KR20090071473A - Lamp socket, discharge lamp unit and luminescent device - Google Patents

Abstract

A lamp socket, a discharge lamp unit, and a light emitting device are provided to prevent damage to a glass bulb by absorbing shock and vibration in using or transferring a discharge lamp unit. A lamp socket(30) includes a socket case(31) and a socket cover(32). The socket case includes a case main body(33) and an electric connection terminal(34). A supporting concave part(33a) is formed in the case main body. A feeding member for a lamp is placed in the supporting concave part. A connection concave part(34c) is formed in the electric connection terminal. A feeding terminal is placed in the connection concave part. The socket cover is coupled in a top part of the socket case. A pushing part and a pressing part are formed on the socket cover. The pushing part is formed in an opposite position of the supporting concave part in order to cover the feeding member for the lamp. The pressing part pressurizes the feeding terminal.

Description

Lamp socket, discharge lamp unit and light emitting device {LAMP SOCKET, DISCHARGE LAMP UNIT AND LUMINESCENT DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp socket for use in a cold cathode discharge lamp, a discharge lamp unit having the lamp socket, and a light emitting device using the discharge lamp unit.

BACKGROUND ART Conventionally, as a power supply structure such as a cold cathode discharge lamp, a thin film made of a solder is deposited on the outer circumferential surfaces of both ends of the glass bulb, and the thin film and the electrode lead wire are known (see Patent Document 1). In this case, the lamp holder is held by a clamping plate having a spring action, and the lamp holder and the thin film serving as the power supply terminal are electrically connected. In addition, a ring-shaped cushioning material is attached to the outer surface near the both ends of the glass tube of the cold cathode discharge lamp, and the buffering material is held in contact with the case and the cover of the socket, and the lead wire is elastically fitted to the socket terminal in the case to feed the power supply. It is known to become (refer patent document 2)

[Patent Document 1] Japanese Patent Publication No. 2007-157564

[Patent Document 2] Japanese Patent Publication No. 2007-95625

However, what is shown by patent document 1 is holding a lamp in the lamp holder which consists of a support plate, and when a lamp is attached, there exists a possibility that a mechanical load may be applied to the glass bulb of a lamp, and a bulb may be damaged. In addition, since the holding force is applied directly to the bulb from the lamp holder even after the attachment, a defect occurs in which the bulb is broken due to the accumulation of stress or deformation of the glass. In addition, there is a problem that the deposition process of the thin film is complicated, the production yield is poor, and the thin film is scraped off when the lamp is inserted into the lamp holder. Therefore, there existed a problem that assembly workability was bad.

On the other hand, what is shown in patent document 2 is that a lead wire is elastically fitted to a socket terminal, but when a lamp is attached, since a mechanical load is applied to a lamp through a lead wire, there exists a possibility that a bulb may be damaged like patent document 1 . Moreover, although the shock absorbing material is affixed on the outer surface of the glass tube both ends, it is not possible to reduce the mechanical load to the lamp in attachment of a lamp. In particular, with the increase in length and fineness of lamps in recent years, it is desirable to improve the assembly workability while reducing the mechanical load on the lamps, and to increase the assembly steps.

The present invention has been made in view of the above circumstances, and the lamp socket, the discharge lamp unit and the light emission capable of reducing the mechanical load on the lamp applied to the lamp socket when the lamp is attached or transported, can be assembled. It is an object to provide a device.

The lamp socket according to claim 1 has a case body in which a supporting recess for mounting the lamp feeding member is placed, and a connection recess in which a feeding terminal protruding coaxially from the lamp feeding member is formed, and is adjacent to the supporting recess. A socket case having an electrical connection terminal disposed at a predetermined position of the case body; A pressing portion formed to cover the lamp feeding member and a pressing portion for pressurizing the feed terminal are formed at a position opposite the support recess of the socket case main body, and has a socket cover that can be engaged with the socket case from the top of the socket case. It is characterized by. The pressing portion of the socket cover may directly press the power feeding member or may be pressed indirectly with another member interposed therebetween. Similarly, the pressurizing section may press the feed terminal directly or indirectly. The supporting recess or the connecting recess is preferably in the shape of a recess in accordance with the outer shape of the main body or the feed terminal. However, if the recess is in the shape of a recess that can be temporarily held, a slight gap is formed between the main body or the feed terminal. It may be a shape. In addition, the adjacency does not necessarily need to be positioned so as to be in contact with each other, and allows a positional relationship at some distance.

In the lamp socket according to claim 2, in the lamp socket according to claim 1, at the end opposite to the direction adjacent to the connection recess of the support recess, a rib for restricting the movement of the lamp feeding member in the lamp axis direction is provided. It is characterized by being formed. The rib may be formed in both the socket case body and the socket cover, or may be formed only in the socket case body.

In the lamp socket according to claim 3, the lamp socket according to claim 1 is characterized in that the electrical connection terminal is attached away from the case main body so that the connection recess is elastically deformable in the downward direction.

The lamp socket according to claim 4 is characterized in that the lamp socket according to claim 3 is bent in an L-shape so as to extend in a downward direction on both side portions of the connection recess of the electrical connection terminal.

The lamp socket according to claim 5 is characterized in that, in the lamp socket according to claim 1, a contact piece elastically biased upward is formed by a cutout in a connection recess of the electrical connection terminal.

The discharge lamp unit of Claim 6, The lamp lamp of any one of Claims 1-5; A discharge lamp main body having a glass bulb with a pair of electrodes sealed therein, a main body portion formed of an elastic body inserted into an end portion of the glass bulb, and a feed terminal held on the main body so as to protrude in the axial direction of the glass bulb and connected to the electrode A discharge lamp having a power feeding member having a power supply member, the main body portion being placed on a support recess of a case of the lamp socket, and the socket cover being held by engaging the socket cover with the power supply terminal placed on a connection recess of the electrical connection terminal; It is characterized by having a.

A light emitting device according to claim 7 includes an apparatus body; The discharge lamp unit of Claim 6 attached to this apparatus main body is provided, It is characterized by the above-mentioned. The light emitting device is a concept including a display device and a lighting device that illuminates a space.

According to the present invention, it is possible to provide a lamp socket, a discharge lamp unit, and a light emitting device which can reduce the mechanical load on the lamp applied to the lamp socket during attachment or transportation, and can make the assembly process vital.

