CN203686738U

CN203686738U - Foldable AC (Alternating Current) LED (Light Emitting Diode) desk lamp with amplifying glass

Info

Publication number: CN203686738U
Application number: CN201320716945.4U
Authority: CN
Inventors: 刘现梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-13
Filing date: 2013-11-13
Publication date: 2014-07-02
Anticipated expiration: 2023-11-13

Abstract

The utility model discloses a foldable AC (Alternating Current) LED (Light Emitting Diode) desk lamp with an amplifying glass. The foldable AC LED consists of an upper cover body, a first rotating shaft, a support plate, a first lower support arm, an electrical lead, a second rotating shaft, a switch, a base, a second lower support arm, a third rotating shaft and a convex lens. By using an AC LED array for illuminating, an LED driving circuit is simplified; by using the set convex lens, the amplification of an object for observation by a user is facilitated; by using the first rotating shaft, the support plate, the first lower support arm, the second rotating shaft, the second lower support arm and the third rotating shaft, the height of the AC LED desk lamp can be adjusted; when the AC LED desk lamp is not used, the first rotating shaft, the support plate, the first lower support arm, the second rotating shaft, the second lower support arm and the third rotating shaft can also be folded, so that the size is reduced. The foldable AC LED desk lamp has the characteristics of convenience, simpleness and practicality.

Description

A kind of collapsible AC LED desk lamp with magnifying glass

Technical field

The utility model relates to daily apparatus field, espespecially a kind of collapsible AC LED desk lamp with magnifying glass.

Background technology

At present a lot of LED light fixtures break down, and are not that the LED light source life-span is most, but AC-DC conversion and rectification circuit that LED light fixture uses first broken down, therefore limited in range of application and popularization degree.The power supply using due to our normal lighting is high-voltage alternating, so must obtain lower voltage by the technology of step-down, conventional is transformer or Switching Power Supply step-down, then will exchange (AC) and be transformed into direct current (DC), be transformed into again DC constant current power supply, just can impel LED light source luminous, so in the time that it is applied to general AC power-supply system (as AC 220V), just must see through the operation smoothly of additional transformer and rectification circuit, increase exceptional space and cost, and due to voltage transitions, the factors such as rectification circuit energy consumption and high current practice, cause more electric energy loss.In addition, in the maintenance of electrical equipment and integrated circuit, testing process, often need object part or partial circuit to carry out amplifying observation, need to use magnifying glass, the using and deposit and can bring many inconveniences of magnifying glass.

Summary of the invention

A kind of collapsible AC LED desk lamp with magnifying glass of the utility model, its objective is the deficiency that can solve above-mentioned technology, a kind of working stability is provided, does not use AC-DC conversion and transformer, utilize convex lens to carry out amplifying observation to object, the AC LED desk lamp that can adjust height and fold.

To achieve these goals, technical solution of the present utility model is: a kind of collapsible AC LED desk lamp with magnifying glass is by upper cover body, the first rotating shaft, support plate, the first lower branch arm, electric lead, the second rotating shaft, switch, base, the second lower branch arm, the 3rd rotating shaft and convex lens composition, the left end of upper cover body carries out chain connection by the upper end of the first rotating shaft and support plate, chain connection is carried out with the first lower branch arm and the second lower branch arm respectively by the 3rd rotating shaft in the lower end of support plate, the other end of the first lower branch arm and the second lower branch arm carries out chain connection by the second rotating shaft and base respectively, upper cover body is provided with convex lens and AC LED, electric lead and switch are set on base, electric lead enters after base, passing through respectively the second rotating shaft, the first lower branch arm or the second lower branch arm, the 3rd rotating shaft, support plate, enter upper cover body, be connected with the AC LED circuit being arranged in upper cover body.

Further, described AC LED circuit is made up of fuse FUSE, thermistor RT, resistance R 1, resistance R 2, resistance R 3 and AC LED array, fuse FUSE is connected with live wire L, the other end of fuse FUSE is connected with the one end after thermistor RT and resistance R 1 parallel connection, thermistor RT is connected with AC LED array with the other end after resistance R 1 parallel connection, the other end of AC LED array is connected in resistance R 2 one end after in parallel with resistance R 3, and resistance R 2 is connected with zero line N with the other end after resistance R 3 parallel connections.

