Glass-packaged LED R7S bulb

Abstract

The utility model provides a glass packaged LED R7S bulb which comprises a glass bulb shell composed of a main body part, a first clamping and sealing part and a second clamping and sealing part which are integrated, a cylindrical LED luminous body arranged in the main body part, a driving circuit board arranged in the LED luminous body, and a first sealing cover and a second sealing cover which are fixedly arranged on the two sides of the LED luminous body respectively. The first lamp holder and the second lamp holder are correspondingly and fixedly arranged on the first clamping and sealing part and the second clamping and sealing part, the first electrode and the second electrode are correspondingly and fixedly arranged in the first lamp holder and the second lamp holder, a gas channel is formed in the first clamping and sealing part in the axial direction, and the inner end of the first wire and the inner end of the second wire are electrically connected with one power input end of the driving circuit board respectively. The outer end of the first wire penetrates through the center through hole of the first sealing cover and the gas channel and then is electrically connected with the first electrode, and the outer end of the second wire penetrates through the center through hole of the second sealing cover and the second clamping sealing part and then is electrically connected with the second electrode. Through the structural improvement, the technical problems of the existing similar bulbs can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED light sources, and particularly relates to an LED R7S bulb with glass encapsulation. Background Art

[0002] In recent years, LED R7S bulbs with glass encapsulation have gradually replaced traditional halogen R7S lamps and LED R7S lamps encapsulated in transparent plastic tubes due to their obvious advantages. For example, a flicker-free all-glass R7S lamp disclosed in a patent document with the authorization announcement number CN217273607U rolls the LED light-emitting chips on an aluminum substrate into a cylindrical shape to form a light source assembly 2. A driving power supply 3 (i.e., the so-called driving circuit board in the industry) is placed in the inner cavity of the cylinder. Two cup-shaped ceramic end caps 4 are used as plugs at both ends of the cylinder. Two input poles of the driving power supply 3 are respectively connected to a molybdenum sheet 5 through a wire Ⅰ6 passing through a through hole provided in the ceramic end cap 4 and then connected to the molybdenum sheet 5 and an electrode 7 through a wire Ⅱ9. The electrode 7 is arranged in a lamp holder 8; an exhaust hole 10 is opened at about 15 mm from the port at one end of its glass bulb 1, about 2 mm in size. The areas about 10 mm at both ends of the glass bulb 1 are fused and clamped. Two lamp holders 8 are fixedly arranged at the clamping parts on both sides of the glass bulb 1 respectively, thus forming a complete LED R7S bulb. This glass-encapsulated LED R7S bulb is welcomed by the market because it overcomes many defects of similar bulbs.

[0003] However, there are still areas for improvement in this bulb: First, in order to allow the volatiles generated by the driving power supply 3 during long-term operation due to heat to escape from the lamp body to prevent condensation on the inner surface of the glass bulb 1 and affect the light output, an exhaust hole 10 is provided on its glass bulb 1. However, it is found during actual use that after the lamp has been used for a period of time, dust will enter the glass bulb 1 from its exhaust hole 10, and even small insects and other sundries will enter the glass bulb 1, affecting the lighting effect and the life of the lamp. Second, the two input poles of the driving power supply 3 are each composed of a set of electrode 7, wire Ⅱ9, molybdenum sheet 5, and wire Ⅰ6 that are electrically connected in sequence from outside to inside, with a relatively complex structure, increasing the manufacturing difficulty and cost. Third, the structure of this lamp determines that when the two ends of its glass bulb 1 are fused and clamped during the manufacturing process, the driving power supply 3 is too close to the heat source, easily damaging the electronic components (such as electrolytic capacitors, etc.) on the driving power supply 3, resulting in an increase in the defective rate and a shortening of the product life. Summary of the Invention

[0004] The purpose of the utility model is to provide an LED R7S bulb with glass encapsulation and improved structure to solve the problems existing in the prior art.

