CN201269435Y

CN201269435Y - LED light tube

Info

Publication number: CN201269435Y
Application number: CNU2008201661073U
Authority: CN
Inventors: 许国永; 阮峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-14
Filing date: 2008-10-14
Publication date: 2009-07-08
Anticipated expiration: 2018-10-14

Abstract

The utility model discloses an LED light tube which comprises LEDs and a circuit board that is used for arranging the LEDs, wherein, at least three LED rows are arranged on the circuit board, the height of one or more LED rows in the middle position is higher than the height of the LEDs at two sides, a reflecting panel is arranged on the circuit board, and the LEDs are fixed on the circuit board by the reflecting panel. By increasing light-transmitting area, the LED light tube increases not only lighting intensity, but also lighting scope, and further improves the performance of the LED light tube essentially. Furthermore, the middle stepped structure of the LED light tube is favorable for air ventilation, and most part of heat generated by the LEDs is brought away by air, thus having prolonged service life.

Description

A kind of LED fluorescent tube

Technical field

The utility model relates to a kind of LED fluorescent tube.

Background technology

Today advocating development conservation-minded society, there is increasing family to bring into use the energy-conserving product relevant with LED.Especially in the lighting field, the utilization of LED technology is very extensive, the fluorescent lamp that useful LED does, desk lamp, street lamp etc.The LED light fixture has the advantage of the high and low power consumption of brightness.The luminous component of LED light fixture mainly is made up of the circuit board of LED and installation LED in the prior art, and LED is arranged on the circuit board regularly, and there is the lower shortcoming of intensity of illumination in LED light fixture of the prior art.For example at disclosed Chinese patent on June 4th, 2008, notification number is to disclose a kind of LED fluorescent tube in the patent of CN201069072Y, described fluorescent tube is made up of heat dissipating housing and diffuser, be provided with the draw-in groove that is used for fixing the bar-shaped LED lamp bar in the heat dissipating housing, described bar-shaped LED lamp bar by pcb board or MCPCB plate and be welded on pcb board or the MCPCB plate on LED form, this bar-shaped LED lamp bar one end is welded with a bridge rectifier module, comes the electric energy that electron rectifier is supplied with in the rectification fluorescence lamp bracket by this bridge rectifier module.Only be provided with the LED of row's same size on the LED lamp bar of LED fluorescent tube, the intensity of illumination that can reach during use is very limited.

Again for example at disclosed Chinese patent on April 30th, 2008, notification number is to disclose a kind of LED energy-saving daylight lamp that is applicable to illumination in the patent of CN201053595Y.In transparent fluorescent tube, be provided with circuit board.On circuit board, be provided with a plurality of LED lamps.The positive pole of LED bulb is serially connected in an end of current-limiting resistance, the other end of current-limiting resistance is connected in series with an end of filter capacitor, the other end of filter capacitor is connected with the negative pole of LED bulb and is formed a loop, two ends with filter capacitor are connected on the rectifier then, rectifier are received on the daily AC power again.This LED energy-saving daylight lamp relatively can be known in a structure and an above-mentioned patent, what this patent adopted is that two row LED are as light source, though intensity of illumination increases, its illuminance does not still reach the illumination intensity of common fluorescent lamp, and heat dispersion is poor, optical attenuation is bigger.

In order to increase intensity of illumination to greatest extent, make the brightness of LED fluorescent tube can be similar to common fluorescent lamp, at disclosed Chinese patent on September 3rd, 2008, notification number is to disclose a kind of surface-pasted LED fluorescent lamp in the patent of CN101255977A, it comprises the glass lamp of both ends open, two end caps that are assembled together with the glass lamp two ends respectively, two conductive electrodes that are assembled together with each end cap, circuit board, the LED of constant-flow driver and several SMD types, circuit board is axial setting in glass lamp, the circuit board two ends are assembled together with the end cap that is positioned at the glass lamp two ends respectively, constant-flow driver is installed in back of circuit board, the LED of several SMD types is installed on the circuit board, and circuit board is electrically connected with conductive electrode by constant-flow driver.This LED fluorescent lamp has stronger heat dispersion, and shortcoming is that the height of each LED is all identical, and LED adjacent during work blocks the light that the other side sends mutually, because the unreasonable structure intensity of illumination is still limited to.

The utility model content

The technical problems to be solved in the utility model provides a kind of rational in infrastructure, and glazed area is big, the LED fluorescent tube of illumination good brightness.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: the circuit board that this LED fluorescent tube comprises LED and is used to install LED, at least be provided with the LED that three row's head and the tail disconnect on the described circuit board, the height of a row or multi-row LED that is positioned at the centre position is greater than the LED height that is positioned at both sides, described circuit board is provided with reflector, and described LED is fixed on circuit board by reflector.

