WO2014048677A1

WO2014048677A1 - Lamp holder for light-emitting assembly and illumination device

Info

Publication number: WO2014048677A1
Application number: PCT/EP2013/067995
Authority: WO
Inventors: Yunsong ZHANG; Xuewei Dai; Daxin LIN; Yan Li
Original assignee: Osram GmbH
Current assignee: Osram GmbH
Priority date: 2012-09-25
Filing date: 2013-08-30
Publication date: 2014-04-03
Anticipated expiration: 2015-03-25
Also published as: CN103672777A; CN103672777B

Description

Lamp Holder for Light-emitting Assembly and Illumination Device

Technical Field

The present invention relates to a lamp holder for a light- emitting assembly, in particular, an LED light-emitting assembly, and an illumination device provided with the lamp holder.

Background Art

In recent years, illumination devices with automatic switch^¬ ing function are widely used in everyday life. According to application needs, it is feasible to install, for example, PIR sensors working by means of infrared rays, acoustic sen^¬ sors or optical sensors, in various illumination devices, to control the working state of the light-emitting assemblies in the illumination devices, in order to achieve the effect of automatic switching. In order to obtain such illumination devices having the function of automatic switching, for example, an additional sen^¬ sor can be installed in the existing T8 lamp tube, which is in signal connection with the light-emitting assembly in a wireless or wired manner. For the users, it is difficult to assemble the sensor and the lamp tube together and operate them. In addition, the sensor installed outside the lamp tube needs to occupy a certain space. In the case wherein the in^¬ stallation space of the lamp tube itself is limited, instal^¬ lation is more difficult. In the prior art, there are also sensor lamps, and such sensor lamp comprises, for example, a sensor directly installed at an end. However, such sensor lamp cannot directly replace the conventional T8 lamp tube to be installed in the lamp housing. Instead, the users must re^¬ place the lamp tube and the lamp holder together, and they also need to additionally connect some of the elements by welding .

Summary of the invention

The object of the present invention is to provide a lamp holder for a light-emitting assembly, in particular, an LED light-emitting assembly. Such lamp holder has strong universality, and can be assembled with an LED light-emitting assembly to form a multi-functional illumination device. Fur^¬ thermore, such lamp holder can be simply installed on the LED light-emitting assembly. A lamp holder for connecting a power supply with a light- emitting assembly is provided according to the present inven^¬ tion, the lamp holder comprising a body having two lead ports, characterized in that, the body defines a space accom^¬ modating a replaceable functional member, the space comprises at least one opening, in a first working state of the lamp holder, the space accommodates a first functional member and the opening is closed, and in a second working state of the lamp holder, the space accommodates a second functional mem^¬ ber and the opening is opened to allow the second functional member to communicate with the ambient. The lamp holder ac^¬ cording to the present invention can be used as a multi^¬ functional member and installed with the light-emitting as^¬ sembly, which not only can realize connection, particularly electrical connection, between the power supply and the light-emitting assembly, but also can provide, by means of a particularly provided opening, possibility of information communication between the second functional member accommo^¬ dated in the lamp holder and the ambient. Thus, such lamp holder has strong universality.

In an advantageous embodiment according to the present inven- tion, the first functional member is an electrical conductor through the lamp holder and connected with the power supply and the light-emitting assembly through the lead ports, re^¬ spectively. In the first working state of the lamp holder, it is possible to only implement the electrical connection be- tween the power supply and the light-emitting assembly, and thus, it is possible to close the opening by means of a seal such as a rubber plug, so as to improve the sealing performance of the lamp holder.

