CN201259183Y

CN201259183Y - LED fluorescent lamp and illuminating apparatus

Info

Publication number: CN201259183Y
Application number: CNU2008202008811U
Authority: CN
Inventors: 孙奕斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-23
Filing date: 2008-09-23
Publication date: 2009-06-17
Anticipated expiration: 2018-09-23

Abstract

The utility model relates to the illuminating field and discloses an LED fluorescent light as well as an illuminating apparatus. The LED fluorescent light comprises current electrodes and at least two parallel-connection sets which are connected in series between the current electrodes. Each parallel-connection set consists of at least two LEDs. The LED fluorescent light can avoid the situation that other LEDs fails to illuminate only because of the damage of one LED; moreover, the LED fluorescent light has much lower cost.

Description

LED fluorescent lamp and lighting device

Technical field

The utility model relates to lighting field, relates in particular to a kind of lighting device.

Background technology

Advantages such as the LED fluorescent lamp is low owing to its energy consumption, environmental protection are widely used day by day.The LED fluorescent lamp is arranged on the circuit board and is formed by a plurality of light emitting diodes (light-emitting diode is called for short LED).

Syndeton is as shown in Figure 1 adopted in the connection of each LED in the LED fluorescent lamp at present usually: each LED employing string-and be formed by connecting.Its connection is specific as follows:

The input power supply 101,102 between and be connected with m series connection group, each series connection group is made up of n LED.Under the normal power supply state, input voltage V0 is added on each series connection group, and electric current flows through from each series connection group, gives each LED power supply, and each LED is luminous and realize illumination.

But, adopt syndeton shown in Figure 1, when wherein some LED damages and can not be luminous the time, the circuit of its place series connection group disconnects, and causes all the LED cisco unity malfunctions in this series connection group, on the LED fluorescent lamp, show as one section dark space, influence user's use experience greatly.

And, when causing the circuit disconnection of this series connection group when the LED of a certain series connection group damage, because the supply voltage V0 of power supply is constant, the former electric current that should flow through this series connection group is divided to other series connection group, causes the electric current of other series connection groups to strengthen greatly, makes the power of each LED of other series connection groups substantially exceed its specified power, the long-term use, make it be more prone to damage service life that can infringement LED, thus form pernicious follow bad.

Damage and cause all LED in the series connection group at its place can not normally shinny problem in order to overcome certain LED in the LED fluorescent lamp, people have proposed another kind of LED syndeton, this syndeton as shown in Figure 2:

Structure shown in Figure 2 is with respect to syndeton shown in Figure 1, and institute's difference is:

At the two ends of each light emitting diode Dmn breakdown diode dmn in parallel, when certain LED damages, the breakdown diode dmn in parallel with it is owing to the effect of both end voltage punctures, this breakdown diode dmn is communicated with, electric current is flow through from this breakdown diode dmn, make this series connection group continue to have electric current to flow through, other LED in this series connection group continue luminous.

When certain LED damages, on the LED fluorescent lamp, show as a dim spot rather than one section dark space.

As seen use syndeton shown in Figure 2, can solve certain LED and damage and cause all LED in the series connection group at its place can not normally shinny problem, user's result of use be preferable.

But, use structure shown in Figure 2, need be each LED breakdown diode in parallel, part and manufacturing cost are higher, are unfavorable for promoting on industry.

The utility model content

The utility model embodiment provides a kind of LED fluorescent lamp, can avoid certain LED to damage and the situation that causes other LED not work, and its cost is more cheap.

The utility model embodiment provides a kind of lighting device, can avoid certain luminous component to damage and the situation that causes other luminous component not work, and its cost is more cheap.

The LED fluorescent lamp that the utility model embodiment provides comprises: current electrode, between current electrode, be in series with at least two and joint group, and each group in parallel is made up of at least two light emitting diodes respectively.

Optionally, between current electrode, be in series with 36 and joint group.

The lighting device that the utility model embodiment provides comprises: comprising: current electrode, between current electrode, be in series with at least two and joint group, and each group in parallel is made up of at least two luminous components respectively.

Therefore, use the technical scheme of the utility model embodiment, when certain luminous component (such as LED) when being damaged, electric current can flow through from other luminous components in the also joint group at this luminous component place, and flow to next and joint group, give other luminous component power supplies in the circuit, it is normally luminous to make that other luminous components continue.As seen, use technical solutions of the utility model and can avoid certain luminous component damage and cause other luminous component not work, the situation of dark space expanded range,

And, use the technical program, when certain luminous component damages, have only the electric current that under normal circumstances flows through this damage luminous component to be diverted to other luminous components, the electric current of shunting is less, the actual power that therefore can not cause other luminous components is much larger than rated power, and influences the service life of other luminous components, forms vicious circle.