[0005] The technical solution of the present utility model is as follows: The glass-encapsulated LED R7S bulb of the present utility model includes a glass bulb shell composed of a main body part and a first clamping part and a second clamping part integrally provided on both sides of the main body part. An LED light-emitting body is cylindrically arranged in the main body part of the glass bulb shell. A driving circuit board is arranged in the LED light-emitting body for driving the LED light-emitting body to work. A first cover and a second cover are fixedly arranged on both sides of the LED light-emitting body respectively, and each is provided with a central through hole. A first lamp holder and a second lamp holder are fixedly arranged corresponding to the first clamping part and the second clamping part respectively. A first electrode and a second electrode are fixedly arranged corresponding in the first lamp holder and the second lamp holder respectively. Its structural feature is that it further includes a first wire and a second wire. An air channel is axially arranged in the first clamping part, with its inner end communicating with the inside of the main body part and its outer end communicating with the atmosphere. The inner ends of the first wire and the second wire are electrically connected to a power input terminal of the driving circuit board respectively. The outer end of the first wire sequentially passes through the central through hole of the first cover and the air channel and is electrically connected to the first electrode. The outer end of the second wire sequentially passes through the central through hole of the second cover and passes through the second clamping part and is electrically connected to the second electrode.

[0006] A further solution is that: The air channel is an air outlet hole preset in the first clamping part.

[0007] A further solution is that: The aperture of the air outlet hole is 0.5 - 2 mm.

[0008] A further solution is that: The air channel is a metal tube embedded in the first clamping part.

[0009] A further solution is that: The air channel is a metal solenoid embedded in the first clamping part.

[0010] A further solution is that: The LED light-emitting body and the driving circuit board are arranged in the main body part of the glass bulb shell in a manner close to the first clamping part and far from the second clamping part.

[0011] A further solution is that: The outer diameter of the LED light-emitting body matches the inner diameter of the main body part of the glass bulb shell, so that the LED light-emitting body is arranged with its outer periphery close to the inner wall of the main body part of the glass bulb shell.

[0012] The present utility model has positive effects:

[0013] (1) Through the improvement design of the overall structure of the present utility model, especially by providing an air outlet (or pipe) within the first pinch seal portion of the glass bulb, the first wire passes through the air outlet (or pipe) without affecting the internal and external ventilation. Moreover, since the outer end of the air outlet (or pipe) has a first electrode and a first lamp holder that do not obstruct ventilation, compared with the prior art closest to it in which an exhaust hole is provided on the glass bulb, it can minimize the entry of dust, small insects, and other debris into the main body of the glass bulb, thus effectively solving the technical problem in the prior art closest to it that the lighting effect and the lifespan of the lamp are affected by the setting method of the exhaust hole.

[0014] (2) Through the improvement design of the structure of the present utility model that directly electrically connects two electrodes to two power input terminals of the drive circuit board by two wires, compared with the structure in the prior art closest to it where the two input poles of the drive power supply each consist of a set of electrodes, wire II, molybdenum sheet, wire I, and electrode that are electrically connected in sequence from outside to inside, it is significantly simpler, and the manufacturing difficulty and cost can be significantly reduced.

[0015] (3) Through the improvement design of the overall structure of the present utility model, the pre-drive circuit board can be positioned as close as possible to the first pinch seal portion that has been pre-melted and formed, while being far away from the second pinch seal portion that is finally melted and formed. This enables the drive circuit board to be effectively away from the heat source when the second pinch seal portion is finally melted and formed, thereby avoiding damage to the electronic components on the drive circuit board, and effectively solving the technical problems in the prior art that the electronic components on the drive circuit board are easily damaged due to being too close to the heat source during the melting and forming processes of the first and second pinch seal portions, resulting in an increase in the defective rate and a shortening of the product lifespan. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 It is Figure 1 an enlarged view of part A in

[0018] Figure 3 It is a schematic diagram of the structure of the present utility model after processing the first pinch seal portion of the glass bulb on the glass tube;

[0019] Figure 4 It is Figure 3 a schematic diagram of the structure when LED light-emitting bodies and drive circuit boards and other components are added to the components in

[0020] Figure 5 It is the enlarged view of part A corresponding to the second embodiment of the present utility model in Figure 1 an enlarged view of part A in

[0021] Figure 6 It is the enlarged view of part A corresponding to the third embodiment of the present utility model in Figure 1Enlarged view of part A in the figure.

