CN103363320A - Led lamp and manufacturing method thereof - Google Patents

Abstract

An LED lamp comprises an upper shell, a lens, a drive circuit board and an LED. The upper shell is provided with an accommodating groove, and a light hole is formed at the bottom of the accommodating groove. The lens is accommodated in the accommodating groove and covers the light hole. A lower shell is provided with an electrical appliance groove, and one side, close to the opening of the electrical appliance groove, of the lower shell is fixedly connected with one side, close to the light hole, of the upper shell. The drive circuit board is accommodated in the electrical appliance groove. The LED is fixed onto the drive circuit board directly and opposite to the position of the light hole. The upper shell and the lens are respectively made of two plastic materials similar in the molecular structure, and the lens is made of transparent plastics. The lens is welded with the side wall of the accommodating groove by means of ultrasonic welding so as to have the opening of the accommodating groove sealed. Due to the fact that rubber seals easy to age after exposure in the sun are avoided being applied to the upper shell and the lens of the LED lamp, long term usage of the LED lamp is ensured, and leakproofness is especially good when the LED lamp is used outdoors. The invention further provides a manufacturing method of the LED lamp.

Description

LED light fixture and manufacture method thereof

[technical field]

The present invention relates to a kind of light fixture, particularly relate to a kind of LED light fixture and manufacture method thereof.

[background technology]

At present often machinery cooperation between the shell of light fixture and the Transparent Parts, reflector and Transparent Parts separately design and bring increasing of material simultaneously, so that the matching problem of lamp locker often affects the reliability of whole light fixture, once lost efficacy in the cooperation place, enter dust or the objects such as gas, liquid in the light fixture, can make the problems such as light fixture generation internal corrosion, thereby cause lamp lighting to lose efficacy, occur the problems such as security incident, bring huge loss for market and client.This problem often needs the designer to spend a lot of time and efforts to solve, and sometimes even again changes mould in the hope of reaching the purpose of cooperation place sealing.

See also Fig. 1, traditional LED light fixture 10 comprises upper casing 11, lower casing 12, reflector 13, Transparent Parts 14 and rubber seal 15, and upper casing 11 and lower casing 12 are fixed together by threaded engagement, and jointly form a host cavity (figure is mark).Upper casing 11 offers the light hole corresponding with host cavity.Reflector 13 and Transparent Parts 14 all are contained in the host cavity, and wherein Transparent Parts 14 is near the light hole setting of upper casing 11.Rubber seal 15 is coated on the periphery of reflector 13 light-emitting windows, and is connected between Transparent Parts 14 and the lower casing 12.When light fixture 10 during in outdoor application, because sunshine sees through Transparent Parts 14 long-term irradiation rubber seals 15, it is aging that glue seal 15 is accelerated, thereby cause LED light fixture 10 poor sealing.

[summary of the invention]

In view of above-mentioned condition, be necessary to provide a kind of sealing preferably LED light fixture and manufacture method thereof.

A kind of LED light fixture comprises:

Upper casing has accepting groove, and the bottom of described accepting groove offers loophole;

Lens are contained in the described accepting groove and hide described loophole;

Lower casing has the electrical equipment groove, and described lower casing is fixedly connected with the side of described upper casing near described loophole place near a side at the opening place of described electrical equipment groove, so that described loophole is connected with described electrical equipment groove;

Drive circuit board is contained in the described electrical equipment groove, and corresponding setting with described loophole; And

LED is directly fixed on the described drive circuit board, and is contained in the described loophole;

Wherein, described upper casing and lens are made by two kinds of similar plastic materials of molecular structure respectively, and described lens are made by transparent plastic; The mode of described lens by ultrasonic bonding directly links together with the sidewall melting of the accepting groove of described upper casing, to seal the opening of described accepting groove.

Among embodiment, the bottom of described electrical equipment groove is provided with fixed leg therein, and described drive circuit board is fixed on the described fixed leg.

Among embodiment, the free-ended end face of described fixed leg is provided with positioning boss therein, and described drive circuit board offers the locating hole that passes for described positioning boss.

Among embodiment, described upper casing is provided with locating dowel near a side at described loophole place therein, and described lower casing offers the locating slot of accommodating described locating dowel near a side correspondence at the opening place of described electrical equipment groove.