In an advantageous embodiment according to the present inven- tion, the second functional member comprises a sensor assem^¬ bly detecting external information, and an electrical conduc^¬ tor through the lamp holder and connected with the power supply and the light-emitting assembly through the lead ports, respectively, and the sensor assembly performs detection through the opening. In this working state, the lamp holder not only has the function of electrical connection, but also has a detection function, and the sensor assembly can acquire information from the ambient through the opening as a detection window. In an advantageous embodiment according to the present inven^¬ tion, the sensor assembly comprises a sensor and a substrate carrying the sensor. Preferably, the substrate is further provided with a cable in electrical connection with the light-emitting assembly. The substrate is not only designed for carrying the sensor, but also designed for electrical connection and/or signal connection between the sensor and the light-emitting assembly.

In an advantageous embodiment according to the present inven^¬ tion, the sensor is a distance sensor which partially goes through the opening and extends outwards. The top of the sen- sor that can be referred to such as PIR (sensor) extends out^¬ side the opening, to obtain the relevant information in the vicinity of the lamp holder, for example, the information as to whether there is a person or an object passing.

In an advantageous embodiment according to the present inven- tion, the sensor is a luminance-harvest sensor, and the sen^¬ sor assembly further comprises a reflector inserted in the opening, wherein the luminance-harvest sensor goes through an aperture opened at the bottom of the reflector, and extends into a detection region defined by the reflector. The reflec- tor not only can partially close the opening in order to improve the sealing performance of the lamp holder, but also can provide a luminance detection region having a suffi^¬ ciently large area for the luminance-harvest sensor.

In an advantageous embodiment according to the present inven- tion, the body comprises a first connector having the lead ports at the power supply side, and a second connector having an assembly port at the light-emitting assembly side. Pref^¬ erably, the opening is opened in the second connector. The first connector can be, for example, an end cap, and the sec- ond connector is located between the first connector and the light-emitting assembly, and is fixedly connected with the first connector and the light-emitting assembly.

In an advantageous embodiment according to the present inven^¬ tion, the second connector is a single-piece cylindrical mem- ber. Preferably, in the second working state of the lamp holder, the substrate is fixed on an inner wall of the cylin^¬ drical member in a radial direction, and the sensor at least partially extends towards the opening. In this case, the lamp holder has a relatively small number of members, and the sen- sor fixed in the lamp holder can only detect information in a particular direction through the opening.

In an advantageous embodiment according to the present inven^¬ tion, the second connector comprises a fixed portion and a rotational portion optionally surrounding the fixed portion in a circumferential direction, the fixed portion has one end fixedly connected with the first connector and the other end fixedly connected with the light-emitting assembly, and the opening is opened in the rotational portion. Preferably, the rotational portion is rotatablely sleeved on the first arc- shaped section. In this case, the sensor can be fixed in the second connector and aligned with the opening, and in this way, by adjusting the position of the rotational portion relative to the fixed portion, the opening can be made to face different regions in the circumferential direction, and the sensor can possibly detect information of different re^¬ gions through adjustment.

In an advantageous embodiment according to the present inven^¬ tion, a latch locking structure is provided between the rota^¬ tional portion and the fixed portion. Preferably, the latch locking structure comprises a plurality of locking

latches/locking sockets circumferentially distributed on an end surface of the rotational portion facing the annular sec^¬ tion of the fixed portion, and a plurality of locking sock^¬ ets/locking latches correspondingly arranged on the annular section. After the opening in the rotational portion is adjusted to face a desired region, it is possible to fixedly connect the rotational portion with the fixed portion by means of the latch locking structure.

In an advantageous embodiment according to the present inven^¬ tion, the fixed portion comprises an annular section, and a first arc-shaped section and a second arc-shaped section re- spectively extending from two sides of the annular section in an axial direction, wherein the first arc-shaped section is connected with the first connector and the second arc-shaped section is connected with the light-emitting assembly. The rotational portion surrounds the first arc-shaped section in the circumferential direction, and the housing of the light- emitting assembly surrounds the second arc-shaped section in the circumferential direction.

In an advantageous embodiment according to the present inven^¬ tion, a plurality of guiding portions extending in the axial direction are formed on an outer wall of the first arc-shaped section. The guiding portions, for example, which are de^¬ signed to be strip-like, are helpful to the rotational move^¬ ment of the rotational portion relative to the fixed members.