The beneficial effects of the utility model are: utilize AC LED array luminous, simplified LED drive circuit; Utilize the convex lens person easy to use who arranges to carry out amplifying observation to object; The height that can adjust AC LED desk lamp by the first rotating shaft, support plate, the first lower branch arm, the second rotating shaft, the second lower branch arm and the 3rd rotating shaft, while stopping using, can also fold, and reduces volume.Have conveniently, simple, practical feature.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

Accompanying drawing 1 is structural representation of the present utility model;

Accompanying drawing 2 is AC LED circuit schematic diagram of the present utility model.

In figure: 1, upper cover body, 2, the first rotating shaft, 3, support plate, 4, the first lower branch arm, 5, electric lead, 6, the second rotating shaft, 7, switch, 8, base, 9, the second lower branch arm, 10, the 3rd rotating shaft, 11, convex lens.

The specific embodiment

Shown in accompanying drawing 1 and accompanying drawing 2, a kind of collapsible AC LED desk lamp with magnifying glass of the utility model is by upper cover body 1, the first rotating shaft 2, support plate 3, the first lower branch arm 4, electric lead 5, the second rotating shaft 6, switch 7, base 8, the second lower branch arm 9, the 3rd rotating shaft 10 and convex lens 11 form, the left end of upper cover body 1 carries out chain connection by the first rotating shaft 2 and the upper end of support plate 3, chain connection is carried out with the first lower branch arm 4 and the second lower branch arm 9 respectively by the 3rd rotating shaft 10 in the lower end of support plate 3, the other end of the first lower branch arm 4 and the second lower branch arm 9 carries out chain connection by the second rotating shaft 6 with base 8 respectively, upper cover body 1 is provided with convex lens 11 and AC LED, electric lead 5 and switch 7 are set on base 8, electric lead 5 enters after base 8, passing through respectively the second rotating shaft 6, the first lower branch arm 4 or the second lower branch arm 9, the 3rd rotating shaft 10, support plate 3, enter upper cover body 1, be connected with the AC LED circuit being arranged in upper cover body 1.

When use, switch on power, open switch 7, AC LED circuit drives AC LED luminous, and the convex lens 11 that arrange by upper cover body 1 carry out amplifying observation to object, adjust the height of AC LED desk lamp by the first rotating shaft 2, support plate 3, the first lower branch arm 4, the second rotating shaft 6, the second lower branch arm 9 and the 3rd rotating shaft 10, while stopping using, can also fold, reduce volume, convenient placement.

The above; embodiment is only that preferred embodiment of the present utility model is described; not scope of the present utility model is limited; under the prerequisite of spirit that does not depart from the utility model technology; various distortion and improvement that this area engineers and technicians make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.

Claims

1. the collapsible AC LED desk lamp with magnifying glass, it is characterized in that: described a kind of collapsible AC LED desk lamp with magnifying glass is by upper cover body, the first rotating shaft, support plate, the first lower branch arm, electric lead, the second rotating shaft, switch, base, the second lower branch arm, the 3rd rotating shaft and convex lens composition, the left end of upper cover body carries out chain connection by the upper end of the first rotating shaft and support plate, chain connection is carried out with the first lower branch arm and the second lower branch arm respectively by the 3rd rotating shaft in the lower end of support plate, the other end of the first lower branch arm and the second lower branch arm carries out chain connection by the second rotating shaft and base respectively, upper cover body is provided with convex lens and AC LED, electric lead and switch are set on base, electric lead enters after base, passing through respectively the second rotating shaft, the first lower branch arm or the second lower branch arm, the 3rd rotating shaft, support plate, enter upper cover body, be connected with the AC LED circuit being arranged in upper cover body.

2. a kind of collapsible AC LED desk lamp with magnifying glass according to claim 1, it is characterized in that: described AC LED circuit is by fuse FUSE, thermistor RT, resistance R 1, resistance R 2, resistance R 3 and AC LED array composition, fuse FUSE is connected with live wire L, the other end of fuse FUSE is connected with the one end after thermistor RT and resistance R 1 parallel connection, thermistor RT is connected with AC LED array with the other end after resistance R 1 parallel connection, the other end of AC LED array is connected in resistance R 2 one end after in parallel with resistance R 3, resistance R 2 is connected with zero line N with the other end after resistance R 3 parallel connections.