CN222736343U - A low voltage variable light downlight source - Google Patents

Abstract

The utility model discloses a low-voltage dimming cylinder light source which comprises a light source plate, wherein a plurality of constant-current light source chips, a plurality of dimming light source chip sets, a rectifier bridge, a driving chip and a low-voltage power input bonding pad are arranged on the light source plate, the low-voltage power input bonding pad is electrically connected with the input end of the rectifier bridge, the anode of the plurality of constant-current light source chips is electrically connected with the output end of the rectifier bridge after being connected in parallel, the cathode of the plurality of constant-current light source chips is electrically connected with the anode of the dimming light source chip set after being connected in parallel, and the cathode of the constant-current light source chips and the cathode of the dimming light source chip set are respectively connected to different pins of the driving chip. The LED lighting device is reasonable in structural arrangement, is connected with external low-voltage power supply through the low-voltage power supply input bonding pad, can realize constant-current lighting through the light-changing light source chip set matched with the constant-current light source chip, can realize light-changing lighting, is beneficial to improving lighting effect, can improve use safety, reduces processing cost, prolongs service life, and is high in applicability and good in practicability.

Description

Low-voltage dimming cylinder light source

Technical Field

The utility model belongs to the technical field of down lamps, and particularly relates to a low-voltage dimming down lamp light source.

Background

The down lamp is a common decoration and illumination structure, and is generally composed of a down lamp shell, a light source plate and a lens panel, wherein a down lamp light source plate in the prior art mostly adopts a high-voltage fit driving power supply, and the down lamp light source plate can meet the use requirement of common conditions, but cannot realize the effect of low-voltage dimming, so that the use safety can be influenced to a certain extent, meanwhile, the use cost can be increased, the light effect is lower, and the applicability and the practicability are limited.

Disclosure of utility model

The utility model aims to provide a low-voltage dimming cylinder lamp light source which is reasonable in structural arrangement and high in light efficiency.

The technical scheme for realizing the aim of the utility model is that the low-voltage light-changing tube light source comprises a light source plate, wherein a plurality of constant current light source chips, a plurality of light-changing light source chip sets, a rectifier bridge, a driving chip and a low-voltage power input pad are arranged on the light source plate;

the low-voltage power supply input pad is electrically connected with the input end of the rectifier bridge;

The anodes of the constant current light source chips are electrically connected with the output end of the rectifier bridge after being connected in parallel, and the cathodes of the constant current light source chips are electrically connected with the anodes of the dimming light source chip set after being connected in parallel;

And the negative electrode of the constant current light source chip and the negative electrode of the dimming light source chip set are respectively connected to different pins of the driving chip.

It is further preferable that the light-changing light source chip set comprises a plurality of light-changing light source chip monomers connected in parallel.

It is further preferable that a plurality of mounting and positioning slots are formed in the edge of the light source plate.

It is further preferred that the light source plate is circularly arranged.

It is further preferred that a resistor and a capacitor are welded on the light source board.

It is further preferable that the number of the constant current light source chips is five;

The light source changing chip set is arranged in the middle of the light source plate, and the constant current light source chip is arranged on the periphery of the light source plate.

The LED lighting device has the advantages that the LED lighting device is reasonable in structural arrangement, is connected with external low-voltage power supply through the low-voltage power supply input bonding pad, can realize constant-current lighting through the light-changing light source chip set matched with the constant-current light source chip, can realize light-changing lighting, is beneficial to improving lighting effect, can improve use safety, reduces processing cost, prolongs service life, and is high in applicability and good in practicability.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:

FIG. 1 is a schematic diagram of a circuit board structure according to the present utility model;

fig. 2 is a schematic diagram of a specific circuit structure of the present utility model.