In an advantageous embodiment according to the present inven- tion, an axial stop structure is provided between the fixed portion and a housing of the light-emitting assembly. Preferably, the axial stop structure comprises a plurality of hooks extending from the annular section of the fixed portion towards the housing, and a recess provided in an inner wall of the housing. By means of the axial stop structure, the fixed portion can be fixedly connected with the housing.

In an advantageous embodiment according to the present inven^¬ tion, at least one pair of accommodation grooves accommodat^¬ ing the substrate of the second functional member in the ax- ial direction are provided on an inner wall of the rotational portion. The accommodation grooves preferably extend perpendicularly to the opening, which thereby can ensure that the sensor carried by the substrate can perform detection perpendicularly to the opening. In addition, multiple pairs of ac- commodation grooves can be provided depending on the size of the sensor, in particular, the length, in order to adjust the distance between the substrate and the opening.

In an advantageous embodiment according to the present inven^¬ tion, the accommodation grooves are arranged to face each other, and a locking structure is provided between the accom^¬ modation grooves and the substrate. Preferably, the locking structure comprises a hook protruding in the accommodation groove and a notch correspondingly formed in an edge region of the substrate, which thereby can ensure that the edge re- gions on the two sides of the substrate are firmly locked in the accommodation grooves

In an advantageous embodiment according to the present inven^¬ tion, the body further comprises two electrical pins extend^¬ ing outwards from the lead ports, respectively. In addition, the present invention further relates to an illumination device comprising a light-emitting assembly and a lamp holder as described above. Such illumination device can be adjusted by the user according to application conditions, which not only can have normal illumination function, but also can have special functions, for example, automatic turn^¬ ing on and/or off.

In an advantageous embodiment according to the present inven^¬ tion, the lamp holder is connected linearly to the end of the light-emitting assembly. Preferably, the light-emitting assembly and the lamp holder jointly form a cylindrical structure or an elongated struc^¬ ture. When the light source of the light-emitting assembly is an LED light source, such retrofit lamp can replace a conven- tional fluorescent tube.

It shall be understood that both the above general descrip^¬ tion and the following detailed description are for illustrative and explanative purposes in order to provide further de^¬ scription on the claimed present invention. Brief Description of the Drawings

The preferred embodiments according to the present invention are exemplarily described with reference to the drawings. In the drawings,

Fig. 1 is a 3D exploded view of the lamp holder according to the present invention;

Fig. 2 is a 3D view of the rotational portion in Fig. 1 ;

Fig. 3 is a local sectional view of the first embodiment of the illumination device according to the present invention;

Fig. 4 is a local sectional view of the second embodiment of the illumination device according to the present invention; and

Fig. 5 is a local sectional view of the third embodiment of the illumination device according to the present invention.

Detailed Description of the Embodiments In the following detailed Description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, direc^¬ tional terminology, such as "top", "bottom", "inner", "outer" etc., is used with reference to the orientation of the Fig^¬ ure (s) being described. Because components of embodiments can be positioned in a number of different orientations, the di^¬ rectional terminology is used for purposes of illustration and is in no way limiting. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims. In addition, while a particular feature or aspect of an embodiment of the present invention may have been disclosed with respect to only one of several implementations, such feature or aspect may be combined with one or more other fea^¬ tures or aspects of the other implementations as may be de- sired and advantageous for any given or particular applica^¬ tion.

