CN2618049Y

CN2618049Y - LED cup light

Info

Publication number: CN2618049Y
Application number: CNU032319878U
Authority: CN
Inventors: 沈锦祥
Original assignee: Tongxiang Shenghui Lighting Co ltd
Current assignee: Sengled Optoelectronics Co Ltd
Priority date: 2003-06-11
Filing date: 2003-06-11
Publication date: 2004-05-26
Anticipated expiration: 2013-06-11

Abstract

The utility model relates to a cup lamp with a light emitting diode, wherein a circular platform (1a) is arranged on the inner wall of the body of the lamp cup (1); a circuit board (12) is adhered to the circular platform (1a); a back-side hollow cavity (4) is arranged on the back of the circuit board (12) as well as at the bottom of the inner wall of the cup body; an electronic component (3) is welded on the back of the circuit board (12); a light emitting diode (D) is welded on the front side of the circuit board (12); the outer connective terminal is electrically connected to the circuit board (12), i.e. two metal cylindrical sticks (6) are fixed on the cup base (1b) and are exposed outside the bottom plate of the cup base (1b); a plurality of diffusing parts (10) are distributed on the inner wall of the cup body (1), i.e. a radial concave inward arc straight grooves (10a); a thin layer of reflective film (2) is arranged on the surface of the inner wall of the cup body (1); a thin layer of circuit-board reflective film (11) is also arranged on the front side of the circuit board (12). The utility model provides convenience for fixing of the circuit board (12); the application of a back-side hollow cavity (4) on the back of the circuit board (12) is favorable for heat radiation for the electronic component (3) and enables good reflection result and soft light-shoots.

Description

LED Light Cup

Technical field the utility model relates to a kind of lighting, i.e. LED Light Cup.

The technical background light emitting diode is with its power consumptive province, and the life-span is long, safety, environmental protection and be subjected to consumer's favor.But existing LED Light Cup, structure is unreasonable, cup lamp as Chinese utility model patent CN2447620Y, fixing of its circuit board is not very convenient, and the space of back of circuit board is all filled by glass cement, with fixed circuit board, influenced the heat radiation of solid welding at the electronic devices and components of back of circuit board.

The summary of the invention the purpose of this utility model provides a kind of circuit board convenient fixing, and the electronic devices and components of back of circuit board have the LED Light Cup of certain heat-dissipating space.

For this reason, the technical solution that the utility model proposes is, a kind of LED Light Cup, comprise Lamp cup, circuit board is fixed on the light emitting diode that circuit board is positive and be electrically connected with circuit board, and be positioned at two external terminals that are electrically connected with circuit board on the Lamp cup cup pin etc., there is a ring-shaped platform Lamp cup cup inwall appropriate location, and circuit board is bonded on this ring-shaped platform, and forms a cavity between at the bottom of back of circuit board and the Lamp cup cup inwall wall.

At Lamp cup cup inner wall surface coated the skim reflectance coating is arranged.

Skim circuit board reflectance coating is also arranged in the circuit board front.

From the above mentioned, because Lamp cup cup inwall has a ring-shaped platform, circuit board just can place easily on this ring-shaped platform and be fixed by bonding agent, has then formed a cavity between at the bottom of back of circuit board and the Lamp cup cup inwall wall.The existence of this cavity helps being positioned at the heat radiation of the electronic devices and components of back of circuit board.

Below in conjunction with drawings and Examples the utility model is further described.

Description of drawings Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is that the waveform of the circular arc straight trough 10a of diffuse reflection plate 10 among Fig. 1 launches schematic diagram;

Fig. 3 is the plane of circuit board 12 among Fig. 1;

Fig. 4 is the board circuit figure of embodiment 1;

Fig. 5 is the utility model embodiment 2 structural representations;

Fig. 6 is the board circuit figure of embodiment 2.