The LED lamp comprises a light source board 1, a constant current light source chip 2, a dimming light source chip set 3, a rectifier bridge 4, a driving chip 5, a low-voltage power input pad 6 and an installation positioning slot 7.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1 to 2, a low-voltage dimming cylinder light source comprises a light source board 1, a plurality of constant current light source chips 2 are distributed on the light source board, specifically, a plurality of dimming light source chip sets 3, a rectifier bridge 4, a driving chip 5 and a low-voltage power input pad 6 in fig. 1 and 2, wherein in this embodiment, the dimming light source chip sets comprise a plurality of dimming light source chip monomers connected in parallel. The light source board is a conventional PCB board, and the rectifier bridge and the driving chip are also structures of conventional models in the prior art, so that the light source board is simply applied, and meanwhile, the constant current light source chip and the variable light source chip are also conventional applications in the prior art, so that the light source board is not described in detail.

During welding, the input bonding pad of the low-voltage power supply is electrically connected with the input end of the rectifier bridge, the anodes of the constant-current light source chips are electrically connected with the output end of the rectifier bridge after being connected in parallel, the cathodes of the constant-current light source chips and the cathodes of the dimming light source chip set after being connected in parallel are electrically connected with the anodes of the dimming light source chip set, and the cathodes of the constant-current light source chips and the cathodes of the dimming light source chip set are respectively connected to different pins of the driving chip. The low-voltage power supply input pad can be connected with external low-voltage power supply, so that the use safety can be improved, constant-current illumination and variable-light illumination can be realized, the illumination requirements of different conditions are met, and the practicality is high.

Meanwhile, in the practical application process, in order to improve the convenience and the installation stability of installation, a plurality of installation positioning slots 7 are formed in the edge of the light source plate. The light source plate is circular. And a resistor R and a capacitor C are welded on the light source plate.

In the practical application process, the number of the constant current light source chips is five, namely U1-U5, the light-changing light source chip set is arranged in the middle of the light source plate, and the constant current light source chips are arranged on the periphery of the light-changing light source chip set of the light source plate. As shown in fig. 1, the constant current light source chip can meet the constant current lighting requirement, and the dimming light source chip is arranged in the middle part, so that the middle part dimming lighting can be realized.

The LED lighting device has the advantages that the LED lighting device is reasonable in structural arrangement, is connected with external low-voltage power supply through the low-voltage power supply input bonding pad, can realize constant-current lighting through the light-changing light source chip set matched with the constant-current light source chip, can realize light-changing lighting, is beneficial to improving lighting effect, can improve use safety, reduces processing cost, prolongs service life, and is high in applicability and good in practicability.

The standard components used in this embodiment may be purchased directly from the market, but the nonstandard structural components described in the specification may also be obtained directly by unambiguous processing according to the common general knowledge in the prior art, and meanwhile, the connection manner of each component adopts the conventional means mature in the prior art, and the machinery, the components and the equipment all adopt the conventional types in the prior art, so that no specific description will be made here.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While those obvious variations or modifications which come within the spirit of the utility model remain within the scope of the utility model.

Claims (5)

1. The low-voltage dimming cylinder light source comprises a light source plate and is characterized in that a plurality of constant current light source chips, a plurality of dimming light source chip sets, a rectifier bridge, a driving chip and a low-voltage power input pad are arranged on the light source plate;

the low-voltage power supply input pad is electrically connected with the input end of the rectifier bridge;

The anodes of the constant current light source chips are electrically connected with the output end of the rectifier bridge after being connected in parallel, and the cathodes of the constant current light source chips are electrically connected with the anodes of the dimming light source chip set after being connected in parallel;

the negative electrode of the constant current light source chip and the negative electrode of the dimming light source chip set are respectively connected to different pins of the driving chip;

the variable light source chip set comprises a plurality of variable light source chip monomers which are connected in parallel.

2. The low-voltage dimming cylinder light source of claim 1, wherein a plurality of mounting and positioning slots are formed in the edge of the light source plate.

3. A low voltage dimming cylinder light source as claimed in claim 1, wherein the light source plate is circular.

4. The low voltage dimming cylinder light source as claimed in claim 1, wherein a resistor and a capacitor are further welded on the light source board.

5. The low-voltage dimming cylinder light source according to claim 1, wherein the number of the constant-current light source chips is five;

The light source changing chip set is arranged in the middle of the light source plate, and the constant current light source chip is arranged on the periphery of the light source plate.