Fig. 1 is a 3D exploded view of the lamp holder 100 according to the present invention. The lamp holder 100 which, for example, can be installed at the end of the lamp tube comprises a body 1 consisting of a plurality of members, wherein the body 1 defines a space R. In the space R, an electrical con^¬ ductor 4 (see Fig. 3) serving as a first functional member is placed, in addition, various replaceable second functional members can also be placed in the space R, these second func- tional members being, for example, various kinds of sensor assemblies 5 (see Fig. 4 and Fig. 5) . The sensor assembly 5 comprises a substrate 53 shown in Fig. 1 and a sensor (51 or 52) not shown in Fig. 1. In order that the sensor can communicate with the ambient, for example, can detect the external information of the lamp holder 100, an opening 3 is particularly opened in the body 1 as a detection window for the sen- sor assembly 5. The sensor assembly 5 can transmit the infor^¬ mation obtained to the light-emitting module 201 (see Figs. 3-5) in electrical connection or signal connection with the sensor assembly 5, and in this way, the light-emitting module 201 can be automatically turned on or off. The body 1 comprises a first connector 6 and a second connec^¬ tor 7, wherein the first connector 6, as an end cap, comprises one pair of lead ports 2 and electrical pins 20 ex^¬ tending from the lead ports 2 towards the power supply. The second connector 7 is connected between the first connector 6 and the light-emitting assembly 201, and the second connector 7 comprises an assembly port 8 in connection with the light- emitting assembly 201. In order that the sensor can detect the ambient as broadly as possible, the second connector 7 is specifically designed as a two-piece member rotatablely with respect to each other, including a fixed portion 9 and a rotational portion 10 optionally surrounding the fixed portion 9 in the circumferential direction. The opening 3 is provided in the rotational portion 10, and the sensor assembly 5 for detecting information through the opening 3 is correspond- ingly fixed in the rotational portion 10. Thus, by adjusting the position of the rotational portion 10 relative to the fixed portion 9, the opening 3 can be made to face different regions in the circumferential direction, and the sensor can detect information of different regions through adjustment. The fixed portion 9 having two sides connected with the first connector 6 and the light-emitting assembly 201, respectively is an integral composed of an annular section 11, a first arc-shaped section 12 and a second arc-shaped section 13. The first and second arc-shaped sections 12, 13 extend from the two sides of the annular section 11 in the axial direction, respectively, wherein the first arc-shaped section 12 is fix- edly connected with the first connector 6 using its end sur^¬ face, and the second arc-shaped section 13 partially defines the assembly port 8 and is connected to the light-emitting assembly 201.

After the rotational portion 10 is rotated to make the open- ing 3 face a desired region, it is necessary to lock the ro^¬ tational portion 10 and the fixed portion 9 to each other in the circumferential direction. Thus, a latch locking struc^¬ ture is particularly provided between the rotational portion 10 and the fixed portion 9. The latch locking structure com- prises two locking latches 14' circumferentially distributed on an end surface of the rotational portion 10 facing the an^¬ nular section 11, and a plurality of locking sockets 14 correspondingly arranged on the annular section 11, the locking sockets 14 are uniformly arranged into a ring. In an embodiment not shown, it is also feasible to provide a plurality of uniformly distributed locking sockets on the end surface of the rotational portion facing the annular section, for accommodating at least one locking latch correspondingly protruding from an end surface of the annular section. The rotational portion 10 can be rotatablely sleeved on the first arc-shaped section 12 by means of the latch locking structure. A plurality of rib-like guiding portions 19 ex^¬ tending in the axial direction are formed on the outer wall of the first arc-shaped section 12. When it is necessary to replace the sensor assembly 5 installed in the rotational portion 10, it is feasible to simply separate the rotational portion 10 from the fixed portion 9 in the axial direction by means of the guiding portions 19. Furthermore, by means of the guiding portions 19, it is also possible to reduce the friction area between the rotational portion 10 and the first arc-shaped section 12.

In order to ensure that the lamp holder 100 can be firmly integrated with the light-emitting assembly 201, an axial stop structure is particularly provided between the fixed portion 9 and a housing 202 of the light-emitting assembly 201. The axial stop structure comprises a plurality of hooks 15 ex^¬ tending from the annular section 11 towards the housing 202, and a recess 16 provided in an inner wall of the housing 202.

