CN203258435U

CN203258435U - LED lamp with over-current protective device

Info

Publication number: CN203258435U
Application number: CN 201320252774
Authority: CN
Inventors: 欧阳柳
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-11
Filing date: 2013-05-11
Publication date: 2013-10-30
Anticipated expiration: 2023-05-11

Abstract

The utility model discloses an LED lamp with an over-current protective device. The LED lamp comprises a lamp cover, an LED lamp panel, an LED lamp body, an alternating and direct current rectifier, a power line and a plug. The LED lamp body is arranged on the LED lamp panel, the LED lamp panel is arranged in the lamp cover, the power line is connected with the plug, the alternating and direct current rectifier is arranged in the lamp cover, the alternating current input end of the alternating and direct current rectifier is connected with the power line, the direct current output end of the alternating and direct current rectifier is electrically connected with the LED lamp body, and the over-current protective device is arranged on the LED lamp panel. The LED lamp with the over-current protective device is easy to operate and different from previous products (for example, a lamp with a timing switch and a lamp with a voice operated switch). The LED lamp with the over-current protective device achieves automatic starting through intensity of external light and can be kept within a range of weak brightness, and therefore the situation that due to the fact that the lamp light is kept on for a long time, electricity is wasted can be effectively avoided.

Description

A kind of LED light fixture with overcurrent protection

Technical field

The utility model relates to lighting engineering, especially a kind of LED light fixture with overcurrent protection.

Background technology

Energy savings is the large theme that society faces, and in the face of the swift and violent increase of commercial power and the urgent need of people's household electricity, at present, supply of electric power is very nervous, and the severe power shortage of often making a noise.Seek new product, alleviate the electricity consumption imbalance between supply and demand, this is that pendulum is in a top priority of governments at all levels and relevant department.Fluorescent lamp substitutes bulb, has saved the part electric energy, but is badly in need of in the face of growing electricity consumption, still can not alleviate the imbalance between supply and demand of electricity consumption, the new new energy saving product of essential searching.The LED light fixture has power savings advantages, but existing LED lamp needs direct current supply, does not also have the structure of rectifier and LED lamp integral type on the market, and therefore existing LED lamp uses comparatively inconvenience, needs special distribution source.

The utility model content

The purpose of this utility model is a kind of easy to use and energy-conservation LED light fixture with overcurrent protection that designs for the deficiency that solves above-mentioned technology.

The utility model is to adopt technical scheme to be:

A kind of LED light fixture with overcurrent protection, comprise lampshade, the LED lamp plate, the LED lamp, ac/ac power converter, power line and plug, described LED lamp is arranged on the LED lamp plate, described LED lamp plate is arranged in the lampshade, described power line attachment plug, described ac/ac power converter is arranged in the lampshade, the ac input end of described ac/ac power converter connects described power line, described ac/ac power converter dc output end is electrically connected with the LED lamp, it is characterized in that, described LED lamp plate is provided with overcurrent protection, described overcurrent protection comprises current transformer, sampled rectifier circuit, and signal processing circuit, described sampled rectifier circuit comprises the shunt of at least four group rectification circuits and at least three current transformers; Two commutation diodes of every group of rectification circuit minute route are in series; One of them output of the secondary side of three current transformers accesses respectively between one group of rectification circuit, two commutation diodes along separate routes; Another output is respectively through behind the sample resistance, and is in parallel with an end of a ground connection sample resistance; The other end of ground connection sample resistance is connected between a remaining rectification circuit two commutation diodes along separate routes, and described signal processing circuit is accessed respectively at the two ends of while three sample resistances and ground connection sample resistance.

Be provided with rectifier bridge and voltage changing module in the described ac/ac power converter, described voltage changing module is electrically connected with described rectifier bridge.

Useful technique effect of the present utility model is: the utility model is simple to operate, product different from the past (for example have time switch light fixture, have the light fixture of audio-switch), it directly reaches automatic startup by extraneous light power; And can remain in the weak scope of a brightness, can effectively avoid like this light to light for a long time and the power wastage that causes.

Description of drawings

Figure l is structural representation of the present utility model;

Fig. 2 is the schematic diagram of electron rectifier of the present utility model.

The specific embodiment

Below in conjunction with specific embodiment and Figure of description the utility model is further elaborated and illustrates:

Such as Fig. 1 or shown in Figure 2, a kind of LED light fixture with overcurrent protection, comprise lampshade 1, LED lamp plate 2, LED lamp 3, ac/ac power converter 5, power line 4 and plug 9, described LED lamp 3 is arranged on the LED lamp plate 2, described LED lamp plate 2 is arranged in the lampshade 1, described power line 4 attachment plugs 9, described ac/ac power converter 5 is arranged in the lampshade 1, the ac input end of described ac/ac power converter 5 connects described power line 4, described ac/ac power converter 5 dc output ends are electrically connected with the LED lamp, described LED lamp plate 2 is provided with overcurrent protection 8, described overcurrent protection 8 comprises current transformer, sampled rectifier circuit, and signal processing circuit, described sampled rectifier circuit comprises the shunt of at least four group rectification circuits and at least three current transformers; Two commutation diodes of every group of rectification circuit minute route are in series; One of them output of the secondary side of three current transformers accesses respectively between one group of rectification circuit, two commutation diodes along separate routes; Another output is respectively through behind the sample resistance, and is in parallel with an end of a ground connection sample resistance; The other end of ground connection sample resistance is connected between a remaining rectification circuit two commutation diodes along separate routes, and described signal processing circuit is accessed respectively at the two ends of while three sample resistances and ground connection sample resistance.

Be provided with rectifier bridge 7 and voltage changing module 6 in the described ac/ac power converter 5, described voltage changing module 6 is electrically connected with described rectifier bridge 7.

The described LED lamp 3 of present embodiment, because the interior integrated ac/ac power converter 5 of lampshade 1 can be converted into alternating current the direct current that capable for LED lamp 3 uses, LED can be connected on the civil power and directly use thus, use more conveniently, can take into account simultaneously the advantage of LED streetlamp energy-saving.

Claims

1. LED light fixture with overcurrent protection, comprise lampshade, the LED lamp plate, the LED lamp, ac/ac power converter, power line and plug, described LED lamp is arranged on the LED lamp plate, described LED lamp plate is arranged in the lampshade, described power line attachment plug, described ac/ac power converter is arranged in the lampshade, the ac input end of described ac/ac power converter connects described power line, described ac/ac power converter dc output end is electrically connected with the LED lamp, it is characterized in that: described LED lamp plate is provided with overcurrent protection, described overcurrent protection comprises current transformer, sampled rectifier circuit, and signal processing circuit, described sampled rectifier circuit comprises the shunt of at least four group rectification circuits and at least three current transformers; Two commutation diodes of every group of rectification circuit minute route are in series; One of them output of the secondary side of three current transformers accesses respectively between one group of rectification circuit, two commutation diodes along separate routes; Another output is respectively through behind the sample resistance, and is in parallel with an end of a ground connection sample resistance; The other end of ground connection sample resistance is connected between a remaining rectification circuit two commutation diodes along separate routes, and described signal processing circuit is accessed respectively at the two ends of while three sample resistances and ground connection sample resistance.

2. the LED light fixture with overcurrent protection according to claim 1, it is characterized in that: be provided with rectifier bridge and voltage changing module in the described ac/ac power converter, described voltage changing module is electrically connected with described rectifier bridge.