[0022] The reference numerals in the above-mentioned drawings are as follows:

[0023] Glass bulb 1, main body 11, first pinch seal part 12, air vent 12-1, second pinch seal part 13; LED light-emitting body 2; driving circuit board 3; cover 4, first cover 41, second cover 42; wire 5, first wire 51, second wire 52; electrode 6, first electrode 61, second electrode 62; R7S lamp holder 7, first lamp holder 71, second lamp holder 72; metal tube 8, metal solenoid 9. Detailed implementation manners

[0024] The present utility model will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0025] (Embodiment 1)

[0026] See Figures 1 to 4 , the glass-encapsulated LED R7S bulb of this embodiment mainly consists of a glass bulb 1, an LED light-emitting body 2, a driving circuit board 3, a cover 4, a wire 5, an electrode 6 and a lamp holder 7.

[0027] The glass bulb 1 is made of a glass tube. The glass bulb 1 includes a main body 11 and a first pinch seal part 12 and a second pinch seal part 13 that are formed by melting on both sides of the main body 11. Different from the prior art, an air passage is axially provided in the first pinch seal part 12, with the inner end communicating with the inside of the main body 11 and the outer end communicating with the atmosphere. In this embodiment, the air passage is formed by a preset air vent 12-1 when melting the first pinch seal part 12, and the aperture of the air vent 12-1 is 0.5-2 mm.

[0028] The LED light-emitting body 2 is integrally cylindrical; the structure of the LED light-emitting body 2 is the prior art and will not be elaborated. Slightly different from the prior art, the outer diameter of the LED light-emitting body 2 matches the inner diameter of the main body 11 of the glass bulb 1 so that the LED light-emitting body 2 is close to the inner wall of the main body 11 of the glass bulb 1, which is beneficial to heat dissipation during use and prolongs the service life of the bulb.

[0029] The driving circuit board 3 is arranged inside the LED light-emitting body 2. The structure of the driving circuit board 3 is the prior art and will not be elaborated; the driving circuit board 3 has two power output terminals and two power input terminals. The two power output terminals of the driving circuit board 3 are electrically connected to the LED light-emitting body 2 to drive the LED light-emitting body 2 to work.

[0030] The cover 4 is a cup-shaped ceramic structural member. A central through-hole penetrating left and right is provided in the middle of the cover 4. There are two covers 4 with the same structure, which are respectively called the first cover 41 and the second cover 42. One first cover 41 and one second cover 42 are fixedly covered and arranged at both ends of the LED light-emitting body 2 respectively, so as to encapsulate the driving circuit board 3 in the LED light-emitting body 2.

[0031] The wires 5 are made of nickel-plated iron wires or other electrically conductive rod-shaped structural members. There are two wires 5, which are respectively called the first wire 51 and the second wire 52. There are two electrodes 6, which are respectively called the first electrode 61 and the second electrode 62. The inner ends of the first wire 51 and the second wire 52 are electrically connected to a power input terminal of the driving circuit board 3 respectively. The outer end of the first wire 51 sequentially passes through the central through-hole of the first cover 41 and the air outlet 12-1 of the first clamping part 12 and then is fixedly connected and electrically connected to the first electrode 61. The outer end of the second wire 52 passes through the central through-hole of the second cover 42 and passes through the second clamping part 13 of the glass bulb 1 and then is fixedly connected and electrically connected to the second electrode 62.

[0032] Preferably, the length of the first wire 51 is less than the length of the second wire 52, that is, the driving circuit board 3 is arranged in the main body part 11 of the glass bulb 1 in a manner close to the first clamping part 12 and far from the second clamping part 13. Thus, when the second clamping part 13 is formed by melting the glass bulb 1, the driving circuit board 3 can be far from the heat source, so as to effectively solve the technical problems in the closest prior art that the driving power supply is too close to the heat source during the manufacturing process, which easily damages the electronic components on the driving power supply, resulting in an increase in the defective rate and a shortening of the product life.

[0033] Moreover, in this embodiment, the two power input terminals of the driving circuit board 3 are each directly electrically connected to a corresponding electrode 6 through a wire 5. Compared with the way in the closest prior art that the two input poles of the driving power supply are each composed of a set of electrodes, wire II, molybdenum sheet, and wire I that are electrically connected in sequence from outside to inside to be electrically connected to the electrode, the structure of this embodiment is significantly simpler, and the manufacturing difficulty and cost can be significantly reduced.