Therein among embodiment, described locating dowel is offered screw at its free-ended end face, the bottom of described locating slot offers the through hole that passes for threaded fastener, and described threaded fastener is screwed with the screw of described locating dowel and described upper casing is fixedly connected with described lower casing.

Among embodiment, described locating dowel is annular therein, and described locating slot be annular groove; Described light fixture also comprises sealing ring, and described sealing ring is contained in the locating slot, and arranges near the inboard of described locating slot; The free-ended end face of described locating dowel and described sealing ring butt.

Among embodiment, described lens have the arc exiting surface therein, and described arc exiting surface protrudes outside the described upper casing.

Among embodiment, the side that described lens are relative with described arc exiting surface is formed with boss therein, and described boss is contained in the described loophole.

Among embodiment, the bottom of described electrical equipment groove also is provided be used to the support column that supports described drive circuit board middle part therein.

A kind of manufacture method of LED light fixture comprises the steps:

Clamp head and the lower clamp head relative with described upper clamp head are provided, and described upper clamp head is used for the described lens of clamping, and described lower clamp head is used for the described upper casing of clamping;

Described upper clamp head moves towards described lower clamp head, until described lens are contained in the accepting groove of described upper casing; And

Adopt the contact position of the sidewall of the described lens of ultrasonic irradiation and described upper casing accepting groove, the contact position of sidewall of the accepting groove of described lens and described upper casing is welded together.

The upper casing of above-mentioned LED light fixture and lens are made by two kinds of similar plastic materials of molecular structure respectively, and adopt the ultrasonic bonding mode to be welded together, avoid adopting the rear rubber seal that wears out easily that is exposed to the sun, so that above-mentioned LED light fixture uses for a long time, particularly sealing is better when outdoor application.

[description of drawings]

Fig. 1 is the profile of traditional LED light fixture;

Fig. 2 is the stereogram of the LED light fixture of embodiment of the present invention;

Fig. 3 is the profile of LED light fixture shown in Figure 2;

Fig. 4 is the flow chart of the LED light fixture manufacture method of embodiment of the present invention;

Fig. 5 is for adopting LED light fixture manufacture method shown in Figure 4 to be fixedly connected with the lens of LED light fixture and the structural representation of upper casing.

[specific embodiment]

For the ease of understanding the present invention, the below is described more fully the present invention with reference to relevant drawings.Provided preferred embodiment of the present invention in the accompanying drawing.But the present invention can realize with many different forms, be not limited to embodiment described herein.On the contrary, provide the purpose of these embodiment be make the understanding of disclosure of the present invention more comprehensively thorough.

Need to prove that when element is called as " being fixed in " another element, can directly can there be element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be to be directly connected to another element or may to have simultaneously centering elements.Term as used herein " vertical ", " level ", " left side ", " right side " and similar statement are just for illustrative purposes.

Unless otherwise defined, the employed all technology of this paper are identical with the implication that belongs to the common understanding of those skilled in the art of the present invention with scientific terminology.Employed term is not intended to be restriction the present invention just in order to describe the purpose of specific embodiment in specification of the present invention herein.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.

See also Fig. 2 and Fig. 3, the LED light fixture 100 of embodiment of the present invention comprises upper casing 110, lens 120, lower casing 130, drive circuit board 140, LED 150 and sealing ring 160.

Upper casing 110 has accepting groove 111.The bottom of accepting groove 111 offers loophole 113.Upper casing 110 is provided with locating dowel 115 near a side at loophole 113 places.Locating dowel 115 is offered screw (figure is mark not) at its free-ended end face.Specifically in the present embodiment, locating dowel 115 is annular, and namely locating dowel 115 is around a week of loophole 113.

Lens 120 are contained in the accepting groove 111 of upper casing 110 and hide loophole 113.Specifically in the present embodiment, lens 120 have arc exiting surface 121, and when lens 120 are installed on the accepting groove 111 of upper casing 110 when interior, arc exiting surface 121 protrudes outside the upper casings 110, so that the light that LED 150 is sent is derived outside the upper casing 110, improve the irradiation brightness of LED light fixture 100.Lens 120 and arc exiting surface 121 relative sides are formed with boss 123, and boss 123 is contained in the loophole 113 of upper casing 110.

Wherein, upper casing 110 and lens 120 are made by two kinds of similar plastic materials of molecular structure respectively, and lens 120 are made by transparent plastic.The mode of lens 120 by ultrasonic bonding directly links together with the sidewall melting of the accepting groove 111 of upper casing 110, to seal the opening of accepting groove 111.