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of the lamp power supply member and discharge lamp which concerns on this invention is described with reference to FIGS. 1 is a front view and a side view showing a power supply member for a lamp, FIG. 2 is a sectional view thereof, FIG. 3 is a front view showing a part of a discharge lamp main body, FIG. 4 is a sectional view showing a discharge lamp, FIG. It is sectional drawing which shows another embodiment of a discharge lamp.

1 and 2, the power feeding member 1 is composed of a main body portion 2 and a power feeding terminal 3. The main body 2 is made of an elastic body having a thermal conductivity of silicone rubber having a hardness of 60 degrees defined by Japanese Industrial Standard (JIS K 6253), and is formed in a substantially hollow cylindrical shape. The outer diameter D is φ4.7 mm, the length L is 8.5 mm, and the thickness T is about 1.0 mm. The hollow inner diameter part of the main body part 2 is comprised from the 1st inner diameter part 2a and the 2nd inner diameter part 2b. The dimension d1 of the 1st inner-diameter part 2a is about 3.7 mm, and the opening end side becomes the insertion opening 2c which can insert and insert the end part of the bulb of the discharge lamp main body mentioned later. In addition, a plurality of protrusions 2d ... protruding inward are formed in the first inner diameter portion 2a. Specifically, three rib-shaped protrusions 2d are formed so as to protrude about 0.2 mm inward in the center direction at equal intervals of approximately 120 degrees, respectively. The projections 2d are formed in the direction of the second inner diameter portion 2b starting from a few mm inward from the opening end of the first inner diameter portion 2a. This makes it easier to insert the end of the bulb.

The opening end dimension d2 of the 2nd inner diameter part 2b is about 2.5 mm, and is formed in diameter smaller than the 1st inner diameter part 2a. In addition, it is preferable that the main body 2 uses an elastic body made of silicone rubber having a hardness of 50 to 70 degrees. This is because if the hardness is less than 50 degrees, the stability of the holding is affected, and if the hardness is over 70 degrees, the stress applied to the bulb becomes large and the breakage of the bulb becomes easy. In addition, the material of the main body part 2 is not limited to silicone rubber, You may apply other synthetic resin etc., The main point should just be an elastic body which has predetermined elasticity. In addition, the plurality of projections 2d... Are not limited to the rib shape, but may be in the shape of dots, and are not limited to shapes, arrangements, and the like.

The feed terminal 3 is provided in the second inner diameter portion 2b. The feed terminal 3 is made of brass, has a substantially cylindrical shape, has a pin shape having a hollow communicating portion 3a, and is coupled to the main body portion 2 by insert molding. The length L1 of the feed terminal 3 is about 10.0 mm, the outer diameter D1 is φ 2.35 mm, the inner diameter d3 of the root portion of the communicating portion 3a is φ 1.72 mm, and the inner diameter d4 of the tip portion is φ 0.9 mm. The opening end on the side of the base portion of the communication portion 3a is formed as a guide portion 3b for guiding the insertion of the electrode lead wire of the discharge lamp main body, which will be described later, with an enlarged inner diameter thereof. It has almost the same dimension as the opening end dimension d2 of the 2 inner diameter parts 2b. Moreover, the fall prevention part 3c which expanded and expanded the outer diameter is formed in the intermediate part. The guide portion 3b also has a function as a fall prevention. In addition, you may couple | bond the main body part 2 and the feeder terminal 3 by press-fitting the feed | shear shear 3 to the main body part 2. As shown in FIG. Although the cylindrical shape is preferable, the shape of the feed terminal 3 may be a polygonal column shape, such as a square and a hexagon, and a cross-section may be C-shape. In addition, the feed terminal 3 is not limited to brass, and a conductive material such as phosphor bronze can be applied.

The cold cathode discharge lamp body 10 shown in FIG. 3 includes a glass bulb 11 and an electrode lead wire 12. The glass bulb 11 is formed of boron, silicate glass, soda glass, or the like. When the cold cathode discharge lamp main body 10 is used as a light source of the backlight of the liquid crystal panel, various kinds of things are prepared within the range of φ1.5 mm to φ5.0 mm in the kind of the outer diameter of the glass bulb 11. According to the specification of the liquid crystal panel can be used separately. And the thing of length 150mm-about 1300mm is also prepared, The dimension has the tendency of thinning and elongation. The electrode lead wire 12 has an outer diameter of 0.6 mm and is drawn from both ends of the glass bulb 11, and is composed of the sealing member 12a and the lead member 12b. The sealing member 12a and the lead member 12b are joined by welding. As the sealing member 12a, a conductive material such as coba, molybdenum, tungsten or the like can be used. As the lead member 12b, a duct wire coated with copper around the nickel iron alloy is used.

Next, the discharge lamp 20 shown in FIG. 4 is comprised by inserting the power supply member 1 in the cold cathode discharge lamp main body 10. FIG. In this embodiment, the cold cathode discharge lamp main body 10 of the outer diameter (phi) 3.0mm, inside diameter (phi) 2.4mm, and thickness 0.3mm of the glass bulb 11 is used. Both ends of the glass bulb 11 are sealed to form a sealed space therein, and rare gases such as argon, xenon, neon, and mercury vapor are sealed. Moreover, the fluorescent film 13 is formed in the inner surface of the glass bulb 11. As the fluorescent film 13, a halo phosphate phosphor, a rare earth metal oxide phosphor, or the like is applied. The electrode 14 has a cup shape having an outer diameter slightly smaller than the inner diameter of the glass bulb 11, and is formed of a material such as nickel, molybdenum, niobium, or the like. A pair of electrodes 14 are sealed at both ends of the glass bulb 11, and the cup-shaped openings 14a are disposed to face each other. The sealing member 12a is joined to the bottom of the electrode 14 by laser beam welding or the like. In the electrode unit composed of the electrode 14 and the electrode lead wire 12, bead glass is welded to the sealing member 12a prior to bonding with the glass bulb 11. When the electrode unit is joined to the glass bulb 11, the end portions of the bead glass and the glass bulb 11 are melted and sealed.