In an embodiment not shown, the second connector is a single- piece cylindrical member. The substrate is fixed on an inner wall of the cylindrical member in a radial direction, and the sensor at least partially extends towards the opening. In this case, the lamp holder has a relatively small number of members, the position of the sensor relative to the light- emitting assembly is fixed, and the sensor cannot be rotated in the circumferential direction, thus, the sensor can just detect information in a particular direction through the opening .

Fig. 2 is a 3D view of the rotational portion in Fig. 1. Two pairs of accommodation grooves 17 accommodating the substrate 53 in the axial direction are provided on the inner wall of the rotational portion 10. By means of the accommodation grooves 17, it is possible to fix the substrate 53 (see Fig. 1 and Figs. 4-5) of the sensor assembly 5 in the rotational portion 10, and to make, in the optimum case, the opening 3 vertically face the sensor (51 or 52) carried on the sub^¬ strate 53. Each pair of accommodation grooves 17 are respectively de^¬ fined by two parallel partition boards oppositely extending from the left inner wall and the right inner wall of the ro^¬ tational portion 10. Two pairs of accommodation grooves 17 that are stacked in the radial direction, i.e. in the axial direction parallel to the opening 3, can respectively accom^¬ modate sensor assemblies 5 having different structural dimen^¬ sions, especially having different lengths in the radial di^¬ rection. In addition, a locking structure is provided between in the accommodation grooves 17 and the substrate 53, the locking structure comprises a hook 18 protruding in the ac^¬ commodation groove 17 and a notch correspondingly formed in an edge region of the substrate 53, which thereby can ensure that the edge regions on the two sides of the substrate 53 are firmly locked in the accommodation grooves 17.

Figs. 3-5 are respectively local sectional views of three different embodiments of the illumination device according to the present invention. The lamp holders 100 shown in the fig^¬ ures are in the first working state. The lamp holder 100 is linearly connected to an end of the light-emitting assembly 201. The light-emitting assembly 201 and the lamp holder 100 jointly form a cylindrical structure. When the light source of the light-emitting assembly is an LED light source, the illumination device 200 according to the present invention can be used as a retrofit lamp to replace a conventional fluorescent tube.

In the local sectional view of the first embodiment shown in Fig. 3, the lamp holder 100 is in the first working state. The space R defined by the first connector 6 and the second connector 7 only accommodates one pair of electrical conduc^¬ tors 4, and the opening 3 is closed by a rubber cover 30. This pair of electrical conductors 4 each have one end con- nected with one end of the electrical pin 20 within the lamp holder 100, and the other end extending to the circuit board 203 of the light-emitting module 201. In this way, the cur^¬ rent from the power supply can be guided to the circuit board 203 through the electrical conductors 4, so as to drive the light-emitting assembly 201 to work.

In the local sectional view of the second embodiment shown in Fig. 4, the lamp holder 100 is in the second working state. In this embodiment, the sensor assembly 5 for detecting ex- ternal information includes a distance sensor 51 and a sub^¬ strate 53 carrying the distance sensor 51, and in the radial direction, the substrate 53 is located in the accommodation groove 17 at an upper position. The top portion of the distance sensor 51 having a greater length in the radial direc- tion fully extends outside the opening 3, for detecting the external information in a range as large as possible. The substrate 53 can also be inserted into the accommodation groove 17 at a lower position, which thereby can shorten the length of the distance sensor 51 extending outside the body 1, so as to reduce the structural dimension of the lamp holder 100.

In addition, the space R defined in the body 1 further accommodates electrical conductors which are not shown. Just as shown in Fig. 3, these electrical conductors go through the lamp holder 100 and are connected with the power supply and the light-emitting assembly 201 through the lead ports 2, re^¬ spectively.