Lower casing 130 has electrical equipment groove 131.Lower casing 130 is fixedly connected with the side of upper casing 110 near loophole 113 places near a side at the opening place of electrical equipment groove 131, so that the loophole 113 of upper casing 110 is connected with the electrical equipment groove 131 of lower casing 130, the modes such as for example, lower casing 130 can connect by screw element, welding, engagement connection are fixedly connected with upper casing 110.Specifically in the present embodiment, upper casing 110 and lower casing 130 are circular shell, are roughly the fitting structure of patty with formation.

Lower casing 130 is provided with fixed leg 133 and support column 135 in the bottom of electrical equipment groove 131.Drive circuit board 140 is fixed on the fixed leg 133, and is concrete, and the free-ended end face of fixed leg 133 is provided with positioning boss 137, and drive circuit board 140 offers the locating hole (figure is mark not) that passes for positioning boss 137.Support column 135 is used for the middle part of support drive circuit board 140.Specifically in the present embodiment, in order to improve the sealing of electrical equipment groove 131 after sealing, fixed leg 133 is circular cylindrical shell, and positioning boss 137 is a plurality of, and the compartment of terrain is located on the free-ended end face of fixed leg 133.

One side at the opening place of lower casing 130 close electrical equipment grooves 131 is the corresponding locating slot 138 that offers the locating dowel 115 of accommodating upper casing 110 also.Specifically in the present embodiment, the bottom of locating slot 138 offers the through hole (figure is mark not) that passes for threaded fastener (figure is mark not), and threaded fastener is screwed with the screw of the locating dowel 115 of upper casing 110 and upper casing 110 is fixedly connected with lower casing 120.When locating dowel 115 was annular, locating slot 138 was the groove of annular, and namely locating slot 138 is around 133 1 weeks of fixed leg.

Drive circuit board 140 is contained in the electrical equipment groove 131 of lower casing 130, and with the loophole 113 corresponding settings of upper casing 110.

LED 150 is directly fixed on the drive circuit board 140, and is contained in the loophole 113 of upper casing 110.LED 150 can be for a plurality of, and it can be the modes such as annular, rectangular array and arrange.

Sealing ring 160 is contained in the locating slot 138 of lower casing 130, and arranges near the inboard of locating slot 138, and namely sealing ring 160 arranges near the fixed leg 133 of lower casing 130.The free-ended end face of the locating dowel 115 of upper casing 110 and sealing ring 160 butts form the annular seal space of accommodating drive circuit board 140 with sealing.

Need to prove that upper casing 110 and lower casing 130 all can adopt the relatively poor plastics of light transmission to make, to prevent that LED light fixture 100 sealing ring 160 when the outdoor application is exposed to the sun and aging easily.

The upper casing 110 of above-mentioned LED light fixture 100 and lens 120 are made by two kinds of similar plastic materials of molecular structure respectively, and adopt the ultrasonic bonding mode to be welded together, avoid adopting the rear rubber seal that wears out easily that is exposed to the sun, so that above-mentioned LED light fixture 100 uses for a long time, particularly sealing is better when outdoor application.

See also Fig. 4 and Fig. 5, the manufacture method of the LED light fixture of embodiment of the present invention, for the manufacture of above-mentioned LED light fixture 100, the method comprising the steps of S201～S203:

Step S201 provides clamp head 210 and the lower clamp head 220 relative with upper clamp head 210, and upper clamp head 210 is used for clamping lens 120, and lower clamp head 220 is for clamping upper casing 110.

Step S202, upper clamp head 210 moves towards lower clamp head 220, until lens 120 are contained in the accepting groove of upper casing 110.

Step S203, the contact position of the sidewall of the accepting groove 111 of employing ultrasonic irradiation lens 120 and upper casing 110 is welded together lens 120 and the contact position of the sidewall of the accepting groove 111 of upper casing 110.

Need to prove that lens 120 are longer with the length of the sidewall welding of the accepting groove 111 of upper casing 110, then lens 120 are more firm with the intensity that upper casing 110 is connected.