As of the present utility model preferred, this LED fluorescent tube comprises three row LED, and the height of a middle row LED is greater than the height of its next door two row LED.The light that sends once row LED thus can not arranged LED by next door two and not stop, thereby has increased the intensity of illumination of LED fluorescent tube.This structure can make the illumination range that enlarges the LED fluorescent tube simultaneously, because the structure that each LED is highly identical relatively can be known, row LED highly increases and just is equivalent to increase glazed area in the middle of this LED fluorescent tube, and the transparent surface that increases is slightly curved, so increased the illumination range of LED fluorescent tube.

As of the present utility model preferred, adjacent row LED dislocation is arranged.Guaranteed so can not interfere with each other between each LED, and then the light that any one LED is sent is not stopped by contiguous LED.And the easier heat radiation of dislocation arrangement, make prolong the service life of LED fluorescent tube.

As of the present utility model preferred, this LED fluorescent tube comprises four row LED, and the height of middle two row LED is all arranged the height of LED greater than the outside two.The structure of this structure and three row LED is similar, but the intensity of illumination of obvious four row LED is much bigger, and has the structure that increases glazed area equally, therefore also can reach the effect that increases illumination range.

As of the present utility model preferred, in order to simulate common fluorescent lamp uniform bright situation when luminous, the height of middle two row LED is identical.

As of the present utility model preferred, this LED fluorescent tube comprises five row LED, and the height of a middle row LED is greater than the height of the two row LED that are adjacent, and the height of the two row LED that described and middle row LED is adjacent are all greater than the height of outermost two row LED.This structure is respectively to increase the highly lower LED of a row on the basis of three row's LED structures again in both sides, so the intensity of illumination of this structure and illumination range all be improved, and performance is more superior.

As of the present utility model preferred, in order to simulate common fluorescent lamp uniform bright situation when luminous, described and middle row LED adjacent two to arrange the height of LED identical.

As of the present utility model preferred, this LED fluorescent tube comprises six row LED, and middle two height of arranging LED are all greater than the height of the two row LED that are adjacent, and the height of the two row LEDs adjacent with middle two row LED is all arranged the height of LED greater than outermost two.This structure is respectively to increase the highly lower LED of a row on the basis of four row's LED structures again in both sides, so the intensity of illumination of this structure and illumination range all be improved, and performance is more superior.

As of the present utility model preferred, in order to simulate common fluorescent lamp uniform bright situation when luminous, the height of described centre two row LED is identical.

As of the present utility model preferred, in order to simulate common fluorescent lamp uniform bright situation when luminous, the height of the two row LEDs adjacent with middle two row LED is identical equally.

The utility model adopts technique scheme: the LED fluorescent tube has not only increased intensity of illumination by increasing glazed area, has also increased illumination range, and then from having promoted the performance of LED fluorescent tube in essence.Its centre of LED fluorescent tube is step-like structure and also helps circulation of air, the heat that most of LED sends is taken away by air, so obtained service life prolonging.

Description of drawings

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

Fig. 1 is first kind of example structure schematic diagram of a kind of LED fluorescent tube of the utility model;

Fig. 2 is second kind of example structure schematic diagram of a kind of LED fluorescent tube of the utility model;

Fig. 3 is the third example structure schematic diagram of a kind of LED fluorescent tube of the utility model;

Fig. 4 is the 4th a kind of example structure schematic diagram of a kind of LED fluorescent tube of the utility model.

The specific embodiment

First kind of embodiment of the utility model, as shown in Figure 1, the circuit board 2 that this LED fluorescent tube comprises LED 1 and is used to install LED 1, on circuit board 2, be provided with three row LED 1, and curved reflector 3, this reflector 3 is fixed on the circuit board 2, and is positioned at the pin place of LED 1.Reflector 3 reflects the light that LED 1 disperses within the specific limits, and then improves the brightness of LED fluorescent tube on certain one side.The height of a middle row LED 1 is greater than the height of its next door two row LED 1, and the height of next door two row LED 1 is identical; LED 1 dislocation on the adjacent row is arranged.And then three row LED, 1 formation of this LED fluorescent tube has only the trapezoidal of two height.

Second kind of embodiment of the utility model, as shown in Figure 2, this LED fluorescent tube has comprised LED 1 and the circuit board 2 that is used to install LED 1 equally, on circuit board 2, be provided with four row LED 1, and curved reflector 3, this reflector 3 is fixed on the circuit board 2, and is positioned at the pin place of LED 1.Reflector 3 reflects the light that LED 1 disperses within the specific limits, and then improves the brightness of LED fluorescent tube on certain one side.The height of two middle row LED 1 is identical, and their height is all greater than the height of the outside two row LED 1, and the height of the outside two row LED 1 is identical.And then four row LED 1 of this LED fluorescent tube also form and have only the trapezoidal of two height.