[0034] The structure and installation method of the R7S lamp holder 7 are the same as those in the prior art. There are two R7S lamp holders 7 with the same structure, which are respectively called the first lamp holder 71 and the second lamp holder 72. The first lamp holder 71 and the second lamp holder 72 are respectively fixedly arranged on the first clamping part 12 and the second clamping part 13 of the glass bulb 1, and the first electrode 61 and the second electrode 62 are respectively fixedly arranged in the first lamp holder 71 and the second lamp holder 72.

[0035] In this embodiment, an air vent 12-1 is provided in the first clamping part 12 of the glass bulb 1. The first wire 51 passes through the air vent 12-1 without affecting the ventilation of the air vent 12-1. Moreover, since the outer end of the air vent 12-1 is blocked by the first electrode 61 and the first lamp cap 71 without affecting ventilation, compared with the prior art method of providing an exhaust hole on the glass bulb, it can minimize the entry of dust, small insects and other sundries into the main body 11 of the glass bulb 1, thus effectively solving the technical problem in the closest prior art that the lighting effect and the life of the lamp are affected by the arrangement of the exhaust hole.

[0036] (Embodiment 2)

[0037] See Figure 5 , the glass-encapsulated LED R7S bulb of this embodiment is the same as that of Embodiment 1 in other aspects, except that: the gas channel in the first clamping part 12 of the glass bulb 1 is composed of a metal tube 8 embedded in the first clamping part 12, and the first wire 51 passes through the metal tube 8.

[0038] (Embodiment 3)

[0039] See Figure 6 , the glass-encapsulated LED R7S bulb of this embodiment is the same as that of Embodiment 1 in other aspects, except that: the gas channel in the first clamping part 12 of the glass bulb 1 is composed of a metal solenoid 9 embedded in the first clamping part 12, and the first wire 51 passes through the metal solenoid 9.

[0040] The above embodiments are descriptions of the specific implementation manners of the present invention, rather than limitations on the present invention. Those skilled in the relevant technical fields can also make various transformations and changes to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. A glass-encapsulated LED R7S bulb, comprising a glass bulb shell consisting of a main body and a first clamping portion and a second clamping portion integrally arranged on both sides of the main body, an LED illuminant cylindrically arranged in the main body of the glass bulb shell, a driving circuit board arranged in the LED illuminant to drive the LED illuminant to work, a first cover and a second cover fixedly arranged on both sides of the LED illuminant and each having a central through hole, a first lamp cap and a second lamp cap fixedly arranged on the first clamping portion and the second clamping portion, and a first electrode and a second electrode fixedly arranged in the first lamp cap and the second lamp cap, characterized in that: It also includes a first conductive wire and a second conductive wire. A gas channel is axially provided in the first clamping portion, the inner end of which is connected to the inside of the main body and the outer end of which is connected to the atmosphere. The inner ends of the first conductive wire and the second conductive wire are respectively electrically connected to a power input terminal of the driving circuit board. The outer end of the first conductive wire passes through the central through hole of the first cover and the gas channel in sequence and is electrically connected to the first electrode. The outer end of the second conductive wire passes through the central through hole of the second cover and the second clamping portion in sequence and is electrically connected to the second electrode.

2. The glass-encapsulated LED R7S bulb according to claim 1, characterized in that: The gas channel is a gas outlet hole preset in the first clamping portion.

3. The glass-encapsulated LED R7S bulb according to claim 2, characterized in that: The diameter of the air outlet hole is 0.5-2 mm.

4. The glass-encapsulated LED R7S bulb according to claim 1, characterized in that: The gas channel is a metal tube pre-buried in the first clamping portion.

5. The glass-encapsulated LED R7S bulb according to claim 1, characterized in that: The gas channel is a metal solenoid pre-buried in the first clamping seal portion.

6. The glass-encapsulated LED R7S bulb according to claim 1, characterized in that: The LED illuminant and the driving circuit board are arranged in the main body of the glass bulb in a manner close to the first clamping portion and away from the second clamping portion.

7. The glass-encapsulated LED R7S bulb according to claim 1, characterized in that: The outer diameter of the LED illuminant matches the inner diameter of the main body of the glass bulb shell, so that the LED illuminant is arranged in a manner that its outer periphery is close to the inner wall of the main body of the glass bulb shell.

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