标签：soft LED bars

Nine advantages of soft LED bars

1)       Pure light: soft LED bars used high-brightness SMD LED chips as light-emitting components, which have all the advantages of LED lamps: pure and soft light, no flares, no infrared rays and ultraviolent rays and no flickers. This kind of LED lighting products can be used for decoration purpose (normally in gardens and on cars).

 

1) Pure light: soft LED bars used high-brightness SMD LED chips as light-emitting components, which have all the advantages of LED lamps: pure and soft light, no flares, no infrared rays and ultraviolent rays and no flickers.

 

2)       Softness. Soft LED bars used FPC as substrates, which have a high level of flexibility, can be bent in to any angles without breaking, easy to mode, suitable for modeling various advertising and decoration applications.

3)       Less heat radiation. The lighting source of soft LED bars is single LED chip, which generate negligible thermal energy. Normally, the power consumption of single LED chip is around 0.04-0.08W. Thus all LED bar applications have two common properties: low power and low heat radiation. Some low-power LED bars without any cooling sections can be used in fish tanks as aquarium lamps.

4)       Energy saving. 1210 is a model of LED bars, the power consumption of which is only 4.8W per meter. 5050 LED bars have an average power consumption of 7.2W per meter. Compared with traditional decorated LED lighting products, LED bars are much more powerful in energy saving.

5)       Environmental friendly. Neither lamp bodies nor FPCs are health-hazard. Non-toxic recycling available materials were applied. Extensive use will not cause environmental pollution and destruction.

6)       More safe. LED bars work under 12VDC, which can be directly used in houses without any protect circuits or electricity-proof shells.

7)       Easy installation: the installation is relatively easy for soft LED bars. Equipped with fixing clips, iron wires, iron nets, can be installed in multiple supporting faces. Besides, LED bars are light and thin, which made the simpler double-sided tapes are also available for fixing them. The installation and operation of LED bars need no veterans. Customers could really enjoy the fun of DIY.

8)       Long life: the normal service life of soft LED bars is around 80000 – 100000 hours. That means they can maintain a normal constant work for 10 years. However, it is just a theoretical value.

9)       Wide range of applications. Soft LED bars can be used in many places: building outline lighting, booth lighting, bridge lighting, restaurant and hotel lighting, KTV decorating lighting and billboards lighting.

How to solve the cooling problem of soft LED bars?

1)       Circuit design. The commonly used input voltages of LED bars are 12VDC and 24VDC. Circuits worked under 12VDC are generally combinations of three series branches and multiple parallel branches, while circuit under 24VDC are combination of six series branches and multiple parallel branches. Since soft LED bars should be connected in series, the particular length of these bars all depends on the width of the circuit and the also the thickness of the copper foil. For the reason that the maximum current density per unit area is closed related to the cross section area (CSA), we have to take this point into account during the wiring. Otherwise, soft LED bars will work in overheated conditions due to excessive current. It is cleared that LED lighting products are not sustainable in constant high working temperatures. It will cause unrecoverable damages to circuits and meanwhile reduce the service life of LED lights chips.

 

1) Circuit design. The commonly used input voltages of LED bars are 12VDC and 24VDC.

 

2)       Problems in production process. Since LED bars used series-parallel connections, failure of one branch will increase the input voltage in other branches. Under such circumstance, LED grow lights will send out brighter light, but in the meantime, generate more heat. The clearest example is 5050 soft LED bars. Short circuit in any one of the branch of 5050 bars will double the working current in other branches (from 20mA to 40mA). Users may observe an instant and obvious light enhancing and all together sharply increased working temperature. Circuit may probably be burned up with several minutes in server cases. However this fault is relatively obscure than other problems and hardly be discovered. If testing technicians only concern about whether LED chips work (sending out light) but pay no attention on whether LED chips work in a normal state (sending out normal brightness light), branch short circuit would be frequently occurred. That is the reason why most LED bar producers frequently received feedback from customers complained that their products were overheated and over-bright with unknown reasons.

Solutions:

1)       Increase the distance between wires on circuits as much as possible. It is proved that the ideal condition is larger than 0.5mm. Increase the thickness of copper foils without violating the customers’ requests. General thickness should be 1-1.5 OZ.

2)       Avoid short circuit during the patch.

3)       Double check the patch location before switching on.

4)       Performing electrical testing after switching on. Measuring the light intensity gradually.