When adopting the similar thermoplastic of ultrasonic bonding molecular structure, such as ABS or PC, can be two kinds of good being welding together of shell of light fixture with ultrasonic welding process, in embodiments of the present invention, be used for the welding between lens and the upper casing, because lens-shape is simple, ultrasonic wave anchor clamps (namely going up clamp head 210 and lower clamp head 220) are easy to make, at the bottom of the cost.The hermetically-sealed construction of above-mentioned LED light fixture 100 is simple, and sealing property is very good, does not exist because of two kinds of bad protection questions that occur of materials cooperation.And the Transparent Parts of light fixture is lens, better reflection ray, do not need to add again reflector and reflect anti-line, the technique that Transparent Parts and reflector are united two into one so not only can reduce production technology and cost, can also improve the reliability of LED light fixture 100.And the Seal Design that adopts between traditional light fixture Transparent Parts and the housing is to use the mechanical fasteners structure of physics: when two kinds of materials cooperate, in order to guarantee good protective, generally all be between two kinds of materials, to increase rubber seal or rubber seal structure, and then it is urgent to add standard component with securing member, makes sealing ring produce that decrement is prevented dust, waterproof.Also need to increase reflector in the Transparent Parts of traditional LED light fixture simultaneously and come reflection ray, such structure often material is many, and volume is larger, and is easy to produce the problem that protection was lost efficacy between the too much material.

The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a LED light fixture is characterized in that, comprising:

Upper casing has accepting groove, and the bottom of described accepting groove offers loophole;

Lens are contained in the described accepting groove and hide described loophole;

Lower casing has the electrical equipment groove, and described lower casing is fixedly connected with the side of described upper casing near described loophole place near a side at the opening place of described electrical equipment groove, so that described loophole is connected with described electrical equipment groove;

Drive circuit board is contained in the described electrical equipment groove, and corresponding setting with described loophole; And

LED is directly fixed on the described drive circuit board, and is contained in the described loophole;

Wherein, described upper casing and lens are made by two kinds of similar plastic materials of molecular structure respectively, and described lens are made by transparent plastic; The mode of described lens by ultrasonic bonding directly links together with the sidewall melting of the accepting groove of described upper casing, to seal the opening of described accepting groove.

2. LED light fixture as claimed in claim 1 is characterized in that, the bottom of described electrical equipment groove is provided with fixed leg, and described drive circuit board is fixed on the described fixed leg.

3. LED light fixture as claimed in claim 2 is characterized in that, the free-ended end face of described fixed leg is provided with positioning boss, and described drive circuit board offers the locating hole that passes for described positioning boss.

4. LED light fixture as claimed in claim 1 is characterized in that, described upper casing is provided with locating dowel near a side at described loophole place, and described lower casing offers the locating slot of accommodating described locating dowel near a side correspondence at the opening place of described electrical equipment groove.

5. LED light fixture as claimed in claim 4, it is characterized in that, described locating dowel is offered screw at its free-ended end face, the bottom of described locating slot offers the through hole that passes for threaded fastener, and described threaded fastener is screwed with the screw of described locating dowel and described upper casing is fixedly connected with described lower casing.

6. LED light fixture as claimed in claim 5 is characterized in that, described locating dowel is annular, and described locating slot is the groove of annular; Described light fixture also comprises sealing ring, and described sealing ring is contained in the locating slot, and arranges near the inboard of described locating slot; The free-ended end face of described locating dowel and described sealing ring butt.

7. LED light fixture as claimed in claim 1 is characterized in that, described lens have the arc exiting surface, and described arc exiting surface protrudes outside the described upper casing.

8. LED light fixture as claimed in claim 7 is characterized in that, the side that described lens are relative with described arc exiting surface is formed with boss, and described boss is contained in the described loophole.

9. LED light fixture as claimed in claim 1 is characterized in that, the bottom of described electrical equipment groove also is provided be used to the support column that supports described drive circuit board middle part.

10. manufacture method such as each described LED light fixture of claim 1～9, it comprises the steps:

Clamp head and the lower clamp head relative with described upper clamp head are provided, and described upper clamp head is used for the described lens of clamping, and described lower clamp head is used for the described upper casing of clamping;

Described upper clamp head moves towards described lower clamp head, until described lens are contained in the accepting groove of described upper casing; And

Adopt the contact position of the sidewall of the described lens of ultrasonic irradiation and described upper casing accepting groove, the contact position of sidewall of the accepting groove of described lens and described upper casing is welded together.

Images