The power supply member 1 is inserted into the end of the glass bulb 11 of the discharge lamp body 10 configured as described above so as to be covered from the insertion port 2c through the electrode lead wire 12. In this case, the clearance dimension t between the insertion opening 2c of the main-body part 2, specifically, the surface of the 1st inner diameter part 2a and the glass bulb 11 is about 0.35 mm. In view of the workability of the insertion of the power feeding member 1 into the glass bulb 11 and the fitted state between the socket case 31 and the socket cover 32 of the power feeding member 1 described later, the gap The dimension t is preferably about 0.1 mm to 0.5 mm. Moreover, since the thickness T of the main-body part 2 is about 1.0 mm, and the said gap dimension t is about 0.35 mm, the ratio t / T becomes 0.35. The present inventors have comprehensively examined the state of the power supply member 1 fitted into the lamp socket 30 and the absorption state of the vibration of the glass bulb 11, and the like. As a result, the ratio t between the thickness T and the gap size t is found. / T acquired the knowledge that 0.1-0.5 are suitable.

Subsequently, after insertion of the power feeding member 1, the front end side of the power feeding terminal 3 is caulked with a punch to form a caulking portion 3d to electrically connect the power feeding terminal 3 and the electrode lead wire 12. The discharge lamp 20 is constituted by mechanical connection. In this case, as for the position of the caulking part 3d, it is suitable to ensure the length dimension L2 of 4 mm or more from the edge part of the glass bulb 11, ie, the sealing part of the electrode lead wire 12. As shown in FIG. Thus, by securing a predetermined length dimension, for example, in the punching step or the assembling step, the electrode lead wire 12 is bent even when bending stress is applied to the electrode lead wire 12 via the feed terminal 3. It is easy to hold, and the stress applied to a sealing part can be reduced, and the damage of the glass bulb 11 can be prevented. On the other hand, the caulking by a punch may be performed in multiple places, and the connection of the feed terminal 3 and the electrode lead wire 12 may be performed by welding. In these connections, it is desirable to have a tensile strength of 100 N or more. The caulking portion 3d and welding means for connecting the power supply terminal 3 and the electrode lead wire 12 to each other electrically connect the power supply member 1 and the discharge lamp main body 10 and mechanically connect the same. By integrating these, the function as a connection means for both electrical and mechanical purposes is accomplished. In the inserted state of the power feeding member 1, the portion inserted into the glass bulb 11 in the main body 2 of the power feeding member 1 is the end of the glass bulb 11 from the tip of the electrode 14. It is located on the side. The end of the glass bulb 11 and the guide portion 3b of the feed terminal 3 are separated by a predetermined dimension G1 in the axial direction, and the communication portion 3a of the feed terminal 3 is provided. The electrode lead wire 12 and the predetermined dimension gap G2 are formed, and a clearance is formed between the feed terminal 3 and the electrode lead wire 12.

Moreover, as shown in FIG. 5, the space | interval G1 of the predetermined dimension between the edge part of the said glass bulb 11 and the guide part 3b of the feed terminal 3 is a tip part of the glass bulb 11, and a power supply. In a state where the guide portion 3b of the terminal 3 is close to each other, the gaps G1 may be spaced apart from each other in a ring shape.

As described above, according to the present embodiment, (1) Since the feed terminal 3 covers the electrode lead wire 12, the conductive area of the electrode lead wire 12 can be substantially increased by the feed terminal 3. There is a stable power supply. (2) Since the power feeding member 1 integrates the main body portion 2 and the power feeding terminal 3, the power feeding member 1 can be handled as a single part, thereby facilitating assembly and part management. (3) Even when stress is applied to the power supply terminal 3 when the discharge lamp 20 is attached to the socket, assembled or transported, the main body portion 2 is formed of an elastic body having a predetermined hardness. The mechanical load acting on (12) is relaxed. In addition, since the end of the glass bulb 11 and the power feeding terminal 3 are spaced apart from each other by a predetermined dimension G1, the stress participating in the power feeding terminal 3 does not act on the end of the glass bulb 11. In addition, a clearance is formed between the power supply terminal 3 and the electrode lead wire 12, and the mechanical load applied directly to the electrode lead wire 12 is further alleviated. Therefore, breakage of the glass bulb 11 can be prevented. (4) In the case where the feed terminal 3 is insert-molded on the main body 2, the production is easy, and the coupling between the main body 2 and the feed terminal 3 is firm. (5) Since a plurality of projections 2d ... are formed inside the insertion hole 2c of the main body 2, the glass bulb 11 is inserted into the center of the inner diameter 2a of the main body 2. can do. (6) Since the main body portion 2 made of silicone rubber has thermal conductivity, it is possible to dissipate heat in the vicinity of the electrode 14 and to suppress deterioration of the sealing portion. (7) Since the guide portion 3b is formed in the feed terminal 3, the electrode lead wire 12 is easily inserted. (8) Since the caulking portion 3d of the feed terminal 3 has a length dimension L2 of 4 mm or more from the end of the glass bulb 11, the electrode lead wire 12 is liable to bend, and the sealing portion The applied stress can be reduced and the breakage of the glass bulb 11 can be prevented.

Next, embodiments of the lamp socket and the discharge lamp unit of the present invention will be described with reference to FIGS. 6 to 13. The discharge lamp unit 7 is composed of a discharge lamp and a lamp socket. First, FIG. 6 is an exploded perspective view showing the lamp socket, FIG. 7 is a perspective view showing the rear surface of the socket cover, FIG. 8 is a perspective view showing the lamp socket, and FIGS. 9 to 11 show the assembling process of the discharge lamp unit. 12 is a sectional view showing a discharge lamp unit, and FIG. 13 is a sectional view showing a socket case.

The lamp socket 30 shown in FIG. 6 is comprised by the socket case 31 and the socket cover 32 which meshes with this socket case 31. As shown in FIG. The socket case 31 has the socket case main body 33 and the electrical connection terminal 34 arrange | positioned at this socket case main body 33. As shown in FIG. The socket case main body 33 is formed of PBT resin, ABS resin, or the like, and forms a substantially rectangular parallelepiped shape. On the upper surface of the socket case main body 33, a semi-cylindrical receiving recess 33a on which the main body 2 of the power feeding member 1 is placed, and a rectangular parallelepiped in contact with the supporting recess 33a in succession. Electrical connection terminal attachment recesses 33b are formed. On the other hand, in the front end opening of the support recess 33a, the rib 33c which faces inward which diameter-reduces a semicylindrical shape is formed. On both sides of the electrical connection terminal mounting recess 33b, insertion holes 33d for attaching the electrical connection terminal 34 are formed. In addition, at four corners of the case main body 33, engaging holes 33e into which the engaging jaws of the socket cover 32 described later are inserted are formed. Further, an engaging jaw 33f is formed downward from both side walls of the case main body 33.

