 is detachably mounted on a side wall of the cap inner case 11 away from the PCB board 13.

Specifically, the lamp housing 12 is a soft screen lamp housing. Therefore, the irradiated light is softer, and the effect of not hurting eyes is achieved.

As shown in fig. 3, the connection plate 14 and the heat dissipation cover 15 are further disposed inside the base housing 10; the cover surface of the heat dissipation cover 15 is fixed on the PCB 13 through screws, and one end of the heat dissipation cover 15, which is far away from the cover surface, is abutted against the inner wall of the lamp holder shell 10; one side wall of the connecting plate 14 is abutted with the cover surface of the heat dissipation cover 15, the other side wall is abutted with the inner wall of the lamp holder shell 10, and a metal plug 1401 is integrally formed on the side walls of the connecting plate 14 and the heat dissipation cover 15, and the metal plug 1401 penetrates through the heat dissipation cover 15 and extends into a heat dissipation hole 1301 of the PCB 13.

Specifically, the end face of the end of the metal plug 1401 extending into the heat dissipation hole 1301 is flush with the end face of the PCB 13 away from the heat dissipation cover 15. Thus, the problem that the metal plug 1401 protrudes out of the PCB 13, so that an illumination shadow may occur when the LED light source illuminates is avoided.

With respect to the specific structure of the base 20, as shown in fig. 5, the base 20 includes an upper case 21 and a lower case 22 detachably coupled to the upper case 21; a counterweight 23 is arranged in the upper placing cavity of the lower shell 22, and the counterweight 23 is positioned between the upper shell 21 and the lower shell 22; the LED constant current driving power supply is arranged in the lower placing cavity of the lower shell 22. In this way, the weight 23 is provided inside the lower case 22, and the weight of the lower case 22 can be increased, thereby improving the stability of supporting the base housing 10.

For the specific structure of the independent light source table lamp, as shown in fig. 5, the independent light source table lamp further includes a switch assembly 40, the switch assembly 40 is installed on the base 20, wherein the LED constant current driving power supply, the switch assembly 40 and the LED light source are sequentially connected in series. Thus, the worker can synchronously control the on and off of the LED light source in real time by controlling the on and off of the switch assembly 40.

With respect to the specific structure of the switch assembly 40, as shown in fig. 6, the switch assembly 40 includes a button 41, a switch 42, and a switch base 43; the button 41 is placed in the base 20, the upper part of the button 41 extends out of the upper end surface of the base 20, the lower part of the button 41 extends into the switch seat 43 and is abutted with the upper part of the switch seat 43, and the button 41 can move up and down along the axial direction of the switch seat 43; the switch 42 is disposed in the switch base 43, and the upper portion of the switch 42 contacts with the button 41, and the lower portion contacts with the bottom of the switch base 43, wherein the LED constant current driving power supply, the switch 42 and the LED light source are connected in series in sequence.

For the concrete structure of the connecting rod 30 (not shown in the figure), the connecting rod 30 comprises an iron rod and a silica gel sleeve sleeved on the upper end of the iron rod; the upper and lower both ends of iron set are all provided with the thread groove, and the one end and the lamp holder shell 10 threaded connection of iron set, the other end and base 20 threaded connection. Like this, the iron set can be crooked to can adjust the height of lamp holder shell 10, establish the silica gel cover at the outer lane cover of iron set, avoid external environment to corrode the iron set, prolonged the service life of iron set.

Specifically, the LED light source is an SMD LED light source. Thus, the reliability of the LED light source is high.

The above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. Independent light source desk lamp, including lamp holder shell (10), base (20) and connecting rod (30), the one end of connecting rod (30) with lamp holder shell (10) fixed connection, the other end with base (20) fixed connection, its characterized in that:

a PCB (13), a connecting plate (14) and a heat dissipation cover (15) are arranged inside the lamp cap shell (10);

the PCB (13) is fixed on the inner wall of the lamp holder shell (10);

the cover surface of the heat dissipation cover (15) is fixed on the PCB (13) through screws, and one end, far away from the cover surface, of the heat dissipation cover (15) is abutted against the inner wall of the lamp holder shell (10);

one side wall of the connecting plate (14) is abutted to the cover surface of the heat dissipation cover (15), the other side wall of the connecting plate is abutted to the inner wall of the lamp holder shell (10), a metal plug (1401) is integrally formed on the side wall of the connecting plate (14) and the heat dissipation cover (15), and the metal plug (1401) penetrates through the heat dissipation cover (15) and extends into the heat dissipation hole (1301) of the PCB (13).

2. The desk lamp with the independent light source as claimed in claim 1, wherein the PCB (13) is provided with an LED light source and an LED constant current driving power supply, and the LED constant current driving power supply is electrically connected with the LED light source.

3. The desk lamp with the independent light source as claimed in claim 2, further comprising a switch assembly (40), wherein the switch assembly (40) is mounted on the base (20), and the switch assembly (40), the LED constant current driving power supply and the LED light source are connected in series in sequence.

4. The stand-alone light source desk lamp of claim 3, wherein the switch assembly (40) comprises a button (41), a switch (42) and a switch base (43);

the button (41) is placed in the base (20), the upper part of the button (41) extends out of the upper end face of the base (20), the lower part of the button (41) extends into the switch seat (43) and is abutted against the upper part of the switch seat (43), and the button (41) can move up and down along the axial direction of the switch seat (43);

the switch (42) is arranged in the switch seat (43), the upper part of the switch (42) is in contact with the button (41), the lower part of the switch (42) is in contact with the bottom of the switch seat (43), and the switch (42), the LED constant-current driving power supply and the LED light source are sequentially connected in series.

5. The desk lamp with an independent light source as claimed in claim 1, wherein the lamp cap outer shell (10) is further provided with a lamp cap inner shell (11) and a lamp shade (12) inside;

the lamp holder inner shell (11) is fixedly connected with the lamp holder outer shell (10) through screws, wherein the PCB (13) is fixedly installed in the lamp holder inner shell (11) through screws;

the lampshade (12) is detachably mounted on one side wall of the lamp holder inner shell (11) far away from the PCB (13).

6. The stand-alone light source desk lamp of claim 5, wherein said lamp housing (12) is a soft screen lamp housing.

7. The desk lamp with independent light source as claimed in claim 1, wherein the end face of the metal plug (1401) extending into the end of the heat dissipation hole (1301) is flush with the end face of the PCB board (13) far away from the heat dissipation cover (15).

8. The stand-alone light source desk lamp of claim 1, wherein the base (20) comprises an upper housing (21) and a lower housing (22) detachably connected to the upper housing (21);

a balancing weight (23) is arranged in the upper placing cavity of the lower shell (22), and the balancing weight (23) is positioned between the upper shell (21) and the lower shell (22).

9. The desk lamp with the independent light source as claimed in claim 1, wherein the connecting rod (30) comprises an iron rod and a silica gel sleeve sleeved on the upper end of the iron rod;

the upper end and the lower end of the iron rod are both provided with thread grooves, one end of the iron rod is in threaded connection with the lamp holder shell (10), and the other end of the iron rod is in threaded connection with the base (20).

10. The standalone light source table lamp of claim 2, wherein the LED light source is an SMD LED light source.