Fig. 5 is a local sectional view of the third embodiment of the illumination device according to the present invention. The difference between the third embodiment shown in Fig. 5 and the second embodiment shown in Fig. 4 lies in that the distance sensor is replaced by a luminance-harvest sensor 52. As such sensor works dependently on luminance, a reflector 54 is particularly provided for the luminance-harvest sensor 52. The reflector 54, for example, having a truncated conical profile, is inserted in the opening 3 to form a basin-shaped light condensing region. The luminance-harvest sensor 52 goes through an aperture 55 opened at the bottom of the reflector 54, and extends into the light condensing region, for detect^¬ ing corresponding information in this region. The reflector 54 not only provides a luminance detection region having a sufficiently large area for the luminance-harvest sensor, but also can partially close the opening 3 in order to improve the sealing performance of the lamp holder 100.

In the second and third embodiments, the substrate 53 carry- ing the sensor 51 or 52, or PCBA is in connection with the circuit board 203 of the light-emitting assembly 201, or PCBA by a cable, which thereby can realize electrical connection and/or signal connection between the sensor 51 or 52 and the light-emitting assembly 201. The above is merely preferred embodiments of the present in^¬ vention but not to limit the present invention. For the per^¬ son skilled in the art, the present invention may have vari^¬ ous alterations and changes. Any alterations, equivalent sub^¬ stitutions, improvements, within the spirit and principle of the present invention, should be covered in the protection scope of the present invention. , ,

1 b

List of reference signs

1 body

2 lead port

20 electrical pin

3 opening

30 rubber cover

4 electrical conductor

5 sensor assembly

51 (distance) sensor

52 (luminance-harvest) sensor

53 substrate

54 reflector

55 aperture

6 first connector

7 second connector

8 assembly port

9 fixed portion

10 rotational portion , ^

11 annular section

12 first arc-shaped section

13 second arc-shaped section

14 locking socket

14' locking latch

15 hook

16 recess

17 accommodation groove

18 hook

19 guiding portion

100 lamp holder

200 illumination device

201 light-emitting module

202 housing

203 circuit board

R space

Claims

1. A lamp holder (100) for connecting a power supply with a light-emitting assembly (201), comprising a body (1) hav- ing two lead ports (2), characterized in that, the body

(1) defines a space (R) accommodating a replaceable func^¬ tional member, the space (R) comprises at least one open^¬ ing (3) , in a first working state of the lamp holder

(100), the space (R) accommodates a first functional mem- ber and the opening (3) is closed, and in a second working state of the lamp holder (100), the space (R) accommodates a second functional member and the opening (3) is opened to allow the second functional member to communicate with the ambient.

The lamp holder (100) according to Claim 1, characterized in that, the first functional member is an electrical con ductor (4) through the lamp holder (100) and connected with the power supply and the light-emitting assembly (201) through the lead ports (2), respectively. 3. The lamp holder (100) according to Claim 1, characterized in that, the second functional member comprises a sensor assembly (5) detecting external information, and an elec^¬ trical conductor (4) through the lamp holder (100) and connected with the power supply and the light-emitting as- sembly (201) through the lead ports (2), respectively, and the sensor assembly (5) performs detection through the opening (3) .

4. The lamp holder (100) according to Claim 3, characterized in that, the sensor assembly (5) comprises a sensor (51, 52) and a substrate (53) carrying the sensor (51, 52) .

5. The lamp holder (100) according to Claim 4, characterized in that, the sensor is a distance sensor (51) which par^¬ tially goes through the opening (3) and extends outwards.

6. The lamp holder (100) according to Claim 4, characterized in that, the sensor is a luminance-harvest sensor (52), and the sensor assembly (5) further comprises a reflector (54) inserted in the opening (3), wherein the luminance- harvest sensor (52) goes through an aperture (55) opened at the bottom of the reflector (54), and extends into a detection region defined by the reflector (54) .

7. The lamp holder (100) according to any of Claims 1-6,

characterized in that, the body (1) comprises a first con^¬ nector (6) having the lead ports (2) at the power supply side, and a second connector (7) having an assembly port (8) at the light-emitting assembly side.

8. The lamp holder (100) according to Claim 7, characterized in that, the opening (3) is opened in the second connector (7) .