The electrical connection terminal 34 is formed substantially in a U-shape with a conductive material such as brass or phosphor bronze, and has a base 34a and a base leg 34b whose tip extends downward from both sides of the base 34a. It consists of). The base 34a is formed with a semi-cylindrical connection recess 34c on which the power supply terminal 3 is placed. Therefore, the electrical connection terminals 34 are respectively provided from both sides of the connection recess 34c. It is curved in L shape. On the base leg 34b, the season piece 34d cut out toward the outer side is formed. This season piece 34d acts as a fall prevention when the base leg 34b is inserted into the insertion hole 33d.

Like the socket case main body 33, the socket cover 32 is formed of a PBT resin, an ABS resin, or the like, and has a roughly rectangular parallelepiped shape, and the engaging jaw 32f protrudes downward from four corners. As shown in FIG. 6, the socket cover 32 is provided with the semi-cylindrical press recess 32a as a press part in the position which opposes the receiving recess 33a of the said socket case main body 33. As shown in FIG. . In addition, a semi-cylindrical press which is a diameter smaller than the press recessed portion 32a as a pressurized portion at a position facing the press recessed portion 32a and facing the connection recessed portion 34c of the electrical connection terminal 34. Five throats 32b are formed. Moreover, the rib 32c which reduces a semicylindrical shape in diameter is formed in the front end opening part of the pressurizing recessed part 32b.

In the lamp socket 30 as described above, first, the electrical connection terminal 34 is attached to the socket case body 33. Specifically, the base leg 34b of the electrical connection terminal 34 is inserted into the insertion hole 33d of the socket case main body 33, and is performed. Next, the engaging tub 32f of the socket cover 32 is inserted into the engaging hole 33e formed in the four corners of the socket case main body 33. The lamp socket 30 is combined by the above (refer FIG. 8).

Next, the assembling and attaching process of the discharge lamp unit 40 will be described with reference to FIGS. 9 to 11. The discharge lamp unit 40 is composed of a discharge lamp 20 and a lamp socket 30, and is attached to, for example, a substrate 50 or a box 50 of a backlight device of a liquid crystal panel. Although the attachment hole 51 according to the number of attachment of the discharge lamp unit 40 is formed in the board | substrate or the box 50, three attachment holes 51 are provided in the box 50 here for convenience of description. It shows what was formed. The discharge lamp unit 40 is attached to this attachment hole 51. In FIG. 9, the box 50, the socket case 31, the discharge lamp 20, and the socket cover 32 are shown in order so that they may be laminated | stacked. First, when attaching the socket case 31 to the box body 50, the engaging tank 33f of the socket case 31 is inserted so that the socket case 31 may be engaged with the attachment hole 51. As shown in FIG. Then, the engagement tank 33f elastically engages the hole edge of the attachment hole 51 on the back surface of the box 50 through the attachment hole 51 (refer FIG. 10, FIG. 12).

Next, as shown in FIG. 10, the discharge lamp 20 is placed on the socket case 31. Specifically, the main body 2 of the power feeding member 1 is placed so as to fit with the supporting recess 33a of the socket case 31, and the power feeding terminal 3 is connected to the electrical connection terminal 34. It puts on the part 34c. Subsequently, as shown in FIG. 11, the socket cover 32 is sequentially engaged with the socket case 31. This fastening inserts the fastening tank 32f of the socket cover 32 into the fastening hole 33e formed in the four corners of the socket case main body 33, and progresses further insertion, and the box 50 is carried out. To the attachment hole 51 of the. For this reason, like the engagement tank 33f of the said socket case 31, the engagement tank 32f is elastically attached to the hole edge of the attachment hole 51 on the back surface of the box 50 through the attachment hole 51. As shown in FIG. Engage (see FIG. 12). Therefore, these series of assembling and attaching steps can be carried out with respect to the box body 50 so as to stack the parts in one direction, i.e., all up and down directions, thereby reducing the mechanical load on the discharge lamp 20. In addition to being able to simplify the work, it is advantageous in the case of automating the assembly attachment process.

In the above state, the engaging jaw 32f of the socket cover 32 is engaged through the engaging hole 33e of the socket case body 33 and the attachment hole 51 of the box 50. Not only is the socket cover 32 engaged with the socket case 31, but the socket cover 32 itself is also engaged with the box 50. In other words, the socket cover 32 includes the socket case 31 and the discharge lamp 20 together to engage the box 50. In this case, the socket case 31 itself is a box body. Since it engages with (50), it engages with the box 50 double.

It demonstrates, referring FIG. 12 further. In this engagement, the main body 2 of the feeder member 1 is pressed against the pressing recessed portion 32a of the socket cover 32 and accompanied with some elastic deformation, while the socket case 31 and the socket It is sandwiched between the covers 32. At this time, since a gap is formed between the main body part 2 and the glass bulb 11, the gap is reduced evenly by the pressing of the pressing concave portion 32a, and it is possible to be supported without shifting the central axis. Become. On the other hand, the power supply terminal 3 of the power feeding member 1 is pressed against the pressing recessed portion 32b of the socket cover 32 and is supported while being elastically biased to the connecting recessed portion 34c of the electrical connection terminal 34. . At this time, the feed terminal 3 can be bent so as to be shifted with respect to the central axis of the glass bulb 11, and it is suitable by the elastic return stress and the pressing force between the connecting recess 34c and the pressing recess 32b. The contact pressure is secured and arranged in a state of high reliability of the electrical connection. In addition, even if there is a dimensional error in the feeding member 1 or the like, for example, the deflection can absorb the error. On the other hand, in the engagement of the socket cover 32, the pressurized recessed part 32b of the socket cover 32 first contacts the feed terminal 3, and then presses the recessed part of the socket cover 32 ( 32a) has a dimensional relationship which contacts the main-body part 2 which consists of elastic bodies of the power feeding member 1. As shown in FIG.

