A kind of LED eyeshield fluorescent tube
Technical field
The utility model relates to lighting technical field, is specially a kind of LED eyeshield fluorescent tube of anti-dazzle.
Background technology
LED has that the life-span is long, energy consumption is low, colour rendering is high and the advantage such as shock resistance is good, is called as electricity-saving lamp, is used widely.Traditional incandescent lamp is eliminated in many places, vigorously promotes the use LED electricity-saving lamp.But the direct light of LED causes dazzle, make people uncomfortable, under this illuminating lamp, study or work cause vision fatiguability, and can injure eyesight.
Each light fixture production firm is also being devoted to solve the glare problem of LED in recent years, and the most frequently used is reflecting cup structure, although the light of LED lamp can be made to become evenly soft, fails to solve the problem of LED direct projection dazzle.And can the luminous efficiency of large high attenuation LED through repeatedly diffuse reflection in light fixture, reduce the fractional energy savings of LED.And the more complicated cost too increasing light fixture of this structure.
In addition in the LED course of work, part electric energy is converted to heat energy, and LED light flux and temperature are inversely proportional to, and the life-span of LED is also inversely proportional to its operating temperature, so must reduce the environment temperature of LED work.Therefore an additional radiator on light fixture of having to, increase cost, also affect light fixture outward appearance.
Utility model content
The purpose of this utility model is a kind of LED eyeshield fluorescent tube of design, and about 75 ° ~ 90 °, the angle of cut of the side plate of the substrate connection of mounted LED lamp bulb, this structure makes the lighting angle of this LED lamp tube be less than or equal to 90 °, effectively reduces the dazzle that LED direct projection produces.
A kind of LED eyeshield fluorescent tube of the utility model design, the substrate comprising fixed installation LED lamp bead, 2 pieces of side plates, constant-current driving power supply, shells paralleling with supporting plate longitudinal edge, diffuser above substrate front side and be installed on the lamp holder at two ends, constant-current driving power supply is connected with the electric connection of lamp holder through wire with lamp pearl.
2 blocks of side plates are fixedly connected with two longitudinal edges of supporting plate respectively, and the elongated surfaces angle of cut of 2 blocks of side plates is 75 ° ~ 90 °, the width W of supporting plate
holderbe greater than the width W of side plate
side, W
holder/ W
side=1.4 ~ 1.6.
The substrate of fixed installation LED lamp bead is fixed on supporting plate, and described constant-current driving power supply is fixed on supporting plate bottom surface, is positioned at shell.
The shell at the described supporting plate back side is portion cylindrical sidewall, and cross section is circular arc, and the right central angle of circular arc is 180 ° ~ 200 °, the cylindrical wall of shell two on along being connected with the upper edge of side plate.
Described case surface has the straight burr wire drawing parallel with supporting plate, and the diameter of wire drawing is 0.2mm ~ 0.3mm, and the arc groove that adjacent wire drawing is formed is tangent.
Described diffuser is the arc diffuser of light transmittance 80% ~ 90% or flat diffuser, and diffuser both sides are connected with edge on side plate.
It is circular long cylinder that described arc diffuser and shell synthesize cross section, or flat diffuser and shell 8 synthesize the long cylinder that cross section is D shape, and lamp sleeve is at the two ends of described long cylinder.
Described substrate is the circuit board covering copper aluminium base or cover copper glass mat.
Described inner lining of casing plastic bushing, the bottom of plastic bushing connects with inner surface of outer cover, and top is plane, post and fix with supporting plate bottom surface and be connected, and described constant-current driving power supply is in plastic bushing, is fixed on plastic bushing top.Plastic bushing makes power supply and casing insulation, prevents outer casing electrification, and protection power source better.
The inner surface of described side plate is covered with reflector layer.
Overall aluminium section bar forms shell, the side plate of connected with outer casing and the supporting plate of connecting lateral plate.
Described constant-current driving power supply is the current constant control integrated circuit that PFC removes stroboscopic chip and coordinates with it, constant output current ripple-free.The stroboscopic of LED lamp tube is significantly reduced, is conducive to the vision health protecting user.