And, use the technical program, do not need additionally to increase other accessory, so it is cheap for manufacturing cost, help industry and promote.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute to improper qualification of the present utility model, in the accompanying drawings:

Fig. 1 is the syndeton schematic diagram of a kind of LED fluorescent lamp of the prior art;

Fig. 2 is the syndeton schematic diagram of another kind of LED fluorescent lamp of the prior art;

The syndeton schematic diagram of a kind of LED fluorescent lamp that Fig. 3 provides for the utility model embodiment 1;

The syndeton schematic diagram of a kind of lighting device that Fig. 4 provides for the utility model embodiment 2.

The specific embodiment

Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.

Embodiment 1:

The syndeton schematic diagram of a kind of LED fluorescent lamp that Fig. 1 provides for embodiment, as shown, this LED fluorescent lamp comprises: current electrode 301,302 is in series with at least two and joint group between current electrode 301,302: also joint group 1 and joint group 2 and joint group n among the figure;

Each group in parallel is made up of at least two light emitting diodes respectively: each also is made up of m light emitting diode in the joint group among the figure.Such as: and joint group 40n by: light emitting diode Dn1, Dn2......Dnm form.

Wherein, above-mentioned m, n is respectively the natural number greater than 1.

Such as: can between current electrode 301,302, be in series with 36 and joint group.

According to the rated power of each LED of this LED fluorescent lamp and the power supply input that connects the current electrode 301,302 of determining to be input to the LED fluorescent lamp, make the power supply input can make each LED fluorescent lamp be operated in rated voltage.

Therefore the annexation of each LED in the LED fluorescent lamp of present embodiment adopts the mode of back in parallel earlier series connection.When certain LED was damaged, electric current can flow through from other LED in the also joint group at this LED place, and flows to next also joint group, and other LED in the circuit still have electric current to flow through, and other LED are normally luminous.As seen, using technical solutions of the utility model can avoid certain LED to damage and the situation that causes other LED not work.

And application the technical program, when certain LED damages, have only the electric current that under normal circumstances flows through this damage LED to be diverted to other LED, the electric current of shunting is less, therefore can not cause the actual power of other LED much larger than rated power, and influence service life of other LED, form vicious circle.

Embodiment 2:

The syndeton schematic diagram of a kind of lighting device that Fig. 4 provides for present embodiment, as shown, this LED fluorescent lamp comprises: current electrode 401,402, between current electrode 401,402, be in series with at least two and joint group, referring to also joint group 401 and joint group 402 and the joint group 40n among the figure, each group in parallel is made up of at least two luminous components respectively, and each also is made up of m luminous component in the joint group among the figure.Such as: and joint group 40n by: luminous component Ln1, Ln2......Lnm form.

Wherein, above-mentioned m, n is respectively the natural number greater than 1.Wherein above-mentioned luminous component can but be not limited to: the luminous component of bulb or fluorescent tube or other colours or black and white.

According to the rated power of each luminous component of this lighting device and connect the power supply input of determining to be input to current electrode two ends 401,402, make the power supply input can make each luminous component be operated in rated voltage.

The annexation of each luminous component in the lighting device of present embodiment adopts the mode of back in parallel earlier series connection.When certain luminous component was damaged, electric current can flow through from other luminous components in the also joint group at this luminous component place, and flows to next also joint group, and other luminous components in the circuit still have electric current to flow through, and are normally luminous.As seen, using technical solutions of the utility model can avoid certain luminous component to damage and the situation that causes other luminous component not work.

And application the technical program, when certain luminous component damages, have only the electric current that under normal circumstances flows through this damage luminous component to be diverted to other luminous components, the electric current of shunting is less, therefore can not cause the actual power of other luminous components much larger than rated power, and influence service life of other luminous components, form vicious circle.

Use the technical scheme of present embodiment in the present figure lamp decoration of being made up of a plurality of luminous components, display effect is better: when certain luminous component damage does not work, the dark space scope further can not enlarged, help reducing user's degree visually impaired.

Above-mentioned luminous component can but be not limited to fluorescent lamp, incandescent lamp, incandescent lamp tube, LED etc.

More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the embodiment of the utility model embodiment are set forth, the explanation of above embodiment just is used to help to understand the principle of the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as restriction of the present utility model.

Claims

1, a kind of LED fluorescent lamp is characterized in that, comprising: current electrode, between current electrode, be in series with at least two and joint group, and each group in parallel is made up of at least two light emitting diodes respectively.

2, LED fluorescent lamp according to claim 1 is characterized in that, is in series with 36 and joint group between current electrode.

3, a kind of lighting device is characterized in that, comprising: current electrode, between current electrode, be in series with at least two and joint group, and each group in parallel is made up of at least two luminous components respectively.