Therefore, in the engagement process of the actual socket cover 32, first, the feed terminal 3 bends slightly in the direction of the connection recess 34c of the electrical connection terminal 34, and with the connection recess 34c. Increase contact pressure. Subsequently, the main body portion 2 is pressed against the pressing recess 32a of the socket cover 32 to elastically deform, and the feed terminal 3 is pushed further to the pressing recess 32b to connect the recessed portion. The contact pressure with 34c is increased. Therefore, the power supply terminal 3 is securely connected to the electrical connection terminal 34 at an appropriate contact pressure, and the discharge lamp 20 is securely held in the lamp socket 30.

Next, as shown in FIG. 12, the power supply member 1 of the discharge lamp 20 is fitted to the lamp socket 30. The main body 2 of the power feeding member 1 is held between the supporting recess 33a of the socket case main body 33 and the pressing recess 32a of the socket cover 32. In this case, the main body part 2 is restricted in the axial movement by the ribs 32c and the ribs 33c. In addition, the power supply terminal 3 of the power feeding member 1 is held between the connection recess 34c of the electrical connection terminal 34 and the pressure recess 32b of the socket cover 32. At this time, as shown in FIG. 13, the base 34a of the electrical connection terminal 34 is spaced apart from the electrical connection terminal mounting recess 33b of the socket case main body 33 so as to be elastically deformable in the vertical direction. Since it is provided, it becomes possible to ensure the contact pressure with the power supply terminal 3 suitably.

As mentioned above, according to this embodiment, in addition to the effect of embodiment of the above-mentioned lamp feeding member and discharge lamp, the following effects are achieved. (1) The operation of attaching the discharge lamp 20 to the lamp socket 30 can be performed in an up and down direction, thereby reducing the mechanical load on the discharge lamp 20 and simplifying the work. By using an automatic machine, such as an assembly robot, automatic granulation can be realized and the assembly process can be saved. (2) The impact applied when the discharge lamp 20 is attached to the lamp socket 30 is absorbed by the main body portion 2 of the power feeding member 1, thereby preventing damage to the glass bulb 11. (3) When the discharge lamp 20 is attached to the lamp socket 30, the power supply terminal 3 can be bent with respect to the glass bulb 11, so that the power supply terminal 3 and the electrical connection terminal 34 An appropriate contact pressure can be ensured and the electrical connection can be arranged in a high state. In addition, since a gap is formed between the main body portion 2 and the glass bulb 11, the gap is reduced evenly by the pressing of the pressing concave portion 32a, and the positional accuracy is high without shifting the central axis. It can be attached. (4) Since the shock and vibration applied to the discharge lamp unit 40 during transportation or use are absorbed and alleviated by the main body 2 of the power feeding member 1, the breakage of the glass bulb 11 and the lamp are turned on. It is possible to prevent defects such as badness and the like, and to reduce the influence of the shock and vibration on the power feeding member 1, thereby enabling stable power feeding. (5) Although the thermal expansion of the radial direction and the axial direction occurs in the glass bulb 11 by the lighting of the discharge lamp 20, thermal expansion is absorbed by the main-body part 2 of an elastic body, and the glass bulb 11 deform | transforms. Etc. can be reduced.

(6) Since the glass bulb 11 and the power feeding terminal 3 are spaced apart from each other by a predetermined dimension (G1), the influence of the vibration and thermal expansion of the glass bulb 11 on the power feeding terminal 3 is alleviated, so that the main body portion 2 In addition to the absorption action of), more stable power supply is possible. (7) Since the movement in the axial direction is restricted by the ribs 32c and the ribs 33c of the lamp socket 30, the power supply member 1 can arrange the discharge lamp 20 at a predetermined position. have. (8) Since the electrical connection terminal 34 is provided apart from the socket case main body 33 so as to be elastically deformable in the vertical direction, it is possible to appropriately secure the contact pressure with the power supply terminal 3. (9) Since the electrical connection terminal 34 is simply bent in an L shape from both sides of the connection recess 34c, the configuration can be simplified. (10) In the engagement of the socket cover 32, first, the pressing recessed portion 32b of the socket cover 32 contacts the feed terminal 3, and then the pressing recessed portion of the socket cover 32. Since the 32a has a dimensional relationship in contact with the main body portion 2 made of the elastic body of the power feeding member 1, the power feeding terminal 3 is reliably connected to the electrical connecting terminal 34 with an appropriate contact pressure. The discharge lamp 20 is securely held in the lamp socket 30.

(11) Since a gap is formed between the insertion hole 2c of the main body 2 and the glass bulb 11, the main body 2 of the power feeding member 1 is pressed against the socket cover 32, It is held between the socket case 31 and the socket cover 32 together with the elasticity of the main body 2 itself with slight elastic deformation, and in this respect, the discharge lamp 20 by the lamp socket 30. The maintenance of is sure. (12) By the engagement structure of the lamp socket 30, the engagement becomes strong, Furthermore, only the socket cover 32 is removed in the state which attached the socket cover 32 to the box 50. It is possible to produce, and the effect is easy to replace the discharge lamp 20 and the like. (13) Since the main body portion 2 of the power feeding member 1 is made of silicone rubber and has thermal conductivity, it is possible to effectively dissipate heat near the electrode 14. In other words, the heat in the vicinity of the electrode 14 is conducted to the lamp socket 30 having a large surface area through the glass bulb 11 and the main body 2 to radiate heat. In addition, heat near the electrode 14 is also radiated by conduction from the electrode lead wire 12 and the feed terminal 3 to the electrical connection terminal 34 and the lamp socket 30.

Next, a second embodiment of a lamp power feeding member and a discharge lamp according to the present invention will be described with reference to FIGS. 14 to 19. 14 is a perspective view showing a power supply terminal, FIG. 15 is a front view and a sectional view thereof, FIG. 16 is a front view and a sectional view of which the angle is changed from 90 degrees with the above FIG. 15, and FIG. 17 is the view in FIG. 15. 18 is a sectional view showing a power supply member, and FIG. 19 is a sectional view showing a discharge lamp. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the said 1st Embodiment, and the overlapping description is abbreviate | omitted.