The third embodiment of the utility model, as shown in Figure 3, this LED fluorescent tube has comprised LED 1 and the circuit board 2 that is used to install LED 1 equally, on circuit board 2, be provided with five row LED 1, and curved reflector 3, this reflector 3 is fixed on the circuit board 2, and is positioned at the pin place of LED 1.Reflector 3 reflects the light that LED 1 disperses within the specific limits, and then improves the brightness of LED fluorescent tube on certain one side.The height of a middle row LED 1 is greater than the height of the two row LED1 that are adjacent, and the height of the two row LEDs 1 adjacent with centre row LED 1 are all greater than the height of outermost two row LED 1; The height of the two row LEDs 1 adjacent with centre row LED 1 is identical; And the height of the outside two row LED 1 is identical.And then five row LED, 1 formation of this LED fluorescent tube has only the trapezoidal of three height.

The 4th kind of embodiment of the utility model, as shown in Figure 4, this LED fluorescent tube has comprised LED 1 and the circuit board 2 that is used to install LED 1 equally, on circuit board 2, be provided with six row LED 1, and curved reflector 3, this reflector 3 is fixed on the circuit board 2, and is positioned at the pin place of LED 1.Reflector 3 reflects the light that LED 1 disperses within the specific limits, and then improves the brightness of LED fluorescent tube on certain one side.Identical and their height of the height of middle two row LED 1 is all greater than the height of the two row LED 1 that are adjacent, and the height of the two row LEDs 1 adjacent with middle two row LED 1 are all greater than the height of outermost two row LED 1; The height of the two row LEDs 1 adjacent with middle two row LED 1 is identical; And the height of the outside two row LED 1 is identical.And then six row LED 1 of this LED fluorescent tube also form and have only the trapezoidal of three height.

Every row LED 1 is that head and the tail disconnect in the foregoing description, is vertical bar shape or crooked shape; LED fluorescent tube in the foregoing description all realizes increasing the purpose of glazed area by the LED lamp of row in the middle of increasing, and then reaches the effect that increases intensity of illumination and increase illumination range.Therefore when seven rows, eight rows or more row LED, can use for reference the purpose that the foregoing description is realized increasing intensity of illumination and increased illumination range.

Claims

1, a kind of LED fluorescent tube, the circuit board (2) that it comprises LED (1) and is used to install LED (1), at least be provided with three row LED (1) on the described circuit board (2), it is characterized in that: be positioned at the centre position a row or multi-row LED (1) height greater than the LED that is positioned at both sides (1) highly, described circuit board (2) is provided with reflector (3), and described LED (1) is fixed on circuit board (2) by reflector (3).

2, according to the described LED fluorescent tube of claim 1, it is characterized in that: this LED fluorescent tube comprises three row LED (1), and the height of a middle row LED (1) is greater than the height of its next door two row LED (1).

3, according to the described LED fluorescent tube of claim 2, it is characterized in that: adjacent row LED (1) arrangement that misplaces.

4, according to the described LED fluorescent tube of claim 1, it is characterized in that: this LED fluorescent tube comprises four row LED (1), and the height of middle two row LED (1) is all arranged the height of LED (1) greater than the outside two.

5, according to the described LED fluorescent tube of claim 4, it is characterized in that: the height of middle two row LED (1) is identical.

6, according to the described LED fluorescent tube of claim 1, it is characterized in that: this LED fluorescent tube comprises five row LED (1), the height of a middle row LED (1) is greater than the height of the two row LED (1) that are adjacent, and the height of described two row LEDs (1) adjacent with middle row LED (1) are all greater than the height of outermost two row LED (1).

7, according to the described LED fluorescent tube of claim 6, it is characterized in that: the height of the two row LED (1) that described and middle row LED (1) is adjacent is identical.

8, according to the described LED fluorescent tube of claim 1, it is characterized in that: this LED fluorescent tube comprises six row LED (1), middle two height of arranging LED (1) are all greater than the height of the two row LED (1) that are adjacent, and the height of the two row LEDs (1) adjacent with middle two row LED (1) is all arranged the height of LED (1) greater than outermost two.

9, described according to Claim 8 LED fluorescent tube is characterized in that: the height of described centre two row LED (1) is identical.

10, described according to Claim 8 LED fluorescent tube is characterized in that: the height of the two row LEDs (1) adjacent with middle two row LED (1) is identical.