Specific embodiment embodiment 1 as shown in Figure 1, the Lamp cup 1 of the bowl-type of a glass system has cup and cup pin 1b, there is a ring-shaped platform 1a position, Lamp cup 1 cup inwall lower middle, there is the circuit board 12 of lighting circuit to be placed on the ring-shaped platform 1a in the insulating materials manufacturing, and bonding by bonding agent.Then circuit board 12 is divided into front cavity 13 and backside cavity 4 up and down with Lamp cup 1 cup inner chamber.Electronic devices and components 3 in the lighting circuit, as rectifier bridge heap ZQ, solid weldings such as resistor R, capacitor C are at the back side of circuit board 12, light emitting diode D then solid welding in the front of circuit board 12.At Lamp cup 1 cup rim of a cup position a ring-shaped platform is arranged also, bonding bowl cover 9 on it, with light emitting diode D protectiveness cover in the Lamp cup 1.But can not want bowl cover 9 yet.Lamp cup 1 cup inwall is distributed with some diffuse reflection plates 10, and as shown in Figure 1, this diffuse reflection plate 10 is the circular arc straight trough 10a at the bottom of several axial rim of a cup ring-shaped platforms from cup extend to glass.The waveform of circular arc straight trough 10a launches schematic diagram as shown in Figure 2.Circular arc straight trough 10a makes reflection ray be diffuse scattering, thereby makes the light of glass lamp softer.As shown in Figure 1, in Lamp cup 1 cup inner wall surface, have promptly that coated has skim reflectance coating 2 on the corrugated surface of circular arc straight trough 10a.Reflectance coating 2 can be the infrared ray deielectric-coating, and reflect visible light and filter infrared ray makes infrared ray see through Lamp cup 1 and outwards launches, and helps the heat radiation of glass lamp.Reflectance coating 2 also can be an aluminizer, then while reflect visible light and infrared ray.In addition, the also coated skim circuit board reflectance coating 11 in circuit board 12 fronts.11 of circuit board reflectance coatings are tin-plated coating film, to strengthen the reflection of light.As shown in Figure 3, there are 4 breach 12a at circuit board 12 edges of embodiment 1, the radial width of breach 12a is greater than the radial width of ring-shaped platform 1a on the Lamp cup 1, thereby behind the bonding circuit board 12, backside cavity 4 and front cavity 13 are communicated with through breach 12a, more help the heat radiation of circuit board 12 back side electronic devices and components 3.

Embodiment 1 is the pins type external terminal, cup pin 1b cross section is the rectangle of the outside four jiaos of slynesses of center oblong aperture, two external terminals, be that round metal bars 6 is cemented on the insulation board 5 of a sheet glass system separatedly, two leads 8 that draw on circuit board 12 are electrically connected with two round metal bars 6, and the insulation filling material 7 that 5 of insulation boards are filled in glass pin 1b endoporus is cemented in glass pin 1b endoporus.Two round metal bars 6 are passed and are exposed to outside glass base plate of pin 1b.

Embodiment 1 is low compression cup lamp, and the lighting circuit on the circuit board 12 as shown in Figure 4.This circuit is made up of current rectifying and wave filtering circuit and load circuit two parts.Wherein current rectifying and wave filtering circuit is, pile two ac voltage inputs of ZQ through lead 8 and two pins type external terminals by the rectifier bridge that four diodes are formed, be round metal bars 6 and exchange the 12V power supply and be connected, between two dc voltage output ends and connect three capacitor C1, C2, C3 filtering, wherein the positive pole of electrolytic capacitor C1 links to each other with the positive plate output of bridge heap ZQ.Load circuit is by several branch roads and connects and form that wherein each branch road fork is connected in series by a current-limiting resistor R and several light emitting diodes D.Load circuit 21 is connected across between two dc voltage output ends of bridge heap ZQ, and wherein light emitting diode D is the forward serial connection.In the above-mentioned load circuit, a way, the light emitting diode number can be determined according to user's needs in each branch road.

Embodiment 2 is a high pressure screw type cup lamp.As shown in Figure 5, the ring-shaped platform 1a of this glass lamp is positioned at the rim of a cup of Lamp cup 1, does not have bowl cover, and light emitting diode D solid welding is positive and expose in Lamp cup 1 outside at circuit board 12, and electronic devices and components 3 are as the back side of solid weldings such as diode, resistor at circuit board 12.Fixed metal swivel nut 14 on the columniform cup pin 1b face of cylinder of hollow, the fixed and exposed conducting contact 15, base plate center of cup pin 1b, metal swivel nut 14 and conductive contact 15 are insulated from each other and be connected with circuit board 12 by lead 8 respectively.Then metal swivel nut 14 and conductive contact 15 just become the external terminal of glass lamp.As shown in Figure 5, the diffuse reflection plate 10 of Lamp cup 1 cup inwall is the little diamond block 10b of a nick, by the variation of its curved surface, makes reflection ray be diffuse scattering, thereby makes the light of glass lamp softer.Diffuse reflection plate 10 can also adopt other curved-surface structures.