9. The lamp holder (100) according to Claim 8, characterized in that, the second connector (7) is a single-piece cylin^¬ drical member.

10. The lamp holder (100) according to Claim 9, characterized in that, in the second working state of the lamp holder (100), the substrate (53) is fixed on an inner wall of the cylindrical member in a radial direction, and the sensor (51, 52) at least partially extends towards the opening (3) .

11. The lamp holder (100) according to Claim 8, character- ized in that, the second connector (7) comprises a fixed portion (9) and a rotational portion (10) optionally sur^¬ rounding the fixed portion (9) in a circumferential direc^¬ tion, the fixed portion (9) has one end fixedly connected with the first connector (6) and the other end fixedly connected with the light-emitting assembly (201), and the opening (3) is opened in the rotational portion (10) .

12. The lamp holder (100) according to Claim 11, characterized in that, a latch locking structure is provided be- tween the rotational portion (10) and the fixed portion

(9) .

13. The lamp holder (100) according to Claim 11, characterized in that, the fixed portion (9) comprises an annular section (11), and a first arc-shaped section (12) and a second arc-shaped section (13) respectively extending from two sides of the annular section (11) in an axial direc^¬ tion, wherein the first arc-shaped section (12) is connected with the first connector (6) and the second arc- shaped section (13) is connected with the light-emitting assembly (201) .

14. The lamp holder (100) according to Claim 12, characterized in that, the rotational portion (10) is rotatablely sleeved on the first arc-shaped section (12) .

15. The lamp holder (100) according to Claim 14, character- ized in that, a plurality of guiding portions (19) extend^¬ ing in the axial direction are formed on an outer wall of the first arc-shaped section (12) .

16. The lamp holder (100) according to Claim 12, characterized in that, the latch locking structure comprises a plu- rality of locking latches ( 14 ') /locking sockets (14) circumferentially distributed on an end surface of the ro^¬ tational portion (10) facing the annular section (11) of the fixed portion (9), and a plurality of locking sockets (14) /locking latches (14') correspondingly arranged on the annular section (11) .

17. The lamp holder (100) according to Claim 11, characterized in that, an axial stop structure is provided between the fixed portion (9) and a housing (202) of the light- emitting assembly (201).

18. The lamp holder (100) according to Claim 17, characterized in that, the axial stop structure comprises a plural^¬ ity of hooks (15) extending from the annular section (11) of the fixed portion (9) towards the housing (202), and a recess (16) provided in an inner wall of the housing

(202) .

19. The lamp holder (100) according to Claim 11, characterized in that, at least one pair of accommodation grooves (17) accommodating the substrate (53) of the second func^¬ tional member in the axial direction are provided on an inner wall of the rotational portion (10) .

20. The lamp holder (100) according to Claim 19, characterized in that, the accommodation grooves (17) are arranged to face each other, and a locking structure is provided between the accommodation grooves (17) and the substrate (53) .

21. The lamp holder (100) according to Claim 20, characterized in that, the locking structure comprises a hook (18) protruding in the accommodation groove (17) and a notch correspondingly formed in an edge region of the substrate (53) .

22. The lamp holder (100) according to any of Claims 1-6, characterized in that, the body (1) further comprises two electrical pins (20) extending outwards from the lead ports (2), respectively.

23. The lamp holder (100) according to Claim 4, characterized in that, the substrate (53) is further provided with a cable in electrical connection with the light-emitting assembly (201) .

24. An illumination device (200) comprising a light-emitting assembly (201), characterized by further comprising a lamp holder (100) according to any of Claims 1-23.

25. The illumination device (200) according to Claim 24, characterized in that, the lamp holder (100) is connected linearly to the end of the light-emitting assembly (201) .

26. The illumination device (200) according to Claim 25, characterized in that, the light-emitting assembly (201) and the lamp holder (100) jointly form a cylindrical structure or an elongated structure.