In this embodiment, as shown in FIG. 19, after inserting the power supply member 1 to the edge part of the glass bulb 11 of the discharge lamp main body 10, several places of the power supply terminal 3 are cocked with a punch. Caulking parts 3d1 and 3d2 are formed, and the electric power feeding terminal 3 and the electrode lead wire 12 are electrically and mechanically connected. Of course, in the punching step of forming the caulking portions 3d1 and 3d2 with a punch, the feed member 1 is inserted into the glass bulb 11 to insert the electrode lead wire 12 into the communicating portion 3a of the feed terminal 3. ), But the electrode lead wire 12 is omitted in FIGS. 14 to 18 for convenience of explanation.

First, as shown in FIGS. 14-17, the feed terminal 3 has comprised the pin shape which has the cylindrical communication part 3a in a cylindrical shape. For example, the feed terminal 3 is caulked by pressing the two positions of the tip portion with a punch to form the caulking portions 3d1 and 3d2. Convex portions 3e1 and 3e2 which protrude inwardly of the portion 3a are formed. The inner wall facing the convex portions 3e1 and 3e2 is pressed against the electrode lead wire 12 to electrically and mechanically connect the feed terminal 3 and the electrode lead wire 12.

Here, the caulking portion 3d1 and the caulking portion 3d2 are formed at positions deviated in the axial direction and the circumferential direction of the feed terminal 3, that is, the positions deviated in the axial direction and the circumferential direction. Specifically, about one caulking part is shifted in an axial direction, and it is shifted by approximately 90 degrees in the circumferential direction. Therefore, each convex part 3e1 and 3e2 also shift | deviates and protrudes inward of the communication part 3a, and press-bonds the electrode lead wire 12. FIG.

As shown in FIG. 18, the main body part 2 made of silicone rubber is couple | bonded with this feed terminal 3 by insert molding, and the feed member 1 is comprised. And as shown in FIG. 19, this power supply member 1 is inserted in the edge part of the glass bulb 11 of the discharge lamp main body 10, and two places of the tip part of the power supply terminal 3 are caulked with a punch. The caulking portions 3d1 and 3d2 are formed. On the other hand, in this case, the caulking portion 3d2 has a length dimension L2 of 4 mm or more from the end of the glass bulb 11, that is, the sealing portion of the electrode lead wire 12.

Next, the outline | summary of the punching process which forms this caulking part 3d1, 3d2 is demonstrated. As a caulking apparatus, a facility in which two heads having punches are arranged at an angle of approximately 90 degrees on a plane is prepared. First, the glass bulb 11 into which the power feeding member 1 is inserted is vertically supported by a holder or the like, and the power feeding terminal 3 is inserted into the guide hole of the guide block. In this state, two sets are provided at the circumferential direction of the power supply terminal 3, that is, at an angle of 90 degrees on the plane, and at intervals of one caulking portion in the axial direction of the power supply terminal 3, that is, the vertical direction. Punching is performed by punching. Specifically, when two punches are advanced to the feed terminal 3 side, the front end of each punch enters the guide hole, presses and breaks down the side wall of the feed terminal 3, and protrudes into the communicating portion 3a. One convex portion 3e1, 3e2 is formed.

As mentioned above, according to this embodiment, in addition to the effect of 1st Embodiment, since the feed terminal 3 and the electrode lead wire 12 are connected by the several caulking part 3d1, 3d2, connection is ensured. As a result, the contact area can be secured, and the failure of conduction between the power supply terminal 3 and the electrode lead wire 12 can be reduced. In addition, the caulking portions 3d1 and 3d2 are formed at positions positioned in the axial direction and the circumferential direction of the feed terminal 3, and are formed at positions displaced from each other, so that the electrode lead wire 12 is disconnected due to the pressing force caused by caulking. Therefore, it becomes possible to reduce the shearing of the wall around the feed terminal 3. In the caulking portions 3d1 and 3d2, since the convex portions 3e1 and 3e2 are formed from different directions, the directions of the pressing force applied to the electrode lead wires 12 by the convex portions 3e1 and 3e2 are different. As a result, the bending direction of the electrode lead wire 12 is different, the contact between the convex parts 3e1 and 3e2 and the electrode lead wire 12 is ensured reliably, and stable electric power supply is possible. Moreover, as a facility of a caulking apparatus, the head of a punch can be arrange | positioned at the angle of about 90 degree on a plane, and space saving of arrangement is attained.

On the other hand, in the said embodiment, although caulking part 3d1, 3d2 was formed in the axial direction of the feed terminal 3, about one caulking part and about circumferential direction shift | deviated about 90 degree | times, it demonstrated, but this axial direction was described. The amount of knitting in the circumferential direction is not particularly limited and can be appropriately set according to design. In addition, arrangement | positioning of the installation of a caulking apparatus is not limited to arrange | positioning two heads at an angle of about 90 degree on a plane as mentioned above.

Next, a second embodiment of the lamp socket and the discharge lamp unit of the present invention will be described with reference to FIGS. 20 to 25. Fig. 20 is a perspective view showing a lamp socket, Fig. 21 is a perspective view and a front view showing an electrical connection terminal, Fig. 22 is a perspective view showing a connection state between a power supply member and an electric connection terminal, and Figs. 23 to 25 are discharged. It is a perspective view which shows the assembly process of a lamp unit. In addition, the same code | symbol is attached | subjected to 1st Embodiment or an equivalent part, and detailed description is abbreviate | omitted.

As shown in FIG. 20, the lamp socket 30 is comprised from the socket case 31 and the socket cover 32 which meshes with this socket case 31. As shown in FIG. The socket case 31 has the socket case main body 33 and the electrical connection terminal 34 arrange | positioned at this socket case main body 33. As shown in FIG. On the upper surface of the socket case main body 33, a semi-cylindrical bearing recess 33a on which the main body 2 of the power feeding member 1 is placed is formed, and the front end opening of the bearing recess 33a is formed. The rib 33c which faces inward is formed in the inside. Moreover, the electrical connection terminal 34 is arrange | positioned by insert molding in the both side walls of the socket case main body 33 which contact | connects the receiving recess 33a successively. Therefore, the electrical connection terminal 34 is disposed so as to cover both wall surfaces of the socket case body 33. In addition, at four corners of the case main body 33, engaging projections 33e to which the engaging jaws of the socket cover 32 described later are engaged are formed. Moreover, 33 g of slide members for attachment to a box body etc. protrude and are provided in the outer side of the both side walls of the case main body 33, and the stopper piece 33h and the vertical direction before and behind this slide member 33g, and The engagement piece 33i is formed. In addition, the arrangement | positioning of the electrical connection terminal 34 to the socket case main body 33 is not limited to insert molding, You may make it attach by a combination like 1st Embodiment.