Lighting circuit on embodiment 2 circuit boards 12 as shown in Figure 6.This circuit is made up of rectification filtering voltage stabilizing circuit and load circuit two parts.Four diodes are formed rectifier bridge ZQ, two ac input end is that metal swivel nut 14 links to each other through 8 one in lead with external terminal, another serial connection resistor R 1, capacitor C4 and connection circuit is after lead 8 and another external terminal, be that conductive contact 15 links to each other, two external terminals are connected with the alternating current 220V power supply.Resistor R 1, capacitor C4 step-down current limliting.Respectively parallel between two dc voltage output ends of rectifier bridge ZQ electrochemical capacitor C5, Zener diode BG series resistor device R2 branch road, wherein electrolytic capacitor C5 just connects, Zener diode BG reversal connection.Capacitor C6, C7 and load circuit all and be connected in Zener diode BG two ends, thereby load circuit voltage is stable.Load circuit is also by several branch roads and connect and form, and each route resistor R 3 and light emitting diode D ' are connected in series.As shown in Figure 6, embodiment 2 is made up of a current-limiting resistor R3 and four light emitting diode D ' in every branch road 4 branch roads.

Claims

1. LED Light Cup, comprise Lamp cup (1), circuit board (12), be fixed on the light emitting diode (D) that circuit board (12) is positive and be electrically connected with circuit board (12), and the cup pin (1b) that is positioned at Lamp cup (1) is gone up two external terminals being electrically connected with circuit board (12) etc., it is characterized in that: there is a ring-shaped platform (1a) Lamp cup (1) cup inwall appropriate location, circuit board (12) is bonded on this ring-shaped platform (1a), and forms a backside cavity (4) between at the bottom of circuit board (12) back side and Lamp cup (1) the cup inwall wall.

2. LED Light Cup according to claim 1 is characterized in that: be distributed with some diffuse reflection plates (10) at Lamp cup (1) cup inwall.

3. LED Light Cup according to claim 2 is characterized in that: described diffuse reflection plate (10) is the circular arc straight trough (10a) of the axial indent at the bottom of being extended to glass from rim of a cup.

4. LED Light Cup according to claim 2 is characterized in that: described diffuse reflection plate (10) is the little diamond block (10b) of the nick at the bottom of being extended to glass from rim of a cup.

5. LED Light Cup according to claim 1 is characterized in that: the outer surface that removes the rim of a cup part at Lamp cup (1) cup inwall has skim reflectance coating (2).

6. LED Light Cup according to claim 1 is characterized in that: there is skim circuit board reflectance coating (11) in described circuit board (12) front.

7. LED Light Cup according to claim 1 is characterized in that: there are several breach (12a) at described circuit board (12) edge, make circuit board (12) up and down two sides' backside cavity (4) be communicated with front cavity (13).

8. according to the described LED Light Cup of arbitrary claim in the claim 1 to 7, it is characterized in that: cup pin (1b) cross section is the rectangle of hollow, described two external terminals are the pins type external terminal, the round metal bars (6) of promptly exposing two mutually insulateds of a glass pin (1b) base plate, two round metal bars (6) are fixed on the insulation board (5) separatedly, and the insulation filling material (7) that insulation board (5) then is filled in glass pin (1b) is cemented in the endoporus of a glass pin (1b).

9. according to the described LED Light Cup of arbitrary claim in the claim 1 to 7, it is characterized in that: the cross section of cup pin (1b) is the face of cylinder of hollow, described two external terminals are screw-type external terminals, one of them external terminal is the metal swivel nut (14) that is cemented on the face of cylinder of a glass pin (1b), and another external terminal then is to be fixed on a glass pin (1b) base plate and the conductive contact (15) that exposes.