Compared with prior art, the advantage of a kind of LED eyeshield of the utility model fluorescent tube is: 1, the side plate elongated surfaces angle of cut is 75 ° ~ 90 °, makes the lighting angle of this fluorescent tube be equal to or less than 90 °, effectively reduces the dazzle that LED direct projection produces; 2, side plate and shell act as radiator, the heat that LED produces is delivered to shell through supporting plate, side plate, the wire drawing of the outer surface of shell increases area of dissipation, uses this fluorescent tube appearance maximum temperature lower than 60 DEG C in normal circumstances, ensure that normal work and the life-span of LED; 3, adopt the power supply of constant output current ripple-free, the stroboscopic of LED significantly reduces, and is conducive to the vision health protecting user; 4, power supply is arranged on below supporting plate, is enclosed in fluorescent tube by shell and plastic bushing, safe and reliable, and profile neat appearance; 5, the diffuser that light transmittance is less than 100% plays diffuse reflection effect to light, makes the light of this fluorescent tube evenly soft.
Accompanying drawing explanation
Fig. 1 is this LED eyeshield fluorescent tube embodiment 1 structural representation.
Fig. 2 is this LED eyeshield fluorescent tube embodiment 1 cross sectional representation.
Fig. 3 is this LED eyeshield fluorescent tube embodiment 2 cross sectional representation.
Number in the figure is: 1, diffuser, 2, side plate, 3, LED lamp bead, 4, substrate, 5, supporting plate, 6, constant-current driving power supply, 7, plastic bushing, 8, shell, 9, lamp holder.
Detailed description of the invention
LED eyeshield fluorescent tube embodiment 1
As illustrated in fig. 1 and 2,2 blocks of side plates 2 are fixedly connected with two longitudinal edges of supporting plate 5 structure of this LED eyeshield fluorescent tube embodiment 1 respectively, and the elongated surfaces angle of cut of 2 blocks of side plates 2 is 90 °, the width W of supporting plate 5
holderbe greater than the width W of side plate 2
side, W
holder/ W
side=1.5.The portion cylindrical sidewall of shell 8 for being greater than 1/2 at described supporting plate 5 back side, cross section is circular arc, and the right central angle of circular arc is 200 °, and two of the cylindrical wall of shell 8 upper along being connected with the upper edge of side plate 2.Aluminium section bar formation shell 8, the side plate 2 of connected with outer casing 8 and the supporting plate 5 of connecting lateral plate 2 that this example is overall.There is the straight burr wire drawing parallel with supporting plate 5 on this exception shell 8 surface, and the diameter of wire drawing is 0.25mm, and the arc groove that adjacent wire drawing is formed is tangent.This routine side plate 2 inner surface is covered with reflector layer
Plastic bushing 7 is inserted in shell 8, and the bottom of plastic bushing 7 connects with shell 8 inner surface, and top is plane, post and fix with supporting plate 5 bottom surface and be connected, and constant-current driving power supply 6 is in plastic bushing 7, is fixed on plastic bushing 7 top.The substrate 4 of fixed installation LED lamp bead 3 is fixed on supporting plate 5.This routine diffuser 1 is the arc diffuser of light transmittance 85%, and diffuser 1 both sides are connected with edge on side plate 2.It is circular long cylinder that arc diffuser 1 and shell 8 synthesize cross section, and lamp holder 9 is enclosed within the two ends of long cylinder, and constant-current driving power supply 6 is connected through the electric connection of wire with lamp holder 9 with lamp pearl 3.
The current constant control integrated circuit that the constant-current driving power supply 6 of this example removes stroboscopic chip for PFC and coordinates with it, constant output current ripple-free.Can ensure that this LED lamp tube is completely without stroboscopic.
LED eyeshield fluorescent tube embodiment 2
As shown in Figure 3, it adopts flat diffuser 1 to this LED eyeshield fluorescent tube embodiment 2, and diffuser 1 both sides are connected with edge on side plate 2.Flat diffuser 1 synthesizes with shell 8 the long cylinder that cross section is D shape, and lamp holder 9 is enclosed within the two ends of this long cylinder, and constant-current driving power supply 6 is connected through the electric connection of wire with lamp holder 9 with lamp pearl 3.Other structure is identical with embodiment 1.
Above-described embodiment, be only the specific case further described the purpose of this utility model, technical scheme and beneficial effect, the utility model is not defined in this.All make within scope of disclosure of the present utility model any amendment, equivalent replacement, improvement etc., be all included within protection domain of the present utility model.