As shown in FIG. 21, the electrical connection terminal 34 is formed substantially in a U-shape with a material having conductivity such as brass or phosphor bronze, and has a base 34a and a tip from both sides of the base 34a. The base leg 34b extends downward. The base 34a is formed with a semi-cylindrical connection recess 34c on which the power supply terminal 3 is placed. Therefore, the electrical connection terminals 34 are respectively provided from both sides of the connection recess 34c. It is curved in L shape. And the contact piece 34f is formed in the connection recessed part 34c by the slit-shaped cut | disconnected part 34e which forms the substantially U-shape. As for this contact piece 34f, one end side is the base 34a. The other end side is separated from the base 34a by the cut-out part 34e, and becomes the free end. The contact piece 34f is always elastically biased in the upward rotation direction with the junction portion with the base 34a as a point, that is, elastically deformable in a state of projecting slightly above the surface of the base 34a. See FIG. 21 (b)). On the other hand, the slit shape, the linear shape, etc. can be applied to the cutout part 34e, and it is not specifically limited.

In the connection state between the electrical connection terminal 34 and the power supply terminal 3, as shown in FIG. 22, the contact piece 34f is deformed in a rotational movement downward, so that the power supply terminal 3 has its elastic return force. By pressing. Therefore, an appropriate contact state can be maintained and defects such as a poor contact can be improved.

Subsequently, the socket cover 32 has a substantially rectangular parallelepiped shape, and the engaging jaw 32f protrudes downward from four corners.

Next, the assembling and attaching process of the discharge lamp unit 40 will be described with reference to FIGS. 23 to 25. The discharge lamp unit 40 is composed of a discharge lamp 20 and a lamp socket 30. For example, the pair of guide members 52 formed on the substrate or the box 50 of the backlight device of the liquid crystal panel. ) Is attached. As shown in FIG. 23, the guide member 52 is substantially L-shaped, and guides 54 which form a part of the through-hole 53, such as a lead wire, the board | substrate, or the box 50, between the guide members 52. As shown in FIG. It is fitted to face each other. The socket case 31 is attached to the guide member 52 by sliding so that the discharge lamp 20 and the socket cover 32 are stacked thereon.

As shown in FIG. 24, first, the lower surface of the socket case 31 is slid along the guide wall 54 in the horizontal direction (shown in the arrow direction), and the slide member 33g of the guide member 52 is removed. The slide is advanced to fit the front end of the opening. At this time, the engaging piece 33i of the slide member 33g comes into contact with the upper side of the inner wall of the guide member 52 and slides while maintaining the friction along with the elastic deformation including the guide wall 54. Then, the stopper piece 33h of the slide member 33g comes in contact with the front end of the opening of the guide member 52, and the engaging piece 33i reaches the rear end of the opening of the guide member 52 to elastically return. As a result, the engaging piece 33i is engaged with the slide member 33g, and the socket case 31 is attached to the box 50.

As shown in FIG. 25, the discharge lamp 20 is placed on the socket case 31 in a state where the socket case 31 is attached to the box 50. Specifically, the main body 2 of the power feeding member 1 is placed so as to fit with the support recess 33a of the socket case 31, and the power feeding terminal 3 is placed on the contact piece of the electrical connection terminal 34. (34f). Next, the socket cover 32 is engaged with the socket case 31. This engagement is performed by engaging the engagement tank 32f of the socket cover 32 with the engagement protrusion 33e formed in the four corners of the socket case main body 33. As shown in FIG. Therefore, after the socket case 31 is installed, the discharge lamp 20 is placed and the socket cover 32 is engaged therefrom, so that the mechanical load on the discharge lamp 20 can be reduced. Damage to the glass bulb 11 can be prevented.

As described above, according to the present embodiment, in addition to the same effects as the above-described embodiments, the contact piece 34f is formed on the electrical connection terminal 34, so that the contact pressure with the power supply terminal 3 can be sufficiently secured. In addition, even when shock or vibration is applied to the discharge lamp unit 40 during transportation or use, failures such as poor contact can be prevented and reliability can be improved. Moreover, although the thermal expansion of the radial direction and the axial direction arises in the glass bulb 11 by lighting of the discharge lamp 20, the contact piece 34f is elastically deformable and the thermal expansion through the feed terminal 3 is carried out. Can be absorbed and stress concentration on the sealing portion of the glass bulb 11 can be alleviated. In addition, since the socket case 31 of the lamp socket 30 is attached to the board | substrate or the box 50 by a slide operation, the lamp socket 30 is attached to the back surface side of the board | substrate or the box 50. It is possible not to protrude the fasteners and the like. Therefore, for example, it becomes effective when the board | substrate is laminated | stacked several sheets and is applied to the structure with narrow space | interval between board | substrates.

Subsequently, an embodiment of the light emitting device of the present invention will be described. Although not shown, the discharge lamp unit 40 of the above embodiment can be attached to the apparatus main body and configured as a light emitting device. Here, the light emitting device is a concept including a display device and a lighting device that illuminates a space. For example, it is applicable to various display apparatuses, such as a backlight apparatus of a liquid crystal panel, and also the lighting fixture used indoors or outdoors. On the other hand, the backlight device can be applied to any of a direct method, a side light method and the like. According to such a light emitting device, it is possible to provide a light emitting device that achieves the effect of the discharge lamp unit 40 of the above embodiment.

Next, another embodiment of the discharge lamp unit will be described with reference to FIGS. 26 to 28. FIG. 26 is an exploded perspective view of the discharge lamp unit, FIG. 27 is a perspective view thereof, and FIG. 28 is a plan view thereof. In addition, the same code | symbol is attached | subjected to the part same as or equivalent to 2nd Embodiment of the said lamp socket and a discharge lamp unit, and the overlapping description is abbreviate | omitted.

In FIG. 26, the lamp socket 30 is comprised from the socket case 31 and the socket cover 32 which meshes with this socket case 31. As shown in FIG. The socket case 31 is formed in a substantially rectangular parallelepiped box shape, and four guide grooves 61 bent in an L shape from the opening side are formed in four places on the inner wall thereof. In addition, the structure of an electrical connection terminal etc. is the same as that of 2nd Embodiment. On the other hand, the socket cover 32 is substantially rectangular, and the extension part of the both side walls is comprised as the elastic arm 62 which can be elastically deformed. Moreover, the engaging projection 63 which opposes the said guide groove 61 is formed in four places on the outer surface of both side walls, and the stopper projection 64 is formed in the front end side of the elastic arm 62. As shown in FIG. .

In such a configuration of the lamp socket 30, the socket case 31 is slid and attached to a substrate or a box as in the second embodiment, and then the discharge lamp 20 is placed on the socket cover 32 to hang the socket cover 32. Fit. In this engagement, first, the engagement protrusion 63 of the socket cover 32 is slid from the opening side along the guide groove 61 in the vertical direction, that is, downward. Next, the engaging projection 63 is moved along the guide groove 61 by sliding it horizontally, that is, in the figure, to the left. At this time, the stopper projection 64 collides with the front end wall 65 of the socket case 31, but if the moving further proceeds, the elastic arm 62 is elastically deformable, so that both elastic arms 62 are inward. Elastically deforms, the stopper protrusion 64 overlies the front end wall 65 of the socket case 31, and then the elastic arm 62 elastically returns, and the stopper protrusion 64 is located on the front side. Insert into the guide groove (61).

As described above, as shown in FIGS. 27 and 28, the discharge lamp unit 40 is assembled and assembled, but, for example, in the case of replacing the discharge lamp 20, the elastic arm 62 is used. Is elastically deformed inward, and the assembly of the socket cover 32 can be released by reverse operation.

Therefore, according to this embodiment, since the socket cover 32 slides in the vertical and horizontal directions, and it engages with the socket case 31, the discharging lamp 20 can be hold | maintained stably and stably. In addition, it is possible to provide the discharge lamp unit 40, which is easy to replace the discharge lamp 20.

This invention is not limited to the structure of each said embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary of invention.

1 is a front view and a side view showing a first embodiment of a power feeding member for a lamp according to the present invention.

2 is a cross-sectional view thereof.

3 is a front view showing a part of a discharge lamp main body according to the present invention.

4 is a cross-sectional view showing the discharge lamp.

5 is a cross-sectional view showing another embodiment of the discharge lamp.

6 is an exploded perspective view showing the first embodiment of the lamp socket of the present invention.

Fig. 7 is a perspective view showing the back side of the socket cover.

8 is a perspective view illustrating the lamp socket.

9 is a perspective view showing the assembling process of the discharge lamp unit of the present invention.

10 is a perspective view illustrating the assembly process.

11 is a perspective view illustrating the assembly process.

12 is a cross-sectional view showing the first embodiment of the discharge lamp unit of the present invention.

It is sectional drawing which shows the socket case which concerns on this invention.

It is a perspective view which shows 2nd Embodiment of the feed terminal which concerns on this invention.

15 is a front view and a sectional view thereof.

16 is the same front view and sectional view.

FIG. 17 is a right side view of the FIG. 15.

18 is a cross-sectional view showing the power feeding member.

19 is a cross-sectional view showing the discharge lamp.

20 is a perspective view showing a second embodiment of the lamp socket of the present invention.

Fig. 21 is a perspective view and a front view showing the electrical connection terminal.

Fig. 22 is a perspective view showing a connection state between the power supply member and the electrical connection terminal.

Fig. 23 is a perspective view showing the assembling process of the discharge lamp unit of the present invention.

24 is a perspective view illustrating the assembly process.

25 is a perspective view illustrating the assembly process.

Fig. 26 is an exploded perspective view showing another embodiment of the discharge lamp unit.

27 is a perspective view thereof.

Fig. 28 is a plan view thereof.

<Description of the symbols for the main parts of the drawings>

1: Feeding member for lamp

2: main body

2c: insertion hole

3: Feeding terminal

10: discharge lamp body

11: glass bulb,

12: electrode lead wire

14 electrode

20: discharge lamp

30: lamp socket

31: socket case

32: socket cover

32a: pressing part (pressing recessed part)

32b: Pressurized part (Pressure recessed part)

33: socket case body

33a: support recess

33c: rib

34: electrical connection terminal

34c: connection recess

34f: contact piece

40: discharge lamp unit

Claims (7)

A case body is formed with a supporting recess for placing the lamp feeding member, and a connection recess for placing a feeding terminal protruding coaxially from the lamp feeding member is formed and disposed at a predetermined position of the case body adjacent to the receiving recess. A socket case having a connected electrical connection terminal; A pressing portion formed to cover the lamp feeding member and a pressing portion for pressurizing the feed terminal are formed at a position opposite the support recess of the socket case main body, and has a socket cover that can be engaged with the socket case from the top of the socket case. Lamp socket, characterized in that. The lamp socket according to claim 1, wherein a rib for restricting movement of the lamp feeding member in the lamp axis direction is formed at an end portion on the opposite side to the direction adjacent to the connection recess of the support recess. 2. The lamp socket according to claim 1, wherein the electrical connection terminal is attached to the connection concave portion away from the case body so as to be elastically deformed in the downward direction. 4. The lamp socket according to claim 3, wherein both ends of the connection recess of the electrical connection terminal are bent in an L shape so that the tip extends downward. The lamp socket according to claim 1, wherein a contact piece elastically biased upward is formed by a cutout in the connection recess of the electrical connection terminal. A lamp socket according to any one of claims 1 to 5; A discharge lamp main body having a glass bulb with a pair of electrodes sealed therein, a main body portion formed of an elastic body inserted into an end portion of the glass bulb, and a feed terminal held on the main body so as to protrude in the axial direction of the glass bulb and connected to the electrode A discharge lamp having a power feeding member having a power supply member, the main body portion being placed on a support recess of a case of the lamp socket, and the socket cover being held by engaging the socket cover with the power supply terminal placed on a connection recess of the electrical connection terminal; Discharge lamp unit characterized in that it comprises a. A device body; A light emitting device comprising the discharge lamp unit according to claim 6 attached to the main body of the device.

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